From 8099510e72e99be83adf43e9f067e280ed8fea03 Mon Sep 17 00:00:00 2001 From: checkraisefold Date: Tue, 24 Sep 2024 17:05:44 -0700 Subject: [PATCH 01/90] Fix linking for symbols starting with ? --- compiler/rustc_codegen_ssa/src/back/symbol_export.rs | 1 + 1 file changed, 1 insertion(+) diff --git a/compiler/rustc_codegen_ssa/src/back/symbol_export.rs b/compiler/rustc_codegen_ssa/src/back/symbol_export.rs index 60ab291935256..25723dd1a5824 100644 --- a/compiler/rustc_codegen_ssa/src/back/symbol_export.rs +++ b/compiler/rustc_codegen_ssa/src/back/symbol_export.rs @@ -577,6 +577,7 @@ pub(crate) fn linking_symbol_name_for_instance_in_crate<'tcx>( } let prefix = match &target.arch[..] { + "x86" if target.is_like_windows && undecorated.starts_with("?") => return undecorated, "x86" => Some('_'), "x86_64" => None, "arm64ec" => Some('#'), From 784d47b7d188058e82f465fe4018fcba55041e21 Mon Sep 17 00:00:00 2001 From: checkraisefold Date: Mon, 30 Dec 2024 21:30:29 -0800 Subject: [PATCH 02/90] Add a test --- .../run-make/issue-44282-questionmark-mangle/main.rs | 11 +++++++++++ .../run-make/issue-44282-questionmark-mangle/rmake.rs | 9 +++++++++ 2 files changed, 20 insertions(+) create mode 100644 tests/run-make/issue-44282-questionmark-mangle/main.rs create mode 100644 tests/run-make/issue-44282-questionmark-mangle/rmake.rs diff --git a/tests/run-make/issue-44282-questionmark-mangle/main.rs b/tests/run-make/issue-44282-questionmark-mangle/main.rs new file mode 100644 index 0000000000000..d6df6b6133e17 --- /dev/null +++ b/tests/run-make/issue-44282-questionmark-mangle/main.rs @@ -0,0 +1,11 @@ +#![crate_type = "cdylib"] + +#[no_mangle] +pub extern "C" fn foo(a: i32, b: i32) -> i32 { + 1 +} + +#[export_name = "?bar@@YAXXZ"] +pub extern "C" fn bar(a: i32, b: i32) -> i32 { + 2 +} diff --git a/tests/run-make/issue-44282-questionmark-mangle/rmake.rs b/tests/run-make/issue-44282-questionmark-mangle/rmake.rs new file mode 100644 index 0000000000000..2fb91ef736f63 --- /dev/null +++ b/tests/run-make/issue-44282-questionmark-mangle/rmake.rs @@ -0,0 +1,9 @@ +// This test verifies that functions including a leading question mark +// in their export_name attribute successfully compile. +// This is only an issue on Windows 32-bit. + +use run_make_support::{run, run_fail, rustc}; + +fn main() { + rustc().input("main.rs").target("i686-pc-windows-msvc").run(); +} From a4c628c753e9ac5310f045cc6893baf353859158 Mon Sep 17 00:00:00 2001 From: checkraisefold Date: Tue, 31 Dec 2024 00:29:52 -0800 Subject: [PATCH 03/90] Significant test improvements --- .../issue-44282-questionmark-mangle/main.rs | 11 -------- .../issue-44282-questionmark-mangle/rmake.rs | 9 ------- .../symbol-with-question-mark-links.rs | 25 +++++++++++++++++++ 3 files changed, 25 insertions(+), 20 deletions(-) delete mode 100644 tests/run-make/issue-44282-questionmark-mangle/main.rs delete mode 100644 tests/run-make/issue-44282-questionmark-mangle/rmake.rs create mode 100644 tests/ui/symbol-names/symbol-with-question-mark-links.rs diff --git a/tests/run-make/issue-44282-questionmark-mangle/main.rs b/tests/run-make/issue-44282-questionmark-mangle/main.rs deleted file mode 100644 index d6df6b6133e17..0000000000000 --- a/tests/run-make/issue-44282-questionmark-mangle/main.rs +++ /dev/null @@ -1,11 +0,0 @@ -#![crate_type = "cdylib"] - -#[no_mangle] -pub extern "C" fn foo(a: i32, b: i32) -> i32 { - 1 -} - -#[export_name = "?bar@@YAXXZ"] -pub extern "C" fn bar(a: i32, b: i32) -> i32 { - 2 -} diff --git a/tests/run-make/issue-44282-questionmark-mangle/rmake.rs b/tests/run-make/issue-44282-questionmark-mangle/rmake.rs deleted file mode 100644 index 2fb91ef736f63..0000000000000 --- a/tests/run-make/issue-44282-questionmark-mangle/rmake.rs +++ /dev/null @@ -1,9 +0,0 @@ -// This test verifies that functions including a leading question mark -// in their export_name attribute successfully compile. -// This is only an issue on Windows 32-bit. - -use run_make_support::{run, run_fail, rustc}; - -fn main() { - rustc().input("main.rs").target("i686-pc-windows-msvc").run(); -} diff --git a/tests/ui/symbol-names/symbol-with-question-mark-links.rs b/tests/ui/symbol-names/symbol-with-question-mark-links.rs new file mode 100644 index 0000000000000..5d46f0556555c --- /dev/null +++ b/tests/ui/symbol-names/symbol-with-question-mark-links.rs @@ -0,0 +1,25 @@ +// This test ensures functions with an exported name beginning with a question mark +// successfully compile and link. +// +// Regression test for + +//@ build-pass +//@ only-windows +//@ only-x86 +// Reason: This test regards a linker issue which only applies to Windows. +// Specifically, it only occurs due to Windows x86 name decoration, combined with +// a mismatch between LLVM's decoration logic and Rust's (for `lib.def` generation) + +#![crate_type = "cdylib"] + +#[no_mangle] +pub extern "C" fn decorated(a: i32, b: i32) -> i32 { + 1 +} + +// This isn't just `?undecorated` because MSVC's linker fails if the decorated +// symbol is not valid. +#[export_name = "?undecorated@@YAXXZ"] +pub extern "C" fn undecorated(a: i32, b: i32) -> i32 { + 2 +} From d45fd5e1be4255a6b2821f7007ae95f7fdf89578 Mon Sep 17 00:00:00 2001 From: Ben Kimock Date: Sun, 12 Jan 2025 15:06:56 -0500 Subject: [PATCH 04/90] Refactor CGU partitioning a little --- .../rustc_monomorphize/src/partitioning.rs | 44 ++++++++++--------- 1 file changed, 23 insertions(+), 21 deletions(-) diff --git a/compiler/rustc_monomorphize/src/partitioning.rs b/compiler/rustc_monomorphize/src/partitioning.rs index 7b17966343084..614a1f57d64a2 100644 --- a/compiler/rustc_monomorphize/src/partitioning.rs +++ b/compiler/rustc_monomorphize/src/partitioning.rs @@ -165,7 +165,8 @@ where // estimates. { let _prof_timer = tcx.prof.generic_activity("cgu_partitioning_merge_cgus"); - merge_codegen_units(cx, &mut codegen_units); + let cgu_contents = merge_codegen_units(cx, &mut codegen_units); + rename_codegen_units(cx, &mut codegen_units, cgu_contents); debug_dump(tcx, "MERGE", &codegen_units); } @@ -200,7 +201,6 @@ where I: Iterator>, { let mut codegen_units = UnordMap::default(); - let is_incremental_build = cx.tcx.sess.opts.incremental.is_some(); let mut internalization_candidates = UnordSet::default(); // Determine if monomorphizations instantiated in this crate will be made @@ -227,20 +227,8 @@ where } } - let characteristic_def_id = characteristic_def_id_of_mono_item(cx.tcx, mono_item); - let is_volatile = is_incremental_build && mono_item.is_generic_fn(); - - let cgu_name = match characteristic_def_id { - Some(def_id) => compute_codegen_unit_name( - cx.tcx, - cgu_name_builder, - def_id, - is_volatile, - cgu_name_cache, - ), - None => fallback_cgu_name(cgu_name_builder), - }; - + let cgu_name = + compute_codegen_unit_name(cx.tcx, cgu_name_builder, mono_item, cgu_name_cache); let cgu = codegen_units.entry(cgu_name).or_insert_with(|| CodegenUnit::new(cgu_name)); let mut can_be_internalized = true; @@ -321,7 +309,7 @@ where fn merge_codegen_units<'tcx>( cx: &PartitioningCx<'_, 'tcx>, codegen_units: &mut Vec>, -) { +) -> UnordMap> { assert!(cx.tcx.sess.codegen_units().as_usize() >= 1); // A sorted order here ensures merging is deterministic. @@ -421,6 +409,14 @@ fn merge_codegen_units<'tcx>( // Don't update `cgu_contents`, that's only for incremental builds. } + cgu_contents +} + +fn rename_codegen_units<'tcx>( + cx: &PartitioningCx<'_, 'tcx>, + codegen_units: &mut Vec>, + cgu_contents: UnordMap>, +) { let cgu_name_builder = &mut CodegenUnitNameBuilder::new(cx.tcx); // Rename the newly merged CGUs. @@ -678,13 +674,16 @@ fn characteristic_def_id_of_mono_item<'tcx>( } } -fn compute_codegen_unit_name( - tcx: TyCtxt<'_>, +fn compute_codegen_unit_name<'tcx>( + tcx: TyCtxt<'tcx>, name_builder: &mut CodegenUnitNameBuilder<'_>, - def_id: DefId, - volatile: bool, + mono_item: MonoItem<'tcx>, cache: &mut CguNameCache, ) -> Symbol { + let Some(def_id) = characteristic_def_id_of_mono_item(tcx, mono_item) else { + return fallback_cgu_name(name_builder); + }; + // Find the innermost module that is not nested within a function. let mut current_def_id = def_id; let mut cgu_def_id = None; @@ -712,6 +711,9 @@ fn compute_codegen_unit_name( let cgu_def_id = cgu_def_id.unwrap(); + let is_incremental_build = tcx.sess.opts.incremental.is_some(); + let volatile = is_incremental_build && mono_item.is_generic_fn(); + *cache.entry((cgu_def_id, volatile)).or_insert_with(|| { let def_path = tcx.def_path(cgu_def_id); From 27cf264f675e0ba01939c5a4505aa823a427ff90 Mon Sep 17 00:00:00 2001 From: Ben Kimock Date: Sun, 12 Jan 2025 15:54:38 -0500 Subject: [PATCH 05/90] Enforce compiler-builtins CGU partitioning in the compiler --- .../src/cross_crate_inline.rs | 9 +++++++++ compiler/rustc_monomorphize/src/partitioning.rs | 17 +++++++++++++++++ library/Cargo.toml | 13 ------------- 3 files changed, 26 insertions(+), 13 deletions(-) diff --git a/compiler/rustc_mir_transform/src/cross_crate_inline.rs b/compiler/rustc_mir_transform/src/cross_crate_inline.rs index 8fce856687cb8..9e5d4a436584d 100644 --- a/compiler/rustc_mir_transform/src/cross_crate_inline.rs +++ b/compiler/rustc_mir_transform/src/cross_crate_inline.rs @@ -34,6 +34,15 @@ fn cross_crate_inlinable(tcx: TyCtxt<'_>, def_id: LocalDefId) -> bool { return true; } + // compiler-builtins only defines intrinsics (which are handled above by checking + // contains_extern_indicator) and helper functions used by those intrinsics. The helper + // functions should always be inlined into intrinsics that use them. This check does not + // guarantee that we get the optimizations we want, but it makes them *much* easier. + // See https://github.com/rust-lang/rust/issues/73135 + if tcx.is_compiler_builtins(rustc_span::def_id::LOCAL_CRATE) { + return true; + } + if tcx.has_attr(def_id, sym::rustc_intrinsic) { // Intrinsic fallback bodies are always cross-crate inlineable. // To ensure that the MIR inliner doesn't cluelessly try to inline fallback diff --git a/compiler/rustc_monomorphize/src/partitioning.rs b/compiler/rustc_monomorphize/src/partitioning.rs index 614a1f57d64a2..6facb0dd6ecee 100644 --- a/compiler/rustc_monomorphize/src/partitioning.rs +++ b/compiler/rustc_monomorphize/src/partitioning.rs @@ -319,6 +319,13 @@ fn merge_codegen_units<'tcx>( let mut cgu_contents: UnordMap> = codegen_units.iter().map(|cgu| (cgu.name(), vec![cgu.name()])).collect(); + // When compiling compiler_builtins, we do not want to put multiple intrinsics in a CGU. + // There may be mergeable CGUs under this constraint, but just skipping over merging is much + // simpler. + if cx.tcx.is_compiler_builtins(LOCAL_CRATE) { + return cgu_contents; + } + // If N is the maximum number of CGUs, and the CGUs are sorted from largest // to smallest, we repeatedly find which CGU in codegen_units[N..] has the // greatest overlap of inlined items with codegen_units[N-1], merge that @@ -680,6 +687,16 @@ fn compute_codegen_unit_name<'tcx>( mono_item: MonoItem<'tcx>, cache: &mut CguNameCache, ) -> Symbol { + // When compiling compiler_builtins, we do not want to put multiple intrinsics in a CGU. + // Using the symbol name as the CGU name puts every GloballyShared item in its own CGU, but in + // an optimized build we actually want every item in the crate that isn't an intrinsic to get + // LocalCopy so that it is easy to inline away. In an unoptimized build, this CGU naming + // strategy probably generates more CGUs than we strictly need. But it is simple. + if tcx.is_compiler_builtins(LOCAL_CRATE) { + let name = mono_item.symbol_name(tcx); + return Symbol::intern(name.name); + } + let Some(def_id) = characteristic_def_id_of_mono_item(tcx, mono_item) else { return fallback_cgu_name(name_builder); }; diff --git a/library/Cargo.toml b/library/Cargo.toml index e59aa518804f3..9fcddfc019bb2 100644 --- a/library/Cargo.toml +++ b/library/Cargo.toml @@ -11,19 +11,6 @@ exclude = [ "windows_targets" ] -[profile.release.package.compiler_builtins] -# For compiler-builtins we always use a high number of codegen units. -# The goal here is to place every single intrinsic into its own object -# file to avoid symbol clashes with the system libgcc if possible. Note -# that this number doesn't actually produce this many object files, we -# just don't create more than this number of object files. -# -# It's a bit of a bummer that we have to pass this here, unfortunately. -# Ideally this would be specified through an env var to Cargo so Cargo -# knows how many CGUs are for this specific crate, but for now -# per-crate configuration isn't specifiable in the environment. -codegen-units = 10000 - # These dependencies of the standard library implement symbolication for # backtraces on most platforms. Their debuginfo causes both linking to be slower # (more data to chew through) and binaries to be larger without really all that From f81ebfb485c143594ef69b2496917f6da4eb629e Mon Sep 17 00:00:00 2001 From: checkraisefold Date: Mon, 13 Jan 2025 18:07:19 -0800 Subject: [PATCH 06/90] Match LLVM behavior more closely Co-authored-by: David Wood --- compiler/rustc_codegen_ssa/src/back/symbol_export.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/compiler/rustc_codegen_ssa/src/back/symbol_export.rs b/compiler/rustc_codegen_ssa/src/back/symbol_export.rs index 25723dd1a5824..6dd4617e283e1 100644 --- a/compiler/rustc_codegen_ssa/src/back/symbol_export.rs +++ b/compiler/rustc_codegen_ssa/src/back/symbol_export.rs @@ -577,7 +577,7 @@ pub(crate) fn linking_symbol_name_for_instance_in_crate<'tcx>( } let prefix = match &target.arch[..] { - "x86" if target.is_like_windows && undecorated.starts_with("?") => return undecorated, + "x86" | "x86_64" if target.is_like_msvc && undecorated.starts_with("?") => return undecorated, "x86" => Some('_'), "x86_64" => None, "arm64ec" => Some('#'), From bf3633870d4026ea9a39695a0d28b9cd6f20dea5 Mon Sep 17 00:00:00 2001 From: checkraisefold Date: Tue, 14 Jan 2025 01:49:17 -0800 Subject: [PATCH 07/90] Accept tidy changes --- compiler/rustc_codegen_ssa/src/back/symbol_export.rs | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/compiler/rustc_codegen_ssa/src/back/symbol_export.rs b/compiler/rustc_codegen_ssa/src/back/symbol_export.rs index 6dd4617e283e1..043ba97eca907 100644 --- a/compiler/rustc_codegen_ssa/src/back/symbol_export.rs +++ b/compiler/rustc_codegen_ssa/src/back/symbol_export.rs @@ -577,7 +577,9 @@ pub(crate) fn linking_symbol_name_for_instance_in_crate<'tcx>( } let prefix = match &target.arch[..] { - "x86" | "x86_64" if target.is_like_msvc && undecorated.starts_with("?") => return undecorated, + "x86" | "x86_64" if target.is_like_msvc && undecorated.starts_with("?") => { + return undecorated + } "x86" => Some('_'), "x86_64" => None, "arm64ec" => Some('#'), From 9c3b53daf581aa0088a39572db4e6e1508f29eb3 Mon Sep 17 00:00:00 2001 From: checkraisefold Date: Tue, 14 Jan 2025 02:19:14 -0800 Subject: [PATCH 08/90] Apply tidy suggestion (2) --- compiler/rustc_codegen_ssa/src/back/symbol_export.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/compiler/rustc_codegen_ssa/src/back/symbol_export.rs b/compiler/rustc_codegen_ssa/src/back/symbol_export.rs index 043ba97eca907..20881093f97b5 100644 --- a/compiler/rustc_codegen_ssa/src/back/symbol_export.rs +++ b/compiler/rustc_codegen_ssa/src/back/symbol_export.rs @@ -578,7 +578,7 @@ pub(crate) fn linking_symbol_name_for_instance_in_crate<'tcx>( let prefix = match &target.arch[..] { "x86" | "x86_64" if target.is_like_msvc && undecorated.starts_with("?") => { - return undecorated + return undecorated; } "x86" => Some('_'), "x86_64" => None, From e17debbf1f117daaa10e0ddc9f30a4fd51adc375 Mon Sep 17 00:00:00 2001 From: Ben Kimock Date: Sun, 12 Jan 2025 15:55:37 -0500 Subject: [PATCH 09/90] Test that compiler-builtins is partitioned right --- .../Cargo.toml | 0 .../lib.rs | 0 .../rmake.rs | 5 +- .../compiler-builtins-partitioning/Cargo.toml | 7 ++ .../compiler-builtins-partitioning/lib.rs | 1 + .../compiler-builtins-partitioning/rmake.rs | 105 ++++++++++++++++++ 6 files changed, 117 insertions(+), 1 deletion(-) rename tests/run-make/{compiler-builtins => compiler-builtins-linkage}/Cargo.toml (100%) rename tests/run-make/{compiler-builtins => compiler-builtins-linkage}/lib.rs (100%) rename tests/run-make/{compiler-builtins => compiler-builtins-linkage}/rmake.rs (92%) create mode 100644 tests/run-make/compiler-builtins-partitioning/Cargo.toml create mode 100644 tests/run-make/compiler-builtins-partitioning/lib.rs create mode 100644 tests/run-make/compiler-builtins-partitioning/rmake.rs diff --git a/tests/run-make/compiler-builtins/Cargo.toml b/tests/run-make/compiler-builtins-linkage/Cargo.toml similarity index 100% rename from tests/run-make/compiler-builtins/Cargo.toml rename to tests/run-make/compiler-builtins-linkage/Cargo.toml diff --git a/tests/run-make/compiler-builtins/lib.rs b/tests/run-make/compiler-builtins-linkage/lib.rs similarity index 100% rename from tests/run-make/compiler-builtins/lib.rs rename to tests/run-make/compiler-builtins-linkage/lib.rs diff --git a/tests/run-make/compiler-builtins/rmake.rs b/tests/run-make/compiler-builtins-linkage/rmake.rs similarity index 92% rename from tests/run-make/compiler-builtins/rmake.rs rename to tests/run-make/compiler-builtins-linkage/rmake.rs index 10093db2258df..e45b38003ed23 100644 --- a/tests/run-make/compiler-builtins/rmake.rs +++ b/tests/run-make/compiler-builtins-linkage/rmake.rs @@ -1,4 +1,7 @@ -//! The compiler_builtins library is special. It can call functions in core, but it must not +//! The compiler_builtins library is special. When linkers are passed multiple libraries, they +//! expect undefined symbols mentioned by libraries on the left to be defined in libraries to the +//! right. Since calls to compiler_builtins may be inserted during codegen, it is placed all the way +//! to the right. Therefore, compiler_builtins can call functions in core but it must not //! require linkage against a build of core. If it ever does, building the standard library *may* //! result in linker errors, depending on whether the linker in use applies optimizations first or //! resolves symbols first. So the portable and safe approach is to forbid such a linkage diff --git a/tests/run-make/compiler-builtins-partitioning/Cargo.toml b/tests/run-make/compiler-builtins-partitioning/Cargo.toml new file mode 100644 index 0000000000000..869210c4a683c --- /dev/null +++ b/tests/run-make/compiler-builtins-partitioning/Cargo.toml @@ -0,0 +1,7 @@ +[package] +name = "scratch" +version = "0.1.0" +edition = "2021" + +[lib] +path = "lib.rs" diff --git a/tests/run-make/compiler-builtins-partitioning/lib.rs b/tests/run-make/compiler-builtins-partitioning/lib.rs new file mode 100644 index 0000000000000..0c9ac1ac8e4bd --- /dev/null +++ b/tests/run-make/compiler-builtins-partitioning/lib.rs @@ -0,0 +1 @@ +#![no_std] diff --git a/tests/run-make/compiler-builtins-partitioning/rmake.rs b/tests/run-make/compiler-builtins-partitioning/rmake.rs new file mode 100644 index 0000000000000..d8f5e77494997 --- /dev/null +++ b/tests/run-make/compiler-builtins-partitioning/rmake.rs @@ -0,0 +1,105 @@ +//! The compiler_builtins library is special. It exists to export a number of intrinsics which may +//! also be provided by libgcc or compiler-rt, and when an intrinsic is provided by another +//! library, we want that definition to override the one in compiler_builtins because we expect +//! that those implementations are more optimized than compiler_builtins. To make sure that an +//! attempt to override a compiler_builtins intrinsic does not result in a multiple definitions +//! linker error, the compiler has special CGU partitioning logic for compiler_builtins that +//! ensures every intrinsic gets its own CGU. +//! +//! This test is slightly overfit to the current compiler_builtins CGU naming strategy; it doesn't +//! distinguish between "multiple intrinsics are in one object file!" which would be very bad, and +//! "This object file has an intrinsic and also some of its helper functions!" which would be okay. +//! +//! This test ensures that the compiler_builtins rlib has only one intrinsic in each object file. + +// wasm and nvptx targets don't produce rlib files that object can parse. +//@ ignore-wasm +//@ ignore-nvptx64 + +#![deny(warnings)] + +use std::str; + +use run_make_support::object::read::Object; +use run_make_support::object::read::archive::ArchiveFile; +use run_make_support::object::{ObjectSymbol, SymbolKind}; +use run_make_support::rfs::{read, read_dir}; +use run_make_support::{cargo, object, path, target}; + +fn main() { + println!("Testing compiler_builtins CGU partitioning for {}", target()); + + // CGU partitioning has some special cases for codegen-units=1, so we also test 2 CGUs. + for cgus in [1, 2] { + for profile in ["debug", "release"] { + run_test(profile, cgus); + } + } +} + +fn run_test(profile: &str, cgus: usize) { + println!("Testing with profile {profile} and -Ccodegen-units={cgus}"); + + let target_dir = path("target"); + + let mut cmd = cargo(); + cmd.args(&[ + "build", + "--manifest-path", + "Cargo.toml", + "-Zbuild-std=core", + "--target", + &target(), + ]) + .env("RUSTFLAGS", &format!("-Ccodegen-units={cgus}")) + .env("CARGO_TARGET_DIR", &target_dir) + .env("RUSTC_BOOTSTRAP", "1") + // Visual Studio 2022 requires that the LIB env var be set so it can + // find the Windows SDK. + .env("LIB", std::env::var("LIB").unwrap_or_default()); + if profile == "release" { + cmd.arg("--release"); + } + cmd.run(); + + let rlibs_path = target_dir.join(target()).join(profile).join("deps"); + let compiler_builtins_rlib = read_dir(rlibs_path) + .find_map(|e| { + let path = e.unwrap().path(); + let file_name = path.file_name().unwrap().to_str().unwrap(); + if file_name.starts_with("libcompiler_builtins") && file_name.ends_with(".rlib") { + Some(path) + } else { + None + } + }) + .unwrap(); + + // rlib files are archives, where the archive members are our CGUs, and we also have one called + // lib.rmeta which is the encoded metadata. Each of the CGUs is an object file. + let data = read(compiler_builtins_rlib); + + let archive = ArchiveFile::parse(&*data).unwrap(); + for member in archive.members() { + let member = member.unwrap(); + if member.name() == b"lib.rmeta" { + continue; + } + let data = member.data(&*data).unwrap(); + let object = object::File::parse(&*data).unwrap(); + + let mut global_text_symbols = 0; + println!("Inspecting object {}", str::from_utf8(&member.name()).unwrap()); + for symbol in object + .symbols() + .filter(|symbol| matches!(symbol.kind(), SymbolKind::Text)) + .filter(|symbol| symbol.is_definition() && symbol.is_global()) + { + println!("symbol: {:?}", symbol.name().unwrap()); + global_text_symbols += 1; + } + // Assert that this object/CGU does not define multiple global text symbols. + // We permit the 0 case because some CGUs may only be assigned a static. + assert!(global_text_symbols <= 1); + } +} From 3d41095af9752891b315cda30a4a91ee7db0763b Mon Sep 17 00:00:00 2001 From: Vladislav Date: Sun, 23 Feb 2025 10:51:22 +0100 Subject: [PATCH 10/90] Put shebang at the top of pretty-print --- compiler/rustc_ast_pretty/src/pprust/state.rs | 19 +++++++++++++++++++ tests/pretty/shebang-at-top.pp | 12 ++++++++++++ tests/pretty/shebang-at-top.rs | 6 ++++++ 3 files changed, 37 insertions(+) create mode 100644 tests/pretty/shebang-at-top.pp create mode 100644 tests/pretty/shebang-at-top.rs diff --git a/compiler/rustc_ast_pretty/src/pprust/state.rs b/compiler/rustc_ast_pretty/src/pprust/state.rs index 0bf5de3ef8985..0d6c695108204 100644 --- a/compiler/rustc_ast_pretty/src/pprust/state.rs +++ b/compiler/rustc_ast_pretty/src/pprust/state.rs @@ -243,6 +243,11 @@ pub fn print_crate<'a>( let mut s = State { s: pp::Printer::new(), comments: Some(Comments::new(sm, filename, input)), ann }; + // We need to print shebang before anything else + // otherwise the resulting code will not compile + // and shebang will be useless. + s.maybe_print_shebang(); + if is_expanded && !krate.attrs.iter().any(|attr| attr.has_name(sym::no_core)) { // We need to print `#![no_std]` (and its feature gate) so that // compiling pretty-printed source won't inject libstd again. @@ -574,6 +579,20 @@ pub trait PrintState<'a>: std::ops::Deref + std::ops::Dere self.word(st) } + fn maybe_print_shebang(&mut self) { + if let Some(cmnt) = self.peek_comment() { + // Comment is a shebang if it's: + // Isolated, starts with #! and doesn't continue with `[` + // See [rustc_lexer::strip_shebang] and [gather_comments] from pprust/state.rs for details + if cmnt.style == CommentStyle::Isolated + && cmnt.lines.first().map_or(false, |l| l.starts_with("#!")) + { + let cmnt = self.next_comment().unwrap(); + self.print_comment(cmnt); + } + } + } + fn print_inner_attributes(&mut self, attrs: &[ast::Attribute]) -> bool { self.print_either_attributes(attrs, ast::AttrStyle::Inner, false, true) } diff --git a/tests/pretty/shebang-at-top.pp b/tests/pretty/shebang-at-top.pp new file mode 100644 index 0000000000000..a279725263640 --- /dev/null +++ b/tests/pretty/shebang-at-top.pp @@ -0,0 +1,12 @@ +#!/usr/bin/env rust +#![feature(prelude_import)] +#![no_std] +#[prelude_import] +use ::std::prelude::rust_2015::*; +#[macro_use] +extern crate std; +//@ pretty-mode:expanded +//@ pp-exact:shebang-at-top.pp +//@ pretty-compare-only + +fn main() {} diff --git a/tests/pretty/shebang-at-top.rs b/tests/pretty/shebang-at-top.rs new file mode 100644 index 0000000000000..8bfa925fa1ab1 --- /dev/null +++ b/tests/pretty/shebang-at-top.rs @@ -0,0 +1,6 @@ +#!/usr/bin/env rust +//@ pretty-mode:expanded +//@ pp-exact:shebang-at-top.pp +//@ pretty-compare-only + +fn main() {} From 8c80d2e89a04ca5762ac6efd6b53d7808770f48a Mon Sep 17 00:00:00 2001 From: Veera Date: Sat, 21 Dec 2024 18:16:11 +0000 Subject: [PATCH 11/90] Add Three Codegen Tests --- ...ng-with-bools-no-redundant-instructions.rs | 31 +++++++++++++++ tests/codegen/nonzero-type-not-zero-on-get.rs | 20 ++++++++++ .../unreachable-branch-not-generated.rs | 39 +++++++++++++++++++ 3 files changed, 90 insertions(+) create mode 100644 tests/assembly/indexing-with-bools-no-redundant-instructions.rs create mode 100644 tests/codegen/nonzero-type-not-zero-on-get.rs create mode 100644 tests/codegen/unreachable-branch-not-generated.rs diff --git a/tests/assembly/indexing-with-bools-no-redundant-instructions.rs b/tests/assembly/indexing-with-bools-no-redundant-instructions.rs new file mode 100644 index 0000000000000..af85033b4744a --- /dev/null +++ b/tests/assembly/indexing-with-bools-no-redundant-instructions.rs @@ -0,0 +1,31 @@ +//@ assembly-output: emit-asm +//@ only-x86_64 +//@ ignore-sgx Test incompatible with LVI mitigations +//@ compile-flags: -C opt-level=3 +//! Ensure that indexing a slice with `bool` does not +//! generate any redundant `jmp` and `and` instructions. +//! Discovered in issue #123216. + +#![crate_type = "lib"] + +#[no_mangle] +fn f(a: u32, b: bool, c: bool, d: &mut [u128; 2]) { + // CHECK-LABEL: f: + // CHECK: testl %esi, %esi + // CHECK: je + // CHECK: xorb %dl, %dil + // CHECK: orb $1, (%rcx) + // CHECK: movzbl %dil, %eax + // CHECK: andl $1, %eax + // CHECK: shll $4, %eax + // CHECK: orb $1, (%rcx,%rax) + // CHECK-NOT: jmp + // CHECK-NOT: andl %dil, $1 + // CHECK: retq + let mut a = a & 1 != 0; + if b { + a ^= c; + d[0] |= 1; + } + d[a as usize] |= 1; +} diff --git a/tests/codegen/nonzero-type-not-zero-on-get.rs b/tests/codegen/nonzero-type-not-zero-on-get.rs new file mode 100644 index 0000000000000..313797a15dfca --- /dev/null +++ b/tests/codegen/nonzero-type-not-zero-on-get.rs @@ -0,0 +1,20 @@ +//@ compile-flags: -C opt-level=3 +//! Ensure that `.get()` on `std::num::NonZero*` types do not +//! check for zero equivalency. +//! Discovered in issue #49572. + +#![crate_type = "lib"] + +#[no_mangle] +pub fn foo(x: std::num::NonZeroU32) -> bool { + // CHECK-LABEL: @foo( + // CHECK: ret i1 true + x.get() != 0 +} + +#[no_mangle] +pub fn bar(x: std::num::NonZeroI64) -> bool { + // CHECK-LABEL: @bar( + // CHECK: ret i1 true + x.get() != 0 +} diff --git a/tests/codegen/unreachable-branch-not-generated.rs b/tests/codegen/unreachable-branch-not-generated.rs new file mode 100644 index 0000000000000..9d06ed4c65c1c --- /dev/null +++ b/tests/codegen/unreachable-branch-not-generated.rs @@ -0,0 +1,39 @@ +//@ compile-flags: -C opt-level=3 +//! Ensure that matching on `x % 5` generates an unreachable +//! branch for values greater than 4. +//! Discovered in issue #93514. + +#![crate_type = "lib"] + +#[no_mangle] +pub unsafe fn parse0(x: u32) -> u32 { + // CHECK-LABEL: i32 @parse0( + // CHECK: [[_2:%.*]] = urem + // CHECK-NEXT: switch i32 [[_2]], label %[[DEFAULT_UNREACHABLE1:.*]] [ + // CHECK-NEXT: i32 0 + // CHECK-NEXT: i32 1 + // CHECK-NEXT: i32 2 + // CHECK-NEXT: i32 3 + // CHECK-NEXT: i32 4 + // CHECK-NEXT: ] + // CHECK: [[DEFAULT_UNREACHABLE1]]: + // CHECK-NEXT: unreachable + // CHECK: ret i32 + match x % 5 { + 0 => f1(x), + 1 => f2(x), + 2 => f3(x), + 3 => f4(x), + 4 => f5(x), + _ => eliminate_me(), + } +} + +extern "Rust" { + fn eliminate_me() -> u32; + fn f1(x: u32) -> u32; + fn f2(x: u32) -> u32; + fn f3(x: u32) -> u32; + fn f4(x: u32) -> u32; + fn f5(x: u32) -> u32; +} From cf26d82dafc95d73484b5688ccfc4eec8a9d3e52 Mon Sep 17 00:00:00 2001 From: pudongair <744355276@qq.com> Date: Wed, 26 Mar 2025 15:28:51 +0800 Subject: [PATCH 12/90] chore: remove redundant words in comment Signed-off-by: pudongair <744355276@qq.com> --- compiler/rustc_error_codes/src/error_codes/E0207.md | 2 +- library/core/src/clone.rs | 2 +- library/core/src/macros/mod.rs | 4 ++-- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/compiler/rustc_error_codes/src/error_codes/E0207.md b/compiler/rustc_error_codes/src/error_codes/E0207.md index 5b35748f4723c..f80b0093ecc53 100644 --- a/compiler/rustc_error_codes/src/error_codes/E0207.md +++ b/compiler/rustc_error_codes/src/error_codes/E0207.md @@ -195,7 +195,7 @@ impl<'a> Contains for Foo { Please note that unconstrained lifetime parameters are not supported if they are being used by an associated type. -In cases where the associated type's lifetime is meant to be tied to the the +In cases where the associated type's lifetime is meant to be tied to the self type, and none of the methods on the trait need ownership or different mutability, then an option is to implement the trait on a borrowed type: diff --git a/library/core/src/clone.rs b/library/core/src/clone.rs index e0ac0bfc5289f..647463098610d 100644 --- a/library/core/src/clone.rs +++ b/library/core/src/clone.rs @@ -427,7 +427,7 @@ pub unsafe trait CloneToUninit { /// read or dropped, because even if it was previously valid, it may have been partially /// overwritten. /// - /// The caller may wish to to take care to deallocate the allocation pointed to by `dest`, + /// The caller may wish to take care to deallocate the allocation pointed to by `dest`, /// if applicable, to avoid a memory leak (but this is not a requirement). /// /// Implementors should avoid leaking values by, upon unwinding, dropping all component values diff --git a/library/core/src/macros/mod.rs b/library/core/src/macros/mod.rs index 5f200b31d1ae7..c06f1b56399d2 100644 --- a/library/core/src/macros/mod.rs +++ b/library/core/src/macros/mod.rs @@ -1743,8 +1743,8 @@ pub(crate) mod builtin { /* compiler built-in */ } - /// Provide a list of type aliases and other opaque-type-containing type definitions. - /// This list will be used in the body of the item it is applied to define opaque + /// Provide a list of type aliases and other opaque-type-containing type definitions + /// to an item with a body. This list will be used in that body to define opaque /// types' hidden types. /// Can only be applied to things that have bodies. #[unstable( From 660d1e207b726f05c7f93fe238f9452ccba37c09 Mon Sep 17 00:00:00 2001 From: Flakebi Date: Fri, 28 Mar 2025 10:15:56 +0100 Subject: [PATCH 13/90] Fix linker-plugin-lto only doing thin lto When rust provides LLVM bitcode files to lld and the bitcode contains function summaries as used for thin lto, lld defaults to using thin lto. This prevents some optimizations that are only applied for fat lto. We solve this by not creating function summaries when fat lto is enabled. The bitcode for the module is just directly written out. An alternative solution would be to set the `ThinLTO=0` module flag to signal lld to do fat lto. The code in clang that sets this flag is here: https://github.com/llvm/llvm-project/blob/560149b5e3c891c64899e9912e29467a69dc3a4c/clang/lib/CodeGen/BackendUtil.cpp#L1150 The code in LLVM that queries the flag and defaults to thin lto if not set is here: https://github.com/llvm/llvm-project/blob/e258bca9505f35e0a22cb213a305eea9b76d11ea/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp#L4441-L4446 --- compiler/rustc_codegen_llvm/src/back/write.rs | 2 +- .../src/external_deps/llvm.rs | 30 +++++++++++++++++ .../src/external_deps/rustc.rs | 6 ++++ src/tools/run-make-support/src/lib.rs | 2 +- tests/run-make/cross-lang-lto-clang/rmake.rs | 27 ++++++++++++---- tests/run-make/fat-then-thin-lto/lib.rs | 8 +++++ tests/run-make/fat-then-thin-lto/main.rs | 11 +++++++ tests/run-make/fat-then-thin-lto/rmake.rs | 25 +++++++++++++++ tests/run-make/linker-plugin-lto-fat/ir.ll | 6 ++++ tests/run-make/linker-plugin-lto-fat/main.rs | 17 ++++++++++ tests/run-make/linker-plugin-lto-fat/rmake.rs | 32 +++++++++++++++++++ 11 files changed, 157 insertions(+), 9 deletions(-) create mode 100644 tests/run-make/fat-then-thin-lto/lib.rs create mode 100644 tests/run-make/fat-then-thin-lto/main.rs create mode 100644 tests/run-make/fat-then-thin-lto/rmake.rs create mode 100644 tests/run-make/linker-plugin-lto-fat/ir.ll create mode 100644 tests/run-make/linker-plugin-lto-fat/main.rs create mode 100644 tests/run-make/linker-plugin-lto-fat/rmake.rs diff --git a/compiler/rustc_codegen_llvm/src/back/write.rs b/compiler/rustc_codegen_llvm/src/back/write.rs index bead4c82a8120..0fe41f6801eef 100644 --- a/compiler/rustc_codegen_llvm/src/back/write.rs +++ b/compiler/rustc_codegen_llvm/src/back/write.rs @@ -827,7 +827,7 @@ pub(crate) unsafe fn codegen( "LLVM_module_codegen_make_bitcode", &*module.name, ); - ThinBuffer::new(llmod, config.emit_thin_lto, false) + ThinBuffer::new(llmod, cgcx.lto != Lto::Fat && config.emit_thin_lto, false) }; let data = thin.data(); let _timer = cgcx diff --git a/src/tools/run-make-support/src/external_deps/llvm.rs b/src/tools/run-make-support/src/external_deps/llvm.rs index 9a6e35da3fe20..939160d9f41d8 100644 --- a/src/tools/run-make-support/src/external_deps/llvm.rs +++ b/src/tools/run-make-support/src/external_deps/llvm.rs @@ -60,6 +60,12 @@ pub fn llvm_pdbutil() -> LlvmPdbutil { LlvmPdbutil::new() } +/// Construct a new `llvm-as` invocation. This assumes that `llvm-as` is available +/// at `$LLVM_BIN_DIR/llvm-as`. +pub fn llvm_as() -> LlvmAs { + LlvmAs::new() +} + /// Construct a new `llvm-dis` invocation. This assumes that `llvm-dis` is available /// at `$LLVM_BIN_DIR/llvm-dis`. pub fn llvm_dis() -> LlvmDis { @@ -135,6 +141,13 @@ pub struct LlvmPdbutil { cmd: Command, } +/// A `llvm-as` invocation builder. +#[derive(Debug)] +#[must_use] +pub struct LlvmAs { + cmd: Command, +} + /// A `llvm-dis` invocation builder. #[derive(Debug)] #[must_use] @@ -158,6 +171,7 @@ crate::macros::impl_common_helpers!(LlvmNm); crate::macros::impl_common_helpers!(LlvmBcanalyzer); crate::macros::impl_common_helpers!(LlvmDwarfdump); crate::macros::impl_common_helpers!(LlvmPdbutil); +crate::macros::impl_common_helpers!(LlvmAs); crate::macros::impl_common_helpers!(LlvmDis); crate::macros::impl_common_helpers!(LlvmObjcopy); @@ -441,6 +455,22 @@ impl LlvmObjcopy { } } +impl LlvmAs { + /// Construct a new `llvm-as` invocation. This assumes that `llvm-as` is available + /// at `$LLVM_BIN_DIR/llvm-as`. + pub fn new() -> Self { + let llvm_as = llvm_bin_dir().join("llvm-as"); + let cmd = Command::new(llvm_as); + Self { cmd } + } + + /// Provide an input file. + pub fn input>(&mut self, path: P) -> &mut Self { + self.cmd.arg(path.as_ref()); + self + } +} + impl LlvmDis { /// Construct a new `llvm-dis` invocation. This assumes that `llvm-dis` is available /// at `$LLVM_BIN_DIR/llvm-dis`. diff --git a/src/tools/run-make-support/src/external_deps/rustc.rs b/src/tools/run-make-support/src/external_deps/rustc.rs index 0e2239147f122..e6ea1330e4a8b 100644 --- a/src/tools/run-make-support/src/external_deps/rustc.rs +++ b/src/tools/run-make-support/src/external_deps/rustc.rs @@ -171,6 +171,12 @@ impl Rustc { self } + /// This flag enables LTO in the specified form. + pub fn lto(&mut self, option: &str) -> &mut Self { + self.cmd.arg(format!("-Clto={option}")); + self + } + /// This flag defers LTO optimizations to the linker. pub fn linker_plugin_lto(&mut self, option: &str) -> &mut Self { self.cmd.arg(format!("-Clinker-plugin-lto={option}")); diff --git a/src/tools/run-make-support/src/lib.rs b/src/tools/run-make-support/src/lib.rs index e0ad3ee9bedaa..f7cffea82cb46 100644 --- a/src/tools/run-make-support/src/lib.rs +++ b/src/tools/run-make-support/src/lib.rs @@ -63,7 +63,7 @@ pub use cargo::cargo; pub use clang::{clang, Clang}; pub use htmldocck::htmldocck; pub use llvm::{ - llvm_ar, llvm_bcanalyzer, llvm_dis, llvm_dwarfdump, llvm_filecheck, llvm_nm, llvm_objcopy, + llvm_ar, llvm_bcanalyzer, llvm_as, llvm_dis, llvm_dwarfdump, llvm_filecheck, llvm_nm, llvm_objcopy, llvm_objdump, llvm_profdata, llvm_readobj, LlvmAr, LlvmBcanalyzer, LlvmDis, LlvmDwarfdump, LlvmFilecheck, LlvmNm, LlvmObjcopy, LlvmObjdump, LlvmProfdata, LlvmReadobj, }; diff --git a/tests/run-make/cross-lang-lto-clang/rmake.rs b/tests/run-make/cross-lang-lto-clang/rmake.rs index 3fed6ea20667a..0c4383e2cd815 100644 --- a/tests/run-make/cross-lang-lto-clang/rmake.rs +++ b/tests/run-make/cross-lang-lto-clang/rmake.rs @@ -28,7 +28,16 @@ static C_NEVER_INLINED_PATTERN: &'static str = "bl.*"; static C_NEVER_INLINED_PATTERN: &'static str = "call.*c_never_inlined"; fn main() { + test_lto(false); + test_lto(true); +} + +fn test_lto(fat_lto: bool) { + let lto = if fat_lto { "fat" } else { "thin" }; + let clang_lto = if fat_lto { "full" } else { "thin" }; + rustc() + .lto(lto) .linker_plugin_lto("on") .output(static_lib_name("rustlib-xlto")) .opt_level("2") @@ -36,7 +45,7 @@ fn main() { .input("rustlib.rs") .run(); clang() - .lto("thin") + .lto(clang_lto) .use_ld("lld") .arg("-lrustlib-xlto") .out_exe("cmain") @@ -57,9 +66,10 @@ fn main() { .input("cmain") .run() .assert_stdout_contains_regex(RUST_NEVER_INLINED_PATTERN); - clang().input("clib.c").lto("thin").arg("-c").out_exe("clib.o").arg("-O2").run(); + clang().input("clib.c").lto(clang_lto).arg("-c").out_exe("clib.o").arg("-O2").run(); llvm_ar().obj_to_ar().output_input(static_lib_name("xyz"), "clib.o").run(); rustc() + .lto(lto) .linker_plugin_lto("on") .opt_level("2") .linker(&env_var("CLANG")) @@ -72,9 +82,12 @@ fn main() { .input("rsmain") .run() .assert_stdout_not_contains_regex(C_ALWAYS_INLINED_PATTERN); - llvm_objdump() - .disassemble() - .input("rsmain") - .run() - .assert_stdout_contains_regex(C_NEVER_INLINED_PATTERN); + + let dump = llvm_objdump().disassemble().input("rsmain").run(); + if !fat_lto { + dump.assert_stdout_contains_regex(C_NEVER_INLINED_PATTERN); + } else { + // fat lto inlines this anyway + dump.assert_stdout_not_contains_regex(C_NEVER_INLINED_PATTERN); + } } diff --git a/tests/run-make/fat-then-thin-lto/lib.rs b/tests/run-make/fat-then-thin-lto/lib.rs new file mode 100644 index 0000000000000..3091988368628 --- /dev/null +++ b/tests/run-make/fat-then-thin-lto/lib.rs @@ -0,0 +1,8 @@ +#![feature(no_core, lang_items)] +#![no_core] +#![crate_type = "rlib"] + +#[lang = "sized"] +trait Sized {} + +pub fn foo() {} diff --git a/tests/run-make/fat-then-thin-lto/main.rs b/tests/run-make/fat-then-thin-lto/main.rs new file mode 100644 index 0000000000000..a3f2e18158bc0 --- /dev/null +++ b/tests/run-make/fat-then-thin-lto/main.rs @@ -0,0 +1,11 @@ +#![allow(internal_features)] +#![feature(no_core, lang_items)] +#![no_core] +#![crate_type = "cdylib"] + +extern crate lib; + +#[unsafe(no_mangle)] +pub fn bar() { + lib::foo(); +} diff --git a/tests/run-make/fat-then-thin-lto/rmake.rs b/tests/run-make/fat-then-thin-lto/rmake.rs new file mode 100644 index 0000000000000..ef4f26689d4e8 --- /dev/null +++ b/tests/run-make/fat-then-thin-lto/rmake.rs @@ -0,0 +1,25 @@ +// Compile a library with lto=fat, then compile a binary with lto=thin +// and check that lto is applied with the library. +// The goal is to mimic the standard library being build with lto=fat +// and allowing users to build with lto=thin. + +//@ only-x86_64-unknown-linux-gnu + +use run_make_support::{dynamic_lib_name, llvm_objdump, rustc}; + +fn main() { + rustc().input("lib.rs").opt_level("3").lto("fat").run(); + rustc().input("main.rs").panic("abort").opt_level("3").lto("thin").run(); + + llvm_objdump() + .input(dynamic_lib_name("main")) + .arg("--disassemble-symbols=bar") + .run() + // The called function should be inlined. + // Check that we have a ret (to detect tail + // calls with a jmp) and no call. + .assert_stdout_contains("bar") + .assert_stdout_contains("ret") + .assert_stdout_not_contains("foo") + .assert_stdout_not_contains("call"); +} diff --git a/tests/run-make/linker-plugin-lto-fat/ir.ll b/tests/run-make/linker-plugin-lto-fat/ir.ll new file mode 100644 index 0000000000000..fa3dbdd4e088d --- /dev/null +++ b/tests/run-make/linker-plugin-lto-fat/ir.ll @@ -0,0 +1,6 @@ +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +define void @ir_callee() { + ret void +} diff --git a/tests/run-make/linker-plugin-lto-fat/main.rs b/tests/run-make/linker-plugin-lto-fat/main.rs new file mode 100644 index 0000000000000..3a7b02f4b92e3 --- /dev/null +++ b/tests/run-make/linker-plugin-lto-fat/main.rs @@ -0,0 +1,17 @@ +#![feature(no_core, lang_items)] +#![no_core] +#![crate_type = "cdylib"] + +#[lang = "sized"] +trait Sized {} + +extern "C" { + fn ir_callee(); +} + +#[no_mangle] +extern "C" fn rs_foo() { + unsafe { + ir_callee(); + } +} diff --git a/tests/run-make/linker-plugin-lto-fat/rmake.rs b/tests/run-make/linker-plugin-lto-fat/rmake.rs new file mode 100644 index 0000000000000..0cfc799d2aaa1 --- /dev/null +++ b/tests/run-make/linker-plugin-lto-fat/rmake.rs @@ -0,0 +1,32 @@ +// Check that -C lto=fat with -C linker-plugin-lto actually works and can inline functions. +// A library is created from LLVM IR, defining a single function. Then a dylib is compiled, +// linking to the library and calling the function from the library. +// The function from the library should end up inlined and disappear from the output. + +//@ only-x86_64-unknown-linux-gnu +//@ needs-rust-lld + +use run_make_support::{dynamic_lib_name, llvm_as, llvm_objdump, rustc}; + +fn main() { + llvm_as().input("ir.ll").run(); + rustc() + .input("main.rs") + .opt_level("3") + .lto("fat") + .linker_plugin_lto("on") + .link_arg("ir.bc") + .arg("-Zlinker-features=+lld") + .run(); + + llvm_objdump() + .input(dynamic_lib_name("main")) + .arg("--disassemble-symbols=rs_foo") + .run() + // The called function should be inlined. + // Check that we have a ret (to detect tail + // calls with a jmp) and no call. + .assert_stdout_contains("foo") + .assert_stdout_contains("ret") + .assert_stdout_not_contains("call"); +} From d81559a453d7c9ca0ff9dbd64cf1a9933a54aeab Mon Sep 17 00:00:00 2001 From: Tobias Decking Date: Mon, 31 Mar 2025 19:30:05 +0200 Subject: [PATCH 14/90] Refactor `diy_float` --- library/core/src/num/diy_float.rs | 54 ++++--------------- .../core/src/num/flt2dec/strategy/grisu.rs | 8 +-- 2 files changed, 15 insertions(+), 47 deletions(-) diff --git a/library/core/src/num/diy_float.rs b/library/core/src/num/diy_float.rs index ce7f6475d0599..e054e7f3f10a7 100644 --- a/library/core/src/num/diy_float.rs +++ b/library/core/src/num/diy_float.rs @@ -21,61 +21,29 @@ pub struct Fp { impl Fp { /// Returns a correctly rounded product of itself and `other`. - pub fn mul(&self, other: &Fp) -> Fp { - const MASK: u64 = 0xffffffff; - let a = self.f >> 32; - let b = self.f & MASK; - let c = other.f >> 32; - let d = other.f & MASK; - let ac = a * c; - let bc = b * c; - let ad = a * d; - let bd = b * d; - let tmp = (bd >> 32) + (ad & MASK) + (bc & MASK) + (1 << 31) /* round */; - let f = ac + (ad >> 32) + (bc >> 32) + (tmp >> 32); + pub fn mul(self, other: Self) -> Self { + let (lo, hi) = self.f.widening_mul(other.f); + let f = hi + (lo >> 63) /* round */; let e = self.e + other.e + 64; - Fp { f, e } + Self { f, e } } /// Normalizes itself so that the resulting mantissa is at least `2^63`. - pub fn normalize(&self) -> Fp { - let mut f = self.f; - let mut e = self.e; - if f >> (64 - 32) == 0 { - f <<= 32; - e -= 32; - } - if f >> (64 - 16) == 0 { - f <<= 16; - e -= 16; - } - if f >> (64 - 8) == 0 { - f <<= 8; - e -= 8; - } - if f >> (64 - 4) == 0 { - f <<= 4; - e -= 4; - } - if f >> (64 - 2) == 0 { - f <<= 2; - e -= 2; - } - if f >> (64 - 1) == 0 { - f <<= 1; - e -= 1; - } + pub fn normalize(self) -> Self { + let lz = self.f.leading_zeros(); + let f = self.f << lz; + let e = self.e - lz as i16; debug_assert!(f >= (1 << 63)); - Fp { f, e } + Self { f, e } } /// Normalizes itself to have the shared exponent. /// It can only decrease the exponent (and thus increase the mantissa). - pub fn normalize_to(&self, e: i16) -> Fp { + pub fn normalize_to(self, e: i16) -> Self { let edelta = self.e - e; assert!(edelta >= 0); let edelta = edelta as usize; assert_eq!(self.f << edelta >> edelta, self.f); - Fp { f: self.f << edelta, e } + Self { f: self.f << edelta, e } } } diff --git a/library/core/src/num/flt2dec/strategy/grisu.rs b/library/core/src/num/flt2dec/strategy/grisu.rs index 2816de4c63339..d3bbb0934e0ff 100644 --- a/library/core/src/num/flt2dec/strategy/grisu.rs +++ b/library/core/src/num/flt2dec/strategy/grisu.rs @@ -196,9 +196,9 @@ pub fn format_shortest_opt<'a>( let (minusk, cached) = cached_power(ALPHA - plus.e - 64, GAMMA - plus.e - 64); // scale fps. this gives the maximal error of 1 ulp (proved from Theorem 5.1). - let plus = plus.mul(&cached); - let minus = minus.mul(&cached); - let v = v.mul(&cached); + let plus = plus.mul(cached); + let minus = minus.mul(cached); + let v = v.mul(cached); debug_assert_eq!(plus.e, minus.e); debug_assert_eq!(plus.e, v.e); @@ -480,7 +480,7 @@ pub fn format_exact_opt<'a>( // normalize and scale `v`. let v = Fp { f: d.mant, e: d.exp }.normalize(); let (minusk, cached) = cached_power(ALPHA - v.e - 64, GAMMA - v.e - 64); - let v = v.mul(&cached); + let v = v.mul(cached); // divide `v` into integral and fractional parts. let e = -v.e as usize; From ff37c7d3954ce9d1c9265e7c82a0bb7b6eba6fee Mon Sep 17 00:00:00 2001 From: joboet Date: Tue, 1 Apr 2025 13:35:16 +0200 Subject: [PATCH 15/90] std: use the address of `errno` to identify threads in `unique_thread_exit` Getting the address of `errno` should be just as cheap as `pthread_self()` and avoids having to use the expensive `Mutex` logic because it always results in a pointer. --- library/std/src/sys/exit_guard.rs | 43 ++++++++++++++---------------- library/std/src/sys/pal/unix/os.rs | 2 +- 2 files changed, 21 insertions(+), 24 deletions(-) diff --git a/library/std/src/sys/exit_guard.rs b/library/std/src/sys/exit_guard.rs index 5a090f506661d..bd70d1782440f 100644 --- a/library/std/src/sys/exit_guard.rs +++ b/library/std/src/sys/exit_guard.rs @@ -1,14 +1,5 @@ cfg_if::cfg_if! { if #[cfg(target_os = "linux")] { - /// pthread_t is a pointer on some platforms, - /// so we wrap it in this to impl Send + Sync. - #[derive(Clone, Copy)] - #[repr(transparent)] - struct PThread(libc::pthread_t); - // Safety: pthread_t is safe to send between threads - unsafe impl Send for PThread {} - // Safety: pthread_t is safe to share between threads - unsafe impl Sync for PThread {} /// Mitigation for /// /// On glibc, `libc::exit` has been observed to not always be thread-safe. @@ -30,28 +21,34 @@ cfg_if::cfg_if! { /// (waiting for the process to exit). #[cfg_attr(any(test, doctest), allow(dead_code))] pub(crate) fn unique_thread_exit() { - let this_thread_id = unsafe { libc::pthread_self() }; - use crate::sync::{Mutex, PoisonError}; - static EXITING_THREAD_ID: Mutex> = Mutex::new(None); - let mut exiting_thread_id = - EXITING_THREAD_ID.lock().unwrap_or_else(PoisonError::into_inner); - match *exiting_thread_id { - None => { + use crate::ffi::c_int; + use crate::ptr; + use crate::sync::atomic::AtomicPtr; + use crate::sync::atomic::Ordering::{Acquire, Relaxed}; + + static EXITING_THREAD_ID: AtomicPtr = AtomicPtr::new(ptr::null_mut()); + + // We use the address of `errno` as a cheap and safe way to identify + // threads. As the C standard mandates that `errno` must have thread + // storage duration, we can rely on its address not changing over the + // lifetime of the thread. Additionally, accesses to `errno` are + // async-signal-safe, so this function is available in all imaginable + // circumstances. + let this_thread_id = crate::sys::os::errno_location(); + match EXITING_THREAD_ID.compare_exchange(ptr::null_mut(), this_thread_id, Acquire, Relaxed) { + Ok(_) => { // This is the first thread to call `unique_thread_exit`, - // and this is the first time it is called. - // Set EXITING_THREAD_ID to this thread's ID and return. - *exiting_thread_id = Some(PThread(this_thread_id)); - }, - Some(exiting_thread_id) if exiting_thread_id.0 == this_thread_id => { + // and this is the first time it is called. Continue exiting. + } + Err(exiting_thread_id) if exiting_thread_id == this_thread_id => { // This is the first thread to call `unique_thread_exit`, // but this is the second time it is called. // Abort the process. core::panicking::panic_nounwind("std::process::exit called re-entrantly") } - Some(_) => { + Err(_) => { // This is not the first thread to call `unique_thread_exit`. // Pause until the process exits. - drop(exiting_thread_id); loop { // Safety: libc::pause is safe to call. unsafe { libc::pause(); } diff --git a/library/std/src/sys/pal/unix/os.rs b/library/std/src/sys/pal/unix/os.rs index f47421c67051b..3b712f316cd00 100644 --- a/library/std/src/sys/pal/unix/os.rs +++ b/library/std/src/sys/pal/unix/os.rs @@ -61,7 +61,7 @@ unsafe extern "C" { #[cfg_attr(target_os = "aix", link_name = "_Errno")] // SAFETY: this will always return the same pointer on a given thread. #[unsafe(ffi_const)] - fn errno_location() -> *mut c_int; + pub safe fn errno_location() -> *mut c_int; } /// Returns the platform-specific value of errno From cbfe1f5f587c314ad64c57a7c7d2b38cdb3d3b7e Mon Sep 17 00:00:00 2001 From: Samuel Tardieu Date: Thu, 3 Apr 2025 00:02:44 +0200 Subject: [PATCH 16/90] Restrict the cases where `ptr_eq` triggers `ptr_eq` was recently enhanced to lint on more cases of raw pointers comparison: - lint on all raw pointer comparison, by proposing to use `[core|std]::ptr::eq(lhs, rhs)` instead of `lhs == rhs`; - removing one symetric `as usize` on each size if needed - peeling any level of `as *[const|mut] _` if the remaining expression can still be coerced into the original one (i.e., is a ref or raw pointer to the same type as before) The current change restricts the lint to the cases where at least one level of symetric `as usize`, or any conversion to a raw pointer, could be removed. For example, a direct comparaison of two raw pointers will not trigger the lint anymore. --- clippy_lints/src/ptr.rs | 22 ++++++++++++-------- tests/ui/ptr_eq.fixed | 26 +++++++++++++----------- tests/ui/ptr_eq.rs | 16 ++++++++------- tests/ui/ptr_eq.stderr | 38 ++++------------------------------- tests/ui/ptr_eq_no_std.fixed | 20 +++++++++--------- tests/ui/ptr_eq_no_std.rs | 12 ++++++----- tests/ui/ptr_eq_no_std.stderr | 26 +----------------------- 7 files changed, 60 insertions(+), 100 deletions(-) diff --git a/clippy_lints/src/ptr.rs b/clippy_lints/src/ptr.rs index 5fb4d3a837b12..b76e54c382db6 100644 --- a/clippy_lints/src/ptr.rs +++ b/clippy_lints/src/ptr.rs @@ -715,9 +715,9 @@ fn check_ptr_eq<'tcx>( } // Remove one level of usize conversion if any - let (left, right) = match (expr_as_cast_to_usize(cx, left), expr_as_cast_to_usize(cx, right)) { - (Some(lhs), Some(rhs)) => (lhs, rhs), - _ => (left, right), + let (left, right, usize_peeled) = match (expr_as_cast_to_usize(cx, left), expr_as_cast_to_usize(cx, right)) { + (Some(lhs), Some(rhs)) => (lhs, rhs, true), + _ => (left, right, false), }; // This lint concerns raw pointers @@ -726,7 +726,12 @@ fn check_ptr_eq<'tcx>( return; } - let (left_var, right_var) = (peel_raw_casts(cx, left, left_ty), peel_raw_casts(cx, right, right_ty)); + let ((left_var, left_casts_peeled), (right_var, right_casts_peeled)) = + (peel_raw_casts(cx, left, left_ty), peel_raw_casts(cx, right, right_ty)); + + if !(usize_peeled || left_casts_peeled || right_casts_peeled) { + return; + } let mut app = Applicability::MachineApplicable; let left_snip = Sugg::hir_with_context(cx, left_var, expr.span.ctxt(), "_", &mut app); @@ -759,8 +764,9 @@ fn expr_as_cast_to_usize<'tcx>(cx: &LateContext<'tcx>, cast_expr: &'tcx Expr<'_> } } -// Peel raw casts if the remaining expression can be coerced to it -fn peel_raw_casts<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>, expr_ty: Ty<'tcx>) -> &'tcx Expr<'tcx> { +// Peel raw casts if the remaining expression can be coerced to it, and whether casts have been +// peeled or not. +fn peel_raw_casts<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>, expr_ty: Ty<'tcx>) -> (&'tcx Expr<'tcx>, bool) { if !expr.span.from_expansion() && let ExprKind::Cast(inner, _) = expr.kind && let ty::RawPtr(target_ty, _) = expr_ty.kind() @@ -768,8 +774,8 @@ fn peel_raw_casts<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>, expr_ty: && let ty::RawPtr(inner_target_ty, _) | ty::Ref(_, inner_target_ty, _) = inner_ty.kind() && target_ty == inner_target_ty { - peel_raw_casts(cx, inner, inner_ty) + (peel_raw_casts(cx, inner, inner_ty).0, true) } else { - expr + (expr, false) } } diff --git a/tests/ui/ptr_eq.fixed b/tests/ui/ptr_eq.fixed index 484ff30732392..f0150e6784b48 100644 --- a/tests/ui/ptr_eq.fixed +++ b/tests/ui/ptr_eq.fixed @@ -23,23 +23,25 @@ fn main() { //~^ ptr_eq let _ = std::ptr::eq(a, b); //~^ ptr_eq - let _ = std::ptr::eq(a.as_ptr(), b as *const _); - //~^ ptr_eq - let _ = std::ptr::eq(a.as_ptr(), b.as_ptr()); - //~^ ptr_eq - // Do not lint + // Do not lint: the rhs conversion is needed + let _ = a.as_ptr() == b as *const _; + // Do not lint: we have two raw pointers already + let _ = a.as_ptr() == b.as_ptr(); + + // Do not lint let _ = mac!(a, b); let _ = another_mac!(a, b); let a = &mut [1, 2, 3]; let b = &mut [1, 2, 3]; - let _ = std::ptr::eq(a.as_mut_ptr(), b as *mut [i32] as *mut _); - //~^ ptr_eq - let _ = std::ptr::eq(a.as_mut_ptr(), b.as_mut_ptr()); - //~^ ptr_eq + // Do not lint: the rhs conversion is needed + let _ = a.as_mut_ptr() == b as *mut [i32] as *mut _; + + // Do not lint: we have two raw pointers already + let _ = a.as_mut_ptr() == b.as_mut_ptr(); let _ = a == b; let _ = core::ptr::eq(a, b); @@ -51,9 +53,9 @@ fn main() { let _ = !std::ptr::eq(x, y); //~^ ptr_eq - #[allow(clippy::eq_op)] - let _issue14337 = std::ptr::eq(main as *const (), main as *const ()); - //~^ ptr_eq + #[expect(clippy::eq_op)] + // Do not lint: casts are needed to not change type + let _issue14337 = main as *const () == main as *const (); // Do not peel the content of macros let _ = std::ptr::eq(mac!(cast a), mac!(cast b)); diff --git a/tests/ui/ptr_eq.rs b/tests/ui/ptr_eq.rs index f28707cc3e927..3fb89257cf1b3 100644 --- a/tests/ui/ptr_eq.rs +++ b/tests/ui/ptr_eq.rs @@ -23,23 +23,25 @@ fn main() { //~^ ptr_eq let _ = a as *const _ == b as *const _; //~^ ptr_eq + + // Do not lint: the rhs conversion is needed let _ = a.as_ptr() == b as *const _; - //~^ ptr_eq + + // Do not lint: we have two raw pointers already let _ = a.as_ptr() == b.as_ptr(); - //~^ ptr_eq // Do not lint - let _ = mac!(a, b); let _ = another_mac!(a, b); let a = &mut [1, 2, 3]; let b = &mut [1, 2, 3]; + // Do not lint: the rhs conversion is needed let _ = a.as_mut_ptr() == b as *mut [i32] as *mut _; - //~^ ptr_eq + + // Do not lint: we have two raw pointers already let _ = a.as_mut_ptr() == b.as_mut_ptr(); - //~^ ptr_eq let _ = a == b; let _ = core::ptr::eq(a, b); @@ -51,9 +53,9 @@ fn main() { let _ = x as *const u32 != y as *mut u32 as *const u32; //~^ ptr_eq - #[allow(clippy::eq_op)] + #[expect(clippy::eq_op)] + // Do not lint: casts are needed to not change type let _issue14337 = main as *const () == main as *const (); - //~^ ptr_eq // Do not peel the content of macros let _ = mac!(cast a) as *const _ == mac!(cast b) as *const _; diff --git a/tests/ui/ptr_eq.stderr b/tests/ui/ptr_eq.stderr index 906831b9e0312..f613e164b879f 100644 --- a/tests/ui/ptr_eq.stderr +++ b/tests/ui/ptr_eq.stderr @@ -14,52 +14,22 @@ LL | let _ = a as *const _ == b as *const _; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `std::ptr::eq(a, b)` error: use `std::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq.rs:26:13 - | -LL | let _ = a.as_ptr() == b as *const _; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `std::ptr::eq(a.as_ptr(), b as *const _)` - -error: use `std::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq.rs:28:13 - | -LL | let _ = a.as_ptr() == b.as_ptr(); - | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `std::ptr::eq(a.as_ptr(), b.as_ptr())` - -error: use `std::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq.rs:39:13 - | -LL | let _ = a.as_mut_ptr() == b as *mut [i32] as *mut _; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `std::ptr::eq(a.as_mut_ptr(), b as *mut [i32] as *mut _)` - -error: use `std::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq.rs:41:13 - | -LL | let _ = a.as_mut_ptr() == b.as_mut_ptr(); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `std::ptr::eq(a.as_mut_ptr(), b.as_mut_ptr())` - -error: use `std::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq.rs:48:13 + --> tests/ui/ptr_eq.rs:50:13 | LL | let _ = x as *const u32 == y as *mut u32 as *const u32; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `std::ptr::eq(x, y)` error: use `std::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq.rs:51:13 + --> tests/ui/ptr_eq.rs:53:13 | LL | let _ = x as *const u32 != y as *mut u32 as *const u32; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `!std::ptr::eq(x, y)` error: use `std::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq.rs:55:23 - | -LL | let _issue14337 = main as *const () == main as *const (); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `std::ptr::eq(main as *const (), main as *const ())` - -error: use `std::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq.rs:59:13 + --> tests/ui/ptr_eq.rs:61:13 | LL | let _ = mac!(cast a) as *const _ == mac!(cast b) as *const _; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `std::ptr::eq(mac!(cast a), mac!(cast b))` -error: aborting due to 10 previous errors +error: aborting due to 5 previous errors diff --git a/tests/ui/ptr_eq_no_std.fixed b/tests/ui/ptr_eq_no_std.fixed index d8ee4ea88f843..48cbad62e1a36 100644 --- a/tests/ui/ptr_eq_no_std.fixed +++ b/tests/ui/ptr_eq_no_std.fixed @@ -32,23 +32,25 @@ fn main() { //~^ ptr_eq let _ = core::ptr::eq(a, b); //~^ ptr_eq - let _ = core::ptr::eq(a.as_ptr(), b as *const _); - //~^ ptr_eq - let _ = core::ptr::eq(a.as_ptr(), b.as_ptr()); - //~^ ptr_eq - // Do not lint + // Do not lint: the rhs conversion is needed + let _ = a.as_ptr() == b as *const _; + + // Do not lint: we have two raw pointers already + let _ = a.as_ptr() == b.as_ptr(); + // Do not lint let _ = mac!(a, b); let _ = another_mac!(a, b); let a = &mut [1, 2, 3]; let b = &mut [1, 2, 3]; - let _ = core::ptr::eq(a.as_mut_ptr(), b as *mut [i32] as *mut _); - //~^ ptr_eq - let _ = core::ptr::eq(a.as_mut_ptr(), b.as_mut_ptr()); - //~^ ptr_eq + // Do not lint: the rhs conversion is needed + let _ = a.as_mut_ptr() == b as *mut [i32] as *mut _; + + // Do not lint: we have two raw pointers already + let _ = a.as_mut_ptr() == b.as_mut_ptr(); let _ = a == b; let _ = core::ptr::eq(a, b); diff --git a/tests/ui/ptr_eq_no_std.rs b/tests/ui/ptr_eq_no_std.rs index a236314c29b77..3827178640eea 100644 --- a/tests/ui/ptr_eq_no_std.rs +++ b/tests/ui/ptr_eq_no_std.rs @@ -32,23 +32,25 @@ fn main() { //~^ ptr_eq let _ = a as *const _ == b as *const _; //~^ ptr_eq + + // Do not lint: the rhs conversion is needed let _ = a.as_ptr() == b as *const _; - //~^ ptr_eq + + // Do not lint: we have two raw pointers already let _ = a.as_ptr() == b.as_ptr(); - //~^ ptr_eq // Do not lint - let _ = mac!(a, b); let _ = another_mac!(a, b); let a = &mut [1, 2, 3]; let b = &mut [1, 2, 3]; + // Do not lint: the rhs conversion is needed let _ = a.as_mut_ptr() == b as *mut [i32] as *mut _; - //~^ ptr_eq + + // Do not lint: we have two raw pointers already let _ = a.as_mut_ptr() == b.as_mut_ptr(); - //~^ ptr_eq let _ = a == b; let _ = core::ptr::eq(a, b); diff --git a/tests/ui/ptr_eq_no_std.stderr b/tests/ui/ptr_eq_no_std.stderr index 5b8135dc8e8bc..8c7b1ff76661f 100644 --- a/tests/ui/ptr_eq_no_std.stderr +++ b/tests/ui/ptr_eq_no_std.stderr @@ -13,29 +13,5 @@ error: use `core::ptr::eq` when comparing raw pointers LL | let _ = a as *const _ == b as *const _; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `core::ptr::eq(a, b)` -error: use `core::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq_no_std.rs:35:13 - | -LL | let _ = a.as_ptr() == b as *const _; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `core::ptr::eq(a.as_ptr(), b as *const _)` - -error: use `core::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq_no_std.rs:37:13 - | -LL | let _ = a.as_ptr() == b.as_ptr(); - | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `core::ptr::eq(a.as_ptr(), b.as_ptr())` - -error: use `core::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq_no_std.rs:48:13 - | -LL | let _ = a.as_mut_ptr() == b as *mut [i32] as *mut _; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `core::ptr::eq(a.as_mut_ptr(), b as *mut [i32] as *mut _)` - -error: use `core::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq_no_std.rs:50:13 - | -LL | let _ = a.as_mut_ptr() == b.as_mut_ptr(); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `core::ptr::eq(a.as_mut_ptr(), b.as_mut_ptr())` - -error: aborting due to 6 previous errors +error: aborting due to 2 previous errors From a576362620a5e0691054a48fcdc7ba5038c042c5 Mon Sep 17 00:00:00 2001 From: Lynnesbian Date: Thu, 10 Apr 2025 10:58:49 +1000 Subject: [PATCH 17/90] Document async block control flow in async keyword --- library/std/src/keyword_docs.rs | 38 +++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/library/std/src/keyword_docs.rs b/library/std/src/keyword_docs.rs index c07c391892d80..93306296847cd 100644 --- a/library/std/src/keyword_docs.rs +++ b/library/std/src/keyword_docs.rs @@ -2388,6 +2388,40 @@ mod while_keyword {} /// /// We have written an [async book] detailing `async`/`await` and trade-offs compared to using threads. /// +/// ## Control Flow +/// [`return`] statements and [`?`][try operator] operators within `async` blocks do not cause +/// a return from the parent function; rather, they cause the `Future` returned by the block to +/// return with that value. +/// +/// For example, the following Rust function will return `5`, assigning the `!` value to `x`, which +/// goes unused: +/// ```rust +/// #[expect(unused_variables)] +/// fn example() -> i32 { +/// let x = { +/// return 5; +/// }; +/// } +/// ``` +/// In contrast, the following asynchronous function assigns a `Future` to `x`, and +/// only returns `5` when `x` is `.await`ed: +/// ```rust +/// async fn example() -> i32 { +/// let x = async { +/// return 5; +/// }; +/// +/// x.await +/// } +/// ``` +/// Code using `?` behaves similarly - it causes the `async` block to return a [`Result`] without +/// affecting the parent function. +/// +/// Note that you cannot use `break` or `continue` from within an `async` block to affect the +/// control flow of a loop in the parent function. +/// +/// Control flow in `async` blocks is documented further in the [async book][async book blocks]. +/// /// ## Editions /// /// `async` is a keyword from the 2018 edition onwards. @@ -2397,6 +2431,10 @@ mod while_keyword {} /// [`Future`]: future::Future /// [`.await`]: ../std/keyword.await.html /// [async book]: https://rust-lang.github.io/async-book/ +/// [`return`]: ../std/keyword.return.html +/// [try operator]: ../reference/expressions/operator-expr.html#r-expr.try +/// [`Result`]: result::Result +/// [async book blocks]: https://rust-lang.github.io/async-book/part-guide/more-async-await.html#async-blocks mod async_keyword {} #[doc(keyword = "await")] From e2caab1822d858de4525ae615002094ab6e06734 Mon Sep 17 00:00:00 2001 From: Lynnesbian Date: Thu, 10 Apr 2025 11:11:09 +1000 Subject: [PATCH 18/90] Doc more control flow behaviour for return keyword --- library/std/src/keyword_docs.rs | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/library/std/src/keyword_docs.rs b/library/std/src/keyword_docs.rs index 93306296847cd..b8eb0fd104c3c 100644 --- a/library/std/src/keyword_docs.rs +++ b/library/std/src/keyword_docs.rs @@ -1195,6 +1195,28 @@ mod ref_keyword {} /// Ok(()) /// } /// ``` +/// +/// Within [closures] and [`async`] blocks, `return` returns a value from within the closure or +/// `async` block, not from the parent function: +/// +/// ```rust +/// fn foo() -> i32 { +/// let closure = || { +/// return 5; +/// }; +/// +/// let future = async { +/// return 10; +/// }; +/// +/// return 15; +/// } +/// +/// assert_eq!(foo(), 15); +/// ``` +/// +/// [closures]: ../book/ch13-01-closures.html +/// [`async`]: ../std/keyword.async.html mod return_keyword {} #[doc(keyword = "self")] From e5fb426a833e45565f13f81c2c664e77e0e351f1 Mon Sep 17 00:00:00 2001 From: Diego Ongaro Date: Sun, 13 Apr 2025 19:52:34 -0700 Subject: [PATCH 19/90] docs: Add example to `Iterator::take` with `by_ref` If you want to logically split an iterator after `n` items, you might first discover `take`. Before this change, you'd find that `take` consumes the iterator, and you'd probably be stuck. The answer involves `by_ref`, but that's hard to discover, especially since `by_ref` is a bit abstract and `Iterator` has many methods. After this change, you'd see the example showing `take` along with `by_ref`, which allows you to continue using the rest of the iterator. `by_ref` had a good example involving `take` already, so this change just duplicates that existing example under `take`. --- library/core/src/iter/traits/iterator.rs | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/library/core/src/iter/traits/iterator.rs b/library/core/src/iter/traits/iterator.rs index d9534a445980f..c68fd2115d689 100644 --- a/library/core/src/iter/traits/iterator.rs +++ b/library/core/src/iter/traits/iterator.rs @@ -1340,6 +1340,24 @@ pub trait Iterator { /// assert_eq!(iter.next(), Some(2)); /// assert_eq!(iter.next(), None); /// ``` + /// + /// Use [`by_ref`] to take from the iterator without consuming it, and then + /// continue using the original iterator: + /// + /// ``` + /// let mut words = ["hello", "world", "of", "Rust"].into_iter(); + /// + /// // Take the first two words. + /// let hello_world: Vec<_> = words.by_ref().take(2).collect(); + /// assert_eq!(hello_world, vec!["hello", "world"]); + /// + /// // Collect the rest of the words. + /// // We can only do this because we used `by_ref` earlier. + /// let of_rust: Vec<_> = words.collect(); + /// assert_eq!(of_rust, vec!["of", "Rust"]); + /// ``` + /// + /// [`by_ref`]: Iterator::by_ref #[inline] #[stable(feature = "rust1", since = "1.0.0")] fn take(self, n: usize) -> Take From 0369ccb5320da3871bc03e6b0df8afbbfac0c9b9 Mon Sep 17 00:00:00 2001 From: Janggun Lee Date: Mon, 14 Apr 2025 22:26:43 +0900 Subject: [PATCH 20/90] Fix some grammar errors and hyperlinks in doc for `trait Allocator` * "while until either" could also be changed to "for a while until either", but I just deleted "while". * fixed sentence with incorrect "at" and "has/have". * linked [*currently allocated*] similar to other methods. --- library/core/src/alloc/mod.rs | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/library/core/src/alloc/mod.rs b/library/core/src/alloc/mod.rs index 9805cee1c331e..9d608d5e83c40 100644 --- a/library/core/src/alloc/mod.rs +++ b/library/core/src/alloc/mod.rs @@ -90,7 +90,7 @@ impl fmt::Display for AllocError { /// # Safety /// /// Memory blocks that are [*currently allocated*] by an allocator, -/// must point to valid memory, and retain their validity while until either: +/// must point to valid memory, and retain their validity until either: /// - the memory block is deallocated, or /// - the allocator is dropped. /// @@ -112,7 +112,9 @@ pub unsafe trait Allocator { /// /// The returned block of memory remains valid as long as it is [*currently allocated*] and the shorter of: /// - the borrow-checker lifetime of the allocator type itself. - /// - as long as at the allocator and all its clones has not been dropped. + /// - as long as the allocator and all its clones have not been dropped. + /// + /// [*currently allocated*]: #currently-allocated-memory /// /// # Errors /// From 31cb737dee5193ba44ce26c429057f4681510fe7 Mon Sep 17 00:00:00 2001 From: Ralf Jung Date: Sat, 19 Apr 2025 11:22:10 +0200 Subject: [PATCH 21/90] simd_select_bitmask: the 'padding' bits in the mask are just ignored --- library/core/src/intrinsics/simd.rs | 4 +--- src/tools/miri/src/intrinsics/simd.rs | 13 +------------ .../intrinsics/simd-select-bitmask-invalid.rs | 15 --------------- .../intrinsics/simd-select-bitmask-invalid.stderr | 15 --------------- .../miri/tests/pass/intrinsics/portable-simd.rs | 13 +++++++++++++ 5 files changed, 15 insertions(+), 45 deletions(-) delete mode 100644 src/tools/miri/tests/fail/intrinsics/simd-select-bitmask-invalid.rs delete mode 100644 src/tools/miri/tests/fail/intrinsics/simd-select-bitmask-invalid.stderr diff --git a/library/core/src/intrinsics/simd.rs b/library/core/src/intrinsics/simd.rs index 9ac6ee8553558..facc2e7f0853b 100644 --- a/library/core/src/intrinsics/simd.rs +++ b/library/core/src/intrinsics/simd.rs @@ -577,11 +577,9 @@ pub unsafe fn simd_select(mask: M, if_true: T, if_false: T) -> T; /// For each element, if the bit in `mask` is `1`, select the element from /// `if_true`. If the corresponding bit in `mask` is `0`, select the element from /// `if_false`. +/// The remaining bits of the mask are ignored. /// /// The bitmask bit order matches `simd_bitmask`. -/// -/// # Safety -/// Padding bits must be all zero. #[rustc_intrinsic] #[rustc_nounwind] pub unsafe fn simd_select_bitmask(m: M, yes: T, no: T) -> T; diff --git a/src/tools/miri/src/intrinsics/simd.rs b/src/tools/miri/src/intrinsics/simd.rs index de5da6ec898a4..c9250ba1b818d 100644 --- a/src/tools/miri/src/intrinsics/simd.rs +++ b/src/tools/miri/src/intrinsics/simd.rs @@ -506,7 +506,6 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { }; let dest_len = u32::try_from(dest_len).unwrap(); - let bitmask_len = u32::try_from(bitmask_len).unwrap(); for i in 0..dest_len { let bit_i = simd_bitmask_index(i, dest_len, this.data_layout().endian); let mask = mask & 1u64.strict_shl(bit_i); @@ -517,17 +516,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { let val = if mask != 0 { yes } else { no }; this.write_immediate(*val, &dest)?; } - for i in dest_len..bitmask_len { - // If the mask is "padded", ensure that padding is all-zero. - // This deliberately does not use `simd_bitmask_index`; these bits are outside - // the bitmask. It does not matter in which order we check them. - let mask = mask & 1u64.strict_shl(i); - if mask != 0 { - throw_ub_format!( - "a SIMD bitmask less than 8 bits long must be filled with 0s for the remaining bits" - ); - } - } + // The remaining bits of the mask are ignored. } // Converts a "vector of bool" into a bitmask. "bitmask" => { diff --git a/src/tools/miri/tests/fail/intrinsics/simd-select-bitmask-invalid.rs b/src/tools/miri/tests/fail/intrinsics/simd-select-bitmask-invalid.rs deleted file mode 100644 index 409098ac3b5df..0000000000000 --- a/src/tools/miri/tests/fail/intrinsics/simd-select-bitmask-invalid.rs +++ /dev/null @@ -1,15 +0,0 @@ -#![feature(core_intrinsics, repr_simd)] - -use std::intrinsics::simd::simd_select_bitmask; - -#[repr(simd)] -#[allow(non_camel_case_types)] -#[derive(Copy, Clone)] -struct i32x2([i32; 2]); - -fn main() { - unsafe { - let x = i32x2([0, 1]); - simd_select_bitmask(0b11111111u8, x, x); //~ERROR: bitmask less than 8 bits long must be filled with 0s for the remaining bits - } -} diff --git a/src/tools/miri/tests/fail/intrinsics/simd-select-bitmask-invalid.stderr b/src/tools/miri/tests/fail/intrinsics/simd-select-bitmask-invalid.stderr deleted file mode 100644 index 9acb51d8c5f36..0000000000000 --- a/src/tools/miri/tests/fail/intrinsics/simd-select-bitmask-invalid.stderr +++ /dev/null @@ -1,15 +0,0 @@ -error: Undefined Behavior: a SIMD bitmask less than 8 bits long must be filled with 0s for the remaining bits - --> tests/fail/intrinsics/simd-select-bitmask-invalid.rs:LL:CC - | -LL | simd_select_bitmask(0b11111111u8, x, x); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ a SIMD bitmask less than 8 bits long must be filled with 0s for the remaining bits - | - = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior - = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information - = note: BACKTRACE: - = note: inside `main` at tests/fail/intrinsics/simd-select-bitmask-invalid.rs:LL:CC - -note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace - -error: aborting due to 1 previous error - diff --git a/src/tools/miri/tests/pass/intrinsics/portable-simd.rs b/src/tools/miri/tests/pass/intrinsics/portable-simd.rs index cc753dac2156f..e14ce51f35a3f 100644 --- a/src/tools/miri/tests/pass/intrinsics/portable-simd.rs +++ b/src/tools/miri/tests/pass/intrinsics/portable-simd.rs @@ -331,6 +331,19 @@ fn simd_mask() { ); assert_eq!(selected1, i32x4::from_array([0, 0, 0, 1])); assert_eq!(selected2, selected1); + // Non-zero "padding" (the extra bits) is also allowed. + let selected1 = simd_select_bitmask::( + if cfg!(target_endian = "little") { 0b11111000 } else { 0b11110001 }, + i32x4::splat(1), // yes + i32x4::splat(0), // no + ); + let selected2 = simd_select_bitmask::<[u8; 1], _>( + if cfg!(target_endian = "little") { [0b11111000] } else { [0b11110001] }, + i32x4::splat(1), // yes + i32x4::splat(0), // no + ); + assert_eq!(selected1, i32x4::from_array([0, 0, 0, 1])); + assert_eq!(selected2, selected1); } // Non-power-of-2 multi-byte mask. From 3a372e39ca54339925bf01ead93b3c1dc01078d2 Mon Sep 17 00:00:00 2001 From: xizheyin Date: Sun, 20 Apr 2025 14:32:33 +0800 Subject: [PATCH 22/90] std: mention `remove_dir_all` can emit `DirectoryNotEmpty` when concurrently written into Signed-off-by: xizheyin --- library/std/src/fs.rs | 2 ++ 1 file changed, 2 insertions(+) diff --git a/library/std/src/fs.rs b/library/std/src/fs.rs index 801baf3d99072..0e306d23dd936 100644 --- a/library/std/src/fs.rs +++ b/library/std/src/fs.rs @@ -2874,6 +2874,8 @@ pub fn remove_dir>(path: P) -> io::Result<()> { /// /// Consider ignoring the error if validating the removal is not required for your use case. /// +/// This function may return [`io::ErrorKind::DirectoryNotEmpty`] if the directory is concurrently +/// written into, which typically indicates some contents were removed but not all. /// [`io::ErrorKind::NotFound`] is only returned if no removal occurs. /// /// [`fs::remove_file`]: remove_file From ff428d91c2b690b8dbd8cc1e48274870c24fe1e2 Mon Sep 17 00:00:00 2001 From: Philipp Krones Date: Tue, 22 Apr 2025 16:10:59 +0200 Subject: [PATCH 23/90] Merge commit '0621446356e20fd2ead13a6763bb936c95eb0cfa' into clippy-subtree-update --- .github/workflows/clippy_changelog.yml | 2 +- .github/workflows/clippy_mq.yml | 2 +- .github/workflows/clippy_pr.yml | 2 +- .github/workflows/deploy.yml | 4 + .github/workflows/lintcheck.yml | 4 +- CHANGELOG.md | 70 ++++- Cargo.toml | 9 +- rinja.toml => askama.toml | 0 book/src/SUMMARY.md | 1 + book/src/development/adding_lints.md | 22 +- book/src/development/basics.md | 2 +- .../development/common_tools_writing_lints.md | 10 +- book/src/development/defining_lints.md | 3 +- .../infrastructure/benchmarking.md | 55 ++++ .../src/development/infrastructure/release.md | 3 - book/src/development/infrastructure/sync.md | 2 +- book/src/development/writing_tests.md | 38 ++- book/src/lint_configuration.md | 56 ++-- clippy.toml | 7 +- clippy_config/Cargo.toml | 2 +- clippy_config/src/conf.rs | 206 +++++++++--- clippy_config/src/lib.rs | 1 + clippy_config/src/types.rs | 114 ++++++- clippy_dev/src/lib.rs | 1 + clippy_dev/src/main.rs | 3 +- clippy_dev/src/setup/toolchain.rs | 2 +- clippy_dev/src/sync.rs | 2 +- clippy_dev/src/update_lints.rs | 171 ++++------ clippy_dev/src/utils.rs | 8 +- clippy_lints/Cargo.toml | 9 +- .../src/arbitrary_source_item_ordering.rs | 81 +++-- clippy_lints/src/as_conversions.rs | 22 +- clippy_lints/src/assigning_clones.rs | 6 +- .../attrs/blanket_clippy_restriction_lints.rs | 23 +- clippy_lints/src/attrs/deprecated_semver.rs | 8 +- .../src/attrs/duplicated_attributes.rs | 5 +- clippy_lints/src/attrs/mod.rs | 86 +++-- clippy_lints/src/attrs/repr_attributes.rs | 2 +- clippy_lints/src/attrs/useless_attribute.rs | 130 ++++---- clippy_lints/src/await_holding_invalid.rs | 16 +- clippy_lints/src/bool_to_int_with_if.rs | 29 +- clippy_lints/src/booleans.rs | 34 +- clippy_lints/src/borrow_deref_ref.rs | 13 +- clippy_lints/src/casts/borrow_as_ptr.rs | 33 +- .../src/casts/cast_abs_to_unsigned.rs | 2 +- clippy_lints/src/casts/cast_lossless.rs | 2 +- .../src/casts/cast_possible_truncation.rs | 10 +- clippy_lints/src/casts/cast_ptr_alignment.rs | 19 +- .../src/casts/cast_slice_different_sizes.rs | 65 ++-- clippy_lints/src/casts/manual_dangling_ptr.rs | 82 +++++ clippy_lints/src/casts/mod.rs | 37 ++- clippy_lints/src/casts/ptr_as_ptr.rs | 2 +- clippy_lints/src/casts/ptr_cast_constness.rs | 7 +- clippy_lints/src/casts/unnecessary_cast.rs | 10 +- clippy_lints/src/checked_conversions.rs | 8 +- clippy_lints/src/cognitive_complexity.rs | 8 +- clippy_lints/src/collapsible_if.rs | 221 ++++++++----- clippy_lints/src/comparison_chain.rs | 2 +- clippy_lints/src/copies.rs | 10 +- clippy_lints/src/declare_clippy_lint.rs | 13 - clippy_lints/src/declared_lints.rs | 39 +-- .../src/default_constructed_unit_structs.rs | 24 +- clippy_lints/src/deprecated_lints.rs | 2 + clippy_lints/src/dereference.rs | 105 ++++--- clippy_lints/src/derivable_impls.rs | 26 +- clippy_lints/src/derive.rs | 20 +- clippy_lints/src/disallowed_macros.rs | 10 +- clippy_lints/src/disallowed_methods.rs | 23 +- clippy_lints/src/disallowed_types.rs | 34 +- clippy_lints/src/doc/markdown.rs | 26 +- clippy_lints/src/doc/missing_headers.rs | 51 ++- clippy_lints/src/doc/mod.rs | 136 ++------ clippy_lints/src/doc/needless_doctest_main.rs | 5 +- clippy_lints/src/drop_forget_ref.rs | 8 +- clippy_lints/src/empty_line_after.rs | 23 +- clippy_lints/src/empty_with_brackets.rs | 233 ++++++++++---- clippy_lints/src/entry.rs | 33 +- clippy_lints/src/enum_clike.rs | 8 +- clippy_lints/src/escape.rs | 46 +-- clippy_lints/src/fallible_impl_from.rs | 8 +- clippy_lints/src/floating_point_arithmetic.rs | 170 +++++----- clippy_lints/src/format.rs | 2 +- clippy_lints/src/format_args.rs | 4 +- clippy_lints/src/format_impl.rs | 16 +- clippy_lints/src/formatting.rs | 41 +-- clippy_lints/src/from_str_radix_10.rs | 2 +- .../src/functions/misnamed_getters.rs | 17 +- .../src/functions/renamed_function_params.rs | 4 +- .../src/functions/too_many_arguments.rs | 18 +- clippy_lints/src/if_then_some_else_none.rs | 2 +- clippy_lints/src/implicit_return.rs | 30 +- clippy_lints/src/implicit_saturating_sub.rs | 2 +- clippy_lints/src/implied_bounds_in_impls.rs | 4 +- .../src/inconsistent_struct_constructor.rs | 6 +- clippy_lints/src/indexing_slicing.rs | 45 ++- clippy_lints/src/infinite_iter.rs | 11 +- clippy_lints/src/instant_subtraction.rs | 2 +- clippy_lints/src/int_plus_one.rs | 24 +- .../src/invalid_upcast_comparisons.rs | 84 ++--- clippy_lints/src/item_name_repetitions.rs | 116 ++++--- clippy_lints/src/len_zero.rs | 85 ++--- clippy_lints/src/lib.rs | 69 +--- clippy_lints/src/lifetimes.rs | 37 ++- clippy_lints/src/literal_representation.rs | 11 +- .../literal_string_with_formatting_args.rs | 9 +- .../src/loops/char_indices_as_byte_indices.rs | 141 +++++++++ clippy_lints/src/loops/explicit_iter_loop.rs | 16 +- clippy_lints/src/loops/for_kv_map.rs | 74 ++--- clippy_lints/src/loops/manual_find.rs | 2 + clippy_lints/src/loops/manual_memcpy.rs | 137 ++++---- .../src/loops/manual_while_let_some.rs | 16 +- clippy_lints/src/loops/mod.rs | 46 +++ clippy_lints/src/loops/mut_range_bound.rs | 16 +- clippy_lints/src/loops/needless_range_loop.rs | 269 ++++++++-------- clippy_lints/src/loops/never_loop.rs | 8 +- clippy_lints/src/loops/utils.rs | 10 +- clippy_lints/src/macro_metavars_in_unsafe.rs | 17 +- clippy_lints/src/manual_abs_diff.rs | 152 +++++++++ clippy_lints/src/manual_assert.rs | 2 +- clippy_lints/src/manual_clamp.rs | 2 +- clippy_lints/src/manual_div_ceil.rs | 11 +- clippy_lints/src/manual_is_ascii_check.rs | 2 +- clippy_lints/src/manual_is_power_of_two.rs | 192 ++++++------ clippy_lints/src/manual_option_as_slice.rs | 2 +- clippy_lints/src/manual_retain.rs | 35 +-- clippy_lints/src/manual_rotate.rs | 2 +- clippy_lints/src/manual_string_new.rs | 15 +- clippy_lints/src/manual_unwrap_or_default.rs | 212 ------------- clippy_lints/src/map_unit_fn.rs | 8 +- clippy_lints/src/matches/collapsible_match.rs | 4 +- clippy_lints/src/matches/manual_filter.rs | 20 +- clippy_lints/src/matches/manual_ok_err.rs | 4 +- clippy_lints/src/matches/manual_unwrap_or.rs | 294 +++++++++++------- .../src/matches/match_like_matches.rs | 25 +- .../src/matches/match_on_vec_items.rs | 50 --- .../src/matches/match_single_binding.rs | 59 ++-- .../src/matches/match_str_case_mismatch.rs | 8 +- clippy_lints/src/matches/match_wild_enum.rs | 18 +- .../src/matches/match_wild_err_arm.rs | 11 +- clippy_lints/src/matches/mod.rs | 51 ++- clippy_lints/src/matches/needless_match.rs | 8 +- clippy_lints/src/matches/overlapping_arms.rs | 22 +- .../src/matches/redundant_pattern_match.rs | 22 +- .../matches/significant_drop_in_scrutinee.rs | 9 +- clippy_lints/src/matches/single_match.rs | 17 +- clippy_lints/src/matches/wild_in_or_pats.rs | 22 +- clippy_lints/src/mem_replace.rs | 16 +- .../src/methods/bind_instead_of_map.rs | 8 +- ...se_sensitive_file_extension_comparisons.rs | 24 +- clippy_lints/src/methods/clone_on_copy.rs | 8 +- .../src/methods/double_ended_iterator_last.rs | 7 +- clippy_lints/src/methods/expect_fun_call.rs | 9 +- clippy_lints/src/methods/filter_map.rs | 31 +- .../src/methods/filter_map_bool_then.rs | 76 ++++- .../methods/from_iter_instead_of_collect.rs | 97 +++--- clippy_lints/src/methods/is_empty.rs | 16 +- .../src/methods/iter_cloned_collect.rs | 10 +- clippy_lints/src/methods/iter_filter.rs | 8 +- clippy_lints/src/methods/iter_kv_map.rs | 2 +- .../src/methods/iterator_step_by_zero.rs | 18 +- .../methods/manual_saturating_arithmetic.rs | 26 +- clippy_lints/src/methods/manual_str_repeat.rs | 2 +- clippy_lints/src/methods/map_clone.rs | 36 +-- .../map_with_unused_argument_over_ranges.rs | 2 +- clippy_lints/src/methods/mod.rs | 94 +++++- clippy_lints/src/methods/needless_collect.rs | 36 ++- .../src/methods/needless_option_take.rs | 49 +-- .../src/methods/obfuscated_if_else.rs | 18 +- clippy_lints/src/methods/or_fun_call.rs | 11 +- clippy_lints/src/methods/seek_from_current.rs | 44 ++- .../seek_to_start_instead_of_rewind.rs | 6 +- clippy_lints/src/methods/str_splitn.rs | 15 +- clippy_lints/src/methods/suspicious_map.rs | 8 +- .../src/methods/swap_with_temporary.rs | 125 ++++++++ .../src/methods/unnecessary_filter_map.rs | 26 +- .../src/methods/unnecessary_lazy_eval.rs | 99 +++--- .../src/methods/unnecessary_map_or.rs | 8 +- clippy_lints/src/methods/utils.rs | 3 + .../src/misc_early/builtin_type_shadow.rs | 18 +- .../src/misc_early/redundant_pattern.rs | 30 +- .../misc_early/unneeded_wildcard_pattern.rs | 46 +-- .../src/mismatching_type_param_order.rs | 8 +- .../src/missing_asserts_for_indexing.rs | 79 +++-- clippy_lints/src/missing_const_for_fn.rs | 15 +- clippy_lints/src/missing_fields_in_debug.rs | 9 +- clippy_lints/src/missing_inline.rs | 13 +- .../src/mixed_read_write_in_expression.rs | 46 +-- clippy_lints/src/module_style.rs | 32 +- .../src/multiple_unsafe_ops_per_block.rs | 5 +- clippy_lints/src/mut_key.rs | 8 +- clippy_lints/src/mut_mut.rs | 20 +- clippy_lints/src/mutable_debug_assertion.rs | 11 +- clippy_lints/src/mutex_atomic.rs | 24 +- clippy_lints/src/needless_bool.rs | 10 +- clippy_lints/src/needless_pass_by_ref_mut.rs | 65 ++-- clippy_lints/src/needless_pass_by_value.rs | 71 ++--- clippy_lints/src/needless_update.rs | 22 +- clippy_lints/src/neg_multiply.rs | 32 +- clippy_lints/src/new_without_default.rs | 8 +- clippy_lints/src/no_effect.rs | 31 +- clippy_lints/src/non_canonical_impls.rs | 112 ++++--- clippy_lints/src/non_copy_const.rs | 2 +- clippy_lints/src/non_std_lazy_statics.rs | 6 +- clippy_lints/src/non_zero_suggestions.rs | 7 +- clippy_lints/src/operators/cmp_owned.rs | 2 +- .../operators/float_equality_without_abs.rs | 2 +- clippy_lints/src/operators/identity_op.rs | 2 +- clippy_lints/src/operators/modulo_one.rs | 18 +- .../src/operators/numeric_arithmetic.rs | 16 +- clippy_lints/src/operators/op_ref.rs | 19 +- .../src/operators/verbose_bit_mask.rs | 2 +- clippy_lints/src/option_if_let_else.rs | 15 +- clippy_lints/src/partialeq_ne_impl.rs | 2 +- clippy_lints/src/partialeq_to_none.rs | 2 +- clippy_lints/src/pass_by_ref_or_value.rs | 32 +- clippy_lints/src/pathbuf_init_then_push.rs | 19 +- clippy_lints/src/pattern_type_mismatch.rs | 21 +- clippy_lints/src/ptr.rs | 75 +++-- clippy_lints/src/ptr_offset_with_cast.rs | 24 +- clippy_lints/src/question_mark.rs | 3 +- clippy_lints/src/ranges.rs | 40 +-- clippy_lints/src/rc_clone_in_vec_init.rs | 6 +- clippy_lints/src/redundant_async_block.rs | 26 +- clippy_lints/src/redundant_clone.rs | 69 ++-- clippy_lints/src/redundant_closure_call.rs | 2 +- clippy_lints/src/redundant_pub_crate.rs | 11 +- clippy_lints/src/redundant_slicing.rs | 33 +- clippy_lints/src/redundant_test_prefix.rs | 161 ++++++++++ clippy_lints/src/regex.rs | 8 +- clippy_lints/src/same_name_method.rs | 3 +- clippy_lints/src/serde_api.rs | 40 +-- clippy_lints/src/set_contains_or_insert.rs | 8 +- clippy_lints/src/shadow.rs | 25 +- .../src/significant_drop_tightening.rs | 32 +- .../src/single_char_lifetime_names.rs | 27 +- .../src/single_component_path_imports.rs | 22 +- clippy_lints/src/strings.rs | 16 +- clippy_lints/src/suspicious_trait_impl.rs | 44 ++- clippy_lints/src/swap.rs | 13 +- clippy_lints/src/trait_bounds.rs | 23 +- .../src/transmute/transmute_float_to_int.rs | 2 +- .../src/transmute/transmute_ptr_to_ptr.rs | 4 +- .../src/transmute/transmute_ptr_to_ref.rs | 4 +- clippy_lints/src/types/mod.rs | 40 +-- clippy_lints/src/unconditional_recursion.rs | 34 +- clippy_lints/src/unicode.rs | 8 +- clippy_lints/src/unnecessary_wraps.rs | 10 +- clippy_lints/src/unnested_or_patterns.rs | 21 +- clippy_lints/src/unused_io_amount.rs | 17 +- clippy_lints/src/unwrap.rs | 8 +- clippy_lints/src/useless_conversion.rs | 58 ++-- clippy_lints/src/utils/internal_lints.rs | 11 - .../interning_defined_symbol.rs | 241 -------------- .../internal_lints/slow_symbol_comparisons.rs | 74 ----- .../unsorted_clippy_utils_paths.rs | 49 --- clippy_lints/src/utils/mod.rs | 3 - clippy_lints/src/wildcard_imports.rs | 6 +- clippy_lints/src/zero_sized_map_values.rs | 8 +- clippy_lints/src/zombie_processes.rs | 2 +- clippy_lints_internal/Cargo.toml | 14 + .../src}/almost_standard_lint_formulation.rs | 12 +- .../src}/collapsible_calls.rs | 10 +- .../src/interning_literals.rs | 102 ++++++ .../src}/invalid_paths.rs | 40 +-- clippy_lints_internal/src/lib.rs | 74 +++++ .../src}/lint_without_lint_pass.rs | 51 ++- .../src}/msrv_attr_impl.rs | 11 +- .../src}/outer_expn_data_pass.rs | 10 +- .../src}/produce_ice.rs | 12 +- .../src}/unnecessary_def_path.rs | 18 +- .../src/unsorted_clippy_utils_paths.rs | 54 ++++ clippy_utils/Cargo.toml | 2 +- clippy_utils/README.md | 2 +- clippy_utils/src/ast_utils/mod.rs | 28 +- clippy_utils/src/consts.rs | 26 +- clippy_utils/src/diagnostics.rs | 20 +- clippy_utils/src/higher.rs | 17 +- clippy_utils/src/hir_utils.rs | 266 ++++++++-------- clippy_utils/src/lib.rs | 233 ++++++++------ clippy_utils/src/mir/mod.rs | 2 +- clippy_utils/src/msrvs.rs | 13 +- clippy_utils/src/paths.rs | 2 + clippy_utils/src/source.rs | 43 ++- clippy_utils/src/str_utils.rs | 4 +- clippy_utils/src/sugg.rs | 17 +- clippy_utils/src/sym.rs | 54 +++- clippy_utils/src/sym_helper.rs | 7 - clippy_utils/src/ty/mod.rs | 78 ++++- clippy_utils/src/usage.rs | 8 +- clippy_utils/src/visitors.rs | 8 +- lintcheck/ci-config/clippy.toml | 7 + lintcheck/src/main.rs | 41 ++- lintcheck/src/recursive.rs | 2 +- rust-toolchain => rust-toolchain.toml | 2 +- rustc_tools_util/src/lib.rs | 2 +- src/driver.rs | 32 +- tests/clippy.toml | 1 + tests/compile-test.rs | 26 +- tests/dogfood.rs | 7 +- tests/ui-internal/auxiliary/paths.rs | 2 + .../check_clippy_version_attribute.rs | 13 +- .../check_clippy_version_attribute.stderr | 13 +- tests/ui-internal/check_formulation.rs | 3 +- tests/ui-internal/check_formulation.stderr | 11 +- .../collapsible_span_lint_calls.fixed | 2 +- .../collapsible_span_lint_calls.rs | 2 +- .../collapsible_span_lint_calls.stderr | 5 +- tests/ui-internal/custom_ice_message.rs | 2 +- tests/ui-internal/custom_ice_message.stderr | 2 +- tests/ui-internal/default_lint.rs | 2 +- tests/ui-internal/default_lint.stderr | 5 +- tests/ui-internal/disallow_span_lint.rs | 1 + tests/ui-internal/disallow_span_lint.stderr | 11 +- .../interning_defined_symbol.fixed | 40 --- tests/ui-internal/interning_defined_symbol.rs | 40 --- .../interning_defined_symbol.stderr | 33 -- tests/ui-internal/interning_literals.fixed | 31 ++ tests/ui-internal/interning_literals.rs | 31 ++ tests/ui-internal/interning_literals.stderr | 64 ++++ .../interning_literals_unfixable.rs | 16 + .../interning_literals_unfixable.stderr | 40 +++ .../ui-internal/invalid_msrv_attr_impl.fixed | 2 +- tests/ui-internal/invalid_msrv_attr_impl.rs | 2 +- .../ui-internal/invalid_msrv_attr_impl.stderr | 5 +- tests/ui-internal/invalid_paths.rs | 2 +- tests/ui-internal/invalid_paths.stderr | 7 +- tests/ui-internal/lint_without_lint_pass.rs | 2 +- .../ui-internal/lint_without_lint_pass.stderr | 5 +- tests/ui-internal/outer_expn_data.fixed | 2 +- tests/ui-internal/outer_expn_data.rs | 2 +- tests/ui-internal/outer_expn_data.stderr | 5 +- .../ui-internal/slow_symbol_comparisons.fixed | 24 -- tests/ui-internal/slow_symbol_comparisons.rs | 24 -- .../slow_symbol_comparisons.stderr | 23 -- tests/ui-internal/unnecessary_def_path.fixed | 2 +- tests/ui-internal/unnecessary_def_path.rs | 2 +- tests/ui-internal/unnecessary_def_path.stderr | 5 +- .../unnecessary_def_path_hardcoded_path.rs | 2 +- ...unnecessary_def_path_hardcoded_path.stderr | 7 +- .../ui-internal/unnecessary_symbol_str.fixed | 26 -- tests/ui-internal/unnecessary_symbol_str.rs | 26 -- .../ui-internal/unnecessary_symbol_str.stderr | 39 --- .../ordering_good.rs | 1 + .../selective_ordering.default.stderr | 6 +- .../selective_ordering.ord_in_2.stderr | 12 +- .../selective_ordering.ord_in_3.stderr | 6 +- .../selective_ordering.ord_within.stderr | 30 +- .../selective_ordering.rs | 8 + .../await_holding_invalid_type.stderr | 9 +- tests/ui-toml/collapsible_if/clippy.toml | 1 + .../collapsible_if/collapsible_if.fixed | 34 ++ .../ui-toml/collapsible_if/collapsible_if.rs | 38 +++ .../collapsible_if/collapsible_if.stderr | 80 +++++ .../collapsible_if_let_chains.fixed | 25 ++ .../collapsible_if_let_chains.rs | 28 ++ .../collapsible_if_let_chains.stderr | 64 ++++ .../macro_metavars_in_unsafe/default/test.rs | 16 + .../index_refutable_slice.fixed | 1 + .../index_refutable_slice.rs | 1 + .../index_refutable_slice.stderr | 4 +- .../strict_non_send_fields_in_send_ty/test.rs | 2 +- .../clippy.toml | 2 +- tests/ui-toml/toml_invalid_path/clippy.toml | 14 + .../toml_invalid_path/conf_invalid_path.rs | 5 + .../conf_invalid_path.stderr | 23 ++ .../toml_unknown_key/conf_unknown_key.stderr | 15 +- .../wildcard_imports/wildcard_imports.fixed | 2 +- .../wildcard_imports/wildcard_imports.rs | 2 +- .../wildcard_imports/wildcard_imports.stderr | 6 +- tests/ui/asm_syntax_not_x86.rs | 8 +- tests/ui/asm_syntax_x86.rs | 36 ++- tests/ui/asm_syntax_x86.stderr | 36 +-- tests/ui/author/if.rs | 2 +- tests/ui/author/macro_in_closure.rs | 2 + tests/ui/author/macro_in_loop.rs | 1 + tests/ui/auxiliary/proc_macros.rs | 12 +- tests/ui/blocks_in_conditions.fixed | 29 +- tests/ui/blocks_in_conditions.rs | 29 +- tests/ui/blocks_in_conditions.stderr | 27 +- tests/ui/blocks_in_conditions_2021.fixed | 25 ++ tests/ui/blocks_in_conditions_2021.rs | 25 ++ tests/ui/blocks_in_conditions_2021.stderr | 23 ++ tests/ui/bool_to_int_with_if.fixed | 24 ++ tests/ui/bool_to_int_with_if.rs | 24 ++ tests/ui/bool_to_int_with_if.stderr | 18 +- tests/ui/borrow_as_ptr.fixed | 18 ++ tests/ui/borrow_as_ptr.rs | 18 ++ tests/ui/borrow_as_ptr.stderr | 35 ++- tests/ui/borrow_deref_ref.fixed | 43 +++ tests/ui/borrow_deref_ref.rs | 43 +++ tests/ui/borrow_deref_ref.stderr | 8 +- tests/ui/box_collection.rs | 1 - tests/ui/box_collection.stderr | 18 +- ...sensitive_file_extension_comparisons.fixed | 21 +- ...se_sensitive_file_extension_comparisons.rs | 7 +- ...ensitive_file_extension_comparisons.stderr | 40 ++- tests/ui/char_indices_as_byte_indices.fixed | 65 ++++ tests/ui/char_indices_as_byte_indices.rs | 65 ++++ tests/ui/char_indices_as_byte_indices.stderr | 130 ++++++++ .../checked_unwrap/simple_conditionals.stderr | 3 +- tests/ui/cmp_owned/with_suggestion.fixed | 9 + tests/ui/cmp_owned/with_suggestion.rs | 9 + tests/ui/cmp_owned/with_suggestion.stderr | 14 +- tests/ui/cognitive_complexity.rs | 28 +- tests/ui/cognitive_complexity.stderr | 58 ++-- tests/ui/collapsible_if.fixed | 112 ++++--- tests/ui/collapsible_if.rs | 62 ++-- tests/ui/collapsible_if.stderr | 109 +++++-- tests/ui/collapsible_if_let_chains.fixed | 29 ++ tests/ui/collapsible_if_let_chains.rs | 32 ++ tests/ui/collapsible_if_let_chains.stderr | 58 ++++ tests/ui/collapsible_match.rs | 12 + tests/ui/crashes/enum-glob-import-crate.rs | 3 - tests/ui/crashes/ice-11230.fixed | 4 +- tests/ui/crashes/ice-11230.rs | 2 +- tests/ui/crashes/ice-11230.stderr | 11 +- tests/ui/crashes/ice-13544-original.rs | 45 +++ tests/ui/crashes/ice-13544-reduced.rs | 16 + tests/ui/crashes/ice-1588.rs | 2 +- tests/ui/crashes/ice-1969.rs | 2 - tests/ui/crashes/ice-3462.rs | 4 +- tests/ui/crashes/ice-700.rs | 2 - tests/ui/crashes/ice-7012.rs | 2 +- tests/ui/crashes/ice-7423.rs | 2 +- tests/ui/crashes/ice_exact_size.rs | 3 - tests/ui/crashes/needless_borrow_fp.rs | 1 - tests/ui/crate_level_checks/no_std_swap.fixed | 1 - tests/ui/crate_level_checks/no_std_swap.rs | 1 - .../ui/crate_level_checks/no_std_swap.stderr | 5 +- tests/ui/dbg_macro/dbg_macro.fixed | 7 +- tests/ui/dbg_macro/dbg_macro.rs | 7 +- tests/ui/dbg_macro/dbg_macro.stderr | 38 +-- tests/ui/def_id_nocore.rs | 2 +- .../ui/default_constructed_unit_structs.fixed | 14 + tests/ui/default_constructed_unit_structs.rs | 14 + .../default_constructed_unit_structs.stderr | 50 ++- tests/ui/deprecated.rs | 1 + tests/ui/deprecated.stderr | 8 +- tests/ui/derive.rs | 17 + tests/ui/derive.stderr | 20 +- tests/ui/doc/doc-fixable.fixed | 3 +- tests/ui/doc/doc-fixable.rs | 3 +- tests/ui/doc/doc-fixable.stderr | 68 ++-- tests/ui/doc_unsafe.rs | 2 +- tests/ui/double_ended_iterator_last.fixed | 32 +- tests/ui/double_ended_iterator_last.rs | 28 +- tests/ui/double_ended_iterator_last.stderr | 52 +--- .../double_ended_iterator_last_unfixable.rs | 5 +- ...ouble_ended_iterator_last_unfixable.stderr | 24 +- tests/ui/eager_transmute.fixed | 6 +- tests/ui/eager_transmute.rs | 6 +- tests/ui/eager_transmute.stderr | 16 +- tests/ui/empty_docs.rs | 2 +- .../empty_enum_variants_with_brackets.fixed | 78 ++++- tests/ui/empty_enum_variants_with_brackets.rs | 78 ++++- .../empty_enum_variants_with_brackets.stderr | 62 +++- .../ui/empty_line_after/doc_comments.1.fixed | 5 + .../ui/empty_line_after/doc_comments.2.fixed | 6 + tests/ui/empty_line_after/doc_comments.rs | 6 + tests/ui/empty_line_after/doc_comments.stderr | 28 +- tests/ui/entry.fixed | 22 ++ tests/ui/entry.rs | 22 ++ tests/ui/explicit_auto_deref.fixed | 2 +- tests/ui/explicit_auto_deref.rs | 2 +- tests/ui/filter_map_bool_then_unfixable.rs | 63 ++++ .../ui/filter_map_bool_then_unfixable.stderr | 65 ++++ tests/ui/filter_map_next.rs | 2 +- tests/ui/filter_map_next_fixable.fixed | 3 +- tests/ui/filter_map_next_fixable.rs | 3 +- tests/ui/filter_map_next_fixable.stderr | 4 +- tests/ui/find_map.rs | 1 - tests/ui/fn_params_excessive_bools.rs | 10 +- tests/ui/formatting.rs | 3 - tests/ui/formatting.stderr | 15 +- tests/ui/from_iter_instead_of_collect.fixed | 43 +++ tests/ui/from_iter_instead_of_collect.rs | 43 +++ tests/ui/from_iter_instead_of_collect.stderr | 56 +++- tests/ui/functions.rs | 2 - tests/ui/functions.stderr | 35 +-- tests/ui/if_not_else.fixed | 1 - tests/ui/if_not_else.rs | 1 - tests/ui/if_not_else.stderr | 12 +- tests/ui/ignore_without_reason.rs | 14 + tests/ui/ignore_without_reason.stderr | 12 + tests/ui/implicit_return.fixed | 43 +++ tests/ui/implicit_return.rs | 43 +++ tests/ui/implicit_return.stderr | 90 +++++- .../items_after_test_module/root_module.fixed | 1 - .../ui/items_after_test_module/root_module.rs | 1 - .../root_module.stderr | 2 +- tests/ui/iter_cloned_collect.fixed | 27 ++ tests/ui/iter_cloned_collect.rs | 27 ++ tests/ui/iter_cloned_collect.stderr | 8 +- tests/ui/iter_kv_map.fixed | 15 + tests/ui/iter_kv_map.rs | 15 + tests/ui/iter_kv_map.stderr | 8 +- tests/ui/iter_overeager_cloned.fixed | 2 +- tests/ui/iter_overeager_cloned.rs | 2 +- tests/ui/iter_overeager_cloned.stderr | 6 +- tests/ui/large_futures.fixed | 9 +- tests/ui/large_futures.rs | 9 +- tests/ui/large_futures.stderr | 16 +- tests/ui/len_without_is_empty_expect.rs | 28 ++ tests/ui/len_without_is_empty_expect.stderr | 11 + tests/ui/manual_abs_diff.fixed | 106 +++++++ tests/ui/manual_abs_diff.rs | 116 +++++++ tests/ui/manual_abs_diff.stderr | 83 +++++ tests/ui/manual_async_fn.fixed | 6 +- tests/ui/manual_async_fn.rs | 6 +- tests/ui/manual_dangling_ptr.fixed | 44 +++ tests/ui/manual_dangling_ptr.rs | 44 +++ tests/ui/manual_dangling_ptr.stderr | 65 ++++ tests/ui/manual_find.rs | 28 ++ tests/ui/manual_ignore_case_cmp.fixed | 10 +- tests/ui/manual_ignore_case_cmp.rs | 10 +- tests/ui/manual_ignore_case_cmp.stderr | 105 +++---- tests/ui/manual_inspect.fixed | 13 +- tests/ui/manual_inspect.rs | 11 +- tests/ui/manual_inspect.stderr | 17 +- tests/ui/manual_is_power_of_two.fixed | 34 ++ tests/ui/manual_is_power_of_two.rs | 34 ++ tests/ui/manual_is_power_of_two.stderr | 32 +- tests/ui/manual_map_option.rs | 2 +- tests/ui/manual_map_option.stderr | 2 +- tests/ui/manual_map_option_2.fixed | 6 +- tests/ui/manual_map_option_2.rs | 6 +- tests/ui/manual_ok_err.fixed | 5 + tests/ui/manual_ok_err.rs | 5 + tests/ui/manual_ok_err.stderr | 2 +- tests/ui/manual_retain.fixed | 10 +- tests/ui/manual_retain.rs | 10 +- tests/ui/manual_retain.stderr | 16 +- tests/ui/manual_strip_fixable.fixed | 1 + tests/ui/manual_strip_fixable.rs | 1 + tests/ui/manual_strip_fixable.stderr | 8 +- tests/ui/manual_unwrap_or.fixed | 30 +- tests/ui/manual_unwrap_or.rs | 15 +- tests/ui/manual_unwrap_or.stderr | 39 ++- tests/ui/manual_unwrap_or_default.fixed | 17 +- tests/ui/manual_unwrap_or_default.rs | 28 +- tests/ui/manual_unwrap_or_default.stderr | 27 +- tests/ui/map_flatten_fixable.fixed | 13 +- tests/ui/map_flatten_fixable.rs | 13 +- tests/ui/map_flatten_fixable.stderr | 18 +- tests/ui/match_on_vec_items.rs | 161 ---------- tests/ui/match_on_vec_items.stderr | 53 ---- tests/ui/match_single_binding.fixed | 17 + tests/ui/match_single_binding.rs | 20 ++ tests/ui/match_single_binding.stderr | 44 ++- tests/ui/methods.rs | 4 +- tests/ui/methods.stderr | 4 +- tests/ui/min_max.rs | 1 - tests/ui/min_max.stderr | 29 +- tests/ui/misnamed_getters.fixed | 24 +- tests/ui/misnamed_getters.rs | 24 +- tests/ui/misnamed_getters.stderr | 32 +- tests/ui/misnamed_getters_2021.fixed | 24 ++ tests/ui/misnamed_getters_2021.rs | 24 ++ tests/ui/misnamed_getters_2021.stderr | 16 + tests/ui/missing_asserts_for_indexing.fixed | 27 ++ tests/ui/missing_asserts_for_indexing.rs | 27 ++ tests/ui/missing_asserts_for_indexing.stderr | 54 +++- .../missing_asserts_for_indexing_unfixable.rs | 13 + ...sing_asserts_for_indexing_unfixable.stderr | 45 ++- .../missing_const_for_fn/could_be_const.fixed | 4 +- .../ui/missing_const_for_fn/could_be_const.rs | 4 +- .../could_be_const.stderr | 6 +- tests/ui/missing_panics_doc.rs | 39 +++ tests/ui/missing_panics_doc.stderr | 62 +++- tests/ui/missing_transmute_annotations.fixed | 50 +-- tests/ui/missing_transmute_annotations.rs | 50 +-- tests/ui/missing_transmute_annotations.stderr | 56 ++-- tests/ui/must_use_candidates.fixed | 8 +- tests/ui/must_use_candidates.rs | 8 +- tests/ui/mut_from_ref.rs | 34 +- tests/ui/mut_from_ref.stderr | 50 ++- tests/ui/mutex_atomic.rs | 1 - tests/ui/mutex_atomic.stderr | 22 +- tests/ui/needless_borrowed_ref.fixed | 2 +- tests/ui/needless_borrowed_ref.rs | 2 +- tests/ui/needless_collect.fixed | 84 +++++ tests/ui/needless_collect.rs | 84 +++++ tests/ui/needless_lifetimes.fixed | 7 + tests/ui/needless_lifetimes.rs | 7 + tests/ui/needless_pass_by_ref_mut.rs | 5 +- tests/ui/needless_pass_by_ref_mut.stderr | 68 ++-- tests/ui/needless_pass_by_ref_mut_2021.rs | 12 + tests/ui/neg_multiply.fixed | 29 ++ tests/ui/neg_multiply.rs | 29 ++ tests/ui/neg_multiply.stderr | 50 ++- tests/ui/no_mangle_with_rust_abi.rs | 2 +- tests/ui/non_canonical_partial_ord_impl.fixed | 33 ++ tests/ui/non_canonical_partial_ord_impl.rs | 35 +++ .../ui/non_canonical_partial_ord_impl.stderr | 15 +- tests/ui/non_expressive_names.rs | 3 +- tests/ui/non_expressive_names.stderr | 12 +- tests/ui/non_send_fields_in_send_ty.rs | 4 +- .../non_std_lazy_static_fixable.fixed | 14 +- .../non_std_lazy_static_fixable.rs | 14 +- .../non_std_lazy_static_fixable.stderr | 14 +- .../non_std_lazy_static_unfixable.rs | 12 +- .../non_std_lazy_static_unfixable.stderr | 12 +- tests/ui/nonminimal_bool.rs | 20 ++ tests/ui/nonminimal_bool.stderr | 10 +- tests/ui/obfuscated_if_else.fixed | 12 + tests/ui/obfuscated_if_else.rs | 12 + tests/ui/obfuscated_if_else.stderr | 42 ++- tests/ui/op_ref.fixed | 12 + tests/ui/op_ref.rs | 12 + tests/ui/option_if_let_else.fixed | 14 + tests/ui/option_if_let_else.rs | 14 + tests/ui/or_fun_call.fixed | 18 +- tests/ui/or_fun_call.rs | 18 +- tests/ui/or_fun_call.stderr | 40 +-- tests/ui/pattern_type_mismatch/mutability.rs | 2 +- .../pattern_alternatives.rs | 1 - .../pattern_alternatives.stderr | 6 +- .../pattern_type_mismatch/pattern_structs.rs | 1 - .../pattern_structs.stderr | 16 +- .../pattern_type_mismatch/pattern_tuples.rs | 1 - .../pattern_tuples.stderr | 20 +- tests/ui/pattern_type_mismatch/syntax.rs | 7 +- tests/ui/pattern_type_mismatch/syntax.stderr | 18 +- tests/ui/patterns.fixed | 2 - tests/ui/patterns.rs | 2 - tests/ui/patterns.stderr | 6 +- tests/ui/pointers_in_nomem_asm_block.rs | 38 ++- tests/ui/pointers_in_nomem_asm_block.stderr | 22 +- tests/ui/ptr_cast_constness.fixed | 18 +- tests/ui/ptr_cast_constness.rs | 18 +- tests/ui/ptr_cast_constness.stderr | 42 +-- tests/ui/ptr_eq.fixed | 7 + tests/ui/ptr_eq.rs | 7 + tests/ui/ptr_eq.stderr | 26 +- tests/ui/question_mark.fixed | 8 + tests/ui/question_mark.rs | 10 + tests/ui/question_mark.stderr | 68 ++-- tests/ui/redundant_allocation.rs | 1 - tests/ui/redundant_allocation.stderr | 40 +-- tests/ui/redundant_allocation_fixable.fixed | 4 +- tests/ui/redundant_allocation_fixable.rs | 4 +- tests/ui/redundant_allocation_fixable.stderr | 24 +- tests/ui/redundant_clone.fixed | 32 ++ tests/ui/redundant_clone.rs | 32 ++ .../redundant_pattern_matching_ipaddr.fixed | 3 +- tests/ui/redundant_pattern_matching_ipaddr.rs | 3 +- .../redundant_pattern_matching_ipaddr.stderr | 40 +-- .../redundant_pattern_matching_option.fixed | 4 +- tests/ui/redundant_pattern_matching_option.rs | 4 +- .../redundant_pattern_matching_option.stderr | 62 ++-- .../ui/redundant_pattern_matching_poll.fixed | 2 - tests/ui/redundant_pattern_matching_poll.rs | 2 - .../ui/redundant_pattern_matching_poll.stderr | 40 +-- .../redundant_pattern_matching_result.fixed | 3 +- tests/ui/redundant_pattern_matching_result.rs | 3 +- .../redundant_pattern_matching_result.stderr | 56 ++-- tests/ui/redundant_pub_crate.fixed | 8 + tests/ui/redundant_pub_crate.rs | 8 + tests/ui/redundant_pub_crate.stderr | 18 +- tests/ui/redundant_test_prefix.fixed | 158 ++++++++++ tests/ui/redundant_test_prefix.rs | 158 ++++++++++ tests/ui/redundant_test_prefix.stderr | 119 +++++++ tests/ui/redundant_test_prefix_noautofix.rs | 288 +++++++++++++++++ .../ui/redundant_test_prefix_noautofix.stderr | 241 ++++++++++++++ .../ref_option/ref_option_traits.all.stderr | 8 +- .../ref_option_traits.private.stderr | 4 +- tests/ui/ref_option/ref_option_traits.rs | 1 - tests/ui/rename.fixed | 15 +- tests/ui/rename.rs | 15 +- tests/ui/rename.stderr | 152 ++++----- tests/ui/repr_packed_without_abi.stderr | 4 +- tests/ui/result_unit_error_no_std.rs | 2 +- tests/ui/search_is_some_fixable_none.fixed | 7 +- tests/ui/search_is_some_fixable_none.rs | 9 +- tests/ui/search_is_some_fixable_none.stderr | 56 ++-- .../ui/search_is_some_fixable_none_2021.fixed | 14 + tests/ui/search_is_some_fixable_none_2021.rs | 16 + .../search_is_some_fixable_none_2021.stderr | 35 +++ tests/ui/search_is_some_fixable_some.fixed | 7 +- tests/ui/search_is_some_fixable_some.rs | 9 +- tests/ui/search_is_some_fixable_some.stderr | 35 +-- .../ui/search_is_some_fixable_some_2021.fixed | 11 + tests/ui/search_is_some_fixable_some_2021.rs | 11 + .../search_is_some_fixable_some_2021.stderr | 17 + tests/ui/shadow.rs | 15 + tests/ui/should_impl_trait/corner_cases.rs | 1 - tests/ui/should_impl_trait/method_list_1.rs | 1 - .../ui/should_impl_trait/method_list_1.stderr | 30 +- tests/ui/should_impl_trait/method_list_2.rs | 1 - .../ui/should_impl_trait/method_list_2.stderr | 30 +- tests/ui/single_call_fn.rs | 2 +- tests/ui/single_match.fixed | 36 +++ tests/ui/single_match.rs | 42 +++ tests/ui/single_match.stderr | 20 +- tests/ui/suspicious_doc_comments.fixed | 4 + tests/ui/suspicious_doc_comments.rs | 4 + tests/ui/swap.fixed | 5 - tests/ui/swap.rs | 5 - tests/ui/swap.stderr | 37 ++- tests/ui/swap_with_temporary.fixed | 74 +++++ tests/ui/swap_with_temporary.rs | 74 +++++ tests/ui/swap_with_temporary.stderr | 100 ++++++ tests/ui/swap_with_temporary_unfixable.rs | 62 ++++ tests/ui/swap_with_temporary_unfixable.stderr | 125 ++++++++ tests/ui/transmute.rs | 30 +- tests/ui/transmute.stderr | 120 +++---- tests/ui/transmute_null_to_fn.rs | 1 + tests/ui/transmute_null_to_fn.stderr | 12 +- tests/ui/transmute_ptr_to_ptr.fixed | 4 +- tests/ui/transmute_ptr_to_ptr.rs | 4 +- tests/ui/transmute_ptr_to_ref.fixed | 104 ++++--- tests/ui/transmute_ptr_to_ref.rs | 104 ++++--- tests/ui/transmute_ptr_to_ref.stderr | 120 +++---- tests/ui/transmuting_null.rs | 1 + tests/ui/transmuting_null.stderr | 6 +- tests/ui/type_complexity.rs | 3 +- tests/ui/type_complexity.stderr | 30 +- tests/ui/uninit_vec.rs | 12 +- tests/ui/uninit_vec.stderr | 49 +-- tests/ui/unnecessary_cast_unfixable.rs | 6 +- tests/ui/unnecessary_cast_unfixable.stderr | 6 +- tests/ui/unnecessary_filter_map.rs | 7 +- tests/ui/unnecessary_filter_map.stderr | 53 ++-- tests/ui/unnecessary_find_map.rs | 1 - tests/ui/unnecessary_find_map.stderr | 30 +- tests/ui/unnecessary_iter_cloned.fixed | 2 +- tests/ui/unnecessary_iter_cloned.rs | 2 +- tests/ui/unnecessary_lazy_eval.fixed | 4 + tests/ui/unnecessary_lazy_eval.rs | 4 + tests/ui/unnecessary_operation.fixed | 7 +- tests/ui/unnecessary_operation.rs | 7 +- tests/ui/unnecessary_operation.stderr | 40 +-- .../ui/unnecessary_os_str_debug_formatting.rs | 1 + ...unnecessary_os_str_debug_formatting.stderr | 12 +- tests/ui/unnecessary_path_debug_formatting.rs | 1 + .../unnecessary_path_debug_formatting.stderr | 18 +- tests/ui/unnecessary_to_owned.fixed | 7 +- tests/ui/unnecessary_to_owned.rs | 7 +- tests/ui/unnecessary_to_owned.stderr | 174 +++++------ tests/ui/unnested_or_patterns.fixed | 13 + tests/ui/unnested_or_patterns.rs | 13 + tests/ui/unnested_or_patterns.stderr | 38 ++- tests/ui/unwrap_or.fixed | 2 +- tests/ui/unwrap_or.rs | 2 +- tests/ui/used_underscore_items.rs | 2 +- triagebot.toml | 24 ++ 746 files changed, 13717 insertions(+), 6980 deletions(-) rename rinja.toml => askama.toml (100%) create mode 100644 book/src/development/infrastructure/benchmarking.md create mode 100644 clippy_lints/src/casts/manual_dangling_ptr.rs create mode 100644 clippy_lints/src/loops/char_indices_as_byte_indices.rs create mode 100644 clippy_lints/src/manual_abs_diff.rs delete mode 100644 clippy_lints/src/manual_unwrap_or_default.rs delete mode 100644 clippy_lints/src/matches/match_on_vec_items.rs create mode 100644 clippy_lints/src/methods/swap_with_temporary.rs create mode 100644 clippy_lints/src/redundant_test_prefix.rs delete mode 100644 clippy_lints/src/utils/internal_lints.rs delete mode 100644 clippy_lints/src/utils/internal_lints/interning_defined_symbol.rs delete mode 100644 clippy_lints/src/utils/internal_lints/slow_symbol_comparisons.rs delete mode 100644 clippy_lints/src/utils/internal_lints/unsorted_clippy_utils_paths.rs create mode 100644 clippy_lints_internal/Cargo.toml rename {clippy_lints/src/utils/internal_lints => clippy_lints_internal/src}/almost_standard_lint_formulation.rs (92%) rename {clippy_lints/src/utils/internal_lints => clippy_lints_internal/src}/collapsible_calls.rs (97%) create mode 100644 clippy_lints_internal/src/interning_literals.rs rename {clippy_lints/src/utils/internal_lints => clippy_lints_internal/src}/invalid_paths.rs (79%) create mode 100644 clippy_lints_internal/src/lib.rs rename {clippy_lints/src/utils/internal_lints => clippy_lints_internal/src}/lint_without_lint_pass.rs (90%) rename {clippy_lints/src/utils/internal_lints => clippy_lints_internal/src}/msrv_attr_impl.rs (93%) rename {clippy_lints/src/utils/internal_lints => clippy_lints_internal/src}/outer_expn_data_pass.rs (92%) rename {clippy_lints/src/utils/internal_lints => clippy_lints_internal/src}/produce_ice.rs (79%) rename {clippy_lints/src/utils/internal_lints => clippy_lints_internal/src}/unnecessary_def_path.rs (97%) create mode 100644 clippy_lints_internal/src/unsorted_clippy_utils_paths.rs delete mode 100644 clippy_utils/src/sym_helper.rs create mode 100644 lintcheck/ci-config/clippy.toml rename rust-toolchain => rust-toolchain.toml (85%) delete mode 100644 tests/ui-internal/interning_defined_symbol.fixed delete mode 100644 tests/ui-internal/interning_defined_symbol.rs delete mode 100644 tests/ui-internal/interning_defined_symbol.stderr create mode 100644 tests/ui-internal/interning_literals.fixed create mode 100644 tests/ui-internal/interning_literals.rs create mode 100644 tests/ui-internal/interning_literals.stderr create mode 100644 tests/ui-internal/interning_literals_unfixable.rs create mode 100644 tests/ui-internal/interning_literals_unfixable.stderr delete mode 100644 tests/ui-internal/slow_symbol_comparisons.fixed delete mode 100644 tests/ui-internal/slow_symbol_comparisons.rs delete mode 100644 tests/ui-internal/slow_symbol_comparisons.stderr delete mode 100644 tests/ui-internal/unnecessary_symbol_str.fixed delete mode 100644 tests/ui-internal/unnecessary_symbol_str.rs delete mode 100644 tests/ui-internal/unnecessary_symbol_str.stderr create mode 100644 tests/ui-toml/collapsible_if/clippy.toml create mode 100644 tests/ui-toml/collapsible_if/collapsible_if.fixed create mode 100644 tests/ui-toml/collapsible_if/collapsible_if.rs create mode 100644 tests/ui-toml/collapsible_if/collapsible_if.stderr create mode 100644 tests/ui-toml/collapsible_if/collapsible_if_let_chains.fixed create mode 100644 tests/ui-toml/collapsible_if/collapsible_if_let_chains.rs create mode 100644 tests/ui-toml/collapsible_if/collapsible_if_let_chains.stderr create mode 100644 tests/ui-toml/toml_invalid_path/clippy.toml create mode 100644 tests/ui-toml/toml_invalid_path/conf_invalid_path.rs create mode 100644 tests/ui-toml/toml_invalid_path/conf_invalid_path.stderr create mode 100644 tests/ui/blocks_in_conditions_2021.fixed create mode 100644 tests/ui/blocks_in_conditions_2021.rs create mode 100644 tests/ui/blocks_in_conditions_2021.stderr create mode 100644 tests/ui/char_indices_as_byte_indices.fixed create mode 100644 tests/ui/char_indices_as_byte_indices.rs create mode 100644 tests/ui/char_indices_as_byte_indices.stderr create mode 100644 tests/ui/collapsible_if_let_chains.fixed create mode 100644 tests/ui/collapsible_if_let_chains.rs create mode 100644 tests/ui/collapsible_if_let_chains.stderr create mode 100644 tests/ui/crashes/ice-13544-original.rs create mode 100644 tests/ui/crashes/ice-13544-reduced.rs create mode 100644 tests/ui/filter_map_bool_then_unfixable.rs create mode 100644 tests/ui/filter_map_bool_then_unfixable.stderr create mode 100644 tests/ui/ignore_without_reason.rs create mode 100644 tests/ui/ignore_without_reason.stderr create mode 100644 tests/ui/len_without_is_empty_expect.rs create mode 100644 tests/ui/len_without_is_empty_expect.stderr create mode 100644 tests/ui/manual_abs_diff.fixed create mode 100644 tests/ui/manual_abs_diff.rs create mode 100644 tests/ui/manual_abs_diff.stderr create mode 100644 tests/ui/manual_dangling_ptr.fixed create mode 100644 tests/ui/manual_dangling_ptr.rs create mode 100644 tests/ui/manual_dangling_ptr.stderr delete mode 100644 tests/ui/match_on_vec_items.rs delete mode 100644 tests/ui/match_on_vec_items.stderr create mode 100644 tests/ui/misnamed_getters_2021.fixed create mode 100644 tests/ui/misnamed_getters_2021.rs create mode 100644 tests/ui/misnamed_getters_2021.stderr create mode 100644 tests/ui/needless_pass_by_ref_mut_2021.rs create mode 100644 tests/ui/redundant_test_prefix.fixed create mode 100644 tests/ui/redundant_test_prefix.rs create mode 100644 tests/ui/redundant_test_prefix.stderr create mode 100644 tests/ui/redundant_test_prefix_noautofix.rs create mode 100644 tests/ui/redundant_test_prefix_noautofix.stderr create mode 100644 tests/ui/search_is_some_fixable_none_2021.fixed create mode 100644 tests/ui/search_is_some_fixable_none_2021.rs create mode 100644 tests/ui/search_is_some_fixable_none_2021.stderr create mode 100644 tests/ui/search_is_some_fixable_some_2021.fixed create mode 100644 tests/ui/search_is_some_fixable_some_2021.rs create mode 100644 tests/ui/search_is_some_fixable_some_2021.stderr create mode 100644 tests/ui/swap_with_temporary.fixed create mode 100644 tests/ui/swap_with_temporary.rs create mode 100644 tests/ui/swap_with_temporary.stderr create mode 100644 tests/ui/swap_with_temporary_unfixable.rs create mode 100644 tests/ui/swap_with_temporary_unfixable.stderr diff --git a/.github/workflows/clippy_changelog.yml b/.github/workflows/clippy_changelog.yml index a2657bfea490d..1e97154bf8a34 100644 --- a/.github/workflows/clippy_changelog.yml +++ b/.github/workflows/clippy_changelog.yml @@ -24,7 +24,7 @@ jobs: - name: Check Changelog if: ${{ github.event_name == 'pull_request' }} run: | - body=$(curl -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" -s "https://api.github.com/repos/rust-lang/rust-clippy/pulls/$PR_NUMBER" | \ + body=$(curl -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" -s "https://api.github.com/repos/${{ github.repository }}/pulls/$PR_NUMBER" | \ python -c "import sys, json; print(json.load(sys.stdin)['body'])") output=$(awk '/^changelog:\s*\S/ && !/changelog: \[.*\]: your change/' <<< "$body" | sed "s/changelog:\s*//g") if [ -z "$output" ]; then diff --git a/.github/workflows/clippy_mq.yml b/.github/workflows/clippy_mq.yml index 741e745733177..07d5a08304e87 100644 --- a/.github/workflows/clippy_mq.yml +++ b/.github/workflows/clippy_mq.yml @@ -66,7 +66,7 @@ jobs: run: cargo test --features internal -- --skip dogfood - name: Test clippy_lints - run: cargo test --features internal + run: cargo test working-directory: clippy_lints - name: Test clippy_utils diff --git a/.github/workflows/clippy_pr.yml b/.github/workflows/clippy_pr.yml index 80523d91f4fc8..880ebd6e5d5c7 100644 --- a/.github/workflows/clippy_pr.yml +++ b/.github/workflows/clippy_pr.yml @@ -42,7 +42,7 @@ jobs: run: cargo test --features internal - name: Test clippy_lints - run: cargo test --features internal + run: cargo test working-directory: clippy_lints - name: Test clippy_utils diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml index b42f3e7712f10..ede19c11257ee 100644 --- a/.github/workflows/deploy.yml +++ b/.github/workflows/deploy.yml @@ -8,6 +8,10 @@ on: tags: - rust-1.** +concurrency: + group: ${{ github.workflow }} + cancel-in-progress: false + env: TARGET_BRANCH: 'gh-pages' SHA: '${{ github.sha }}' diff --git a/.github/workflows/lintcheck.yml b/.github/workflows/lintcheck.yml index d487c7d949857..70c805903d36e 100644 --- a/.github/workflows/lintcheck.yml +++ b/.github/workflows/lintcheck.yml @@ -66,7 +66,7 @@ jobs: - name: Run lintcheck if: steps.cache-json.outputs.cache-hit != 'true' - run: ./target/debug/lintcheck --format json --all-lints --crates-toml ./lintcheck/ci_crates.toml + run: env CLIPPY_CONF_DIR="$PWD/lintcheck/ci-config" ./target/debug/lintcheck --format json --all-lints --crates-toml ./lintcheck/ci_crates.toml - name: Upload base JSON uses: actions/upload-artifact@v4 @@ -97,7 +97,7 @@ jobs: run: cargo build --manifest-path=lintcheck/Cargo.toml - name: Run lintcheck - run: ./target/debug/lintcheck --format json --all-lints --crates-toml ./lintcheck/ci_crates.toml + run: env CLIPPY_CONF_DIR="$PWD/lintcheck/ci-config" ./target/debug/lintcheck --format json --all-lints --crates-toml ./lintcheck/ci_crates.toml - name: Upload head JSON uses: actions/upload-artifact@v4 diff --git a/CHANGELOG.md b/CHANGELOG.md index 1bf4b51ff0fe2..2b62c9a59aa5d 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -6,11 +6,68 @@ document. ## Unreleased / Beta / In Rust Nightly -[609cd310...master](https://github.com/rust-lang/rust-clippy/compare/609cd310...master) +[3e3715c3...master](https://github.com/rust-lang/rust-clippy/compare/3e3715c3...master) + +## Rust 1.86 + +Current stable, released 2025-04-03 + +[View all 108 merged pull requests](https://github.com/rust-lang/rust-clippy/pulls?q=merged%3A2024-12-27T15%3A11%3A38Z..2025-02-06T13%3A57%3A58Z+base%3Amaster) + +### New Lints + +* Added [`unneeded_struct_pattern`] to `style` [#13465](https://github.com/rust-lang/rust-clippy/pull/13465) +* Added [`doc_overindented_list_items`] to `style` [#13711](https://github.com/rust-lang/rust-clippy/pull/13711) +* Added [`manual_ok_err`] to `complexity` [#13740](https://github.com/rust-lang/rust-clippy/pull/13740) +* Added [`non_std_lazy_statics`] to `pedantic` [#13770](https://github.com/rust-lang/rust-clippy/pull/13770) +* Added [`manual_repeat_n`] to `style` [#13858](https://github.com/rust-lang/rust-clippy/pull/13858) +* Added [`manual_option_as_slice`] to `complexity` [#13901](https://github.com/rust-lang/rust-clippy/pull/13901) +* Added [`double_ended_iterator_last`] to `perf` [#13922](https://github.com/rust-lang/rust-clippy/pull/13922) +* Added [`useless_nonzero_new_unchecked`] to `complexity` [#13993](https://github.com/rust-lang/rust-clippy/pull/13993) +* Added [`sliced_string_as_bytes`] to `perf` [#14002](https://github.com/rust-lang/rust-clippy/pull/14002) +* Added [`unnecessary_semicolon`] to `pedantic` [#14032](https://github.com/rust-lang/rust-clippy/pull/14032) +* Added [`return_and_then`] to `restriction` [#14051](https://github.com/rust-lang/rust-clippy/pull/14051) +* Added [`manual_slice_fill`] to `style` [#14082](https://github.com/rust-lang/rust-clippy/pull/14082) +* Added [`precedence_bits`] to `restriction` [#14115](https://github.com/rust-lang/rust-clippy/pull/14115) + +### Moves and Deprecations + +* Moved [`redundant_locals`] to `suspicious` (from `correctness`, now warn-by-default) + [#13747](https://github.com/rust-lang/rust-clippy/pull/13747) +* Moved [`format_push_string`] to `pedantic` (from `restriction`) + [#13894](https://github.com/rust-lang/rust-clippy/pull/13894) +* Moved [`format_collect`] to `pedantic` (from `perf`, now allow-by-default) + [#13894](https://github.com/rust-lang/rust-clippy/pull/13894) +* Moved [`mutex_integer`] to `restriction` (from `nursery`) [#14110](https://github.com/rust-lang/rust-clippy/pull/14110) + +### Enhancements + +* Add `lint-inconsistent-struct-field-initializers` configuration option to [`inconsistent_struct_constructor`] + [#13737](https://github.com/rust-lang/rust-clippy/pull/13737) +* [`len_zero`] now also triggers if deref target implements `is_empty()` + [#13871](https://github.com/rust-lang/rust-clippy/pull/13871) +* [`obfuscated_if_else`] now also triggers for the `.then(..).unwrap_or(..)` pattern + [#14021](https://github.com/rust-lang/rust-clippy/pull/14021) + +### False Positive Fixes + +* [`trailing_empty_array`] no longer triggers in tests [#13844](https://github.com/rust-lang/rust-clippy/pull/13844) +* [`missing_const_for_fn`] no longer triggers in tests [#13945](https://github.com/rust-lang/rust-clippy/pull/13945) +* [`significant_drop_in_scrutinee`]: do not falsely warn for temporaries created by `.await` expansion + [#13985](https://github.com/rust-lang/rust-clippy/pull/13985) + +### ICE Fixes + +* [`borrow_interior_mutable_const`] Fix an ICE that can occur when taking a reference to a tuple/`struct` field of an + interior mutable `const` [#13877](https://github.com/rust-lang/rust-clippy/pull/13877) + +### Others + +* Clippy now uses Rust edition 2024 [#13751](https://github.com/rust-lang/rust-clippy/pull/13751) ## Rust 1.85 -Current stable, released 2025-02-20 +Released 2025-02-20 [View all 72 merged pull requests](https://github.com/rust-lang/rust-clippy/pulls?q=merged%3A2024-11-15T19%3A31%3A08Z..2024-12-26T13%3A59%3A48Z+base%3Amaster) @@ -5516,6 +5573,7 @@ Released 2018-09-13 [`cast_slice_different_sizes`]: https://rust-lang.github.io/rust-clippy/master/index.html#cast_slice_different_sizes [`cast_slice_from_raw_parts`]: https://rust-lang.github.io/rust-clippy/master/index.html#cast_slice_from_raw_parts [`cfg_not_test`]: https://rust-lang.github.io/rust-clippy/master/index.html#cfg_not_test +[`char_indices_as_byte_indices`]: https://rust-lang.github.io/rust-clippy/master/index.html#char_indices_as_byte_indices [`char_lit_as_u8`]: https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8 [`chars_last_cmp`]: https://rust-lang.github.io/rust-clippy/master/index.html#chars_last_cmp [`chars_next_cmp`]: https://rust-lang.github.io/rust-clippy/master/index.html#chars_next_cmp @@ -5681,6 +5739,7 @@ Released 2018-09-13 [`if_same_then_else`]: https://rust-lang.github.io/rust-clippy/master/index.html#if_same_then_else [`if_then_some_else_none`]: https://rust-lang.github.io/rust-clippy/master/index.html#if_then_some_else_none [`ifs_same_cond`]: https://rust-lang.github.io/rust-clippy/master/index.html#ifs_same_cond +[`ignore_without_reason`]: https://rust-lang.github.io/rust-clippy/master/index.html#ignore_without_reason [`ignored_unit_patterns`]: https://rust-lang.github.io/rust-clippy/master/index.html#ignored_unit_patterns [`impl_hash_borrow_with_str_and_bytes`]: https://rust-lang.github.io/rust-clippy/master/index.html#impl_hash_borrow_with_str_and_bytes [`impl_trait_in_params`]: https://rust-lang.github.io/rust-clippy/master/index.html#impl_trait_in_params @@ -5783,12 +5842,14 @@ Released 2018-09-13 [`macro_metavars_in_unsafe`]: https://rust-lang.github.io/rust-clippy/master/index.html#macro_metavars_in_unsafe [`macro_use_imports`]: https://rust-lang.github.io/rust-clippy/master/index.html#macro_use_imports [`main_recursion`]: https://rust-lang.github.io/rust-clippy/master/index.html#main_recursion +[`manual_abs_diff`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_abs_diff [`manual_assert`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_assert [`manual_async_fn`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_async_fn [`manual_bits`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_bits [`manual_c_str_literals`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_c_str_literals [`manual_clamp`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_clamp [`manual_contains`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_contains +[`manual_dangling_ptr`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_dangling_ptr [`manual_div_ceil`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_div_ceil [`manual_filter`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_filter [`manual_filter_map`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_filter_map @@ -6055,6 +6116,7 @@ Released 2018-09-13 [`redundant_pub_crate`]: https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pub_crate [`redundant_slicing`]: https://rust-lang.github.io/rust-clippy/master/index.html#redundant_slicing [`redundant_static_lifetimes`]: https://rust-lang.github.io/rust-clippy/master/index.html#redundant_static_lifetimes +[`redundant_test_prefix`]: https://rust-lang.github.io/rust-clippy/master/index.html#redundant_test_prefix [`redundant_type_annotations`]: https://rust-lang.github.io/rust-clippy/master/index.html#redundant_type_annotations [`ref_as_ptr`]: https://rust-lang.github.io/rust-clippy/master/index.html#ref_as_ptr [`ref_binding_to_reference`]: https://rust-lang.github.io/rust-clippy/master/index.html#ref_binding_to_reference @@ -6156,6 +6218,7 @@ Released 2018-09-13 [`suspicious_unary_op_formatting`]: https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_unary_op_formatting [`suspicious_xor_used_as_pow`]: https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_xor_used_as_pow [`swap_ptr_to_ref`]: https://rust-lang.github.io/rust-clippy/master/index.html#swap_ptr_to_ref +[`swap_with_temporary`]: https://rust-lang.github.io/rust-clippy/master/index.html#swap_with_temporary [`tabs_in_doc_comments`]: https://rust-lang.github.io/rust-clippy/master/index.html#tabs_in_doc_comments [`temporary_assignment`]: https://rust-lang.github.io/rust-clippy/master/index.html#temporary_assignment [`temporary_cstring_as_ptr`]: https://rust-lang.github.io/rust-clippy/master/index.html#temporary_cstring_as_ptr @@ -6346,6 +6409,7 @@ Released 2018-09-13 [`await-holding-invalid-types`]: https://doc.rust-lang.org/clippy/lint_configuration.html#await-holding-invalid-types [`cargo-ignore-publish`]: https://doc.rust-lang.org/clippy/lint_configuration.html#cargo-ignore-publish [`check-incompatible-msrv-in-tests`]: https://doc.rust-lang.org/clippy/lint_configuration.html#check-incompatible-msrv-in-tests +[`check-inconsistent-struct-field-initializers`]: https://doc.rust-lang.org/clippy/lint_configuration.html#check-inconsistent-struct-field-initializers [`check-private-items`]: https://doc.rust-lang.org/clippy/lint_configuration.html#check-private-items [`cognitive-complexity-threshold`]: https://doc.rust-lang.org/clippy/lint_configuration.html#cognitive-complexity-threshold [`disallowed-macros`]: https://doc.rust-lang.org/clippy/lint_configuration.html#disallowed-macros @@ -6362,7 +6426,7 @@ Released 2018-09-13 [`future-size-threshold`]: https://doc.rust-lang.org/clippy/lint_configuration.html#future-size-threshold [`ignore-interior-mutability`]: https://doc.rust-lang.org/clippy/lint_configuration.html#ignore-interior-mutability [`large-error-threshold`]: https://doc.rust-lang.org/clippy/lint_configuration.html#large-error-threshold -[`lint-inconsistent-struct-field-initializers`]: https://doc.rust-lang.org/clippy/lint_configuration.html#lint-inconsistent-struct-field-initializers +[`lint-commented-code`]: https://doc.rust-lang.org/clippy/lint_configuration.html#lint-commented-code [`literal-representation-threshold`]: https://doc.rust-lang.org/clippy/lint_configuration.html#literal-representation-threshold [`matches-for-let-else`]: https://doc.rust-lang.org/clippy/lint_configuration.html#matches-for-let-else [`max-fn-params-bools`]: https://doc.rust-lang.org/clippy/lint_configuration.html#max-fn-params-bools diff --git a/Cargo.toml b/Cargo.toml index f5a8e3dc387dc..1cfc1c196c0b6 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -1,7 +1,7 @@ [package] name = "clippy" # begin autogenerated version -version = "0.1.87" +version = "0.1.88" # end autogenerated version description = "A bunch of helpful lints to avoid common pitfalls in Rust" repository = "https://github.com/rust-lang/rust-clippy" @@ -27,6 +27,7 @@ clippy_config = { path = "clippy_config" } clippy_lints = { path = "clippy_lints" } clippy_utils = { path = "clippy_utils" } rustc_tools_util = { path = "rustc_tools_util", version = "0.4.2" } +clippy_lints_internal = { path = "clippy_lints_internal", optional = true } tempfile = { version = "3.3", optional = true } termize = "0.1" color-print = "0.3.4" @@ -43,7 +44,7 @@ walkdir = "2.3" filetime = "0.2.9" itertools = "0.12" pulldown-cmark = { version = "0.11", default-features = false, features = ["html"] } -rinja = { version = "0.3", default-features = false, features = ["config"] } +askama = { version = "0.13", default-features = false, features = ["alloc", "config", "derive"] } # UI test dependencies clippy_utils = { path = "clippy_utils" } @@ -58,8 +59,8 @@ tokio = { version = "1", features = ["io-util"] } rustc_tools_util = { path = "rustc_tools_util", version = "0.4.2" } [features] -integration = ["tempfile"] -internal = ["clippy_lints/internal", "tempfile"] +integration = ["dep:tempfile"] +internal = ["dep:clippy_lints_internal", "dep:tempfile"] [package.metadata.rust-analyzer] # This package uses #[feature(rustc_private)] diff --git a/rinja.toml b/askama.toml similarity index 100% rename from rinja.toml rename to askama.toml diff --git a/book/src/SUMMARY.md b/book/src/SUMMARY.md index 19328fdd3cd47..39fe7358ed87a 100644 --- a/book/src/SUMMARY.md +++ b/book/src/SUMMARY.md @@ -30,6 +30,7 @@ - [Updating the Changelog](development/infrastructure/changelog_update.md) - [Release a New Version](development/infrastructure/release.md) - [The Clippy Book](development/infrastructure/book.md) + - [Benchmarking Clippy](development/infrastructure/benchmarking.md) - [Proposals](development/proposals/README.md) - [Roadmap 2021](development/proposals/roadmap-2021.md) - [Syntax Tree Patterns](development/proposals/syntax-tree-patterns.md) diff --git a/book/src/development/adding_lints.md b/book/src/development/adding_lints.md index 0b9010f01071f..e5e82ede4fdf9 100644 --- a/book/src/development/adding_lints.md +++ b/book/src/development/adding_lints.md @@ -99,6 +99,7 @@ struct A; impl A { pub fn fo(&self) {} pub fn foo(&self) {} + //~^ foo_functions pub fn food(&self) {} } @@ -106,12 +107,14 @@ impl A { trait B { fn fo(&self) {} fn foo(&self) {} + //~^ foo_functions fn food(&self) {} } // Plain functions fn fo() {} fn foo() {} +//~^ foo_functions fn food() {} fn main() { @@ -122,17 +125,24 @@ fn main() { } ``` -Now we can run the test with `TESTNAME=foo_functions cargo uibless`, currently -this test is meaningless though. +Note that we are adding comment annotations with the name of our lint to mark +lines where we expect an error. Except for very specific situations +(`//@check-pass`), at least one error marker must be present in a test file for +it to be accepted. + +Once we have implemented our lint we can run `TESTNAME=foo_functions cargo +uibless` to generate the `.stderr` file. If our lint makes use of structured +suggestions then this command will also generate the corresponding `.fixed` +file. While we are working on implementing our lint, we can keep running the UI test. That allows us to check if the output is turning into what we want by checking the `.stderr` file that gets updated on every test run. -Running `TESTNAME=foo_functions cargo uitest` should pass on its own. When we -commit our lint, we need to commit the generated `.stderr` files, too. In -general, you should only commit files changed by `cargo bless` for the -specific lint you are creating/editing. +Once we have implemented our lint running `TESTNAME=foo_functions cargo uitest` +should pass on its own. When we commit our lint, we need to commit the generated + `.stderr` and if applicable `.fixed` files, too. In general, you should only + commit files changed by `cargo bless` for the specific lint you are creating/editing. > _Note:_ you can run multiple test files by specifying a comma separated list: > `TESTNAME=foo_functions,test2,test3`. diff --git a/book/src/development/basics.md b/book/src/development/basics.md index 931e5c3a2942a..4219724ed5df9 100644 --- a/book/src/development/basics.md +++ b/book/src/development/basics.md @@ -147,7 +147,7 @@ following: First, take note of the toolchain [override](https://rust-lang.github.io/rustup/overrides.html) in -`/rust-toolchain`. We will use this override to install Clippy into the right +`/rust-toolchain.toml`. We will use this override to install Clippy into the right toolchain. > Tip: You can view the active toolchain for the current directory with `rustup diff --git a/book/src/development/common_tools_writing_lints.md b/book/src/development/common_tools_writing_lints.md index 051febc2ca5da..2e39f279eae42 100644 --- a/book/src/development/common_tools_writing_lints.md +++ b/book/src/development/common_tools_writing_lints.md @@ -159,19 +159,21 @@ paths for Clippy can be found in [paths.rs][paths] To check if our type defines a method called `some_method`: ```rust -use clippy_utils::ty::is_type_diagnostic_item; -use clippy_utils::return_ty; +use clippy_utils::ty::is_type_lang_item; +use clippy_utils::{sym, return_ty}; impl<'tcx> LateLintPass<'tcx> for MyTypeImpl { fn check_impl_item(&mut self, cx: &LateContext<'tcx>, impl_item: &'tcx ImplItem<'_>) { // Check if item is a method/function if let ImplItemKind::Fn(ref signature, _) = impl_item.kind // Check the method is named `some_method` - && impl_item.ident.name.as_str() == "some_method" + // + // Add `some_method` to `clippy_utils::sym` if it's not already there + && impl_item.ident.name == sym::some_method // We can also check it has a parameter `self` && signature.decl.implicit_self.has_implicit_self() // We can go further and even check if its return type is `String` - && is_type_diagnostic_item(cx, return_ty(cx, impl_item.hir_id), sym!(string_type)) + && is_type_lang_item(cx, return_ty(cx, impl_item.hir_id), LangItem::String) { // ... } diff --git a/book/src/development/defining_lints.md b/book/src/development/defining_lints.md index 169cecd7d11dc..cb6d7b740dbd1 100644 --- a/book/src/development/defining_lints.md +++ b/book/src/development/defining_lints.md @@ -9,7 +9,7 @@ lint involves some boilerplate code. A lint type is the category of items and expressions in which your lint focuses on. -As of the writing of this documentation update, there are 12 _types_ of lints +As of the writing of this documentation update, there are 11 _types_ of lints besides the numerous standalone lints living under `clippy_lints/src/`: - `cargo` @@ -23,7 +23,6 @@ besides the numerous standalone lints living under `clippy_lints/src/`: - `transmute` - `types` - `unit_types` -- `utils / internal` (Clippy internal lints) These types group together lints that share some common behaviors. For instance, `functions` groups together lints that deal with some aspects of functions in diff --git a/book/src/development/infrastructure/benchmarking.md b/book/src/development/infrastructure/benchmarking.md new file mode 100644 index 0000000000000..a3ebce922f6c9 --- /dev/null +++ b/book/src/development/infrastructure/benchmarking.md @@ -0,0 +1,55 @@ +# Benchmarking Clippy + +Benchmarking Clippy is similar to using our Lintcheck tool, in fact, it even +uses the same tool! Just by adding a `--perf` flag it will transform Lintcheck +into a very simple but powerful benchmarking tool! + +It requires having the [`perf` tool][perf] installed, as `perf` is what's actually +profiling Clippy under the hood. + +The lintcheck `--perf` tool generates a series of `perf.data` in the +`target/lintcheck/sources/-` directories. Each `perf.data` +corresponds to the package which is contained. + +Lintcheck uses the `-g` flag, meaning that you can get stack traces for richer +analysis, including with tools such as [flamegraph][flamegraph-perf] +(or [`flamegraph-rs`][flamegraph-rs]). + +Currently, we only measure instruction count, as it's the most reproducible metric +and [rustc-perf][rustc-perf] also considers it the main number to focus on. + +## Benchmarking a PR + +Having a benchmarking tool directly implemented into lintcheck gives us the +ability to benchmark any given PR just by making a before and after + +Here's the way you can get into any PR, benchmark it, and then benchmark +`master`. + +The first `perf.data` will not have any numbers appended, but any subsequent +benchmark will be written to `perf.data.number` with a number growing for 0. +All benchmarks are compressed so that you can + +```bash +git fetch upstream pull//head: +git switch BRANCHNAME + +# Bench +cargo lintcheck --perf + +# Get last common commit, checkout that +LAST_COMMIT=$(git log BRANCHNAME..master --oneline | tail -1 | cut -c 1-11) +git switch -c temporary $LAST_COMMIT + +# We're now on master + +# Bench +cargo lintcheck --perf +perf diff ./target/lintcheck/sources/CRATE/perf.data ./target/lintcheck/sources/CRATE/perf.data.0 +``` + + +[perf]: https://perfwiki.github.io/main/ +[flamegraph-perf]: https://github.com/brendangregg/FlameGraph +[flamegraph-rs]: https://github.com/flamegraph-rs/flamegraph +[rustc-perf]: https://github.com/rust-lang/rustc-perf diff --git a/book/src/development/infrastructure/release.md b/book/src/development/infrastructure/release.md index 8b080c099b81c..a429e0d953c46 100644 --- a/book/src/development/infrastructure/release.md +++ b/book/src/development/infrastructure/release.md @@ -88,9 +88,6 @@ git push upstream stable After updating the `stable` branch, tag the HEAD commit and push it to the Clippy repo. -> Note: Only push the tag once the Deploy GitHub action of the `beta` branch is -> finished. Otherwise the deploy for the tag might fail. - ```bash git tag rust-1.XX.0 # XX should be exchanged with the corresponding version git push upstream rust-1.XX.0 # `upstream` is the `rust-lang/rust-clippy` remote diff --git a/book/src/development/infrastructure/sync.md b/book/src/development/infrastructure/sync.md index da1ad586607f9..2bbdf47a83581 100644 --- a/book/src/development/infrastructure/sync.md +++ b/book/src/development/infrastructure/sync.md @@ -86,7 +86,7 @@ to be run inside the `rust` directory): 4. Bump the nightly version in the Clippy repository by running these commands: ```bash cargo dev sync update_nightly - git commit -m "Bump nightly version -> YYYY-MM-DD" rust-toolchain clippy_utils/README.md + git commit -m "Bump nightly version -> YYYY-MM-DD" rust-toolchain.toml clippy_utils/README.md ``` 5. Open a PR to `rust-lang/rust-clippy` and wait for it to get merged (to accelerate the process ping the `@rust-lang/clippy` team in your PR and/or diff --git a/book/src/development/writing_tests.md b/book/src/development/writing_tests.md index d4cca2a72f0be..1da54322fcf72 100644 --- a/book/src/development/writing_tests.md +++ b/book/src/development/writing_tests.md @@ -41,20 +41,23 @@ Update the file with some examples to get started: struct A; impl A { pub fn fo(&self) {} - pub fn foo(&self) {} //~ ERROR: function called "foo" + pub fn foo(&self) {} + //~^ foo_functions pub fn food(&self) {} } // Default trait methods trait B { fn fo(&self) {} - fn foo(&self) {} //~ ERROR: function called "foo" + fn foo(&self) {} + //~^ foo_functions fn food(&self) {} } // Plain functions fn fo() {} -fn foo() {} //~ ERROR: function called "foo" +fn foo() {} +//~^ foo_functions fn food() {} fn main() { @@ -66,19 +69,38 @@ fn main() { ``` Without actual lint logic to emit the lint when we see a `foo` function name, -this test will just pass, because no lint will be emitted. However, we can now -run the test with the following command: +this test will fail, because we expect errors at lines marked with +`//~^ foo_functions`. However, we can now run the test with the following command: ```sh $ TESTNAME=foo_functions cargo uitest ``` -Clippy will compile and it will conclude with an `ok` for the tests: +Clippy will compile and it will fail complaining it didn't receive any errors: ``` ...Clippy warnings and test outputs... -test compile_test ... ok -test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.48s +error: diagnostic code `clippy::foo_functions` not found on line 8 + --> tests/ui/foo_functions.rs:9:10 + | +9 | //~^ foo_functions + | ^^^^^^^^^^^^^ expected because of this pattern + | + +error: diagnostic code `clippy::foo_functions` not found on line 16 + --> tests/ui/foo_functions.rs:17:10 + | +17 | //~^ foo_functions + | ^^^^^^^^^^^^^ expected because of this pattern + | + +error: diagnostic code `clippy::foo_functions` not found on line 23 + --> tests/ui/foo_functions.rs:24:6 + | +24 | //~^ foo_functions + | ^^^^^^^^^^^^^ expected because of this pattern + | + ``` This is normal. After all, we wrote a bunch of Rust code but we haven't really diff --git a/book/src/lint_configuration.md b/book/src/lint_configuration.md index 3726d6e8a8691..2314d1beac7e0 100644 --- a/book/src/lint_configuration.md +++ b/book/src/lint_configuration.md @@ -425,6 +425,33 @@ Whether to check MSRV compatibility in `#[test]` and `#[cfg(test)]` code. * [`incompatible_msrv`](https://rust-lang.github.io/rust-clippy/master/index.html#incompatible_msrv) +## `check-inconsistent-struct-field-initializers` +Whether to suggest reordering constructor fields when initializers are present. + +Warnings produced by this configuration aren't necessarily fixed by just reordering the fields. Even if the +suggested code would compile, it can change semantics if the initializer expressions have side effects. The +following example [from rust-clippy#11846] shows how the suggestion can run into borrow check errors: + +```rust +struct MyStruct { + vector: Vec, + length: usize +} +fn main() { + let vector = vec![1,2,3]; + MyStruct { length: vector.len(), vector}; +} +``` + +[from rust-clippy#11846]: https://github.com/rust-lang/rust-clippy/issues/11846#issuecomment-1820747924 + +**Default Value:** `false` + +--- +**Affected lints:** +* [`inconsistent_struct_constructor`](https://rust-lang.github.io/rust-clippy/master/index.html#inconsistent_struct_constructor) + + ## `check-private-items` Whether to also run the listed lints on private items. @@ -613,31 +640,15 @@ The maximum size of the `Err`-variant in a `Result` returned from a function * [`result_large_err`](https://rust-lang.github.io/rust-clippy/master/index.html#result_large_err) -## `lint-inconsistent-struct-field-initializers` -Whether to suggest reordering constructor fields when initializers are present. - -Warnings produced by this configuration aren't necessarily fixed by just reordering the fields. Even if the -suggested code would compile, it can change semantics if the initializer expressions have side effects. The -following example [from rust-clippy#11846] shows how the suggestion can run into borrow check errors: - -```rust -struct MyStruct { - vector: Vec, - length: usize -} -fn main() { - let vector = vec![1,2,3]; - MyStruct { length: vector.len(), vector}; -} -``` - -[from rust-clippy#11846]: https://github.com/rust-lang/rust-clippy/issues/11846#issuecomment-1820747924 +## `lint-commented-code` +Whether collapsible `if` chains are linted if they contain comments inside the parts +that would be collapsed. **Default Value:** `false` --- **Affected lints:** -* [`inconsistent_struct_constructor`](https://rust-lang.github.io/rust-clippy/master/index.html#inconsistent_struct_constructor) +* [`collapsible_if`](https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if) ## `literal-representation-threshold` @@ -786,6 +797,7 @@ The minimum rust version that the project supports. Defaults to the `rust-versio * [`iter_kv_map`](https://rust-lang.github.io/rust-clippy/master/index.html#iter_kv_map) * [`legacy_numeric_constants`](https://rust-lang.github.io/rust-clippy/master/index.html#legacy_numeric_constants) * [`lines_filter_map_ok`](https://rust-lang.github.io/rust-clippy/master/index.html#lines_filter_map_ok) +* [`manual_abs_diff`](https://rust-lang.github.io/rust-clippy/master/index.html#manual_abs_diff) * [`manual_bits`](https://rust-lang.github.io/rust-clippy/master/index.html#manual_bits) * [`manual_c_str_literals`](https://rust-lang.github.io/rust-clippy/master/index.html#manual_c_str_literals) * [`manual_clamp`](https://rust-lang.github.io/rust-clippy/master/index.html#manual_clamp) @@ -793,6 +805,7 @@ The minimum rust version that the project supports. Defaults to the `rust-versio * [`manual_flatten`](https://rust-lang.github.io/rust-clippy/master/index.html#manual_flatten) * [`manual_hash_one`](https://rust-lang.github.io/rust-clippy/master/index.html#manual_hash_one) * [`manual_is_ascii_check`](https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_ascii_check) +* [`manual_is_power_of_two`](https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_power_of_two) * [`manual_let_else`](https://rust-lang.github.io/rust-clippy/master/index.html#manual_let_else) * [`manual_midpoint`](https://rust-lang.github.io/rust-clippy/master/index.html#manual_midpoint) * [`manual_non_exhaustive`](https://rust-lang.github.io/rust-clippy/master/index.html#manual_non_exhaustive) @@ -1059,7 +1072,8 @@ The maximum allowed size of a bit mask before suggesting to use 'trailing_zeros' ## `warn-on-all-wildcard-imports` -Whether to allow certain wildcard imports (prelude, super in tests). +Whether to emit warnings on all wildcard imports, including those from `prelude`, from `super` in tests, +or for `pub use` reexports. **Default Value:** `false` diff --git a/clippy.toml b/clippy.toml index f4789c9d03035..0a7724bbe4e61 100644 --- a/clippy.toml +++ b/clippy.toml @@ -1,15 +1,20 @@ avoid-breaking-exported-api = false -lint-inconsistent-struct-field-initializers = true +check-inconsistent-struct-field-initializers = true + +lint-commented-code = true [[disallowed-methods]] path = "rustc_lint::context::LintContext::lint" reason = "this function does not add a link to our documentation, please use the `clippy_utils::diagnostics::span_lint*` functions instead" +allow-invalid = true [[disallowed-methods]] path = "rustc_lint::context::LintContext::span_lint" reason = "this function does not add a link to our documentation, please use the `clippy_utils::diagnostics::span_lint*` functions instead" +allow-invalid = true [[disallowed-methods]] path = "rustc_middle::ty::context::TyCtxt::node_span_lint" reason = "this function does not add a link to our documentation, please use the `clippy_utils::diagnostics::span_lint_hir*` functions instead" +allow-invalid = true diff --git a/clippy_config/Cargo.toml b/clippy_config/Cargo.toml index 934725fccb8ec..93fd2e35d1ba5 100644 --- a/clippy_config/Cargo.toml +++ b/clippy_config/Cargo.toml @@ -1,7 +1,7 @@ [package] name = "clippy_config" # begin autogenerated version -version = "0.1.87" +version = "0.1.88" # end autogenerated version edition = "2024" publish = false diff --git a/clippy_config/src/conf.rs b/clippy_config/src/conf.rs index 798f8b3aa5a90..511cb84527d80 100644 --- a/clippy_config/src/conf.rs +++ b/clippy_config/src/conf.rs @@ -120,12 +120,7 @@ impl ConfError { Self { message: message.into(), suggestion, - span: Span::new( - file.start_pos + BytePos::from_usize(span.start), - file.start_pos + BytePos::from_usize(span.end), - SyntaxContext::root(), - None, - ), + span: span_from_toml_range(file, span), } } } @@ -176,11 +171,61 @@ macro_rules! default_text { }; } +macro_rules! deserialize { + ($map:expr, $ty:ty, $errors:expr, $file:expr) => {{ + let raw_value = $map.next_value::>()?; + let value_span = raw_value.span(); + let value = match <$ty>::deserialize(raw_value.into_inner()) { + Err(e) => { + $errors.push(ConfError::spanned( + $file, + e.to_string().replace('\n', " ").trim(), + None, + value_span, + )); + continue; + }, + Ok(value) => value, + }; + (value, value_span) + }}; + + ($map:expr, $ty:ty, $errors:expr, $file:expr, $replacements_allowed:expr) => {{ + let array = $map.next_value::>>()?; + let mut disallowed_paths_span = Range { + start: usize::MAX, + end: usize::MIN, + }; + let mut disallowed_paths = Vec::new(); + for raw_value in array { + let value_span = raw_value.span(); + let mut disallowed_path = match DisallowedPath::<$replacements_allowed>::deserialize(raw_value.into_inner()) + { + Err(e) => { + $errors.push(ConfError::spanned( + $file, + e.to_string().replace('\n', " ").trim(), + None, + value_span, + )); + continue; + }, + Ok(disallowed_path) => disallowed_path, + }; + disallowed_paths_span = union(&disallowed_paths_span, &value_span); + disallowed_path.set_span(span_from_toml_range($file, value_span)); + disallowed_paths.push(disallowed_path); + } + (disallowed_paths, disallowed_paths_span) + }}; +} + macro_rules! define_Conf { ($( $(#[doc = $doc:literal])+ $(#[conf_deprecated($dep:literal, $new_conf:ident)])? $(#[default_text = $default_text:expr])? + $(#[disallowed_paths_allow_replacements = $replacements_allowed:expr])? $(#[lints($($for_lints:ident),* $(,)?)])? $name:ident: $ty:ty = $default:expr, )*) => { @@ -218,42 +263,46 @@ macro_rules! define_Conf { let mut value_spans = HashMap::new(); let mut errors = Vec::new(); let mut warnings = Vec::new(); + + // Declare a local variable for each field available to a configuration file. $(let mut $name = None;)* + // could get `Field` here directly, but get `String` first for diagnostics while let Some(name) = map.next_key::>()? { - match Field::deserialize(name.get_ref().as_str().into_deserializer()) { + let field = match Field::deserialize(name.get_ref().as_str().into_deserializer()) { Err(e) => { let e: FieldError = e; errors.push(ConfError::spanned(self.0, e.error, e.suggestion, name.span())); + continue; } - $(Ok(Field::$name) => { + Ok(field) => field + }; + + match field { + $(Field::$name => { + // Is this a deprecated field, i.e., is `$dep` set? If so, push a warning. $(warnings.push(ConfError::spanned(self.0, format!("deprecated field `{}`. {}", name.get_ref(), $dep), None, name.span()));)? - let raw_value = map.next_value::>()?; - let value_span = raw_value.span(); - match <$ty>::deserialize(raw_value.into_inner()) { - Err(e) => errors.push(ConfError::spanned(self.0, e.to_string().replace('\n', " ").trim(), None, value_span)), - Ok(value) => match $name { - Some(_) => { - errors.push(ConfError::spanned(self.0, format!("duplicate field `{}`", name.get_ref()), None, name.span())); - } - None => { - $name = Some(value); - value_spans.insert(name.get_ref().as_str().to_string(), value_span); - // $new_conf is the same as one of the defined `$name`s, so - // this variable is defined in line 2 of this function. - $(match $new_conf { - Some(_) => errors.push(ConfError::spanned(self.0, concat!( - "duplicate field `", stringify!($new_conf), - "` (provided as `", stringify!($name), "`)" - ), None, name.span())), - None => $new_conf = $name.clone(), - })? - }, - } + let (value, value_span) = + deserialize!(map, $ty, errors, self.0 $(, $replacements_allowed)?); + // Was this field set previously? + if $name.is_some() { + errors.push(ConfError::spanned(self.0, format!("duplicate field `{}`", name.get_ref()), None, name.span())); + continue; } + $name = Some(value); + value_spans.insert(name.get_ref().as_str().to_string(), value_span); + // If this is a deprecated field, was the new field (`$new_conf`) set previously? + // Note that `$new_conf` is one of the defined `$name`s. + $(match $new_conf { + Some(_) => errors.push(ConfError::spanned(self.0, concat!( + "duplicate field `", stringify!($new_conf), + "` (provided as `", stringify!($name), "`)" + ), None, name.span())), + None => $new_conf = $name.clone(), + })? })* // ignore contents of the third_party key - Ok(Field::third_party) => drop(map.next_value::()) + Field::third_party => drop(map.next_value::()) } } let conf = Conf { $($name: $name.unwrap_or_else(defaults::$name),)* }; @@ -275,6 +324,22 @@ macro_rules! define_Conf { }; } +fn union(x: &Range, y: &Range) -> Range { + Range { + start: cmp::min(x.start, y.start), + end: cmp::max(x.end, y.end), + } +} + +fn span_from_toml_range(file: &SourceFile, span: Range) -> Span { + Span::new( + file.start_pos + BytePos::from_usize(span.start), + file.start_pos + BytePos::from_usize(span.end), + SyntaxContext::root(), + None, + ) +} + define_Conf! { /// Which crates to allow absolute paths from #[lints(absolute_paths)] @@ -461,6 +526,7 @@ define_Conf! { )] avoid_breaking_exported_api: bool = true, /// The list of types which may not be held across an await point. + #[disallowed_paths_allow_replacements = false] #[lints(await_holding_invalid_type)] await_holding_invalid_types: Vec = Vec::new(), /// DEPRECATED LINT: BLACKLISTED_NAME. @@ -474,6 +540,26 @@ define_Conf! { /// Whether to check MSRV compatibility in `#[test]` and `#[cfg(test)]` code. #[lints(incompatible_msrv)] check_incompatible_msrv_in_tests: bool = false, + /// Whether to suggest reordering constructor fields when initializers are present. + /// + /// Warnings produced by this configuration aren't necessarily fixed by just reordering the fields. Even if the + /// suggested code would compile, it can change semantics if the initializer expressions have side effects. The + /// following example [from rust-clippy#11846] shows how the suggestion can run into borrow check errors: + /// + /// ```rust + /// struct MyStruct { + /// vector: Vec, + /// length: usize + /// } + /// fn main() { + /// let vector = vec![1,2,3]; + /// MyStruct { length: vector.len(), vector}; + /// } + /// ``` + /// + /// [from rust-clippy#11846]: https://github.com/rust-lang/rust-clippy/issues/11846#issuecomment-1820747924 + #[lints(inconsistent_struct_constructor)] + check_inconsistent_struct_field_initializers: bool = false, /// Whether to also run the listed lints on private items. #[lints(missing_errors_doc, missing_panics_doc, missing_safety_doc, unnecessary_safety_doc)] check_private_items: bool = false, @@ -486,9 +572,11 @@ define_Conf! { #[conf_deprecated("Please use `cognitive-complexity-threshold` instead", cognitive_complexity_threshold)] cyclomatic_complexity_threshold: u64 = 25, /// The list of disallowed macros, written as fully qualified paths. + #[disallowed_paths_allow_replacements = true] #[lints(disallowed_macros)] disallowed_macros: Vec = Vec::new(), /// The list of disallowed methods, written as fully qualified paths. + #[disallowed_paths_allow_replacements = true] #[lints(disallowed_methods)] disallowed_methods: Vec = Vec::new(), /// The list of disallowed names to lint about. NB: `bar` is not here since it has legitimate uses. The value @@ -497,6 +585,7 @@ define_Conf! { #[lints(disallowed_names)] disallowed_names: Vec = DEFAULT_DISALLOWED_NAMES.iter().map(ToString::to_string).collect(), /// The list of disallowed types, written as fully qualified paths. + #[disallowed_paths_allow_replacements = true] #[lints(disallowed_types)] disallowed_types: Vec = Vec::new(), /// The list of words this lint should not consider as identifiers needing ticks. The value @@ -549,25 +638,15 @@ define_Conf! { /// The maximum size of the `Err`-variant in a `Result` returned from a function #[lints(result_large_err)] large_error_threshold: u64 = 128, + /// Whether collapsible `if` chains are linted if they contain comments inside the parts + /// that would be collapsed. + #[lints(collapsible_if)] + lint_commented_code: bool = false, /// Whether to suggest reordering constructor fields when initializers are present. + /// DEPRECATED CONFIGURATION: lint-inconsistent-struct-field-initializers /// - /// Warnings produced by this configuration aren't necessarily fixed by just reordering the fields. Even if the - /// suggested code would compile, it can change semantics if the initializer expressions have side effects. The - /// following example [from rust-clippy#11846] shows how the suggestion can run into borrow check errors: - /// - /// ```rust - /// struct MyStruct { - /// vector: Vec, - /// length: usize - /// } - /// fn main() { - /// let vector = vec![1,2,3]; - /// MyStruct { length: vector.len(), vector}; - /// } - /// ``` - /// - /// [from rust-clippy#11846]: https://github.com/rust-lang/rust-clippy/issues/11846#issuecomment-1820747924 - #[lints(inconsistent_struct_constructor)] + /// Use the `check-inconsistent-struct-field-initializers` configuration instead. + #[conf_deprecated("Please use `check-inconsistent-struct-field-initializers` instead", check_inconsistent_struct_field_initializers)] lint_inconsistent_struct_field_initializers: bool = false, /// The lower bound for linting decimal literals #[lints(decimal_literal_representation)] @@ -635,6 +714,7 @@ define_Conf! { iter_kv_map, legacy_numeric_constants, lines_filter_map_ok, + manual_abs_diff, manual_bits, manual_c_str_literals, manual_clamp, @@ -642,6 +722,7 @@ define_Conf! { manual_flatten, manual_hash_one, manual_is_ascii_check, + manual_is_power_of_two, manual_let_else, manual_midpoint, manual_non_exhaustive, @@ -760,7 +841,8 @@ define_Conf! { /// The maximum allowed size of a bit mask before suggesting to use 'trailing_zeros' #[lints(verbose_bit_mask)] verbose_bit_mask_threshold: u64 = 1, - /// Whether to allow certain wildcard imports (prelude, super in tests). + /// Whether to emit warnings on all wildcard imports, including those from `prelude`, from `super` in tests, + /// or for `pub use` reexports. #[lints(wildcard_imports)] warn_on_all_wildcard_imports: bool = false, /// Whether to also emit warnings for unsafe blocks with metavariable expansions in **private** macros. @@ -981,7 +1063,23 @@ impl serde::de::Error for FieldError { // set and allows it. use fmt::Write; - let mut expected = expected.to_vec(); + let metadata = get_configuration_metadata(); + let deprecated = metadata + .iter() + .filter_map(|conf| { + if conf.deprecation_reason.is_some() { + Some(conf.name.as_str()) + } else { + None + } + }) + .collect::>(); + + let mut expected = expected + .iter() + .copied() + .filter(|name| !deprecated.contains(name)) + .collect::>(); expected.sort_unstable(); let (rows, column_widths) = calculate_dimensions(&expected); @@ -1064,7 +1162,13 @@ mod tests { fn configs_are_tested() { let mut names: HashSet = crate::get_configuration_metadata() .into_iter() - .map(|meta| meta.name.replace('_', "-")) + .filter_map(|meta| { + if meta.deprecation_reason.is_none() { + Some(meta.name.replace('_', "-")) + } else { + None + } + }) .collect(); let toml_files = WalkDir::new("../tests") diff --git a/clippy_config/src/lib.rs b/clippy_config/src/lib.rs index 5d6e8b875166c..c227b8900b74a 100644 --- a/clippy_config/src/lib.rs +++ b/clippy_config/src/lib.rs @@ -13,6 +13,7 @@ rustc::untranslatable_diagnostic )] +extern crate rustc_data_structures; extern crate rustc_errors; extern crate rustc_hir; extern crate rustc_middle; diff --git a/clippy_config/src/types.rs b/clippy_config/src/types.rs index 8faac9ecffea4..5949eaca7bc1d 100644 --- a/clippy_config/src/types.rs +++ b/clippy_config/src/types.rs @@ -1,5 +1,7 @@ -use clippy_utils::def_path_def_ids; +use rustc_data_structures::fx::FxHashMap; use rustc_errors::{Applicability, Diag}; +use rustc_hir::PrimTy; +use rustc_hir::def::{DefKind, Res}; use rustc_hir::def_id::DefIdMap; use rustc_middle::ty::TyCtxt; use rustc_span::Span; @@ -21,6 +23,17 @@ pub struct DisallowedPath { path: String, reason: Option, replacement: Option, + /// Setting `allow_invalid` to true suppresses a warning if `path` does not refer to an existing + /// definition. + /// + /// This could be useful when conditional compilation is used, or when a clippy.toml file is + /// shared among multiple projects. + allow_invalid: bool, + /// The span of the `DisallowedPath`. + /// + /// Used for diagnostics. + #[serde(skip_serializing)] + span: Span, } impl<'de, const REPLACEMENT_ALLOWED: bool> Deserialize<'de> for DisallowedPath { @@ -36,6 +49,8 @@ impl<'de, const REPLACEMENT_ALLOWED: bool> Deserialize<'de> for DisallowedPath, replacement: Option, + #[serde(rename = "allow-invalid")] + allow_invalid: Option, }, } @@ -58,7 +75,7 @@ impl DisallowedPath { &self.path } - pub fn diag_amendment(&self, span: Span) -> impl FnOnce(&mut Diag<'_, ()>) + use<'_, REPLACEMENT_ALLOWED> { + pub fn diag_amendment(&self, span: Span) -> impl FnOnce(&mut Diag<'_, ()>) { move |diag| { if let Some(replacement) = &self.replacement { diag.span_suggestion( @@ -72,6 +89,14 @@ impl DisallowedPath { } } } + + pub fn span(&self) -> Span { + self.span + } + + pub fn set_span(&mut self, span: Span) { + self.span = span; + } } impl DisallowedPathEnum { @@ -94,20 +119,87 @@ impl DisallowedPathEnum { Self::Simple(_) => None, } } + + fn allow_invalid(&self) -> bool { + match &self { + Self::WithReason { allow_invalid, .. } => allow_invalid.unwrap_or_default(), + Self::Simple(_) => false, + } + } } /// Creates a map of disallowed items to the reason they were disallowed. +#[allow(clippy::type_complexity)] pub fn create_disallowed_map( tcx: TyCtxt<'_>, - disallowed: &'static [DisallowedPath], -) -> DefIdMap<(&'static str, &'static DisallowedPath)> { - disallowed - .iter() - .map(|x| (x.path(), x.path().split("::").collect::>(), x)) - .flat_map(|(name, path, disallowed_path)| { - def_path_def_ids(tcx, &path).map(move |id| (id, (name, disallowed_path))) - }) - .collect() + disallowed_paths: &'static [DisallowedPath], + def_kind_predicate: impl Fn(DefKind) -> bool, + predicate_description: &str, + allow_prim_tys: bool, +) -> ( + DefIdMap<(&'static str, &'static DisallowedPath)>, + FxHashMap)>, +) { + let mut def_ids: DefIdMap<(&'static str, &'static DisallowedPath)> = DefIdMap::default(); + let mut prim_tys: FxHashMap)> = + FxHashMap::default(); + for disallowed_path in disallowed_paths { + let path = disallowed_path.path(); + let mut resolutions = clippy_utils::def_path_res(tcx, &path.split("::").collect::>()); + + let mut found_def_id = None; + let mut found_prim_ty = false; + resolutions.retain(|res| match res { + Res::Def(def_kind, def_id) => { + found_def_id = Some(*def_id); + def_kind_predicate(*def_kind) + }, + Res::PrimTy(_) => { + found_prim_ty = true; + allow_prim_tys + }, + _ => false, + }); + + if resolutions.is_empty() { + let span = disallowed_path.span(); + + if let Some(def_id) = found_def_id { + tcx.sess.dcx().span_warn( + span, + format!( + "expected a {predicate_description}, found {} {}", + tcx.def_descr_article(def_id), + tcx.def_descr(def_id) + ), + ); + } else if found_prim_ty { + tcx.sess.dcx().span_warn( + span, + format!("expected a {predicate_description}, found a primitive type",), + ); + } else if !disallowed_path.allow_invalid { + tcx.sess.dcx().span_warn( + span, + format!("`{path}` does not refer to an existing {predicate_description}"), + ); + } + } + + for res in resolutions { + match res { + Res::Def(_, def_id) => { + def_ids.insert(def_id, (path, disallowed_path)); + }, + Res::PrimTy(ty) => { + prim_tys.insert(ty, (path, disallowed_path)); + }, + _ => unreachable!(), + } + } + } + + (def_ids, prim_tys) } #[derive(Clone, Copy, Debug, PartialEq, Eq, Deserialize, Serialize)] diff --git a/clippy_dev/src/lib.rs b/clippy_dev/src/lib.rs index 9280369c23b8f..c1ffaf269c6fe 100644 --- a/clippy_dev/src/lib.rs +++ b/clippy_dev/src/lib.rs @@ -13,6 +13,7 @@ #[allow(unused_extern_crates)] extern crate rustc_driver; extern crate rustc_lexer; +extern crate rustc_literal_escaper; pub mod dogfood; pub mod fmt; diff --git a/clippy_dev/src/main.rs b/clippy_dev/src/main.rs index 074dea4ab77b6..83f8e66b33476 100644 --- a/clippy_dev/src/main.rs +++ b/clippy_dev/src/main.rs @@ -170,7 +170,6 @@ enum DevCommand { "restriction", "cargo", "nursery", - "internal", ], default_value = "nursery", )] @@ -334,7 +333,7 @@ struct SyncCommand { #[derive(Subcommand)] enum SyncSubcommand { #[command(name = "update_nightly")] - /// Update nightly version in rust-toolchain and `clippy_utils` + /// Update nightly version in `rust-toolchain.toml` and `clippy_utils` UpdateNightly, } diff --git a/clippy_dev/src/setup/toolchain.rs b/clippy_dev/src/setup/toolchain.rs index 2966629cf70a3..ecd80215f7e8f 100644 --- a/clippy_dev/src/setup/toolchain.rs +++ b/clippy_dev/src/setup/toolchain.rs @@ -62,7 +62,7 @@ pub fn create(standalone: bool, force: bool, release: bool, name: &str) { println!("Created toolchain {name}, use it in other projects with e.g. `cargo +{name} clippy`"); if !standalone { - println!("Note: This will need to be re-run whenever the Clippy `rust-toolchain` changes"); + println!("Note: This will need to be re-run whenever the Clippy `rust-toolchain.toml` changes"); } } diff --git a/clippy_dev/src/sync.rs b/clippy_dev/src/sync.rs index 3522d182e90ac..a6b65e561c223 100644 --- a/clippy_dev/src/sync.rs +++ b/clippy_dev/src/sync.rs @@ -10,7 +10,7 @@ pub fn update_nightly() { let date = Utc::now().format("%Y-%m-%d").to_string(); replace_region_in_file( UpdateMode::Change, - Path::new("rust-toolchain"), + Path::new("rust-toolchain.toml"), "# begin autogenerated nightly\n", "# end autogenerated nightly", |res| { diff --git a/clippy_dev/src/update_lints.rs b/clippy_dev/src/update_lints.rs index b80ee5aac7e76..d848a97f86d2f 100644 --- a/clippy_dev/src/update_lints.rs +++ b/clippy_dev/src/update_lints.rs @@ -1,7 +1,8 @@ use crate::utils::{UpdateMode, clippy_project_root, exit_with_failure, replace_region_in_file}; use aho_corasick::AhoCorasickBuilder; use itertools::Itertools; -use rustc_lexer::{LiteralKind, TokenKind, tokenize, unescape}; +use rustc_lexer::{LiteralKind, TokenKind, tokenize}; +use rustc_literal_escaper::{Mode, unescape_unicode}; use std::collections::{HashMap, HashSet}; use std::ffi::OsStr; use std::fmt::{self, Write}; @@ -37,9 +38,8 @@ fn generate_lint_files( deprecated_lints: &[DeprecatedLint], renamed_lints: &[RenamedLint], ) { - let internal_lints = Lint::internal_lints(lints); - let mut usable_lints = Lint::usable_lints(lints); - usable_lints.sort_by_key(|lint| lint.name.clone()); + let mut lints = lints.to_owned(); + lints.sort_by_key(|lint| lint.name.clone()); replace_region_in_file( update_mode, @@ -47,7 +47,7 @@ fn generate_lint_files( "[There are over ", " lints included in this crate!]", |res| { - write!(res, "{}", round_to_fifty(usable_lints.len())).unwrap(); + write!(res, "{}", round_to_fifty(lints.len())).unwrap(); }, ); @@ -57,7 +57,7 @@ fn generate_lint_files( "[There are over ", " lints included in this crate!]", |res| { - write!(res, "{}", round_to_fifty(usable_lints.len())).unwrap(); + write!(res, "{}", round_to_fifty(lints.len())).unwrap(); }, ); @@ -67,7 +67,7 @@ fn generate_lint_files( "\n", "", |res| { - for lint in usable_lints + for lint in lints .iter() .map(|l| &*l.name) .chain(deprecated_lints.iter().filter_map(|l| l.name.strip_prefix("clippy::"))) @@ -86,7 +86,7 @@ fn generate_lint_files( "// begin lints modules, do not remove this comment, it’s used in `update_lints`\n", "// end lints modules, do not remove this comment, it’s used in `update_lints`", |res| { - for lint_mod in usable_lints.iter().map(|l| &l.module).unique().sorted() { + for lint_mod in lints.iter().map(|l| &l.module).unique().sorted() { writeln!(res, "mod {lint_mod};").unwrap(); } }, @@ -95,7 +95,7 @@ fn generate_lint_files( process_file( "clippy_lints/src/declared_lints.rs", update_mode, - &gen_declared_lints(internal_lints.iter(), usable_lints.iter()), + &gen_declared_lints(lints.iter()), ); let content = gen_deprecated_lints_test(deprecated_lints); @@ -106,10 +106,9 @@ fn generate_lint_files( } pub fn print_lints() { - let (lint_list, _, _) = gather_all(); - let usable_lints = Lint::usable_lints(&lint_list); - let usable_lint_count = usable_lints.len(); - let grouped_by_lint_group = Lint::by_lint_group(usable_lints.into_iter()); + let (lints, _, _) = gather_all(); + let lint_count = lints.len(); + let grouped_by_lint_group = Lint::by_lint_group(lints.into_iter()); for (lint_group, mut lints) in grouped_by_lint_group { println!("\n## {lint_group}"); @@ -121,7 +120,7 @@ pub fn print_lints() { } } - println!("there are {usable_lint_count} lints"); + println!("there are {lint_count} lints"); } /// Runs the `rename_lint` command. @@ -402,53 +401,53 @@ fn remove_lint_declaration(name: &str, path: &Path, lints: &mut Vec) -> io } } - if path.exists() { - if let Some(lint) = lints.iter().find(|l| l.name == name) { - if lint.module == name { - // The lint name is the same as the file, we can just delete the entire file - fs::remove_file(path)?; - } else { - // We can't delete the entire file, just remove the declaration - - if let Some(Some("mod.rs")) = path.file_name().map(OsStr::to_str) { - // Remove clippy_lints/src/some_mod/some_lint.rs - let mut lint_mod_path = path.to_path_buf(); - lint_mod_path.set_file_name(name); - lint_mod_path.set_extension("rs"); + if path.exists() + && let Some(lint) = lints.iter().find(|l| l.name == name) + { + if lint.module == name { + // The lint name is the same as the file, we can just delete the entire file + fs::remove_file(path)?; + } else { + // We can't delete the entire file, just remove the declaration - let _ = fs::remove_file(lint_mod_path); - } + if let Some(Some("mod.rs")) = path.file_name().map(OsStr::to_str) { + // Remove clippy_lints/src/some_mod/some_lint.rs + let mut lint_mod_path = path.to_path_buf(); + lint_mod_path.set_file_name(name); + lint_mod_path.set_extension("rs"); - let mut content = - fs::read_to_string(path).unwrap_or_else(|_| panic!("failed to read `{}`", path.to_string_lossy())); + let _ = fs::remove_file(lint_mod_path); + } - eprintln!( - "warn: you will have to manually remove any code related to `{name}` from `{}`", - path.display() - ); + let mut content = + fs::read_to_string(path).unwrap_or_else(|_| panic!("failed to read `{}`", path.to_string_lossy())); - assert!( - content[lint.declaration_range.clone()].contains(&name.to_uppercase()), - "error: `{}` does not contain lint `{}`'s declaration", - path.display(), - lint.name - ); + eprintln!( + "warn: you will have to manually remove any code related to `{name}` from `{}`", + path.display() + ); - // Remove lint declaration (declare_clippy_lint!) - content.replace_range(lint.declaration_range.clone(), ""); + assert!( + content[lint.declaration_range.clone()].contains(&name.to_uppercase()), + "error: `{}` does not contain lint `{}`'s declaration", + path.display(), + lint.name + ); - // Remove the module declaration (mod xyz;) - let mod_decl = format!("\nmod {name};"); - content = content.replacen(&mod_decl, "", 1); + // Remove lint declaration (declare_clippy_lint!) + content.replace_range(lint.declaration_range.clone(), ""); - remove_impl_lint_pass(&lint.name.to_uppercase(), &mut content); - fs::write(path, content).unwrap_or_else(|_| panic!("failed to write to `{}`", path.to_string_lossy())); - } + // Remove the module declaration (mod xyz;) + let mod_decl = format!("\nmod {name};"); + content = content.replacen(&mod_decl, "", 1); - remove_test_assets(name); - remove_lint(name, lints); - return Ok(true); + remove_impl_lint_pass(&lint.name.to_uppercase(), &mut content); + fs::write(path, content).unwrap_or_else(|_| panic!("failed to write to `{}`", path.to_string_lossy())); } + + remove_test_assets(name); + remove_lint(name, lints); + return Ok(true); } Ok(false) @@ -527,22 +526,6 @@ impl Lint { } } - /// Returns all non-deprecated lints and non-internal lints - #[must_use] - fn usable_lints(lints: &[Self]) -> Vec { - lints - .iter() - .filter(|l| !l.group.starts_with("internal")) - .cloned() - .collect() - } - - /// Returns all internal lints - #[must_use] - fn internal_lints(lints: &[Self]) -> Vec { - lints.iter().filter(|l| l.group == "internal").cloned().collect() - } - /// Returns the lints in a `HashMap`, grouped by the different lint groups #[must_use] fn by_lint_group(lints: impl Iterator) -> HashMap> { @@ -579,23 +562,14 @@ impl RenamedLint { /// Generates the code for registering lints #[must_use] -fn gen_declared_lints<'a>( - internal_lints: impl Iterator, - usable_lints: impl Iterator, -) -> String { - let mut details: Vec<_> = internal_lints - .map(|l| (false, &l.module, l.name.to_uppercase())) - .chain(usable_lints.map(|l| (true, &l.module, l.name.to_uppercase()))) - .collect(); +fn gen_declared_lints<'a>(lints: impl Iterator) -> String { + let mut details: Vec<_> = lints.map(|l| (&l.module, l.name.to_uppercase())).collect(); details.sort_unstable(); let mut output = GENERATED_FILE_COMMENT.to_string(); output.push_str("pub static LINTS: &[&crate::LintInfo] = &[\n"); - for (is_public, module_name, lint_name) in details { - if !is_public { - output.push_str(" #[cfg(feature = \"internal\")]\n"); - } + for (module_name, lint_name) in details { let _: fmt::Result = writeln!(output, " crate::{module_name}::{lint_name}_INFO,"); } output.push_str("];\n"); @@ -830,7 +804,7 @@ fn remove_line_splices(s: &str) -> String { .and_then(|s| s.strip_suffix('"')) .unwrap_or_else(|| panic!("expected quoted string, found `{s}`")); let mut res = String::with_capacity(s.len()); - unescape::unescape_unicode(s, unescape::Mode::Str, &mut |range, ch| { + unescape_unicode(s, Mode::Str, &mut |range, ch| { if ch.is_ok() { res.push_str(&s[range]); } @@ -936,41 +910,6 @@ mod tests { assert_eq!(expected, result); } - #[test] - fn test_usable_lints() { - let lints = vec![ - Lint::new( - "should_assert_eq2", - "Not Deprecated", - "\"abc\"", - "module_name", - Range::default(), - ), - Lint::new( - "should_assert_eq2", - "internal", - "\"abc\"", - "module_name", - Range::default(), - ), - Lint::new( - "should_assert_eq2", - "internal_style", - "\"abc\"", - "module_name", - Range::default(), - ), - ]; - let expected = vec![Lint::new( - "should_assert_eq2", - "Not Deprecated", - "\"abc\"", - "module_name", - Range::default(), - )]; - assert_eq!(expected, Lint::usable_lints(&lints)); - } - #[test] fn test_by_lint_group() { let lints = vec![ diff --git a/clippy_dev/src/utils.rs b/clippy_dev/src/utils.rs index b87fcca13b1ce..206816398f50f 100644 --- a/clippy_dev/src/utils.rs +++ b/clippy_dev/src/utils.rs @@ -30,10 +30,10 @@ pub fn clippy_project_root() -> PathBuf { let current_dir = std::env::current_dir().unwrap(); for path in current_dir.ancestors() { let result = fs::read_to_string(path.join("Cargo.toml")); - if let Err(err) = &result { - if err.kind() == io::ErrorKind::NotFound { - continue; - } + if let Err(err) = &result + && err.kind() == io::ErrorKind::NotFound + { + continue; } let content = result.unwrap(); diff --git a/clippy_lints/Cargo.toml b/clippy_lints/Cargo.toml index 54347043a13d4..20951afccbb7e 100644 --- a/clippy_lints/Cargo.toml +++ b/clippy_lints/Cargo.toml @@ -1,7 +1,7 @@ [package] name = "clippy_lints" # begin autogenerated version -version = "0.1.87" +version = "0.1.88" # end autogenerated version description = "A bunch of helpful lints to avoid common pitfalls in Rust" repository = "https://github.com/rust-lang/rust-clippy" @@ -19,10 +19,7 @@ itertools = "0.12" quine-mc_cluskey = "0.2" regex-syntax = "0.8" serde = { version = "1.0", features = ["derive"] } -serde_json = { version = "1.0", optional = true } -tempfile = { version = "3.3.0", optional = true } toml = "0.7.3" -regex = { version = "1.5", optional = true } unicode-normalization = "0.1" unicode-script = { version = "0.5", default-features = false } semver = "1.0" @@ -31,10 +28,6 @@ url = "2.2" [dev-dependencies] walkdir = "2.3" -[features] -# build clippy with internal lints enabled, off by default -internal = ["serde_json", "tempfile", "regex"] - [package.metadata.rust-analyzer] # This crate uses #[feature(rustc_private)] rustc_private = true diff --git a/clippy_lints/src/arbitrary_source_item_ordering.rs b/clippy_lints/src/arbitrary_source_item_ordering.rs index 57cabe437034a..272444475c0c4 100644 --- a/clippy_lints/src/arbitrary_source_item_ordering.rs +++ b/clippy_lints/src/arbitrary_source_item_ordering.rs @@ -5,6 +5,7 @@ use clippy_config::types::{ SourceItemOrderingWithinModuleItemGroupings, }; use clippy_utils::diagnostics::span_lint_and_note; +use clippy_utils::is_cfg_test; use rustc_hir::{ AssocItemKind, FieldDef, HirId, ImplItemRef, IsAuto, Item, ItemKind, Mod, QPath, TraitItemRef, TyKind, Variant, VariantData, @@ -263,10 +264,11 @@ impl<'tcx> LateLintPass<'tcx> for ArbitrarySourceItemOrdering { continue; } - if let Some(cur_v) = cur_v { - if cur_v.ident.name.as_str() > variant.ident.name.as_str() && cur_v.span != variant.span { - Self::lint_member_name(cx, &variant.ident, &cur_v.ident); - } + if let Some(cur_v) = cur_v + && cur_v.ident.name.as_str() > variant.ident.name.as_str() + && cur_v.span != variant.span + { + Self::lint_member_name(cx, &variant.ident, &cur_v.ident); } cur_v = Some(variant); } @@ -278,10 +280,11 @@ impl<'tcx> LateLintPass<'tcx> for ArbitrarySourceItemOrdering { continue; } - if let Some(cur_f) = cur_f { - if cur_f.ident.name.as_str() > field.ident.name.as_str() && cur_f.span != field.span { - Self::lint_member_name(cx, &field.ident, &cur_f.ident); - } + if let Some(cur_f) = cur_f + && cur_f.ident.name.as_str() > field.ident.name.as_str() + && cur_f.span != field.span + { + Self::lint_member_name(cx, &field.ident, &cur_f.ident); } cur_f = Some(field); } @@ -342,7 +345,7 @@ impl<'tcx> LateLintPass<'tcx> for ArbitrarySourceItemOrdering { struct CurItem<'a> { item: &'a Item<'a>, order: usize, - name: String, + name: Option, } let mut cur_t: Option> = None; @@ -359,32 +362,36 @@ impl<'tcx> LateLintPass<'tcx> for ArbitrarySourceItemOrdering { // as no sorting by source map/line of code has to be applied. // for item in items { - if item.span.in_external_macro(cx.sess().source_map()) { + if is_cfg_test(cx.tcx, item.hir_id()) { continue; } - let ident = if let Some(ident) = item.kind.ident() { - ident - } else if let ItemKind::Impl(_) = item.kind - && !get_item_name(item).is_empty() - { - rustc_span::Ident::empty() // FIXME: a bit strange, is there a better way to do it? - } else { - continue; - }; - - if ident.name.as_str().starts_with('_') { - // Filters out unnamed macro-like impls for various derives, - // e.g. serde::Serialize or num_derive::FromPrimitive. + if item.span.in_external_macro(cx.sess().source_map()) { continue; } - if ident.name == rustc_span::sym::std && item.span.is_dummy() { - if let ItemKind::ExternCrate(None, _) = item.kind { - // Filters the auto-included Rust standard library. + if let Some(ident) = item.kind.ident() { + if ident.name.as_str().starts_with('_') { + // Filters out unnamed macro-like impls for various derives, + // e.g. serde::Serialize or num_derive::FromPrimitive. continue; } - println!("Unknown item: {item:?}"); + + if ident.name == rustc_span::sym::std && item.span.is_dummy() { + if let ItemKind::ExternCrate(None, _) = item.kind { + // Filters the auto-included Rust standard library. + continue; + } + if cfg!(debug_assertions) { + rustc_middle::bug!("unknown item: {item:?}"); + } + } + } else if let ItemKind::Impl(_) = item.kind + && get_item_name(item).is_some() + { + // keep going below + } else { + continue; } let item_kind = convert_module_item_kind(&item.kind); @@ -493,7 +500,7 @@ fn convert_module_item_kind(value: &ItemKind<'_>) -> SourceItemOrderingModuleIte /// further in the [Rust Reference, Paths Chapter][rust_ref]. /// /// [rust_ref]: https://doc.rust-lang.org/reference/paths.html#crate-1 -fn get_item_name(item: &Item<'_>) -> String { +fn get_item_name(item: &Item<'_>) -> Option { match item.kind { ItemKind::Impl(im) => { if let TyKind::Path(path) = im.self_ty.kind { @@ -513,27 +520,19 @@ fn get_item_name(item: &Item<'_>) -> String { } segs.push(String::new()); - segs.join("!!") + Some(segs.join("!!")) }, QPath::TypeRelative(_, _path_seg) => { // This case doesn't exist in the clippy tests codebase. - String::new() + None }, - QPath::LangItem(_, _) => String::new(), + QPath::LangItem(_, _) => None, } } else { // Impls for anything that isn't a named type can be skipped. - String::new() + None } }, - // FIXME: `Ident::empty` for anonymous items is a bit strange, is there - // a better way to do it? - _ => item - .kind - .ident() - .unwrap_or(rustc_span::Ident::empty()) - .name - .as_str() - .to_owned(), + _ => item.kind.ident().map(|name| name.as_str().to_owned()), } } diff --git a/clippy_lints/src/as_conversions.rs b/clippy_lints/src/as_conversions.rs index 78102772927c0..27e304a848e33 100644 --- a/clippy_lints/src/as_conversions.rs +++ b/clippy_lints/src/as_conversions.rs @@ -12,17 +12,17 @@ declare_clippy_lint! { /// regardless of whether good alternatives exist or not. If you want more /// precise lints for `as`, please consider using these separate lints: /// - /// - clippy::cast_lossless - /// - clippy::cast_possible_truncation - /// - clippy::cast_possible_wrap - /// - clippy::cast_precision_loss - /// - clippy::cast_sign_loss - /// - clippy::char_lit_as_u8 - /// - clippy::fn_to_numeric_cast - /// - clippy::fn_to_numeric_cast_with_truncation - /// - clippy::ptr_as_ptr - /// - clippy::unnecessary_cast - /// - invalid_reference_casting + /// - `clippy::cast_lossless` + /// - `clippy::cast_possible_truncation` + /// - `clippy::cast_possible_wrap` + /// - `clippy::cast_precision_loss` + /// - `clippy::cast_sign_loss` + /// - `clippy::char_lit_as_u8` + /// - `clippy::fn_to_numeric_cast` + /// - `clippy::fn_to_numeric_cast_with_truncation` + /// - `clippy::ptr_as_ptr` + /// - `clippy::unnecessary_cast` + /// - `invalid_reference_casting` /// /// There is a good explanation the reason why this lint should work in this /// way and how it is useful [in this diff --git a/clippy_lints/src/assigning_clones.rs b/clippy_lints/src/assigning_clones.rs index e5439a6d401b9..9acff676d4f6b 100644 --- a/clippy_lints/src/assigning_clones.rs +++ b/clippy_lints/src/assigning_clones.rs @@ -243,7 +243,7 @@ fn build_sugg<'tcx>( // `lhs = self_expr.clone();` -> `lhs.clone_from(self_expr)` Sugg::hir_with_applicability(cx, lhs, "_", app) } - .maybe_par(); + .maybe_paren(); // Determine whether we need to reference the argument to clone_from(). let clone_receiver_type = cx.typeck_results().expr_ty(fn_arg); @@ -284,7 +284,7 @@ fn build_sugg<'tcx>( let rhs_sugg = if let ExprKind::Unary(hir::UnOp::Deref, ref_expr) = lhs.kind { // `*lhs = rhs.to_owned()` -> `rhs.clone_into(lhs)` // `*lhs = ToOwned::to_owned(rhs)` -> `ToOwned::clone_into(rhs, lhs)` - let sugg = Sugg::hir_with_applicability(cx, ref_expr, "_", app).maybe_par(); + let sugg = Sugg::hir_with_applicability(cx, ref_expr, "_", app).maybe_paren(); let inner_type = cx.typeck_results().expr_ty(ref_expr); // If after unwrapping the dereference, the type is not a mutable reference, we add &mut to make it // deref to a mutable reference. @@ -296,7 +296,7 @@ fn build_sugg<'tcx>( } else { // `lhs = rhs.to_owned()` -> `rhs.clone_into(&mut lhs)` // `lhs = ToOwned::to_owned(rhs)` -> `ToOwned::clone_into(rhs, &mut lhs)` - Sugg::hir_with_applicability(cx, lhs, "_", app).maybe_par().mut_addr() + Sugg::hir_with_applicability(cx, lhs, "_", app).maybe_paren().mut_addr() }; match call_kind { diff --git a/clippy_lints/src/attrs/blanket_clippy_restriction_lints.rs b/clippy_lints/src/attrs/blanket_clippy_restriction_lints.rs index fecf316640636..457692ed5dc53 100644 --- a/clippy_lints/src/attrs/blanket_clippy_restriction_lints.rs +++ b/clippy_lints/src/attrs/blanket_clippy_restriction_lints.rs @@ -8,17 +8,18 @@ use rustc_span::{DUMMY_SP, sym}; pub(super) fn check(cx: &EarlyContext<'_>, name: Symbol, items: &[MetaItemInner]) { for lint in items { - if let Some(lint_name) = extract_clippy_lint(lint) { - if lint_name.as_str() == "restriction" && name != sym::allow { - span_lint_and_help( - cx, - BLANKET_CLIPPY_RESTRICTION_LINTS, - lint.span(), - "`clippy::restriction` is not meant to be enabled as a group", - None, - "enable the restriction lints you need individually", - ); - } + if let Some(lint_name) = extract_clippy_lint(lint) + && lint_name.as_str() == "restriction" + && name != sym::allow + { + span_lint_and_help( + cx, + BLANKET_CLIPPY_RESTRICTION_LINTS, + lint.span(), + "`clippy::restriction` is not meant to be enabled as a group", + None, + "enable the restriction lints you need individually", + ); } } } diff --git a/clippy_lints/src/attrs/deprecated_semver.rs b/clippy_lints/src/attrs/deprecated_semver.rs index d3153ec6613b5..50943b36809d2 100644 --- a/clippy_lints/src/attrs/deprecated_semver.rs +++ b/clippy_lints/src/attrs/deprecated_semver.rs @@ -6,10 +6,10 @@ use rustc_span::Span; use semver::Version; pub(super) fn check(cx: &EarlyContext<'_>, span: Span, lit: &MetaItemLit) { - if let LitKind::Str(is, _) = lit.kind { - if is.as_str() == "TBD" || Version::parse(is.as_str()).is_ok() { - return; - } + if let LitKind::Str(is, _) = lit.kind + && (is.as_str() == "TBD" || Version::parse(is.as_str()).is_ok()) + { + return; } span_lint( cx, diff --git a/clippy_lints/src/attrs/duplicated_attributes.rs b/clippy_lints/src/attrs/duplicated_attributes.rs index 4c84e61b1f26c..a851daaede71b 100644 --- a/clippy_lints/src/attrs/duplicated_attributes.rs +++ b/clippy_lints/src/attrs/duplicated_attributes.rs @@ -36,10 +36,7 @@ fn check_duplicated_attr( } let Some(ident) = attr.ident() else { return }; let name = ident.name; - if name == sym::doc - || name == sym::cfg_attr_trace - || name == sym::rustc_on_unimplemented - || name == sym::reason { + if name == sym::doc || name == sym::cfg_attr_trace || name == sym::rustc_on_unimplemented || name == sym::reason { // FIXME: Would be nice to handle `cfg_attr` as well. Only problem is to check that cfg // conditions are the same. // `#[rustc_on_unimplemented]` contains duplicated subattributes, that's expected. diff --git a/clippy_lints/src/attrs/mod.rs b/clippy_lints/src/attrs/mod.rs index e04d2ad5d13b7..f7f168cb26792 100644 --- a/clippy_lints/src/attrs/mod.rs +++ b/clippy_lints/src/attrs/mod.rs @@ -14,8 +14,9 @@ mod useless_attribute; mod utils; use clippy_config::Conf; +use clippy_utils::diagnostics::span_lint_and_help; use clippy_utils::msrvs::{self, Msrv, MsrvStack}; -use rustc_ast::{self as ast, Attribute, MetaItemInner, MetaItemKind}; +use rustc_ast::{self as ast, AttrArgs, AttrKind, Attribute, MetaItemInner, MetaItemKind}; use rustc_hir::{ImplItem, Item, ItemKind, TraitItem}; use rustc_lint::{EarlyContext, EarlyLintPass, LateContext, LateLintPass}; use rustc_session::impl_lint_pass; @@ -448,6 +449,31 @@ declare_clippy_lint! { "duplicated attribute" } +declare_clippy_lint! { + /// ### What it does + /// Checks for ignored tests without messages. + /// + /// ### Why is this bad? + /// The reason for ignoring the test may not be obvious. + /// + /// ### Example + /// ```no_run + /// #[test] + /// #[ignore] + /// fn test() {} + /// ``` + /// Use instead: + /// ```no_run + /// #[test] + /// #[ignore = "Some good reason"] + /// fn test() {} + /// ``` + #[clippy::version = "1.85.0"] + pub IGNORE_WITHOUT_REASON, + pedantic, + "ignored tests without messages" +} + pub struct Attributes { msrv: Msrv, } @@ -532,6 +558,7 @@ impl_lint_pass!(PostExpansionEarlyAttributes => [ ALLOW_ATTRIBUTES, ALLOW_ATTRIBUTES_WITHOUT_REASON, DEPRECATED_SEMVER, + IGNORE_WITHOUT_REASON, USELESS_ATTRIBUTE, BLANKET_CLIPPY_RESTRICTION_LINTS, SHOULD_PANIC_WITHOUT_EXPECT, @@ -546,28 +573,27 @@ impl EarlyLintPass for PostExpansionEarlyAttributes { } fn check_attribute(&mut self, cx: &EarlyContext<'_>, attr: &Attribute) { - if let Some(items) = &attr.meta_item_list() { - if let Some(ident) = attr.ident() { - if matches!(ident.name, sym::allow) && self.msrv.meets(msrvs::LINT_REASONS_STABILIZATION) { - allow_attributes::check(cx, attr); - } - if matches!(ident.name, sym::allow | sym::expect) && self.msrv.meets(msrvs::LINT_REASONS_STABILIZATION) + if let Some(items) = &attr.meta_item_list() + && let Some(ident) = attr.ident() + { + if matches!(ident.name, sym::allow) && self.msrv.meets(msrvs::LINT_REASONS_STABILIZATION) { + allow_attributes::check(cx, attr); + } + if matches!(ident.name, sym::allow | sym::expect) && self.msrv.meets(msrvs::LINT_REASONS_STABILIZATION) { + allow_attributes_without_reason::check(cx, ident.name, items, attr); + } + if is_lint_level(ident.name, attr.id) { + blanket_clippy_restriction_lints::check(cx, ident.name, items); + } + if items.is_empty() || !attr.has_name(sym::deprecated) { + return; + } + for item in items { + if let MetaItemInner::MetaItem(mi) = &item + && let MetaItemKind::NameValue(lit) = &mi.kind + && mi.has_name(sym::since) { - allow_attributes_without_reason::check(cx, ident.name, items, attr); - } - if is_lint_level(ident.name, attr.id) { - blanket_clippy_restriction_lints::check(cx, ident.name, items); - } - if items.is_empty() || !attr.has_name(sym::deprecated) { - return; - } - for item in items { - if let MetaItemInner::MetaItem(mi) = &item - && let MetaItemKind::NameValue(lit) = &mi.kind - && mi.has_name(sym::since) - { - deprecated_semver::check(cx, item.span(), lit); - } + deprecated_semver::check(cx, item.span(), lit); } } } @@ -575,6 +601,22 @@ impl EarlyLintPass for PostExpansionEarlyAttributes { if attr.has_name(sym::should_panic) { should_panic_without_expect::check(cx, attr); } + + if attr.has_name(sym::ignore) + && match &attr.kind { + AttrKind::Normal(normal_attr) => !matches!(normal_attr.item.args, AttrArgs::Eq { .. }), + AttrKind::DocComment(..) => true, + } + { + span_lint_and_help( + cx, + IGNORE_WITHOUT_REASON, + attr.span, + "`#[ignore]` without reason", + None, + "add a reason with `= \"..\"`", + ); + } } fn check_item(&mut self, cx: &EarlyContext<'_>, item: &'_ ast::Item) { diff --git a/clippy_lints/src/attrs/repr_attributes.rs b/clippy_lints/src/attrs/repr_attributes.rs index e5cfbaf952a70..df01c7fde1819 100644 --- a/clippy_lints/src/attrs/repr_attributes.rs +++ b/clippy_lints/src/attrs/repr_attributes.rs @@ -30,7 +30,7 @@ pub(super) fn check(cx: &LateContext<'_>, item_span: Span, attrs: &[Attribute], diag.warn( "unqualified `#[repr(packed)]` defaults to `#[repr(Rust, packed)]`, which has no stable ABI", ) - .help("qualify the desired ABI explicity via `#[repr(C, packed)]` or `#[repr(Rust, packed)]`") + .help("qualify the desired ABI explicitly via `#[repr(C, packed)]` or `#[repr(Rust, packed)]`") .span_label(packed_span, "`packed` representation set here"); }, ); diff --git a/clippy_lints/src/attrs/useless_attribute.rs b/clippy_lints/src/attrs/useless_attribute.rs index 1cb43ab02a305..d75b73280e632 100644 --- a/clippy_lints/src/attrs/useless_attribute.rs +++ b/clippy_lints/src/attrs/useless_attribute.rs @@ -14,75 +14,75 @@ pub(super) fn check(cx: &EarlyContext<'_>, item: &Item, attrs: &[Attribute]) { if attr.span.in_external_macro(cx.sess().source_map()) { return; } - if let Some(lint_list) = &attr.meta_item_list() { - if attr.ident().is_some_and(|ident| is_lint_level(ident.name, attr.id)) { - for lint in lint_list { - match item.kind { - ItemKind::Use(..) => { - let (namespace @ (Some(sym::clippy) | None), Some(name)) = namespace_and_lint(lint) else { - return; - }; + if let Some(lint_list) = &attr.meta_item_list() + && attr.ident().is_some_and(|ident| is_lint_level(ident.name, attr.id)) + { + for lint in lint_list { + match item.kind { + ItemKind::Use(..) => { + let (namespace @ (Some(sym::clippy) | None), Some(name)) = namespace_and_lint(lint) else { + return; + }; - if namespace.is_none() - && matches!( - name.as_str(), - "ambiguous_glob_reexports" - | "dead_code" - | "deprecated" - | "hidden_glob_reexports" - | "unreachable_pub" - | "unused" - | "unused_braces" - | "unused_import_braces" - | "unused_imports" - ) - { - return; - } + if namespace.is_none() + && matches!( + name.as_str(), + "ambiguous_glob_reexports" + | "dead_code" + | "deprecated" + | "hidden_glob_reexports" + | "unreachable_pub" + | "unused" + | "unused_braces" + | "unused_import_braces" + | "unused_imports" + ) + { + return; + } - if namespace == Some(sym::clippy) - && matches!( - name.as_str(), - "wildcard_imports" - | "enum_glob_use" - | "redundant_pub_crate" - | "macro_use_imports" - | "unsafe_removed_from_name" - | "module_name_repetitions" - | "single_component_path_imports" - | "disallowed_types" - | "unused_trait_names" - ) - { - return; - } - }, - ItemKind::ExternCrate(..) => { - if is_word(lint, sym::unused_imports) && skip_unused_imports { - return; - } - if is_word(lint, sym::unused_extern_crates) { - return; - } - }, - _ => {}, - } + if namespace == Some(sym::clippy) + && matches!( + name.as_str(), + "wildcard_imports" + | "enum_glob_use" + | "redundant_pub_crate" + | "macro_use_imports" + | "unsafe_removed_from_name" + | "module_name_repetitions" + | "single_component_path_imports" + | "disallowed_types" + | "unused_trait_names" + ) + { + return; + } + }, + ItemKind::ExternCrate(..) => { + if is_word(lint, sym::unused_imports) && skip_unused_imports { + return; + } + if is_word(lint, sym::unused_extern_crates) { + return; + } + }, + _ => {}, } - let line_span = first_line_of_span(cx, attr.span); + } + let line_span = first_line_of_span(cx, attr.span); - if let Some(src) = line_span.get_source_text(cx) { - if src.contains("#[") { - #[expect(clippy::collapsible_span_lint_calls)] - span_lint_and_then(cx, USELESS_ATTRIBUTE, line_span, "useless lint attribute", |diag| { - diag.span_suggestion( - line_span, - "if you just forgot a `!`, use", - src.replacen("#[", "#![", 1), - Applicability::MaybeIncorrect, - ); - }); - } - } + if let Some(src) = line_span.get_source_text(cx) + && src.contains("#[") + { + #[expect(clippy::collapsible_span_lint_calls)] + span_lint_and_then(cx, USELESS_ATTRIBUTE, line_span, "useless lint attribute", |diag| { + diag.span_suggestion( + line_span, + "if you just forgot a `!`, use", + src.replacen("#[", "#![", 1), + Applicability::MaybeIncorrect, + ); + }); } } } diff --git a/clippy_lints/src/await_holding_invalid.rs b/clippy_lints/src/await_holding_invalid.rs index 92a0c7f9acbcd..52d1d5b4c67a1 100644 --- a/clippy_lints/src/await_holding_invalid.rs +++ b/clippy_lints/src/await_holding_invalid.rs @@ -179,9 +179,14 @@ pub struct AwaitHolding { impl AwaitHolding { pub(crate) fn new(tcx: TyCtxt<'_>, conf: &'static Conf) -> Self { - Self { - def_ids: create_disallowed_map(tcx, &conf.await_holding_invalid_types), - } + let (def_ids, _) = create_disallowed_map( + tcx, + &conf.await_holding_invalid_types, + crate::disallowed_types::def_kind_predicate, + "type", + false, + ); + Self { def_ids } } } @@ -192,10 +197,9 @@ impl<'tcx> LateLintPass<'tcx> for AwaitHolding { def_id, .. }) = expr.kind + && let Some(coroutine_layout) = cx.tcx.mir_coroutine_witnesses(*def_id) { - if let Some(coroutine_layout) = cx.tcx.mir_coroutine_witnesses(*def_id) { - self.check_interior_types(cx, coroutine_layout); - } + self.check_interior_types(cx, coroutine_layout); } } } diff --git a/clippy_lints/src/bool_to_int_with_if.rs b/clippy_lints/src/bool_to_int_with_if.rs index 612712d16843c..129e774784061 100644 --- a/clippy_lints/src/bool_to_int_with_if.rs +++ b/clippy_lints/src/bool_to_int_with_if.rs @@ -1,6 +1,7 @@ use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::source::HasSession; use clippy_utils::sugg::Sugg; -use clippy_utils::{is_else_clause, is_in_const_context}; +use clippy_utils::{higher, is_else_clause, is_in_const_context, span_contains_comment}; use rustc_ast::LitKind; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind}; @@ -46,18 +47,25 @@ declare_lint_pass!(BoolToIntWithIf => [BOOL_TO_INT_WITH_IF]); impl<'tcx> LateLintPass<'tcx> for BoolToIntWithIf { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) { - if let ExprKind::If(cond, then, Some(else_)) = expr.kind - && matches!(cond.kind, ExprKind::DropTemps(_)) + if !expr.span.from_expansion() + && let Some(higher::If { + cond, + then, + r#else: Some(r#else), + }) = higher::If::hir(expr) && let Some(then_lit) = as_int_bool_lit(then) - && let Some(else_lit) = as_int_bool_lit(else_) + && let Some(else_lit) = as_int_bool_lit(r#else) && then_lit != else_lit - && !expr.span.from_expansion() && !is_in_const_context(cx) { let ty = cx.typeck_results().expr_ty(then); - let mut applicability = Applicability::MachineApplicable; + let mut applicability = if span_contains_comment(cx.sess().source_map(), expr.span) { + Applicability::MaybeIncorrect + } else { + Applicability::MachineApplicable + }; let snippet = { - let mut sugg = Sugg::hir_with_applicability(cx, cond, "..", &mut applicability); + let mut sugg = Sugg::hir_with_context(cx, cond, expr.span.ctxt(), "..", &mut applicability); if !then_lit { sugg = !sugg; } @@ -72,7 +80,7 @@ impl<'tcx> LateLintPass<'tcx> for BoolToIntWithIf { s }; - let into_snippet = snippet.clone().maybe_par(); + let into_snippet = snippet.clone().maybe_paren(); let as_snippet = snippet.as_ty(ty); span_lint_and_then( @@ -91,10 +99,11 @@ impl<'tcx> LateLintPass<'tcx> for BoolToIntWithIf { } } -fn as_int_bool_lit(e: &Expr<'_>) -> Option { - if let ExprKind::Block(b, _) = e.kind +fn as_int_bool_lit(expr: &Expr<'_>) -> Option { + if let ExprKind::Block(b, _) = expr.kind && b.stmts.is_empty() && let Some(e) = b.expr + && !e.span.from_expansion() && let ExprKind::Lit(lit) = e.kind && let LitKind::Int(x, _) = lit.node { diff --git a/clippy_lints/src/booleans.rs b/clippy_lints/src/booleans.rs index 7bb5dbee126ed..bc6ba84772b3d 100644 --- a/clippy_lints/src/booleans.rs +++ b/clippy_lints/src/booleans.rs @@ -13,7 +13,7 @@ use rustc_hir::{BinOpKind, Body, Expr, ExprKind, FnDecl, UnOp}; use rustc_lint::{LateContext, LateLintPass, Level}; use rustc_session::impl_lint_pass; use rustc_span::def_id::LocalDefId; -use rustc_span::{Span, sym}; +use rustc_span::{Span, SyntaxContext, sym}; declare_clippy_lint! { /// ### What it does @@ -242,11 +242,11 @@ struct Hir2Qmm<'a, 'tcx, 'v> { impl<'v> Hir2Qmm<'_, '_, 'v> { fn extract(&mut self, op: BinOpKind, a: &[&'v Expr<'_>], mut v: Vec) -> Result, String> { for a in a { - if let ExprKind::Binary(binop, lhs, rhs) = &a.kind { - if binop.node == op { - v = self.extract(op, &[lhs, rhs], v)?; - continue; - } + if let ExprKind::Binary(binop, lhs, rhs) = &a.kind + && binop.node == op + { + v = self.extract(op, &[lhs, rhs], v)?; + continue; } v.push(self.run(a)?); } @@ -349,9 +349,13 @@ impl SuggestContext<'_, '_, '_> { if let Some(str) = simplify_not(self.cx, self.msrv, terminal) { self.output.push_str(&str); } else { - self.output.push('!'); - self.output - .push_str(&Sugg::hir_opt(self.cx, terminal)?.maybe_par().to_string()); + let mut app = Applicability::MachineApplicable; + let snip = Sugg::hir_with_context(self.cx, terminal, SyntaxContext::root(), "", &mut app); + // Ignore the case If the expression is inside a macro expansion, or the default snippet is used + if app != Applicability::MachineApplicable { + return None; + } + self.output.push_str(&(!snip).to_string()); } }, True | False | Not(_) => { @@ -414,12 +418,12 @@ fn simplify_not(cx: &LateContext<'_>, curr_msrv: Msrv, expr: &Expr<'_>) -> Optio let lhs_snippet = lhs.span.get_source_text(cx)?; let rhs_snippet = rhs.span.get_source_text(cx)?; - if !(lhs_snippet.starts_with('(') && lhs_snippet.ends_with(')')) { - if let (ExprKind::Cast(..), BinOpKind::Ge) = (&lhs.kind, binop.node) { - // e.g. `(a as u64) < b`. Without the parens the `<` is - // interpreted as a start of generic arguments for `u64` - return Some(format!("({lhs_snippet}){op}{rhs_snippet}")); - } + if !(lhs_snippet.starts_with('(') && lhs_snippet.ends_with(')')) + && let (ExprKind::Cast(..), BinOpKind::Ge) = (&lhs.kind, binop.node) + { + // e.g. `(a as u64) < b`. Without the parens the `<` is + // interpreted as a start of generic arguments for `u64` + return Some(format!("({lhs_snippet}){op}{rhs_snippet}")); } Some(format!("{lhs_snippet}{op}{rhs_snippet}")) diff --git a/clippy_lints/src/borrow_deref_ref.rs b/clippy_lints/src/borrow_deref_ref.rs index 8892a9e6b6b08..7cde007a9b66d 100644 --- a/clippy_lints/src/borrow_deref_ref.rs +++ b/clippy_lints/src/borrow_deref_ref.rs @@ -2,7 +2,7 @@ use crate::reference::DEREF_ADDROF; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::SpanRangeExt; use clippy_utils::ty::implements_trait; -use clippy_utils::{get_parent_expr, is_from_proc_macro, is_lint_allowed}; +use clippy_utils::{get_parent_expr, is_from_proc_macro, is_lint_allowed, is_mutable}; use rustc_errors::Applicability; use rustc_hir::{BorrowKind, ExprKind, UnOp}; use rustc_lint::{LateContext, LateLintPass}; @@ -73,6 +73,9 @@ impl<'tcx> LateLintPass<'tcx> for BorrowDerefRef { } }) && !is_from_proc_macro(cx, e) + && let e_ty = cx.typeck_results().expr_ty_adjusted(e) + // check if the reference is coercing to a mutable reference + && (!matches!(e_ty.kind(), ty::Ref(_, _, Mutability::Mut)) || is_mutable(cx, deref_target)) && let Some(deref_text) = deref_target.span.get_source_text(cx) { span_lint_and_then( @@ -90,10 +93,10 @@ impl<'tcx> LateLintPass<'tcx> for BorrowDerefRef { // has deref trait -> give 2 help // doesn't have deref trait -> give 1 help - if let Some(deref_trait_id) = cx.tcx.lang_items().deref_trait() { - if !implements_trait(cx, *inner_ty, deref_trait_id, &[]) { - return; - } + if let Some(deref_trait_id) = cx.tcx.lang_items().deref_trait() + && !implements_trait(cx, *inner_ty, deref_trait_id, &[]) + { + return; } diag.span_suggestion( diff --git a/clippy_lints/src/casts/borrow_as_ptr.rs b/clippy_lints/src/casts/borrow_as_ptr.rs index 64345c81a2482..ad0a4f8cdf35a 100644 --- a/clippy_lints/src/casts/borrow_as_ptr.rs +++ b/clippy_lints/src/casts/borrow_as_ptr.rs @@ -1,11 +1,12 @@ -use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; use clippy_utils::msrvs::Msrv; use clippy_utils::source::{snippet_with_applicability, snippet_with_context}; use clippy_utils::sugg::has_enclosing_paren; -use clippy_utils::{is_expr_temporary_value, is_lint_allowed, msrvs, std_or_core}; +use clippy_utils::{get_parent_expr, is_expr_temporary_value, is_lint_allowed, msrvs, std_or_core}; use rustc_errors::Applicability; use rustc_hir::{BorrowKind, Expr, ExprKind, Mutability, Ty, TyKind}; use rustc_lint::LateContext; +use rustc_middle::ty::adjustment::{Adjust, AutoBorrow}; use rustc_span::BytePos; use super::BORROW_AS_PTR; @@ -29,10 +30,6 @@ pub(super) fn check<'tcx>( } let (suggestion, span) = if msrv.meets(cx, msrvs::RAW_REF_OP) { - let operator_kind = match mutability { - Mutability::Not => "const", - Mutability::Mut => "mut", - }; // Make sure that the span to be replaced doesn't include parentheses, that could break the // suggestion. let span = if has_enclosing_paren(snippet_with_applicability(cx, expr.span, "", &mut app)) { @@ -42,7 +39,7 @@ pub(super) fn check<'tcx>( } else { expr.span }; - (format!("&raw {operator_kind} {snip}"), span) + (format!("&raw {} {snip}", mutability.ptr_str()), span) } else { let Some(std_or_core) = std_or_core(cx) else { return false; @@ -59,3 +56,25 @@ pub(super) fn check<'tcx>( } false } + +/// Check for an implicit cast from reference to raw pointer outside an explicit `as`. +pub(super) fn check_implicit_cast(cx: &LateContext<'_>, expr: &Expr<'_>) { + if !expr.span.from_expansion() + && let ExprKind::AddrOf(BorrowKind::Ref, _, pointee) = expr.kind + && !matches!(get_parent_expr(cx, expr).map(|e| e.kind), Some(ExprKind::Cast(..))) + && let [deref, borrow] = cx.typeck_results().expr_adjustments(expr) + && matches!(deref.kind, Adjust::Deref(..)) + && let Adjust::Borrow(AutoBorrow::RawPtr(mutability)) = borrow.kind + // Do not suggest taking a raw pointer to a temporary value + && !is_expr_temporary_value(cx, pointee) + { + span_lint_and_then(cx, BORROW_AS_PTR, expr.span, "implicit borrow as raw pointer", |diag| { + diag.span_suggestion_verbose( + expr.span.until(pointee.span), + "use a raw pointer instead", + format!("&raw {} ", mutability.ptr_str()), + Applicability::MachineApplicable, + ); + }); + } +} diff --git a/clippy_lints/src/casts/cast_abs_to_unsigned.rs b/clippy_lints/src/casts/cast_abs_to_unsigned.rs index 8b3529e84fc6e..164d3540253a0 100644 --- a/clippy_lints/src/casts/cast_abs_to_unsigned.rs +++ b/clippy_lints/src/casts/cast_abs_to_unsigned.rs @@ -36,7 +36,7 @@ pub(super) fn check( span, format!("casting the result of `{cast_from}::abs()` to {cast_to}"), "replace with", - format!("{}.unsigned_abs()", Sugg::hir(cx, receiver, "..").maybe_par()), + format!("{}.unsigned_abs()", Sugg::hir(cx, receiver, "..").maybe_paren()), Applicability::MachineApplicable, ); } diff --git a/clippy_lints/src/casts/cast_lossless.rs b/clippy_lints/src/casts/cast_lossless.rs index 3ae43732dc03f..0f066fae11844 100644 --- a/clippy_lints/src/casts/cast_lossless.rs +++ b/clippy_lints/src/casts/cast_lossless.rs @@ -42,7 +42,7 @@ pub(super) fn check( diag.span_suggestion_verbose( expr.span, "use `Into::into` instead", - format!("{}.into()", from_sugg.maybe_par()), + format!("{}.into()", from_sugg.maybe_paren()), applicability, ); }, diff --git a/clippy_lints/src/casts/cast_possible_truncation.rs b/clippy_lints/src/casts/cast_possible_truncation.rs index ca973f4bb1aae..8742f5f1a0e0e 100644 --- a/clippy_lints/src/casts/cast_possible_truncation.rs +++ b/clippy_lints/src/casts/cast_possible_truncation.rs @@ -64,11 +64,11 @@ fn apply_reductions(cx: &LateContext<'_>, nbits: u64, expr: &Expr<'_>, signed: b apply_reductions(cx, nbits, left, signed).min(max_bits.unwrap_or(u64::MAX)) }, ExprKind::MethodCall(method, _, [lo, hi], _) => { - if method.ident.as_str() == "clamp" { + if method.ident.as_str() == "clamp" //FIXME: make this a diagnostic item - if let (Some(lo_bits), Some(hi_bits)) = (get_constant_bits(cx, lo), get_constant_bits(cx, hi)) { - return lo_bits.max(hi_bits); - } + && let (Some(lo_bits), Some(hi_bits)) = (get_constant_bits(cx, lo), get_constant_bits(cx, hi)) + { + return lo_bits.max(hi_bits); } nbits }, @@ -185,7 +185,7 @@ fn offer_suggestion( ) { let cast_to_snip = snippet(cx, cast_to_span, ".."); let suggestion = if cast_to_snip == "_" { - format!("{}.try_into()", Sugg::hir(cx, cast_expr, "..").maybe_par()) + format!("{}.try_into()", Sugg::hir(cx, cast_expr, "..").maybe_paren()) } else { format!("{cast_to_snip}::try_from({})", Sugg::hir(cx, cast_expr, "..")) }; diff --git a/clippy_lints/src/casts/cast_ptr_alignment.rs b/clippy_lints/src/casts/cast_ptr_alignment.rs index 57a135abc2e2b..3fca0f8970770 100644 --- a/clippy_lints/src/casts/cast_ptr_alignment.rs +++ b/clippy_lints/src/casts/cast_ptr_alignment.rs @@ -19,16 +19,15 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>) { cx.typeck_results().expr_ty(expr), ); lint_cast_ptr_alignment(cx, expr, cast_from, cast_to); - } else if let ExprKind::MethodCall(method_path, self_arg, [], _) = &expr.kind { - if method_path.ident.name.as_str() == "cast" - && let Some(generic_args) = method_path.args - && let [GenericArg::Type(cast_to)] = generic_args.args - // There probably is no obvious reason to do this, just to be consistent with `as` cases. - && !is_hir_ty_cfg_dependant(cx, cast_to.as_unambig_ty()) - { - let (cast_from, cast_to) = (cx.typeck_results().expr_ty(self_arg), cx.typeck_results().expr_ty(expr)); - lint_cast_ptr_alignment(cx, expr, cast_from, cast_to); - } + } else if let ExprKind::MethodCall(method_path, self_arg, [], _) = &expr.kind + && method_path.ident.name.as_str() == "cast" + && let Some(generic_args) = method_path.args + && let [GenericArg::Type(cast_to)] = generic_args.args + // There probably is no obvious reason to do this, just to be consistent with `as` cases. + && !is_hir_ty_cfg_dependant(cx, cast_to.as_unambig_ty()) + { + let (cast_from, cast_to) = (cx.typeck_results().expr_ty(self_arg), cx.typeck_results().expr_ty(expr)); + lint_cast_ptr_alignment(cx, expr, cast_from, cast_to); } } diff --git a/clippy_lints/src/casts/cast_slice_different_sizes.rs b/clippy_lints/src/casts/cast_slice_different_sizes.rs index c48f253606dcc..a5b295c88b1c7 100644 --- a/clippy_lints/src/casts/cast_slice_different_sizes.rs +++ b/clippy_lints/src/casts/cast_slice_different_sizes.rs @@ -21,42 +21,41 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &Expr<'tcx>, msrv: Msrv) start_ty, end_ty, }) = expr_cast_chain_tys(cx, expr) + && let (Ok(from_layout), Ok(to_layout)) = (cx.layout_of(start_ty.ty), cx.layout_of(end_ty.ty)) { - if let (Ok(from_layout), Ok(to_layout)) = (cx.layout_of(start_ty.ty), cx.layout_of(end_ty.ty)) { - let from_size = from_layout.size.bytes(); - let to_size = to_layout.size.bytes(); - if from_size != to_size && from_size != 0 && to_size != 0 && msrv.meets(cx, msrvs::PTR_SLICE_RAW_PARTS) { - span_lint_and_then( - cx, - CAST_SLICE_DIFFERENT_SIZES, - expr.span, - format!( - "casting between raw pointers to `[{}]` (element size {from_size}) and `[{}]` (element size {to_size}) does not adjust the count", - start_ty.ty, end_ty.ty, - ), - |diag| { - let ptr_snippet = source::snippet(cx, left_cast.span, ".."); + let from_size = from_layout.size.bytes(); + let to_size = to_layout.size.bytes(); + if from_size != to_size && from_size != 0 && to_size != 0 && msrv.meets(cx, msrvs::PTR_SLICE_RAW_PARTS) { + span_lint_and_then( + cx, + CAST_SLICE_DIFFERENT_SIZES, + expr.span, + format!( + "casting between raw pointers to `[{}]` (element size {from_size}) and `[{}]` (element size {to_size}) does not adjust the count", + start_ty.ty, end_ty.ty, + ), + |diag| { + let ptr_snippet = source::snippet(cx, left_cast.span, ".."); - let (mutbl_fn_str, mutbl_ptr_str) = match end_ty.mutbl { - Mutability::Mut => ("_mut", "mut"), - Mutability::Not => ("", "const"), - }; - let sugg = format!( - "core::ptr::slice_from_raw_parts{mutbl_fn_str}({ptr_snippet} as *{mutbl_ptr_str} {}, ..)", - // get just the ty from the TypeAndMut so that the printed type isn't something like `mut - // T`, extract just the `T` - end_ty.ty - ); + let (mutbl_fn_str, mutbl_ptr_str) = match end_ty.mutbl { + Mutability::Mut => ("_mut", "mut"), + Mutability::Not => ("", "const"), + }; + let sugg = format!( + "core::ptr::slice_from_raw_parts{mutbl_fn_str}({ptr_snippet} as *{mutbl_ptr_str} {}, ..)", + // get just the ty from the TypeAndMut so that the printed type isn't something like `mut + // T`, extract just the `T` + end_ty.ty + ); - diag.span_suggestion( - expr.span, - format!("replace with `ptr::slice_from_raw_parts{mutbl_fn_str}`"), - sugg, - rustc_errors::Applicability::HasPlaceholders, - ); - }, - ); - } + diag.span_suggestion( + expr.span, + format!("replace with `ptr::slice_from_raw_parts{mutbl_fn_str}`"), + sugg, + rustc_errors::Applicability::HasPlaceholders, + ); + }, + ); } } } diff --git a/clippy_lints/src/casts/manual_dangling_ptr.rs b/clippy_lints/src/casts/manual_dangling_ptr.rs new file mode 100644 index 0000000000000..8ace27eca895e --- /dev/null +++ b/clippy_lints/src/casts/manual_dangling_ptr.rs @@ -0,0 +1,82 @@ +use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::source::SpanRangeExt; +use clippy_utils::ty::is_normalizable; +use clippy_utils::{expr_or_init, match_def_path, path_def_id, paths, std_or_core}; +use rustc_ast::LitKind; +use rustc_errors::Applicability; +use rustc_hir::{Expr, ExprKind, GenericArg, Mutability, QPath, Ty, TyKind}; +use rustc_lint::LateContext; +use rustc_span::source_map::Spanned; + +use super::MANUAL_DANGLING_PTR; + +pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, from: &Expr<'_>, to: &Ty<'_>) { + if let TyKind::Ptr(ref ptr_ty) = to.kind { + let init_expr = expr_or_init(cx, from); + if is_expr_const_aligned(cx, init_expr, ptr_ty.ty) + && let Some(std_or_core) = std_or_core(cx) + { + let sugg_fn = match ptr_ty.mutbl { + Mutability::Not => "ptr::dangling", + Mutability::Mut => "ptr::dangling_mut", + }; + + let sugg = if let TyKind::Infer(()) = ptr_ty.ty.kind { + format!("{std_or_core}::{sugg_fn}()") + } else if let Some(mut_ty_snip) = ptr_ty.ty.span.get_source_text(cx) { + format!("{std_or_core}::{sugg_fn}::<{mut_ty_snip}>()") + } else { + return; + }; + + span_lint_and_sugg( + cx, + MANUAL_DANGLING_PTR, + expr.span, + "manual creation of a dangling pointer", + "use", + sugg, + Applicability::MachineApplicable, + ); + } + } +} + +// Checks if the given expression is a call to `align_of` whose generic argument matches the target +// type, or a positive constant literal that matches the target type's alignment. +fn is_expr_const_aligned(cx: &LateContext<'_>, expr: &Expr<'_>, to: &Ty<'_>) -> bool { + match expr.kind { + ExprKind::Call(fun, _) => is_align_of_call(cx, fun, to), + ExprKind::Lit(lit) => is_literal_aligned(cx, lit, to), + _ => false, + } +} + +fn is_align_of_call(cx: &LateContext<'_>, fun: &Expr<'_>, to: &Ty<'_>) -> bool { + if let ExprKind::Path(QPath::Resolved(_, path)) = fun.kind + && let Some(fun_id) = path_def_id(cx, fun) + && match_def_path(cx, fun_id, &paths::ALIGN_OF) + && let Some(args) = path.segments.last().and_then(|seg| seg.args) + && let [GenericArg::Type(generic_ty)] = args.args + { + let typeck = cx.typeck_results(); + return typeck.node_type(generic_ty.hir_id) == typeck.node_type(to.hir_id); + } + false +} + +fn is_literal_aligned(cx: &LateContext<'_>, lit: &Spanned, to: &Ty<'_>) -> bool { + let LitKind::Int(val, _) = lit.node else { return false }; + if val == 0 { + return false; + } + let to_mid_ty = cx.typeck_results().node_type(to.hir_id); + is_normalizable(cx, cx.param_env, to_mid_ty) + && cx + .tcx + .layout_of(cx.typing_env().as_query_input(to_mid_ty)) + .is_ok_and(|layout| { + let align = u128::from(layout.align.abi.bytes()); + u128::from(val) <= align + }) +} diff --git a/clippy_lints/src/casts/mod.rs b/clippy_lints/src/casts/mod.rs index dc2a1fa85bf5c..76931fce209e5 100644 --- a/clippy_lints/src/casts/mod.rs +++ b/clippy_lints/src/casts/mod.rs @@ -17,6 +17,7 @@ mod char_lit_as_u8; mod fn_to_numeric_cast; mod fn_to_numeric_cast_any; mod fn_to_numeric_cast_with_truncation; +mod manual_dangling_ptr; mod ptr_as_ptr; mod ptr_cast_constness; mod ref_as_ptr; @@ -71,7 +72,7 @@ declare_clippy_lint! { /// ### Example /// ```no_run /// let y: i8 = -1; - /// y as u128; // will return 18446744073709551615 + /// y as u64; // will return 18446744073709551615 /// ``` #[clippy::version = "pre 1.29.0"] pub CAST_SIGN_LOSS, @@ -759,6 +760,32 @@ declare_clippy_lint! { "detects `as *mut _` and `as *const _` conversion" } +declare_clippy_lint! { + /// ### What it does + /// Checks for casts of small constant literals or `mem::align_of` results to raw pointers. + /// + /// ### Why is this bad? + /// This creates a dangling pointer and is better expressed as + /// {`std`, `core`}`::ptr::`{`dangling`, `dangling_mut`}. + /// + /// ### Example + /// ```no_run + /// let ptr = 4 as *const u32; + /// let aligned = std::mem::align_of::() as *const u32; + /// let mut_ptr: *mut i64 = 8 as *mut _; + /// ``` + /// Use instead: + /// ```no_run + /// let ptr = std::ptr::dangling::(); + /// let aligned = std::ptr::dangling::(); + /// let mut_ptr: *mut i64 = std::ptr::dangling_mut(); + /// ``` + #[clippy::version = "1.87.0"] + pub MANUAL_DANGLING_PTR, + style, + "casting small constant literals to pointers to create dangling pointers" +} + pub struct Casts { msrv: Msrv, } @@ -795,6 +822,7 @@ impl_lint_pass!(Casts => [ ZERO_PTR, REF_AS_PTR, AS_POINTER_UNDERSCORE, + MANUAL_DANGLING_PTR, ]); impl<'tcx> LateLintPass<'tcx> for Casts { @@ -823,6 +851,10 @@ impl<'tcx> LateLintPass<'tcx> for Casts { fn_to_numeric_cast_with_truncation::check(cx, expr, cast_from_expr, cast_from, cast_to); zero_ptr::check(cx, expr, cast_from_expr, cast_to_hir); + if self.msrv.meets(cx, msrvs::MANUAL_DANGLING_PTR) { + manual_dangling_ptr::check(cx, expr, cast_from_expr, cast_to_hir); + } + if cast_to.is_numeric() { cast_possible_truncation::check(cx, expr, cast_from_expr, cast_from, cast_to, cast_to_hir.span); if cast_from.is_numeric() { @@ -846,6 +878,9 @@ impl<'tcx> LateLintPass<'tcx> for Casts { } } + if self.msrv.meets(cx, msrvs::RAW_REF_OP) { + borrow_as_ptr::check_implicit_cast(cx, expr); + } cast_ptr_alignment::check(cx, expr); char_lit_as_u8::check(cx, expr); ptr_as_ptr::check(cx, expr, self.msrv); diff --git a/clippy_lints/src/casts/ptr_as_ptr.rs b/clippy_lints/src/casts/ptr_as_ptr.rs index d57e391b55d54..6f944914b8fd6 100644 --- a/clippy_lints/src/casts/ptr_as_ptr.rs +++ b/clippy_lints/src/casts/ptr_as_ptr.rs @@ -81,7 +81,7 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, msrv: Msrv) { ( "try `pointer::cast`, a safer alternative", - format!("{}.cast{turbofish}()", cast_expr_sugg.maybe_par()), + format!("{}.cast{turbofish}()", cast_expr_sugg.maybe_paren()), ) }; diff --git a/clippy_lints/src/casts/ptr_cast_constness.rs b/clippy_lints/src/casts/ptr_cast_constness.rs index cad9c1df273f0..2471c7355518b 100644 --- a/clippy_lints/src/casts/ptr_cast_constness.rs +++ b/clippy_lints/src/casts/ptr_cast_constness.rs @@ -53,7 +53,8 @@ pub(super) fn check<'tcx>( } if msrv.meets(cx, msrvs::POINTER_CAST_CONSTNESS) { - let sugg = Sugg::hir(cx, cast_expr, "_"); + let mut app = Applicability::MachineApplicable; + let sugg = Sugg::hir_with_context(cx, cast_expr, expr.span.ctxt(), "_", &mut app); let constness = match *to_mutbl { Mutability::Not => "const", Mutability::Mut => "mut", @@ -65,8 +66,8 @@ pub(super) fn check<'tcx>( expr.span, "`as` casting between raw pointers while changing only its constness", format!("try `pointer::cast_{constness}`, a safer alternative"), - format!("{}.cast_{constness}()", sugg.maybe_par()), - Applicability::MachineApplicable, + format!("{}.cast_{constness}()", sugg.maybe_paren()), + app, ); } } diff --git a/clippy_lints/src/casts/unnecessary_cast.rs b/clippy_lints/src/casts/unnecessary_cast.rs index 72953818a708e..ae994e94a32b5 100644 --- a/clippy_lints/src/casts/unnecessary_cast.rs +++ b/clippy_lints/src/casts/unnecessary_cast.rs @@ -130,11 +130,11 @@ pub(super) fn check<'tcx>( | LitKind::Float(_, LitFloatType::Suffixed(_)) if cast_from.kind() == cast_to.kind() => { - if let Some(src) = cast_expr.span.get_source_text(cx) { - if let Some(num_lit) = NumericLiteral::from_lit_kind(&src, &lit.node) { - lint_unnecessary_cast(cx, expr, num_lit.integer, cast_from, cast_to); - return true; - } + if let Some(src) = cast_expr.span.get_source_text(cx) + && let Some(num_lit) = NumericLiteral::from_lit_kind(&src, &lit.node) + { + lint_unnecessary_cast(cx, expr, num_lit.integer, cast_from, cast_to); + return true; } }, _ => {}, diff --git a/clippy_lints/src/checked_conversions.rs b/clippy_lints/src/checked_conversions.rs index b36c8662289ca..8ada608049c7b 100644 --- a/clippy_lints/src/checked_conversions.rs +++ b/clippy_lints/src/checked_conversions.rs @@ -253,11 +253,11 @@ fn get_types_from_cast<'a>( match limit.kind { // `from_type::from(_)` ExprKind::Call(path, _) => { - if let ExprKind::Path(ref path) = path.kind { + if let ExprKind::Path(ref path) = path.kind // `to_type` - if let Some(to_type) = get_implementing_type(path, types, func) { - return Some((from_type, to_type)); - } + && let Some(to_type) = get_implementing_type(path, types, func) + { + return Some((from_type, to_type)); } }, // `to_type::MAX` diff --git a/clippy_lints/src/cognitive_complexity.rs b/clippy_lints/src/cognitive_complexity.rs index a1ff20dee721f..1d44c7e9c88b0 100644 --- a/clippy_lints/src/cognitive_complexity.rs +++ b/clippy_lints/src/cognitive_complexity.rs @@ -62,6 +62,7 @@ impl CognitiveComplexity { let mut cc = 1u64; let mut returns = 0u64; + let mut prev_expr: Option<&ExprKind<'tcx>> = None; let _: Option = for_each_expr_without_closures(expr, |e| { match e.kind { ExprKind::If(_, _, _) => { @@ -73,9 +74,14 @@ impl CognitiveComplexity { } cc += arms.iter().filter(|arm| arm.guard.is_some()).count() as u64; }, - ExprKind::Ret(_) => returns += 1, + ExprKind::Ret(_) => { + if !matches!(prev_expr, Some(ExprKind::Ret(_))) { + returns += 1; + } + }, _ => {}, } + prev_expr = Some(&e.kind); ControlFlow::Continue(()) }); diff --git a/clippy_lints/src/collapsible_if.rs b/clippy_lints/src/collapsible_if.rs index e73bfc6ebf7a1..20fae8a6775b9 100644 --- a/clippy_lints/src/collapsible_if.rs +++ b/clippy_lints/src/collapsible_if.rs @@ -1,10 +1,12 @@ +use clippy_config::Conf; use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; -use clippy_utils::source::{snippet, snippet_block, snippet_block_with_applicability}; -use clippy_utils::sugg::Sugg; -use rustc_ast::ast; +use clippy_utils::source::{IntoSpan as _, SpanRangeExt, snippet, snippet_block, snippet_block_with_applicability}; +use rustc_ast::BinOpKind; use rustc_errors::Applicability; -use rustc_lint::{EarlyContext, EarlyLintPass}; -use rustc_session::declare_lint_pass; +use rustc_hir::{Block, Expr, ExprKind, StmtKind}; +use rustc_lint::{LateContext, LateLintPass}; +use rustc_middle::ty::TyCtxt; +use rustc_session::impl_lint_pass; use rustc_span::Span; declare_clippy_lint! { @@ -75,105 +77,152 @@ declare_clippy_lint! { "nested `else`-`if` expressions that can be collapsed (e.g., `else { if x { ... } }`)" } -declare_lint_pass!(CollapsibleIf => [COLLAPSIBLE_IF, COLLAPSIBLE_ELSE_IF]); +pub struct CollapsibleIf { + let_chains_enabled: bool, + lint_commented_code: bool, +} + +impl CollapsibleIf { + pub fn new(tcx: TyCtxt<'_>, conf: &'static Conf) -> Self { + Self { + let_chains_enabled: tcx.features().let_chains(), + lint_commented_code: conf.lint_commented_code, + } + } -impl EarlyLintPass for CollapsibleIf { - fn check_expr(&mut self, cx: &EarlyContext<'_>, expr: &ast::Expr) { - if let ast::ExprKind::If(cond, then, else_) = &expr.kind + fn check_collapsible_else_if(cx: &LateContext<'_>, then_span: Span, else_block: &Block<'_>) { + if !block_starts_with_comment(cx, else_block) + && let Some(else_) = expr_block(else_block) + && cx.tcx.hir_attrs(else_.hir_id).is_empty() + && !else_.span.from_expansion() + && let ExprKind::If(..) = else_.kind + { + // Prevent "elseif" + // Check that the "else" is followed by whitespace + let up_to_else = then_span.between(else_block.span); + let requires_space = if let Some(c) = snippet(cx, up_to_else, "..").chars().last() { + !c.is_whitespace() + } else { + false + }; + + let mut applicability = Applicability::MachineApplicable; + span_lint_and_sugg( + cx, + COLLAPSIBLE_ELSE_IF, + else_block.span, + "this `else { if .. }` block can be collapsed", + "collapse nested if block", + format!( + "{}{}", + if requires_space { " " } else { "" }, + snippet_block_with_applicability(cx, else_.span, "..", Some(else_block.span), &mut applicability) + ), + applicability, + ); + } + } + + fn check_collapsible_if_if(&self, cx: &LateContext<'_>, expr: &Expr<'_>, check: &Expr<'_>, then: &Block<'_>) { + if let Some(inner) = expr_block(then) + && cx.tcx.hir_attrs(inner.hir_id).is_empty() + && let ExprKind::If(check_inner, _, None) = &inner.kind + && self.eligible_condition(check_inner) + && let ctxt = expr.span.ctxt() + && inner.span.ctxt() == ctxt + && (self.lint_commented_code || !block_starts_with_comment(cx, then)) + { + span_lint_and_then( + cx, + COLLAPSIBLE_IF, + expr.span, + "this `if` statement can be collapsed", + |diag| { + let then_open_bracket = then.span.split_at(1).0.with_leading_whitespace(cx).into_span(); + let then_closing_bracket = { + let end = then.span.shrink_to_hi(); + end.with_lo(end.lo() - rustc_span::BytePos(1)) + .with_leading_whitespace(cx) + .into_span() + }; + let inner_if = inner.span.split_at(2).0; + let mut sugg = vec![ + // Remove the outer then block `{` + (then_open_bracket, String::new()), + // Remove the outer then block '}' + (then_closing_bracket, String::new()), + // Replace inner `if` by `&&` + (inner_if, String::from("&&")), + ]; + sugg.extend(parens_around(check)); + sugg.extend(parens_around(check_inner)); + + diag.multipart_suggestion("collapse nested if block", sugg, Applicability::MachineApplicable); + }, + ); + } + } + + pub fn eligible_condition(&self, cond: &Expr<'_>) -> bool { + self.let_chains_enabled || !matches!(cond.kind, ExprKind::Let(..)) + } +} + +impl_lint_pass!(CollapsibleIf => [COLLAPSIBLE_IF, COLLAPSIBLE_ELSE_IF]); + +impl LateLintPass<'_> for CollapsibleIf { + fn check_expr(&mut self, cx: &LateContext<'_>, expr: &Expr<'_>) { + if let ExprKind::If(cond, then, else_) = &expr.kind && !expr.span.from_expansion() { - if let Some(else_) = else_ { - check_collapsible_maybe_if_let(cx, then.span, else_); - } else if !matches!(cond.kind, ast::ExprKind::Let(..)) { - check_collapsible_no_if_let(cx, expr, cond, then); + if let Some(else_) = else_ + && let ExprKind::Block(else_, None) = else_.kind + { + Self::check_collapsible_else_if(cx, then.span, else_); + } else if else_.is_none() + && self.eligible_condition(cond) + && let ExprKind::Block(then, None) = then.kind + { + self.check_collapsible_if_if(cx, expr, cond, then); } } } } -fn block_starts_with_comment(cx: &EarlyContext<'_>, expr: &ast::Block) -> bool { +fn block_starts_with_comment(cx: &LateContext<'_>, block: &Block<'_>) -> bool { // We trim all opening braces and whitespaces and then check if the next string is a comment. - let trimmed_block_text = snippet_block(cx, expr.span, "..", None) + let trimmed_block_text = snippet_block(cx, block.span, "..", None) .trim_start_matches(|c: char| c.is_whitespace() || c == '{') .to_owned(); trimmed_block_text.starts_with("//") || trimmed_block_text.starts_with("/*") } -fn check_collapsible_maybe_if_let(cx: &EarlyContext<'_>, then_span: Span, else_: &ast::Expr) { - if let ast::ExprKind::Block(ref block, _) = else_.kind - && !block_starts_with_comment(cx, block) - && let Some(else_) = expr_block(block) - && else_.attrs.is_empty() - && !else_.span.from_expansion() - && let ast::ExprKind::If(..) = else_.kind - { - // Prevent "elseif" - // Check that the "else" is followed by whitespace - let up_to_else = then_span.between(block.span); - let requires_space = if let Some(c) = snippet(cx, up_to_else, "..").chars().last() { - !c.is_whitespace() - } else { - false - }; - - let mut applicability = Applicability::MachineApplicable; - span_lint_and_sugg( - cx, - COLLAPSIBLE_ELSE_IF, - block.span, - "this `else { if .. }` block can be collapsed", - "collapse nested if block", - format!( - "{}{}", - if requires_space { " " } else { "" }, - snippet_block_with_applicability(cx, else_.span, "..", Some(block.span), &mut applicability) - ), - applicability, - ); - } -} - -fn check_collapsible_no_if_let(cx: &EarlyContext<'_>, expr: &ast::Expr, check: &ast::Expr, then: &ast::Block) { - if !block_starts_with_comment(cx, then) - && let Some(inner) = expr_block(then) - && inner.attrs.is_empty() - && let ast::ExprKind::If(ref check_inner, ref content, None) = inner.kind - // Prevent triggering on `if c { if let a = b { .. } }`. - && !matches!(check_inner.kind, ast::ExprKind::Let(..)) - && let ctxt = expr.span.ctxt() - && inner.span.ctxt() == ctxt - { - span_lint_and_then( - cx, - COLLAPSIBLE_IF, - expr.span, - "this `if` statement can be collapsed", - |diag| { - let mut app = Applicability::MachineApplicable; - let lhs = Sugg::ast(cx, check, "..", ctxt, &mut app); - let rhs = Sugg::ast(cx, check_inner, "..", ctxt, &mut app); - diag.span_suggestion( - expr.span, - "collapse nested if block", - format!( - "if {} {}", - lhs.and(&rhs), - snippet_block(cx, content.span, "..", Some(expr.span)), - ), - app, // snippet - ); - }, - ); +/// If `block` is a block with either one expression or a statement containing an expression, +/// return the expression. We don't peel blocks recursively, as extra blocks might be intentional. +fn expr_block<'tcx>(block: &Block<'tcx>) -> Option<&'tcx Expr<'tcx>> { + match block.stmts { + [] => block.expr, + [stmt] => { + if let StmtKind::Semi(expr) = stmt.kind { + Some(expr) + } else { + None + } + }, + _ => None, } } -/// If the block contains only one expression, return it. -fn expr_block(block: &ast::Block) -> Option<&ast::Expr> { - if let [stmt] = &*block.stmts - && let ast::StmtKind::Expr(expr) | ast::StmtKind::Semi(expr) = &stmt.kind +/// If the expression is a `||`, suggest parentheses around it. +fn parens_around(expr: &Expr<'_>) -> Vec<(Span, String)> { + if let ExprKind::Binary(op, _, _) = expr.peel_drop_temps().kind + && op.node == BinOpKind::Or { - Some(expr) + vec![ + (expr.span.shrink_to_lo(), String::from("(")), + (expr.span.shrink_to_hi(), String::from(")")), + ] } else { - None + vec![] } } diff --git a/clippy_lints/src/comparison_chain.rs b/clippy_lints/src/comparison_chain.rs index 0e7f01e44b049..9c3009a86cdc0 100644 --- a/clippy_lints/src/comparison_chain.rs +++ b/clippy_lints/src/comparison_chain.rs @@ -125,7 +125,7 @@ impl<'tcx> LateLintPass<'tcx> for ComparisonChain { let ExprKind::Binary(_, lhs, rhs) = conds[0].kind else { unreachable!(); }; - let lhs = Sugg::hir(cx, lhs, "..").maybe_par(); + let lhs = Sugg::hir(cx, lhs, "..").maybe_paren(); let rhs = Sugg::hir(cx, rhs, "..").addr(); span_lint_and_sugg( cx, diff --git a/clippy_lints/src/copies.rs b/clippy_lints/src/copies.rs index 03ed9c657b30a..42fbe6438d4ea 100644 --- a/clippy_lints/src/copies.rs +++ b/clippy_lints/src/copies.rs @@ -256,7 +256,7 @@ fn lint_branches_sharing_code<'tcx>( let suggestion = reindent_multiline(&suggestion, true, indent); let span = span.with_hi(last_block.span.hi()); - // Improve formatting if the inner block has indention (i.e. normal Rust formatting) + // Improve formatting if the inner block has indentation (i.e. normal Rust formatting) let span = span .map_range(cx, |src, range| { (range.start > 4 && src.get(range.start - 4..range.start)? == " ") @@ -539,10 +539,10 @@ fn check_for_warn_of_moved_symbol(cx: &LateContext<'_>, symbols: &[(HirId, Symbo .filter(|stmt| !ignore_span.overlaps(stmt.span)) .try_for_each(|stmt| intravisit::walk_stmt(&mut walker, stmt)); - if let Some(expr) = block.expr { - if res.is_continue() { - res = intravisit::walk_expr(&mut walker, expr); - } + if let Some(expr) = block.expr + && res.is_continue() + { + res = intravisit::walk_expr(&mut walker, expr); } res.is_break() diff --git a/clippy_lints/src/declare_clippy_lint.rs b/clippy_lints/src/declare_clippy_lint.rs index 4d908af4084f3..9f82f87672794 100644 --- a/clippy_lints/src/declare_clippy_lint.rs +++ b/clippy_lints/src/declare_clippy_lint.rs @@ -165,17 +165,4 @@ macro_rules! declare_clippy_lint { $(, $eval_always)? } }; - - ( - $(#[doc = $lit:literal])* - pub $lint_name:ident, - internal, - $desc:literal - ) => { - declare_clippy_lint! {@ - $(#[doc = $lit])* - pub $lint_name, Allow, crate::LintCategory::Internal, $desc, - None, "0.0.0" - } - }; } diff --git a/clippy_lints/src/declared_lints.rs b/clippy_lints/src/declared_lints.rs index 39e4516370709..2cccd6ba27027 100644 --- a/clippy_lints/src/declared_lints.rs +++ b/clippy_lints/src/declared_lints.rs @@ -3,36 +3,6 @@ // Manual edits will be overwritten. pub static LINTS: &[&crate::LintInfo] = &[ - #[cfg(feature = "internal")] - crate::utils::internal_lints::almost_standard_lint_formulation::ALMOST_STANDARD_LINT_FORMULATION_INFO, - #[cfg(feature = "internal")] - crate::utils::internal_lints::collapsible_calls::COLLAPSIBLE_SPAN_LINT_CALLS_INFO, - #[cfg(feature = "internal")] - crate::utils::internal_lints::interning_defined_symbol::INTERNING_DEFINED_SYMBOL_INFO, - #[cfg(feature = "internal")] - crate::utils::internal_lints::interning_defined_symbol::UNNECESSARY_SYMBOL_STR_INFO, - #[cfg(feature = "internal")] - crate::utils::internal_lints::invalid_paths::INVALID_PATHS_INFO, - #[cfg(feature = "internal")] - crate::utils::internal_lints::lint_without_lint_pass::DEFAULT_LINT_INFO, - #[cfg(feature = "internal")] - crate::utils::internal_lints::lint_without_lint_pass::INVALID_CLIPPY_VERSION_ATTRIBUTE_INFO, - #[cfg(feature = "internal")] - crate::utils::internal_lints::lint_without_lint_pass::LINT_WITHOUT_LINT_PASS_INFO, - #[cfg(feature = "internal")] - crate::utils::internal_lints::lint_without_lint_pass::MISSING_CLIPPY_VERSION_ATTRIBUTE_INFO, - #[cfg(feature = "internal")] - crate::utils::internal_lints::msrv_attr_impl::MISSING_MSRV_ATTR_IMPL_INFO, - #[cfg(feature = "internal")] - crate::utils::internal_lints::outer_expn_data_pass::OUTER_EXPN_EXPN_DATA_INFO, - #[cfg(feature = "internal")] - crate::utils::internal_lints::produce_ice::PRODUCE_ICE_INFO, - #[cfg(feature = "internal")] - crate::utils::internal_lints::slow_symbol_comparisons::SLOW_SYMBOL_COMPARISONS_INFO, - #[cfg(feature = "internal")] - crate::utils::internal_lints::unnecessary_def_path::UNNECESSARY_DEF_PATH_INFO, - #[cfg(feature = "internal")] - crate::utils::internal_lints::unsorted_clippy_utils_paths::UNSORTED_CLIPPY_UTILS_PATHS_INFO, crate::absolute_paths::ABSOLUTE_PATHS_INFO, crate::almost_complete_range::ALMOST_COMPLETE_RANGE_INFO, crate::approx_const::APPROX_CONSTANT_INFO, @@ -52,6 +22,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::attrs::DEPRECATED_CLIPPY_CFG_ATTR_INFO, crate::attrs::DEPRECATED_SEMVER_INFO, crate::attrs::DUPLICATED_ATTRIBUTES_INFO, + crate::attrs::IGNORE_WITHOUT_REASON_INFO, crate::attrs::INLINE_ALWAYS_INFO, crate::attrs::MIXED_ATTRIBUTES_STYLE_INFO, crate::attrs::NON_MINIMAL_CFG_INFO, @@ -96,6 +67,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::casts::FN_TO_NUMERIC_CAST_INFO, crate::casts::FN_TO_NUMERIC_CAST_ANY_INFO, crate::casts::FN_TO_NUMERIC_CAST_WITH_TRUNCATION_INFO, + crate::casts::MANUAL_DANGLING_PTR_INFO, crate::casts::PTR_AS_PTR_INFO, crate::casts::PTR_CAST_CONSTNESS_INFO, crate::casts::REF_AS_PTR_INFO, @@ -286,6 +258,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::literal_representation::UNREADABLE_LITERAL_INFO, crate::literal_representation::UNUSUAL_BYTE_GROUPINGS_INFO, crate::literal_string_with_formatting_args::LITERAL_STRING_WITH_FORMATTING_ARGS_INFO, + crate::loops::CHAR_INDICES_AS_BYTE_INDICES_INFO, crate::loops::EMPTY_LOOP_INFO, crate::loops::EXPLICIT_COUNTER_LOOP_INFO, crate::loops::EXPLICIT_INTO_ITER_LOOP_INFO, @@ -312,6 +285,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::macro_metavars_in_unsafe::MACRO_METAVARS_IN_UNSAFE_INFO, crate::macro_use::MACRO_USE_IMPORTS_INFO, crate::main_recursion::MAIN_RECURSION_INFO, + crate::manual_abs_diff::MANUAL_ABS_DIFF_INFO, crate::manual_assert::MANUAL_ASSERT_INFO, crate::manual_async_fn::MANUAL_ASYNC_FN_INFO, crate::manual_bits::MANUAL_BITS_INFO, @@ -334,7 +308,6 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::manual_slice_size_calculation::MANUAL_SLICE_SIZE_CALCULATION_INFO, crate::manual_string_new::MANUAL_STRING_NEW_INFO, crate::manual_strip::MANUAL_STRIP_INFO, - crate::manual_unwrap_or_default::MANUAL_UNWRAP_OR_DEFAULT_INFO, crate::map_unit_fn::OPTION_MAP_UNIT_FN_INFO, crate::map_unit_fn::RESULT_MAP_UNIT_FN_INFO, crate::match_result_ok::MATCH_RESULT_OK_INFO, @@ -344,10 +317,10 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::matches::MANUAL_MAP_INFO, crate::matches::MANUAL_OK_ERR_INFO, crate::matches::MANUAL_UNWRAP_OR_INFO, + crate::matches::MANUAL_UNWRAP_OR_DEFAULT_INFO, crate::matches::MATCH_AS_REF_INFO, crate::matches::MATCH_BOOL_INFO, crate::matches::MATCH_LIKE_MATCHES_MACRO_INFO, - crate::matches::MATCH_ON_VEC_ITEMS_INFO, crate::matches::MATCH_OVERLAPPING_ARM_INFO, crate::matches::MATCH_REF_PATS_INFO, crate::matches::MATCH_SAME_ARMS_INFO, @@ -488,6 +461,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::methods::SUSPICIOUS_OPEN_OPTIONS_INFO, crate::methods::SUSPICIOUS_SPLITN_INFO, crate::methods::SUSPICIOUS_TO_OWNED_INFO, + crate::methods::SWAP_WITH_TEMPORARY_INFO, crate::methods::TYPE_ID_ON_BOX_INFO, crate::methods::UNBUFFERED_BYTES_INFO, crate::methods::UNINIT_ASSUMED_INIT_INFO, @@ -664,6 +638,7 @@ pub static LINTS: &[&crate::LintInfo] = &[ crate::redundant_slicing::DEREF_BY_SLICING_INFO, crate::redundant_slicing::REDUNDANT_SLICING_INFO, crate::redundant_static_lifetimes::REDUNDANT_STATIC_LIFETIMES_INFO, + crate::redundant_test_prefix::REDUNDANT_TEST_PREFIX_INFO, crate::redundant_type_annotations::REDUNDANT_TYPE_ANNOTATIONS_INFO, crate::ref_option_ref::REF_OPTION_REF_INFO, crate::ref_patterns::REF_PATTERNS_INFO, diff --git a/clippy_lints/src/default_constructed_unit_structs.rs b/clippy_lints/src/default_constructed_unit_structs.rs index bbd5dc15542d1..f8a9037fc8047 100644 --- a/clippy_lints/src/default_constructed_unit_structs.rs +++ b/clippy_lints/src/default_constructed_unit_structs.rs @@ -1,5 +1,6 @@ -use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::is_ty_alias; +use clippy_utils::source::SpanRangeExt as _; use hir::ExprKind; use hir::def::Res; use rustc_errors::Applicability; @@ -70,15 +71,26 @@ impl LateLintPass<'_> for DefaultConstructedUnitStructs { && let var @ ty::VariantDef { ctor: Some((hir::def::CtorKind::Const, _)), .. } = def.non_enum_variant() && !var.is_field_list_non_exhaustive() && !expr.span.from_expansion() && !qpath.span().from_expansion() + // do not suggest replacing an expression by a type name with placeholders + && !base.is_suggestable_infer_ty() { - span_lint_and_sugg( + let mut removals = vec![(expr.span.with_lo(qpath.qself_span().hi()), String::new())]; + if expr.span.with_source_text(cx, |s| s.starts_with('<')) == Some(true) { + // Remove `<`, '>` has already been removed by the existing removal expression. + removals.push((expr.span.with_hi(qpath.qself_span().lo()), String::new())); + } + span_lint_and_then( cx, DEFAULT_CONSTRUCTED_UNIT_STRUCTS, - expr.span.with_lo(qpath.qself_span().hi()), + expr.span, "use of `default` to create a unit struct", - "remove this call to `default`", - String::new(), - Applicability::MachineApplicable, + |diag| { + diag.multipart_suggestion( + "remove this call to `default`", + removals, + Applicability::MachineApplicable, + ); + }, ); } } diff --git a/clippy_lints/src/deprecated_lints.rs b/clippy_lints/src/deprecated_lints.rs index de66ead4f4204..b60c11d79d48f 100644 --- a/clippy_lints/src/deprecated_lints.rs +++ b/clippy_lints/src/deprecated_lints.rs @@ -42,6 +42,8 @@ declare_with_version! { DEPRECATED(DEPRECATED_VERSION): &[(&str, &str)] = &[ ("clippy::wrong_pub_self_convention", "`clippy::wrong_self_convention` now covers this case via the `avoid-breaking-exported-api` config"), #[clippy::version = "1.86.0"] ("clippy::option_map_or_err_ok", "`clippy::manual_ok_or` covers this case"), + #[clippy::version = "1.86.0"] + ("clippy::match_on_vec_items", "`clippy::indexing_slicing` covers indexing and slicing on `Vec<_>`"), // end deprecated lints. used by `cargo dev deprecate_lint` ]} diff --git a/clippy_lints/src/dereference.rs b/clippy_lints/src/dereference.rs index 849c60b89b97e..7da5a530eaa3d 100644 --- a/clippy_lints/src/dereference.rs +++ b/clippy_lints/src/dereference.rs @@ -1133,61 +1133,60 @@ fn report<'tcx>( impl<'tcx> Dereferencing<'tcx> { fn check_local_usage(&mut self, cx: &LateContext<'tcx>, e: &Expr<'tcx>, local: HirId) { - if let Some(outer_pat) = self.ref_locals.get_mut(&local) { - if let Some(pat) = outer_pat { - // Check for auto-deref - if !matches!( - cx.typeck_results().expr_adjustments(e), - [ - Adjustment { - kind: Adjust::Deref(_), - .. - }, - Adjustment { - kind: Adjust::Deref(_), - .. - }, + if let Some(outer_pat) = self.ref_locals.get_mut(&local) + && let Some(pat) = outer_pat + // Check for auto-deref + && !matches!( + cx.typeck_results().expr_adjustments(e), + [ + Adjustment { + kind: Adjust::Deref(_), .. - ] - ) { - match get_parent_expr(cx, e) { - // Field accesses are the same no matter the number of references. - Some(Expr { - kind: ExprKind::Field(..), - .. - }) => (), - Some(&Expr { - span, - kind: ExprKind::Unary(UnOp::Deref, _), - .. - }) if !span.from_expansion() => { - // Remove explicit deref. - let snip = snippet_with_context(cx, e.span, span.ctxt(), "..", &mut pat.app).0; - pat.replacements.push((span, snip.into())); - }, - Some(parent) if !parent.span.from_expansion() => { - // Double reference might be needed at this point. - if parent.precedence() == ExprPrecedence::Unambiguous { - // Parentheses would be needed here, don't lint. - *outer_pat = None; - } else { - pat.always_deref = false; - let snip = snippet_with_context(cx, e.span, parent.span.ctxt(), "..", &mut pat.app).0; - pat.replacements.push((e.span, format!("&{snip}"))); - } - }, - _ if !e.span.from_expansion() => { - // Double reference might be needed at this point. - pat.always_deref = false; - let snip = snippet_with_applicability(cx, e.span, "..", &mut pat.app); - pat.replacements.push((e.span, format!("&{snip}"))); - }, - // Edge case for macros. The span of the identifier will usually match the context of the - // binding, but not if the identifier was created in a macro. e.g. `concat_idents` and proc - // macros - _ => *outer_pat = None, + }, + Adjustment { + kind: Adjust::Deref(_), + .. + }, + .. + ] + ) + { + match get_parent_expr(cx, e) { + // Field accesses are the same no matter the number of references. + Some(Expr { + kind: ExprKind::Field(..), + .. + }) => (), + Some(&Expr { + span, + kind: ExprKind::Unary(UnOp::Deref, _), + .. + }) if !span.from_expansion() => { + // Remove explicit deref. + let snip = snippet_with_context(cx, e.span, span.ctxt(), "..", &mut pat.app).0; + pat.replacements.push((span, snip.into())); + }, + Some(parent) if !parent.span.from_expansion() => { + // Double reference might be needed at this point. + if parent.precedence() == ExprPrecedence::Unambiguous { + // Parentheses would be needed here, don't lint. + *outer_pat = None; + } else { + pat.always_deref = false; + let snip = snippet_with_context(cx, e.span, parent.span.ctxt(), "..", &mut pat.app).0; + pat.replacements.push((e.span, format!("&{snip}"))); } - } + }, + _ if !e.span.from_expansion() => { + // Double reference might be needed at this point. + pat.always_deref = false; + let snip = snippet_with_applicability(cx, e.span, "..", &mut pat.app); + pat.replacements.push((e.span, format!("&{snip}"))); + }, + // Edge case for macros. The span of the identifier will usually match the context of the + // binding, but not if the identifier was created in a macro. e.g. `concat_idents` and proc + // macros + _ => *outer_pat = None, } } } diff --git a/clippy_lints/src/derivable_impls.rs b/clippy_lints/src/derivable_impls.rs index 8d9222e4bf61e..10331b3855b84 100644 --- a/clippy_lints/src/derivable_impls.rs +++ b/clippy_lints/src/derivable_impls.rs @@ -94,18 +94,18 @@ fn check_struct<'tcx>( ty_args: GenericArgsRef<'_>, typeck_results: &'tcx TypeckResults<'tcx>, ) { - if let TyKind::Path(QPath::Resolved(_, p)) = self_ty.kind { - if let Some(PathSegment { args, .. }) = p.segments.last() { - let args = args.map(|a| a.args).unwrap_or(&[]); - - // ty_args contains the generic parameters of the type declaration, while args contains the - // arguments used at instantiation time. If both len are not equal, it means that some - // parameters were not provided (which means that the default values were used); in this - // case we will not risk suggesting too broad a rewrite. We won't either if any argument - // is a type or a const. - if ty_args.len() != args.len() || args.iter().any(|arg| !matches!(arg, GenericArg::Lifetime(_))) { - return; - } + if let TyKind::Path(QPath::Resolved(_, p)) = self_ty.kind + && let Some(PathSegment { args, .. }) = p.segments.last() + { + let args = args.map(|a| a.args).unwrap_or(&[]); + + // ty_args contains the generic parameters of the type declaration, while args contains the + // arguments used at instantiation time. If both len are not equal, it means that some + // parameters were not provided (which means that the default values were used); in this + // case we will not risk suggesting too broad a rewrite. We won't either if any argument + // is a type or a const. + if ty_args.len() != args.len() || args.iter().any(|arg| !matches!(arg, GenericArg::Lifetime(_))) { + return; } } @@ -188,7 +188,7 @@ impl<'tcx> LateLintPass<'tcx> for DerivableImpls { self_ty, .. }) = item.kind - && !cx.tcx.has_attr(item.owner_id, sym::automatically_derived) + && !cx.tcx.is_automatically_derived(item.owner_id.to_def_id()) && !item.span.from_expansion() && let Some(def_id) = trait_ref.trait_def_id() && cx.tcx.is_diagnostic_item(sym::Default, def_id) diff --git a/clippy_lints/src/derive.rs b/clippy_lints/src/derive.rs index c85aca8d04efd..06528f875a29b 100644 --- a/clippy_lints/src/derive.rs +++ b/clippy_lints/src/derive.rs @@ -206,7 +206,7 @@ impl<'tcx> LateLintPass<'tcx> for Derive { }) = item.kind { let ty = cx.tcx.type_of(item.owner_id).instantiate_identity(); - let is_automatically_derived = cx.tcx.has_attr(item.owner_id, sym::automatically_derived); + let is_automatically_derived = cx.tcx.is_automatically_derived(item.owner_id.to_def_id()); check_hash_peq(cx, item.span, trait_ref, ty, is_automatically_derived); check_ord_partial_ord(cx, item.span, trait_ref, ty, is_automatically_derived); @@ -235,7 +235,7 @@ fn check_hash_peq<'tcx>( { // Look for the PartialEq implementations for `ty` cx.tcx.for_each_relevant_impl(peq_trait_def_id, ty, |impl_id| { - let peq_is_automatically_derived = cx.tcx.has_attr(impl_id, sym::automatically_derived); + let peq_is_automatically_derived = cx.tcx.is_automatically_derived(impl_id); if !hash_is_automatically_derived || peq_is_automatically_derived { return; @@ -278,7 +278,7 @@ fn check_ord_partial_ord<'tcx>( { // Look for the PartialOrd implementations for `ty` cx.tcx.for_each_relevant_impl(partial_ord_trait_def_id, ty, |impl_id| { - let partial_ord_is_automatically_derived = cx.tcx.has_attr(impl_id, sym::automatically_derived); + let partial_ord_is_automatically_derived = cx.tcx.is_automatically_derived(impl_id); if partial_ord_is_automatically_derived == ord_is_automatically_derived { return; @@ -349,6 +349,10 @@ fn check_copy_clone<'tcx>(cx: &LateContext<'tcx>, item: &Item<'_>, trait_ref: &h { return; } + // The presence of `unsafe` fields prevents deriving `Clone` automatically + if ty_adt.all_fields().any(|f| f.safety.is_unsafe()) { + return; + } span_lint_and_note( cx, @@ -426,10 +430,10 @@ impl<'tcx> Visitor<'tcx> for UnsafeVisitor<'_, 'tcx> { } fn visit_expr(&mut self, expr: &'tcx Expr<'_>) -> Self::Result { - if let ExprKind::Block(block, _) = expr.kind { - if block.rules == BlockCheckMode::UnsafeBlock(UnsafeSource::UserProvided) { - return ControlFlow::Break(()); - } + if let ExprKind::Block(block, _) = expr.kind + && block.rules == BlockCheckMode::UnsafeBlock(UnsafeSource::UserProvided) + { + return ControlFlow::Break(()); } walk_expr(self, expr) @@ -479,7 +483,7 @@ fn ty_implements_eq_trait<'tcx>(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>, eq_trait_id: De tcx.non_blanket_impls_for_ty(eq_trait_id, ty).next().is_some() } -/// Creates the `ParamEnv` used for the give type's derived `Eq` impl. +/// Creates the `ParamEnv` used for the given type's derived `Eq` impl. fn typing_env_for_derived_eq(tcx: TyCtxt<'_>, did: DefId, eq_trait_id: DefId) -> ty::TypingEnv<'_> { // Initial map from generic index to param def. // Vec<(param_def, needs_eq)> diff --git a/clippy_lints/src/disallowed_macros.rs b/clippy_lints/src/disallowed_macros.rs index 4b8a689e99478..fc6af204a74a0 100644 --- a/clippy_lints/src/disallowed_macros.rs +++ b/clippy_lints/src/disallowed_macros.rs @@ -4,6 +4,7 @@ use clippy_config::types::{DisallowedPath, create_disallowed_map}; use clippy_utils::diagnostics::{span_lint_and_then, span_lint_hir_and_then}; use clippy_utils::macros::macro_backtrace; use rustc_data_structures::fx::FxHashSet; +use rustc_hir::def::DefKind; use rustc_hir::def_id::DefIdMap; use rustc_hir::{ AmbigArg, Expr, ExprKind, ForeignItem, HirId, ImplItem, Item, ItemKind, OwnerId, Pat, Path, Stmt, TraitItem, Ty, @@ -72,8 +73,15 @@ pub struct DisallowedMacros { impl DisallowedMacros { pub fn new(tcx: TyCtxt<'_>, conf: &'static Conf, earlies: AttrStorage) -> Self { + let (disallowed, _) = create_disallowed_map( + tcx, + &conf.disallowed_macros, + |def_kind| matches!(def_kind, DefKind::Macro(_)), + "macro", + false, + ); Self { - disallowed: create_disallowed_map(tcx, &conf.disallowed_macros), + disallowed, seen: FxHashSet::default(), derive_src: None, earlies, diff --git a/clippy_lints/src/disallowed_methods.rs b/clippy_lints/src/disallowed_methods.rs index 149cf1cf2def1..1382dafa931e4 100644 --- a/clippy_lints/src/disallowed_methods.rs +++ b/clippy_lints/src/disallowed_methods.rs @@ -63,9 +63,19 @@ pub struct DisallowedMethods { impl DisallowedMethods { pub fn new(tcx: TyCtxt<'_>, conf: &'static Conf) -> Self { - Self { - disallowed: create_disallowed_map(tcx, &conf.disallowed_methods), - } + let (disallowed, _) = create_disallowed_map( + tcx, + &conf.disallowed_methods, + |def_kind| { + matches!( + def_kind, + DefKind::Fn | DefKind::Ctor(_, CtorKind::Fn) | DefKind::AssocFn + ) + }, + "function", + false, + ); + Self { disallowed } } } @@ -74,12 +84,7 @@ impl_lint_pass!(DisallowedMethods => [DISALLOWED_METHODS]); impl<'tcx> LateLintPass<'tcx> for DisallowedMethods { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { let (id, span) = match &expr.kind { - ExprKind::Path(path) - if let Res::Def(DefKind::Fn | DefKind::Ctor(_, CtorKind::Fn) | DefKind::AssocFn, id) = - cx.qpath_res(path, expr.hir_id) => - { - (id, expr.span) - }, + ExprKind::Path(path) if let Res::Def(_, id) = cx.qpath_res(path, expr.hir_id) => (id, expr.span), ExprKind::MethodCall(name, ..) if let Some(id) = cx.typeck_results().type_dependent_def_id(expr.hir_id) => { (id, name.ident.span) }, diff --git a/clippy_lints/src/disallowed_types.rs b/clippy_lints/src/disallowed_types.rs index 38903596414cf..2bae82648ac76 100644 --- a/clippy_lints/src/disallowed_types.rs +++ b/clippy_lints/src/disallowed_types.rs @@ -1,8 +1,8 @@ use clippy_config::Conf; -use clippy_config::types::DisallowedPath; +use clippy_config::types::{DisallowedPath, create_disallowed_map}; use clippy_utils::diagnostics::span_lint_and_then; use rustc_data_structures::fx::FxHashMap; -use rustc_hir::def::Res; +use rustc_hir::def::{DefKind, Res}; use rustc_hir::def_id::DefIdMap; use rustc_hir::{AmbigArg, Item, ItemKind, PolyTraitRef, PrimTy, Ty, TyKind, UseKind}; use rustc_lint::{LateContext, LateLintPass}; @@ -60,22 +60,7 @@ pub struct DisallowedTypes { impl DisallowedTypes { pub fn new(tcx: TyCtxt<'_>, conf: &'static Conf) -> Self { - let mut def_ids = DefIdMap::default(); - let mut prim_tys = FxHashMap::default(); - for disallowed_path in &conf.disallowed_types { - let path: Vec<_> = disallowed_path.path().split("::").collect::>(); - for res in clippy_utils::def_path_res(tcx, &path) { - match res { - Res::Def(_, id) => { - def_ids.insert(id, (disallowed_path.path(), disallowed_path)); - }, - Res::PrimTy(ty) => { - prim_tys.insert(ty, (disallowed_path.path(), disallowed_path)); - }, - _ => {}, - } - } - } + let (def_ids, prim_tys) = create_disallowed_map(tcx, &conf.disallowed_types, def_kind_predicate, "type", true); Self { def_ids, prim_tys } } @@ -95,6 +80,19 @@ impl DisallowedTypes { } } +pub fn def_kind_predicate(def_kind: DefKind) -> bool { + matches!( + def_kind, + DefKind::Struct + | DefKind::Union + | DefKind::Enum + | DefKind::Trait + | DefKind::TyAlias + | DefKind::ForeignTy + | DefKind::AssocTy + ) +} + impl_lint_pass!(DisallowedTypes => [DISALLOWED_TYPES]); impl<'tcx> LateLintPass<'tcx> for DisallowedTypes { diff --git a/clippy_lints/src/doc/markdown.rs b/clippy_lints/src/doc/markdown.rs index 8cdaba88e5095..7a1c7c675d2ec 100644 --- a/clippy_lints/src/doc/markdown.rs +++ b/clippy_lints/src/doc/markdown.rs @@ -113,20 +113,20 @@ fn check_word(cx: &LateContext<'_>, word: &str, span: Span, code_level: isize, b s != "-" && s.contains('-') } - if let Ok(url) = Url::parse(word) { + if let Ok(url) = Url::parse(word) // try to get around the fact that `foo::bar` parses as a valid URL - if !url.cannot_be_a_base() { - span_lint_and_sugg( - cx, - DOC_MARKDOWN, - span, - "you should put bare URLs between `<`/`>` or make a proper Markdown link", - "try", - format!("<{word}>"), - Applicability::MachineApplicable, - ); - return; - } + && !url.cannot_be_a_base() + { + span_lint_and_sugg( + cx, + DOC_MARKDOWN, + span, + "you should put bare URLs between `<`/`>` or make a proper Markdown link", + "try", + format!("<{word}>"), + Applicability::MachineApplicable, + ); + return; } // We assume that mixed-case words are not meant to be put inside backticks. (Issue #2343) diff --git a/clippy_lints/src/doc/missing_headers.rs b/clippy_lints/src/doc/missing_headers.rs index e75abf28bace8..039937e0207b0 100644 --- a/clippy_lints/src/doc/missing_headers.rs +++ b/clippy_lints/src/doc/missing_headers.rs @@ -1,11 +1,14 @@ use super::{DocHeaders, MISSING_ERRORS_DOC, MISSING_PANICS_DOC, MISSING_SAFETY_DOC, UNNECESSARY_SAFETY_DOC}; use clippy_utils::diagnostics::{span_lint, span_lint_and_note}; -use clippy_utils::ty::{implements_trait_with_env, is_type_diagnostic_item}; -use clippy_utils::{is_doc_hidden, return_ty}; +use clippy_utils::macros::{is_panic, root_macro_call_first_node}; +use clippy_utils::ty::{get_type_diagnostic_name, implements_trait_with_env, is_type_diagnostic_item}; +use clippy_utils::visitors::for_each_expr; +use clippy_utils::{fulfill_or_allowed, is_doc_hidden, method_chain_args, return_ty}; use rustc_hir::{BodyId, FnSig, OwnerId, Safety}; use rustc_lint::LateContext; use rustc_middle::ty; use rustc_span::{Span, sym}; +use std::ops::ControlFlow; pub fn check( cx: &LateContext<'_>, @@ -13,7 +16,6 @@ pub fn check( sig: FnSig<'_>, headers: DocHeaders, body_id: Option, - panic_info: Option<(Span, bool)>, check_private_items: bool, ) { if !check_private_items && !cx.effective_visibilities.is_exported(owner_id.def_id) { @@ -46,13 +48,16 @@ pub fn check( ), _ => (), } - if !headers.panics && panic_info.is_some_and(|el| !el.1) { + if !headers.panics + && let Some(body_id) = body_id + && let Some(panic_span) = find_panic(cx, body_id) + { span_lint_and_note( cx, MISSING_PANICS_DOC, span, "docs for function which may panic missing `# Panics` section", - panic_info.map(|el| el.0), + Some(panic_span), "first possible panic found here", ); } @@ -89,3 +94,39 @@ pub fn check( } } } + +fn find_panic(cx: &LateContext<'_>, body_id: BodyId) -> Option { + let mut panic_span = None; + let typeck = cx.tcx.typeck_body(body_id); + for_each_expr(cx, cx.tcx.hir_body(body_id), |expr| { + if let Some(macro_call) = root_macro_call_first_node(cx, expr) + && (is_panic(cx, macro_call.def_id) + || matches!( + cx.tcx.get_diagnostic_name(macro_call.def_id), + Some(sym::assert_macro | sym::assert_eq_macro | sym::assert_ne_macro) + )) + && !cx.tcx.hir_is_inside_const_context(expr.hir_id) + && !fulfill_or_allowed(cx, MISSING_PANICS_DOC, [expr.hir_id]) + && panic_span.is_none() + { + panic_span = Some(macro_call.span); + } + + // check for `unwrap` and `expect` for both `Option` and `Result` + if let Some(arglists) = method_chain_args(expr, &["unwrap"]).or_else(|| method_chain_args(expr, &["expect"])) + && let receiver_ty = typeck.expr_ty(arglists[0].0).peel_refs() + && matches!( + get_type_diagnostic_name(cx, receiver_ty), + Some(sym::Option | sym::Result) + ) + && !fulfill_or_allowed(cx, MISSING_PANICS_DOC, [expr.hir_id]) + && panic_span.is_none() + { + panic_span = Some(expr.span); + } + + // Visit all nodes to fulfill any `#[expect]`s after the first linted panic + ControlFlow::::Continue(()) + }); + panic_span +} diff --git a/clippy_lints/src/doc/mod.rs b/clippy_lints/src/doc/mod.rs index 36fd396cc1df8..ab77edf1147cb 100644 --- a/clippy_lints/src/doc/mod.rs +++ b/clippy_lints/src/doc/mod.rs @@ -3,11 +3,8 @@ use clippy_config::Conf; use clippy_utils::attrs::is_doc_hidden; use clippy_utils::diagnostics::{span_lint, span_lint_and_help, span_lint_and_then}; -use clippy_utils::macros::{is_panic, root_macro_call_first_node}; use clippy_utils::source::snippet_opt; -use clippy_utils::ty::is_type_diagnostic_item; -use clippy_utils::visitors::Visitable; -use clippy_utils::{is_entrypoint_fn, is_trait_impl_item, method_chain_args}; +use clippy_utils::{is_entrypoint_fn, is_trait_impl_item}; use pulldown_cmark::Event::{ Code, DisplayMath, End, FootnoteReference, HardBreak, Html, InlineHtml, InlineMath, Rule, SoftBreak, Start, TaskListMarker, Text, @@ -16,18 +13,15 @@ use pulldown_cmark::Tag::{BlockQuote, CodeBlock, FootnoteDefinition, Heading, It use pulldown_cmark::{BrokenLink, CodeBlockKind, CowStr, Options, TagEnd}; use rustc_data_structures::fx::FxHashSet; use rustc_errors::Applicability; -use rustc_hir::intravisit::{self, Visitor}; -use rustc_hir::{AnonConst, Attribute, Expr, ImplItemKind, ItemKind, Node, Safety, TraitItemKind}; +use rustc_hir::{Attribute, ImplItemKind, ItemKind, Node, Safety, TraitItemKind}; use rustc_lint::{EarlyContext, EarlyLintPass, LateContext, LateLintPass, LintContext}; -use rustc_middle::hir::nested_filter; -use rustc_middle::ty; use rustc_resolve::rustdoc::{ DocFragment, add_doc_fragment, attrs_to_doc_fragments, main_body_opts, source_span_for_markdown_range, span_of_fragments, }; use rustc_session::impl_lint_pass; +use rustc_span::Span; use rustc_span::edition::Edition; -use rustc_span::{Span, sym}; use std::ops::Range; use url::Url; @@ -194,6 +188,19 @@ declare_clippy_lint! { /// } /// } /// ``` + /// + /// Individual panics within a function can be ignored with `#[expect]` or + /// `#[allow]`: + /// + /// ```no_run + /// # use std::num::NonZeroUsize; + /// pub fn will_not_panic(x: usize) { + /// #[expect(clippy::missing_panics_doc, reason = "infallible")] + /// let y = NonZeroUsize::new(1).unwrap(); + /// + /// // If any panics are added in the future the lint will still catch them + /// } + /// ``` #[clippy::version = "1.51.0"] pub MISSING_PANICS_DOC, pedantic, @@ -657,20 +664,16 @@ impl<'tcx> LateLintPass<'tcx> for Documentation { self.check_private_items, ); match item.kind { - ItemKind::Fn { sig, body: body_id, .. } => { + ItemKind::Fn { sig, body, .. } => { if !(is_entrypoint_fn(cx, item.owner_id.to_def_id()) || item.span.in_external_macro(cx.tcx.sess.source_map())) { - let body = cx.tcx.hir_body(body_id); - - let panic_info = FindPanicUnwrap::find_span(cx, cx.tcx.typeck(item.owner_id), body.value); missing_headers::check( cx, item.owner_id, sig, headers, - Some(body_id), - panic_info, + Some(body), self.check_private_items, ); } @@ -697,15 +700,7 @@ impl<'tcx> LateLintPass<'tcx> for Documentation { if let TraitItemKind::Fn(sig, ..) = trait_item.kind && !trait_item.span.in_external_macro(cx.tcx.sess.source_map()) { - missing_headers::check( - cx, - trait_item.owner_id, - sig, - headers, - None, - None, - self.check_private_items, - ); + missing_headers::check(cx, trait_item.owner_id, sig, headers, None, self.check_private_items); } }, Node::ImplItem(impl_item) => { @@ -713,16 +708,12 @@ impl<'tcx> LateLintPass<'tcx> for Documentation { && !impl_item.span.in_external_macro(cx.tcx.sess.source_map()) && !is_trait_impl_item(cx, impl_item.hir_id()) { - let body = cx.tcx.hir_body(body_id); - - let panic_span = FindPanicUnwrap::find_span(cx, cx.tcx.typeck(impl_item.owner_id), body.value); missing_headers::check( cx, impl_item.owner_id, sig, headers, Some(body_id), - panic_span, self.check_private_items, ); } @@ -880,19 +871,18 @@ fn check_for_code_clusters<'a, Events: Iterator{}", doc[start..end].replace('`', "")); - diag.span_suggestion_verbose( - span, - "wrap the entire group in `` tags", - sugg, - Applicability::MaybeIncorrect, - ); - diag.help("separate code snippets will be shown with a gap"); - }); - } + span_lint_and_then(cx, DOC_LINK_CODE, span, "code link adjacent to code text", |diag| { + let sugg = format!("{}", doc[start..end].replace('`', "")); + diag.span_suggestion_verbose( + span, + "wrap the entire group in `` tags", + sugg, + Applicability::MaybeIncorrect, + ); + diag.help("separate code snippets will be shown with a gap"); + }); } code_includes_link = false; code_starts_at = None; @@ -1169,72 +1159,6 @@ fn check_doc<'a, Events: Iterator, Range { - cx: &'a LateContext<'tcx>, - is_const: bool, - panic_span: Option, - typeck_results: &'tcx ty::TypeckResults<'tcx>, -} - -impl<'a, 'tcx> FindPanicUnwrap<'a, 'tcx> { - pub fn find_span( - cx: &'a LateContext<'tcx>, - typeck_results: &'tcx ty::TypeckResults<'tcx>, - body: impl Visitable<'tcx>, - ) -> Option<(Span, bool)> { - let mut vis = Self { - cx, - is_const: false, - panic_span: None, - typeck_results, - }; - body.visit(&mut vis); - vis.panic_span.map(|el| (el, vis.is_const)) - } -} - -impl<'tcx> Visitor<'tcx> for FindPanicUnwrap<'_, 'tcx> { - type NestedFilter = nested_filter::OnlyBodies; - - fn visit_expr(&mut self, expr: &'tcx Expr<'_>) { - if self.panic_span.is_some() { - return; - } - - if let Some(macro_call) = root_macro_call_first_node(self.cx, expr) { - if is_panic(self.cx, macro_call.def_id) - || matches!( - self.cx.tcx.item_name(macro_call.def_id).as_str(), - "assert" | "assert_eq" | "assert_ne" - ) - { - self.is_const = self.cx.tcx.hir_is_inside_const_context(expr.hir_id); - self.panic_span = Some(macro_call.span); - } - } - - // check for `unwrap` and `expect` for both `Option` and `Result` - if let Some(arglists) = method_chain_args(expr, &["unwrap"]).or(method_chain_args(expr, &["expect"])) { - let receiver_ty = self.typeck_results.expr_ty(arglists[0].0).peel_refs(); - if is_type_diagnostic_item(self.cx, receiver_ty, sym::Option) - || is_type_diagnostic_item(self.cx, receiver_ty, sym::Result) - { - self.panic_span = Some(expr.span); - } - } - - // and check sub-expressions - intravisit::walk_expr(self, expr); - } - - // Panics in const blocks will cause compilation to fail. - fn visit_anon_const(&mut self, _: &'tcx AnonConst) {} - - fn maybe_tcx(&mut self) -> Self::MaybeTyCtxt { - self.cx.tcx - } -} - #[expect(clippy::range_plus_one)] // inclusive ranges aren't the same type fn looks_like_refdef(doc: &str, range: Range) -> Option> { if range.end < range.start { diff --git a/clippy_lints/src/doc/needless_doctest_main.rs b/clippy_lints/src/doc/needless_doctest_main.rs index bf549dcdb5063..ec4538039a918 100644 --- a/clippy_lints/src/doc/needless_doctest_main.rs +++ b/clippy_lints/src/doc/needless_doctest_main.rs @@ -64,7 +64,10 @@ pub fn check( match parser.parse_item(ForceCollect::No) { Ok(Some(item)) => match &item.kind { ItemKind::Fn(box Fn { - ident, sig, body: Some(block), .. + ident, + sig, + body: Some(block), + .. }) if ident.name == sym::main => { if !ignore { get_test_spans(&item, *ident, &mut test_attr_spans); diff --git a/clippy_lints/src/drop_forget_ref.rs b/clippy_lints/src/drop_forget_ref.rs index 617982f4da30f..5c360ce6a5f7e 100644 --- a/clippy_lints/src/drop_forget_ref.rs +++ b/clippy_lints/src/drop_forget_ref.rs @@ -144,10 +144,10 @@ impl<'tcx> LateLintPass<'tcx> for DropForgetRef { // .. // } fn is_single_call_in_arm<'tcx>(cx: &LateContext<'tcx>, arg: &'tcx Expr<'_>, drop_expr: &'tcx Expr<'_>) -> bool { - if matches!(arg.kind, ExprKind::Call(..) | ExprKind::MethodCall(..)) { - if let Node::Arm(Arm { body, .. }) = cx.tcx.parent_hir_node(drop_expr.hir_id) { - return body.hir_id == drop_expr.hir_id; - } + if matches!(arg.kind, ExprKind::Call(..) | ExprKind::MethodCall(..)) + && let Node::Arm(Arm { body, .. }) = cx.tcx.parent_hir_node(drop_expr.hir_id) + { + return body.hir_id == drop_expr.hir_id; } false } diff --git a/clippy_lints/src/empty_line_after.rs b/clippy_lints/src/empty_line_after.rs index c67dcd3c82b50..0c5f8bbf4ca53 100644 --- a/clippy_lints/src/empty_line_after.rs +++ b/clippy_lints/src/empty_line_after.rs @@ -1,3 +1,5 @@ +use std::borrow::Cow; + use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::{SpanRangeExt, snippet_indent}; use clippy_utils::tokenize_with_text; @@ -89,7 +91,7 @@ declare_clippy_lint! { #[derive(Debug)] struct ItemInfo { kind: &'static str, - name: Symbol, + name: Option, span: Span, mod_items: Option, } @@ -315,8 +317,12 @@ impl EmptyLineAfter { for stop in gaps.iter().flat_map(|gap| gap.prev_chunk) { stop.comment_out(cx, &mut suggestions); } + let name = match info.name { + Some(name) => format!("{} `{name}`", info.kind).into(), + None => Cow::from("the following item"), + }; diag.multipart_suggestion_verbose( - format!("if the doc comment should not document `{}` comment it out", info.name), + format!("if the doc comment should not document {name} then comment it out"), suggestions, Applicability::MaybeIncorrect, ); @@ -381,13 +387,10 @@ impl EmptyLineAfter { ) { self.items.push(ItemInfo { kind: kind.descr(), - // FIXME: this `sym::empty` can be leaked, see - // https://github.com/rust-lang/rust/pull/138740#discussion_r2021979899 - name: if let Some(ident) = ident { ident.name } else { kw::Empty }, - span: if let Some(ident) = ident { - span.with_hi(ident.span.hi()) - } else { - span.with_hi(span.lo()) + name: ident.map(|ident| ident.name), + span: match ident { + Some(ident) => span.with_hi(ident.span.hi()), + None => span.shrink_to_lo(), }, mod_items: match kind { ItemKind::Mod(_, _, ModKind::Loaded(items, _, _, _)) => items @@ -447,7 +450,7 @@ impl EarlyLintPass for EmptyLineAfter { fn check_crate(&mut self, _: &EarlyContext<'_>, krate: &Crate) { self.items.push(ItemInfo { kind: "crate", - name: kw::Crate, + name: Some(kw::Crate), span: krate.spans.inner_span.with_hi(krate.spans.inner_span.lo()), mod_items: krate .items diff --git a/clippy_lints/src/empty_with_brackets.rs b/clippy_lints/src/empty_with_brackets.rs index 7d87f04fef9d8..a38d6df89f2b9 100644 --- a/clippy_lints/src/empty_with_brackets.rs +++ b/clippy_lints/src/empty_with_brackets.rs @@ -1,10 +1,15 @@ -use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::source::snippet_opt; -use rustc_ast::ast::{Item, ItemKind, Variant, VariantData}; +use clippy_utils::attrs::span_contains_cfg; +use clippy_utils::diagnostics::{span_lint_and_then, span_lint_hir_and_then}; +use rustc_data_structures::fx::FxIndexMap; use rustc_errors::Applicability; -use rustc_lexer::TokenKind; -use rustc_lint::{EarlyContext, EarlyLintPass}; -use rustc_session::declare_lint_pass; +use rustc_hir::def::CtorOf; +use rustc_hir::def::DefKind::Ctor; +use rustc_hir::def::Res::Def; +use rustc_hir::def_id::LocalDefId; +use rustc_hir::{Expr, ExprKind, Item, ItemKind, Node, Path, QPath, Variant, VariantData}; +use rustc_lint::{LateContext, LateLintPass}; +use rustc_middle::ty::TyCtxt; +use rustc_session::impl_lint_pass; use rustc_span::Span; declare_clippy_lint! { @@ -70,10 +75,23 @@ declare_clippy_lint! { "finds enum variants with empty brackets" } -declare_lint_pass!(EmptyWithBrackets => [EMPTY_STRUCTS_WITH_BRACKETS, EMPTY_ENUM_VARIANTS_WITH_BRACKETS]); +#[derive(Debug)] +enum Usage { + Unused { redundant_use_sites: Vec }, + Used, + NoDefinition { redundant_use_sites: Vec }, +} + +#[derive(Default)] +pub struct EmptyWithBrackets { + // Value holds `Usage::Used` if the empty tuple variant was used as a function + empty_tuple_enum_variants: FxIndexMap, +} + +impl_lint_pass!(EmptyWithBrackets => [EMPTY_STRUCTS_WITH_BRACKETS, EMPTY_ENUM_VARIANTS_WITH_BRACKETS]); -impl EarlyLintPass for EmptyWithBrackets { - fn check_item(&mut self, cx: &EarlyContext<'_>, item: &Item) { +impl LateLintPass<'_> for EmptyWithBrackets { + fn check_item(&mut self, cx: &LateContext<'_>, item: &Item<'_>) { if let ItemKind::Struct(ident, var_data, _) = &item.kind && has_brackets(var_data) && let span_after_ident = item.span.with_lo(ident.span.hi()) @@ -96,70 +114,175 @@ impl EarlyLintPass for EmptyWithBrackets { } } - fn check_variant(&mut self, cx: &EarlyContext<'_>, variant: &Variant) { + fn check_variant(&mut self, cx: &LateContext<'_>, variant: &Variant<'_>) { + // the span of the parentheses/braces let span_after_ident = variant.span.with_lo(variant.ident.span.hi()); - if has_brackets(&variant.data) && has_no_fields(cx, &variant.data, span_after_ident) { - span_lint_and_then( + if has_no_fields(cx, &variant.data, span_after_ident) { + match variant.data { + VariantData::Struct { .. } => { + // Empty struct variants can be linted immediately + span_lint_and_then( + cx, + EMPTY_ENUM_VARIANTS_WITH_BRACKETS, + span_after_ident, + "enum variant has empty brackets", + |diagnostic| { + diagnostic.span_suggestion_hidden( + span_after_ident, + "remove the brackets", + "", + Applicability::MaybeIncorrect, + ); + }, + ); + }, + VariantData::Tuple(.., local_def_id) => { + // Don't lint reachable tuple enums + if cx.effective_visibilities.is_reachable(variant.def_id) { + return; + } + if let Some(entry) = self.empty_tuple_enum_variants.get_mut(&local_def_id) { + // empty_tuple_enum_variants contains Usage::NoDefinition if the variant was called before the + // definition was encountered. Now that there's a definition, convert it + // to Usage::Unused. + if let Usage::NoDefinition { redundant_use_sites } = entry { + *entry = Usage::Unused { + redundant_use_sites: redundant_use_sites.clone(), + }; + } + } else { + self.empty_tuple_enum_variants.insert( + local_def_id, + Usage::Unused { + redundant_use_sites: vec![], + }, + ); + } + }, + VariantData::Unit(..) => {}, + } + } + } + + fn check_expr(&mut self, cx: &LateContext<'_>, expr: &Expr<'_>) { + if let Some(def_id) = check_expr_for_enum_as_function(expr) { + if let Some(parentheses_span) = call_parentheses_span(cx.tcx, expr) { + // Do not count expressions from macro expansion as a redundant use site. + if expr.span.from_expansion() { + return; + } + match self.empty_tuple_enum_variants.get_mut(&def_id) { + Some( + &mut (Usage::Unused { + ref mut redundant_use_sites, + } + | Usage::NoDefinition { + ref mut redundant_use_sites, + }), + ) => { + redundant_use_sites.push(parentheses_span); + }, + None => { + // The variant isn't in the IndexMap which means its definition wasn't encountered yet. + self.empty_tuple_enum_variants.insert( + def_id, + Usage::NoDefinition { + redundant_use_sites: vec![parentheses_span], + }, + ); + }, + _ => {}, + } + } else { + // The parentheses are not redundant. + self.empty_tuple_enum_variants.insert(def_id, Usage::Used); + } + } + } + + fn check_crate_post(&mut self, cx: &LateContext<'_>) { + for (local_def_id, usage) in &self.empty_tuple_enum_variants { + // Ignore all variants with Usage::Used or Usage::NoDefinition + let Usage::Unused { redundant_use_sites } = usage else { + continue; + }; + // Attempt to fetch the Variant from LocalDefId. + let Node::Variant(variant) = cx.tcx.hir_node( + cx.tcx + .local_def_id_to_hir_id(cx.tcx.parent(local_def_id.to_def_id()).expect_local()), + ) else { + continue; + }; + // Span of the parentheses in variant definition + let span = variant.span.with_lo(variant.ident.span.hi()); + span_lint_hir_and_then( cx, EMPTY_ENUM_VARIANTS_WITH_BRACKETS, - span_after_ident, + variant.hir_id, + span, "enum variant has empty brackets", |diagnostic| { - diagnostic.span_suggestion_hidden( - span_after_ident, - "remove the brackets", - "", - Applicability::MaybeIncorrect, - ); + if redundant_use_sites.is_empty() { + // If there's no redundant use sites, the definition is the only place to modify. + diagnostic.span_suggestion_hidden( + span, + "remove the brackets", + "", + Applicability::MaybeIncorrect, + ); + } else { + let mut parentheses_spans: Vec<_> = + redundant_use_sites.iter().map(|span| (*span, String::new())).collect(); + parentheses_spans.push((span, String::new())); + diagnostic.multipart_suggestion( + "remove the brackets", + parentheses_spans, + Applicability::MaybeIncorrect, + ); + } }, ); } } } -fn has_no_ident_token(braces_span_str: &str) -> bool { - !rustc_lexer::tokenize(braces_span_str).any(|t| t.kind == TokenKind::Ident) +fn has_brackets(var_data: &VariantData<'_>) -> bool { + !matches!(var_data, VariantData::Unit(..)) } -fn has_brackets(var_data: &VariantData) -> bool { - !matches!(var_data, VariantData::Unit(_)) -} - -fn has_no_fields(cx: &EarlyContext<'_>, var_data: &VariantData, braces_span: Span) -> bool { - if !var_data.fields().is_empty() { - return false; - } - +fn has_no_fields(cx: &LateContext<'_>, var_data: &VariantData<'_>, braces_span: Span) -> bool { + var_data.fields().is_empty() && // there might still be field declarations hidden from the AST // (conditionally compiled code using #[cfg(..)]) - - let Some(braces_span_str) = snippet_opt(cx, braces_span) else { - return false; - }; - - has_no_ident_token(braces_span_str.as_ref()) + !span_contains_cfg(cx, braces_span) } -#[cfg(test)] -mod unit_test { - use super::*; - - #[test] - fn test_has_no_ident_token() { - let input = "{ field: u8 }"; - assert!(!has_no_ident_token(input)); - - let input = "(u8, String);"; - assert!(!has_no_ident_token(input)); - - let input = " { - // test = 5 - } - "; - assert!(has_no_ident_token(input)); +// If expression HIR ID and callee HIR ID are same, returns the span of the parentheses, else, +// returns None. +fn call_parentheses_span(tcx: TyCtxt<'_>, expr: &Expr<'_>) -> Option { + if let Node::Expr(parent) = tcx.parent_hir_node(expr.hir_id) + && let ExprKind::Call(callee, ..) = parent.kind + && callee.hir_id == expr.hir_id + { + Some(parent.span.with_lo(expr.span.hi())) + } else { + None + } +} - let input = " ();"; - assert!(has_no_ident_token(input)); +// Returns the LocalDefId of the variant being called as a function if it exists. +fn check_expr_for_enum_as_function(expr: &Expr<'_>) -> Option { + if let ExprKind::Path(QPath::Resolved( + _, + Path { + res: Def(Ctor(CtorOf::Variant, _), def_id), + .. + }, + )) = expr.kind + { + def_id.as_local() + } else { + None } } diff --git a/clippy_lints/src/entry.rs b/clippy_lints/src/entry.rs index dcfee0b6d3c62..182cb4e46d2bd 100644 --- a/clippy_lints/src/entry.rs +++ b/clippy_lints/src/entry.rs @@ -95,14 +95,13 @@ impl<'tcx> LateLintPass<'tcx> for HashMapPass { return; }; - if then_search.is_key_used_and_no_copy || else_search.is_key_used_and_no_copy { - span_lint(cx, MAP_ENTRY, expr.span, lint_msg); - return; - } - if then_search.edits.is_empty() && else_search.edits.is_empty() { // No insertions return; + } else if then_search.is_key_used_and_no_copy || else_search.is_key_used_and_no_copy { + // If there are other uses of the key, and the key is not copy, + // we cannot perform a fix automatically, but continue to emit a lint. + None } else if then_search.edits.is_empty() || else_search.edits.is_empty() { // if .. { insert } else { .. } or if .. { .. } else { insert } let ((then_str, entry_kind), else_str) = match (else_search.edits.is_empty(), contains_expr.negated) { @@ -123,10 +122,10 @@ impl<'tcx> LateLintPass<'tcx> for HashMapPass { snippet_with_applicability(cx, then_expr.span, "{ .. }", &mut app), ), }; - format!( + Some(format!( "if let {}::{entry_kind} = {map_str}.entry({key_str}) {then_str} else {else_str}", map_ty.entry_path(), - ) + )) } else { // if .. { insert } else { insert } let ((then_str, then_entry), (else_str, else_entry)) = if contains_expr.negated { @@ -142,13 +141,13 @@ impl<'tcx> LateLintPass<'tcx> for HashMapPass { }; let indent_str = snippet_indent(cx, expr.span); let indent_str = indent_str.as_deref().unwrap_or(""); - format!( + Some(format!( "match {map_str}.entry({key_str}) {{\n{indent_str} {entry}::{then_entry} => {}\n\ {indent_str} {entry}::{else_entry} => {}\n{indent_str}}}", reindent_multiline(&then_str, true, Some(4 + indent_str.len())), reindent_multiline(&else_str, true, Some(4 + indent_str.len())), entry = map_ty.entry_path(), - ) + )) } } else { if then_search.edits.is_empty() { @@ -163,17 +162,17 @@ impl<'tcx> LateLintPass<'tcx> for HashMapPass { } else { then_search.snippet_occupied(cx, then_expr.span, &mut app) }; - format!( + Some(format!( "if let {}::{entry_kind} = {map_str}.entry({key_str}) {body_str}", map_ty.entry_path(), - ) + )) } else if let Some(insertion) = then_search.as_single_insertion() { let value_str = snippet_with_context(cx, insertion.value.span, then_expr.span.ctxt(), "..", &mut app).0; if contains_expr.negated { if insertion.value.can_have_side_effects() { - format!("{map_str}.entry({key_str}).or_insert_with(|| {value_str});") + Some(format!("{map_str}.entry({key_str}).or_insert_with(|| {value_str});")) } else { - format!("{map_str}.entry({key_str}).or_insert({value_str});") + Some(format!("{map_str}.entry({key_str}).or_insert({value_str});")) } } else { // TODO: suggest using `if let Some(v) = map.get_mut(k) { .. }` here. @@ -183,7 +182,7 @@ impl<'tcx> LateLintPass<'tcx> for HashMapPass { } else { let block_str = then_search.snippet_closure(cx, then_expr.span, &mut app); if contains_expr.negated { - format!("{map_str}.entry({key_str}).or_insert_with(|| {block_str});") + Some(format!("{map_str}.entry({key_str}).or_insert_with(|| {block_str});")) } else { // TODO: suggest using `if let Some(v) = map.get_mut(k) { .. }` here. // This would need to be a different lint. @@ -192,7 +191,11 @@ impl<'tcx> LateLintPass<'tcx> for HashMapPass { } }; - span_lint_and_sugg(cx, MAP_ENTRY, expr.span, lint_msg, "try", sugg, app); + if let Some(sugg) = sugg { + span_lint_and_sugg(cx, MAP_ENTRY, expr.span, lint_msg, "try", sugg, app); + } else { + span_lint(cx, MAP_ENTRY, expr.span, lint_msg); + } } } diff --git a/clippy_lints/src/enum_clike.rs b/clippy_lints/src/enum_clike.rs index f01b5c840d290..ec81294624efa 100644 --- a/clippy_lints/src/enum_clike.rs +++ b/clippy_lints/src/enum_clike.rs @@ -49,10 +49,10 @@ impl<'tcx> LateLintPass<'tcx> for UnportableVariant { .ok() .map(|val| rustc_middle::mir::Const::from_value(val, ty)); if let Some(Constant::Int(val)) = constant.and_then(|c| mir_to_const(cx.tcx, c)) { - if let ty::Adt(adt, _) = ty.kind() { - if adt.is_enum() { - ty = adt.repr().discr_type().to_ty(cx.tcx); - } + if let ty::Adt(adt, _) = ty.kind() + && adt.is_enum() + { + ty = adt.repr().discr_type().to_ty(cx.tcx); } match ty.kind() { ty::Int(IntTy::Isize) => { diff --git a/clippy_lints/src/escape.rs b/clippy_lints/src/escape.rs index e248f08789b2d..2cb3b32babe89 100644 --- a/clippy_lints/src/escape.rs +++ b/clippy_lints/src/escape.rs @@ -72,10 +72,10 @@ impl<'tcx> LateLintPass<'tcx> for BoxedLocal { _: Span, fn_def_id: LocalDefId, ) { - if let Some(header) = fn_kind.header() { - if header.abi != ExternAbi::Rust { - return; - } + if let Some(header) = fn_kind.header() + && header.abi != ExternAbi::Rust + { + return; } let parent_id = cx @@ -93,12 +93,11 @@ impl<'tcx> LateLintPass<'tcx> for BoxedLocal { // find `self` ty for this trait if relevant if let ItemKind::Trait(_, _, _, _, _, items) = item.kind { for trait_item in items { - if trait_item.id.owner_id.def_id == fn_def_id { + if trait_item.id.owner_id.def_id == fn_def_id // be sure we have `self` parameter in this function - if trait_item.kind == (AssocItemKind::Fn { has_self: true }) { - trait_self_ty = - Some(TraitRef::identity(cx.tcx, trait_item.id.owner_id.to_def_id()).self_ty()); - } + && trait_item.kind == (AssocItemKind::Fn { has_self: true }) + { + trait_self_ty = Some(TraitRef::identity(cx.tcx, trait_item.id.owner_id.to_def_id()).self_ty()); } } } @@ -142,22 +141,22 @@ fn is_argument(tcx: TyCtxt<'_>, id: HirId) -> bool { impl<'tcx> Delegate<'tcx> for EscapeDelegate<'_, 'tcx> { fn consume(&mut self, cmt: &PlaceWithHirId<'tcx>, _: HirId) { - if cmt.place.projections.is_empty() { - if let PlaceBase::Local(lid) = cmt.place.base { - // FIXME(rust/#120456) - is `swap_remove` correct? - self.set.swap_remove(&lid); - } + if cmt.place.projections.is_empty() + && let PlaceBase::Local(lid) = cmt.place.base + { + // FIXME(rust/#120456) - is `swap_remove` correct? + self.set.swap_remove(&lid); } } fn use_cloned(&mut self, _: &PlaceWithHirId<'tcx>, _: HirId) {} fn borrow(&mut self, cmt: &PlaceWithHirId<'tcx>, _: HirId, _: ty::BorrowKind) { - if cmt.place.projections.is_empty() { - if let PlaceBase::Local(lid) = cmt.place.base { - // FIXME(rust/#120456) - is `swap_remove` correct? - self.set.swap_remove(&lid); - } + if cmt.place.projections.is_empty() + && let PlaceBase::Local(lid) = cmt.place.base + { + // FIXME(rust/#120456) - is `swap_remove` correct? + self.set.swap_remove(&lid); } } @@ -171,10 +170,11 @@ impl<'tcx> Delegate<'tcx> for EscapeDelegate<'_, 'tcx> { // skip if there is a `self` parameter binding to a type // that contains `Self` (i.e.: `self: Box`), see #4804 - if let Some(trait_self_ty) = self.trait_self_ty { - if self.cx.tcx.hir_name(cmt.hir_id) == kw::SelfLower && cmt.place.ty().contains(trait_self_ty) { - return; - } + if let Some(trait_self_ty) = self.trait_self_ty + && self.cx.tcx.hir_name(cmt.hir_id) == kw::SelfLower + && cmt.place.ty().contains(trait_self_ty) + { + return; } if is_non_trait_box(cmt.place.ty()) && !self.is_large_box(cmt.place.ty()) { diff --git a/clippy_lints/src/fallible_impl_from.rs b/clippy_lints/src/fallible_impl_from.rs index f67d38d932b9a..c868b782f43c3 100644 --- a/clippy_lints/src/fallible_impl_from.rs +++ b/clippy_lints/src/fallible_impl_from.rs @@ -75,10 +75,10 @@ fn lint_impl_body(cx: &LateContext<'_>, impl_span: Span, impl_items: &[hir::Impl impl<'tcx> Visitor<'tcx> for FindPanicUnwrap<'_, 'tcx> { fn visit_expr(&mut self, expr: &'tcx Expr<'_>) { - if let Some(macro_call) = root_macro_call_first_node(self.lcx, expr) { - if is_panic(self.lcx, macro_call.def_id) { - self.result.push(expr.span); - } + if let Some(macro_call) = root_macro_call_first_node(self.lcx, expr) + && is_panic(self.lcx, macro_call.def_id) + { + self.result.push(expr.span); } // check for `unwrap` diff --git a/clippy_lints/src/floating_point_arithmetic.rs b/clippy_lints/src/floating_point_arithmetic.rs index daa199779e3cb..d5f0659f8427f 100644 --- a/clippy_lints/src/floating_point_arithmetic.rs +++ b/clippy_lints/src/floating_point_arithmetic.rs @@ -154,7 +154,7 @@ fn prepare_receiver_sugg<'a>(cx: &LateContext<'_>, mut expr: &'a Expr<'a>) -> Su }; } - suggestion.maybe_par() + suggestion.maybe_paren() } fn check_log_base(cx: &LateContext<'_>, expr: &Expr<'_>, receiver: &Expr<'_>, args: &[Expr<'_>]) { @@ -165,7 +165,7 @@ fn check_log_base(cx: &LateContext<'_>, expr: &Expr<'_>, receiver: &Expr<'_>, ar expr.span, "logarithm for bases 2, 10 and e can be computed more accurately", "consider using", - format!("{}.{method}()", Sugg::hir(cx, receiver, "..").maybe_par()), + format!("{}.{method}()", Sugg::hir(cx, receiver, "..").maybe_paren()), Applicability::MachineApplicable, ); } @@ -228,24 +228,24 @@ fn get_integer_from_float_constant(value: &Constant<'_>) -> Option { fn check_powf(cx: &LateContext<'_>, expr: &Expr<'_>, receiver: &Expr<'_>, args: &[Expr<'_>]) { // Check receiver - if let Some(value) = ConstEvalCtxt::new(cx).eval(receiver) { - if let Some(method) = if F32(f32_consts::E) == value || F64(f64_consts::E) == value { + if let Some(value) = ConstEvalCtxt::new(cx).eval(receiver) + && let Some(method) = if F32(f32_consts::E) == value || F64(f64_consts::E) == value { Some("exp") } else if F32(2.0) == value || F64(2.0) == value { Some("exp2") } else { None - } { - span_lint_and_sugg( - cx, - SUBOPTIMAL_FLOPS, - expr.span, - "exponent for bases 2 and e can be computed more accurately", - "consider using", - format!("{}.{method}()", prepare_receiver_sugg(cx, &args[0])), - Applicability::MachineApplicable, - ); } + { + span_lint_and_sugg( + cx, + SUBOPTIMAL_FLOPS, + expr.span, + "exponent for bases 2 and e can be computed more accurately", + "consider using", + format!("{}.{method}()", prepare_receiver_sugg(cx, &args[0])), + Applicability::MachineApplicable, + ); } // Check argument @@ -254,13 +254,13 @@ fn check_powf(cx: &LateContext<'_>, expr: &Expr<'_>, receiver: &Expr<'_>, args: ( SUBOPTIMAL_FLOPS, "square-root of a number can be computed more efficiently and accurately", - format!("{}.sqrt()", Sugg::hir(cx, receiver, "..").maybe_par()), + format!("{}.sqrt()", Sugg::hir(cx, receiver, "..").maybe_paren()), ) } else if F32(1.0 / 3.0) == value || F64(1.0 / 3.0) == value { ( IMPRECISE_FLOPS, "cube-root of a number can be computed more accurately", - format!("{}.cbrt()", Sugg::hir(cx, receiver, "..").maybe_par()), + format!("{}.cbrt()", Sugg::hir(cx, receiver, "..").maybe_paren()), ) } else if let Some(exponent) = get_integer_from_float_constant(&value) { ( @@ -268,7 +268,7 @@ fn check_powf(cx: &LateContext<'_>, expr: &Expr<'_>, receiver: &Expr<'_>, args: "exponentiation with integer powers can be computed more efficiently", format!( "{}.powi({})", - Sugg::hir(cx, receiver, "..").maybe_par(), + Sugg::hir(cx, receiver, "..").maybe_paren(), numeric_literal::format(&exponent.to_string(), None, false) ), ) @@ -289,55 +289,53 @@ fn check_powf(cx: &LateContext<'_>, expr: &Expr<'_>, receiver: &Expr<'_>, args: } fn check_powi(cx: &LateContext<'_>, expr: &Expr<'_>, receiver: &Expr<'_>, args: &[Expr<'_>]) { - if let Some(value) = ConstEvalCtxt::new(cx).eval(&args[0]) { - if value == Int(2) { - if let Some(parent) = get_parent_expr(cx, expr) { - if let Some(grandparent) = get_parent_expr(cx, parent) { - if let ExprKind::MethodCall(PathSegment { ident: method_name, .. }, receiver, ..) = grandparent.kind - { - if method_name.as_str() == "sqrt" && detect_hypot(cx, receiver).is_some() { - return; - } - } - } + if let Some(value) = ConstEvalCtxt::new(cx).eval(&args[0]) + && value == Int(2) + && let Some(parent) = get_parent_expr(cx, expr) + { + if let Some(grandparent) = get_parent_expr(cx, parent) + && let ExprKind::MethodCall(PathSegment { ident: method_name, .. }, receiver, ..) = grandparent.kind + && method_name.as_str() == "sqrt" + && detect_hypot(cx, receiver).is_some() + { + return; + } - if let ExprKind::Binary( - Spanned { - node: op @ (BinOpKind::Add | BinOpKind::Sub), - .. - }, - lhs, - rhs, - ) = parent.kind - { - let other_addend = if lhs.hir_id == expr.hir_id { rhs } else { lhs }; - - // Negate expr if original code has subtraction and expr is on the right side - let maybe_neg_sugg = |expr, hir_id| { - let sugg = Sugg::hir(cx, expr, ".."); - if matches!(op, BinOpKind::Sub) && hir_id == rhs.hir_id { - -sugg - } else { - sugg - } - }; - - span_lint_and_sugg( - cx, - SUBOPTIMAL_FLOPS, - parent.span, - "multiply and add expressions can be calculated more efficiently and accurately", - "consider using", - format!( - "{}.mul_add({}, {})", - Sugg::hir(cx, receiver, "..").maybe_par(), - maybe_neg_sugg(receiver, expr.hir_id), - maybe_neg_sugg(other_addend, other_addend.hir_id), - ), - Applicability::MachineApplicable, - ); + if let ExprKind::Binary( + Spanned { + node: op @ (BinOpKind::Add | BinOpKind::Sub), + .. + }, + lhs, + rhs, + ) = parent.kind + { + let other_addend = if lhs.hir_id == expr.hir_id { rhs } else { lhs }; + + // Negate expr if original code has subtraction and expr is on the right side + let maybe_neg_sugg = |expr, hir_id| { + let sugg = Sugg::hir(cx, expr, ".."); + if matches!(op, BinOpKind::Sub) && hir_id == rhs.hir_id { + -sugg + } else { + sugg } - } + }; + + span_lint_and_sugg( + cx, + SUBOPTIMAL_FLOPS, + parent.span, + "multiply and add expressions can be calculated more efficiently and accurately", + "consider using", + format!( + "{}.mul_add({}, {})", + Sugg::hir(cx, receiver, "..").maybe_paren(), + maybe_neg_sugg(receiver, expr.hir_id), + maybe_neg_sugg(other_addend, other_addend.hir_id), + ), + Applicability::MachineApplicable, + ); } } } @@ -371,7 +369,7 @@ fn detect_hypot(cx: &LateContext<'_>, receiver: &Expr<'_>) -> Option { { return Some(format!( "{}.hypot({})", - Sugg::hir(cx, lmul_lhs, "..").maybe_par(), + Sugg::hir(cx, lmul_lhs, "..").maybe_paren(), Sugg::hir(cx, rmul_lhs, "..") )); } @@ -403,7 +401,7 @@ fn detect_hypot(cx: &LateContext<'_>, receiver: &Expr<'_>) -> Option { { return Some(format!( "{}.hypot({})", - Sugg::hir(cx, largs_0, "..").maybe_par(), + Sugg::hir(cx, largs_0, "..").maybe_paren(), Sugg::hir(cx, rargs_0, "..") )); } @@ -449,7 +447,7 @@ fn check_expm1(cx: &LateContext<'_>, expr: &Expr<'_>) { expr.span, "(e.pow(x) - 1) can be computed more accurately", "consider using", - format!("{}.exp_m1()", Sugg::hir(cx, self_arg, "..").maybe_par()), + format!("{}.exp_m1()", Sugg::hir(cx, self_arg, "..").maybe_paren()), Applicability::MachineApplicable, ); } @@ -483,12 +481,12 @@ fn check_mul_add(cx: &LateContext<'_>, expr: &Expr<'_>) { rhs, ) = &expr.kind { - if let Some(parent) = get_parent_expr(cx, expr) { - if let ExprKind::MethodCall(PathSegment { ident: method_name, .. }, receiver, ..) = parent.kind { - if method_name.as_str() == "sqrt" && detect_hypot(cx, receiver).is_some() { - return; - } - } + if let Some(parent) = get_parent_expr(cx, expr) + && let ExprKind::MethodCall(PathSegment { ident: method_name, .. }, receiver, ..) = parent.kind + && method_name.as_str() == "sqrt" + && detect_hypot(cx, receiver).is_some() + { + return; } let maybe_neg_sugg = |expr| { @@ -566,15 +564,15 @@ fn is_zero(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { /// If the two expressions are not negations of each other, then it /// returns None. fn are_negated<'a>(cx: &LateContext<'_>, expr1: &'a Expr<'a>, expr2: &'a Expr<'a>) -> Option<(bool, &'a Expr<'a>)> { - if let ExprKind::Unary(UnOp::Neg, expr1_negated) = &expr1.kind { - if eq_expr_value(cx, expr1_negated, expr2) { - return Some((false, expr2)); - } + if let ExprKind::Unary(UnOp::Neg, expr1_negated) = &expr1.kind + && eq_expr_value(cx, expr1_negated, expr2) + { + return Some((false, expr2)); } - if let ExprKind::Unary(UnOp::Neg, expr2_negated) = &expr2.kind { - if eq_expr_value(cx, expr1, expr2_negated) { - return Some((true, expr1)); - } + if let ExprKind::Unary(UnOp::Neg, expr2_negated) = &expr2.kind + && eq_expr_value(cx, expr1, expr2_negated) + { + return Some((true, expr1)); } None } @@ -591,11 +589,11 @@ fn check_custom_abs(cx: &LateContext<'_>, expr: &Expr<'_>) { { let positive_abs_sugg = ( "manual implementation of `abs` method", - format!("{}.abs()", Sugg::hir(cx, body, "..").maybe_par()), + format!("{}.abs()", Sugg::hir(cx, body, "..").maybe_paren()), ); let negative_abs_sugg = ( "manual implementation of negation of `abs` method", - format!("-{}.abs()", Sugg::hir(cx, body, "..").maybe_par()), + format!("-{}.abs()", Sugg::hir(cx, body, "..").maybe_paren()), ); let sugg = if is_testing_positive(cx, cond, body) { if if_expr_positive { @@ -672,7 +670,7 @@ fn check_log_division(cx: &LateContext<'_>, expr: &Expr<'_>) { "consider using", format!( "{}.log({})", - Sugg::hir(cx, largs_self, "..").maybe_par(), + Sugg::hir(cx, largs_self, "..").maybe_paren(), Sugg::hir(cx, rargs_self, ".."), ), Applicability::MachineApplicable, @@ -703,7 +701,7 @@ fn check_radians(cx: &LateContext<'_>, expr: &Expr<'_>) { if (F32(f32_consts::PI) == rvalue || F64(f64_consts::PI) == rvalue) && (F32(180_f32) == lvalue || F64(180_f64) == lvalue) { - let mut proposal = format!("{}.to_degrees()", Sugg::hir(cx, mul_lhs, "..").maybe_par()); + let mut proposal = format!("{}.to_degrees()", Sugg::hir(cx, mul_lhs, "..").maybe_paren()); if let ExprKind::Lit(literal) = mul_lhs.kind && let ast::LitKind::Float(ref value, float_type) = literal.node && float_type == ast::LitFloatType::Unsuffixed @@ -726,7 +724,7 @@ fn check_radians(cx: &LateContext<'_>, expr: &Expr<'_>) { } else if (F32(180_f32) == rvalue || F64(180_f64) == rvalue) && (F32(f32_consts::PI) == lvalue || F64(f64_consts::PI) == lvalue) { - let mut proposal = format!("{}.to_radians()", Sugg::hir(cx, mul_lhs, "..").maybe_par()); + let mut proposal = format!("{}.to_radians()", Sugg::hir(cx, mul_lhs, "..").maybe_paren()); if let ExprKind::Lit(literal) = mul_lhs.kind && let ast::LitKind::Float(ref value, float_type) = literal.node && float_type == ast::LitFloatType::Unsuffixed diff --git a/clippy_lints/src/format.rs b/clippy_lints/src/format.rs index 5e3f6b6a13707..94e66769eb265 100644 --- a/clippy_lints/src/format.rs +++ b/clippy_lints/src/format.rs @@ -94,7 +94,7 @@ impl<'tcx> LateLintPass<'tcx> for UselessFormat { .into_owned() } else { let sugg = Sugg::hir_with_context(cx, value, call_site.ctxt(), "", &mut applicability); - format!("{}.to_string()", sugg.maybe_par()) + format!("{}.to_string()", sugg.maybe_paren()) }; span_useless_format(cx, call_site, sugg, applicability); } diff --git a/clippy_lints/src/format_args.rs b/clippy_lints/src/format_args.rs index 06224f57c5c5b..8a3f8e1c5874d 100644 --- a/clippy_lints/src/format_args.rs +++ b/clippy_lints/src/format_args.rs @@ -141,7 +141,7 @@ declare_clippy_lint! { /// format!("{var:.prec$}"); /// ``` /// - /// If allow-mixed-uninlined-format-args is set to false in clippy.toml, + /// If `allow-mixed-uninlined-format-args` is set to `false` in clippy.toml, /// the following code will also trigger the lint: /// ```no_run /// # let var = 42; @@ -159,7 +159,7 @@ declare_clippy_lint! { /// nothing will be suggested, e.g. `println!("{0}={1}", var, 1+2)`. #[clippy::version = "1.66.0"] pub UNINLINED_FORMAT_ARGS, - pedantic, + style, "using non-inlined variables in `format!` calls" } diff --git a/clippy_lints/src/format_impl.rs b/clippy_lints/src/format_impl.rs index 5b42a40d850bb..0535ecf5240f9 100644 --- a/clippy_lints/src/format_impl.rs +++ b/clippy_lints/src/format_impl.rs @@ -1,13 +1,13 @@ use clippy_utils::diagnostics::{span_lint, span_lint_and_sugg}; use clippy_utils::macros::{FormatArgsStorage, find_format_arg_expr, is_format_macro, root_macro_call_first_node}; -use clippy_utils::{get_parent_as_impl, is_diag_trait_item, path_to_local, peel_ref_operators}; +use clippy_utils::{get_parent_as_impl, is_diag_trait_item, path_to_local, peel_ref_operators, sym}; use rustc_ast::{FormatArgsPiece, FormatTrait}; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind, Impl, ImplItem, ImplItemKind, QPath}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::impl_lint_pass; +use rustc_span::Symbol; use rustc_span::symbol::kw; -use rustc_span::{Symbol, sym}; declare_clippy_lint! { /// ### What it does @@ -185,13 +185,13 @@ impl FormatImplExpr<'_, '_> { && let trait_name = match placeholder.format_trait { FormatTrait::Display => sym::Display, FormatTrait::Debug => sym::Debug, - FormatTrait::LowerExp => sym!(LowerExp), - FormatTrait::UpperExp => sym!(UpperExp), - FormatTrait::Octal => sym!(Octal), + FormatTrait::LowerExp => sym::LowerExp, + FormatTrait::UpperExp => sym::UpperExp, + FormatTrait::Octal => sym::Octal, FormatTrait::Pointer => sym::Pointer, - FormatTrait::Binary => sym!(Binary), - FormatTrait::LowerHex => sym!(LowerHex), - FormatTrait::UpperHex => sym!(UpperHex), + FormatTrait::Binary => sym::Binary, + FormatTrait::LowerHex => sym::LowerHex, + FormatTrait::UpperHex => sym::UpperHex, } && trait_name == self.format_trait_impl.name && let Ok(index) = placeholder.argument.index diff --git a/clippy_lints/src/formatting.rs b/clippy_lints/src/formatting.rs index c8fe7ac73cb34..4b482f7b233b8 100644 --- a/clippy_lints/src/formatting.rs +++ b/clippy_lints/src/formatting.rs @@ -138,27 +138,28 @@ impl EarlyLintPass for Formatting { /// Implementation of the `SUSPICIOUS_ASSIGNMENT_FORMATTING` lint. fn check_assign(cx: &EarlyContext<'_>, expr: &Expr) { - if let ExprKind::Assign(ref lhs, ref rhs, _) = expr.kind { - if !lhs.span.from_expansion() && !rhs.span.from_expansion() { - let eq_span = lhs.span.between(rhs.span); - if let ExprKind::Unary(op, ref sub_rhs) = rhs.kind { - if let Some(eq_snippet) = snippet_opt(cx, eq_span) { - let op = op.as_str(); - let eqop_span = lhs.span.between(sub_rhs.span); - if eq_snippet.ends_with('=') { - span_lint_and_note( - cx, - SUSPICIOUS_ASSIGNMENT_FORMATTING, - eqop_span, - format!( - "this looks like you are trying to use `.. {op}= ..`, but you \ + if let ExprKind::Assign(ref lhs, ref rhs, _) = expr.kind + && !lhs.span.from_expansion() + && !rhs.span.from_expansion() + { + let eq_span = lhs.span.between(rhs.span); + if let ExprKind::Unary(op, ref sub_rhs) = rhs.kind + && let Some(eq_snippet) = snippet_opt(cx, eq_span) + { + let op = op.as_str(); + let eqop_span = lhs.span.between(sub_rhs.span); + if eq_snippet.ends_with('=') { + span_lint_and_note( + cx, + SUSPICIOUS_ASSIGNMENT_FORMATTING, + eqop_span, + format!( + "this looks like you are trying to use `.. {op}= ..`, but you \ really are doing `.. = ({op} ..)`" - ), - None, - format!("to remove this lint, use either `{op}=` or `= {op}`"), - ); - } - } + ), + None, + format!("to remove this lint, use either `{op}=` or `= {op}`"), + ); } } } diff --git a/clippy_lints/src/from_str_radix_10.rs b/clippy_lints/src/from_str_radix_10.rs index 7361546153c27..25b087e8484f2 100644 --- a/clippy_lints/src/from_str_radix_10.rs +++ b/clippy_lints/src/from_str_radix_10.rs @@ -73,7 +73,7 @@ impl<'tcx> LateLintPass<'tcx> for FromStrRadix10 { }; let sugg = - Sugg::hir_with_applicability(cx, expr, "", &mut Applicability::MachineApplicable).maybe_par(); + Sugg::hir_with_applicability(cx, expr, "", &mut Applicability::MachineApplicable).maybe_paren(); span_lint_and_sugg( cx, diff --git a/clippy_lints/src/functions/misnamed_getters.rs b/clippy_lints/src/functions/misnamed_getters.rs index 854fe144c2919..fa63876410f01 100644 --- a/clippy_lints/src/functions/misnamed_getters.rs +++ b/clippy_lints/src/functions/misnamed_getters.rs @@ -2,7 +2,7 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::snippet; use rustc_errors::Applicability; use rustc_hir::intravisit::FnKind; -use rustc_hir::{Body, ExprKind, FnDecl, ImplicitSelfKind}; +use rustc_hir::{BlockCheckMode, Body, ExprKind, FnDecl, ImplicitSelfKind, UnsafeSource}; use rustc_lint::LateContext; use rustc_middle::ty; use rustc_span::Span; @@ -40,14 +40,25 @@ pub fn check_fn(cx: &LateContext<'_>, kind: FnKind<'_>, decl: &FnDecl<'_>, body: name }; - // Body must be &(mut) .name + // Body must be `&(mut) .name`, potentially in an `unsafe` block // self_data is not necessarily self, to also lint sub-getters, etc… let block_expr = if let ExprKind::Block(block, _) = body.value.kind && block.stmts.is_empty() && let Some(block_expr) = block.expr { - block_expr + if let ExprKind::Block(unsafe_block, _) = block_expr.kind + && unsafe_block.stmts.is_empty() + && matches!( + unsafe_block.rules, + BlockCheckMode::UnsafeBlock(UnsafeSource::UserProvided) + ) + && let Some(unsafe_block_expr) = unsafe_block.expr + { + unsafe_block_expr + } else { + block_expr + } } else { return; }; diff --git a/clippy_lints/src/functions/renamed_function_params.rs b/clippy_lints/src/functions/renamed_function_params.rs index 4495aeb5953e0..2d22bb157a93c 100644 --- a/clippy_lints/src/functions/renamed_function_params.rs +++ b/clippy_lints/src/functions/renamed_function_params.rs @@ -59,9 +59,7 @@ impl RenamedFnArgs { let mut renamed: Vec<(Span, String)> = vec![]; debug_assert!(default_idents.size_hint() == current_idents.size_hint()); - while let (Some(default_ident), Some(current_ident)) = - (default_idents.next(), current_idents.next()) - { + while let (Some(default_ident), Some(current_ident)) = (default_idents.next(), current_idents.next()) { let has_name_to_check = |ident: Option| { if let Some(ident) = ident && ident.name != kw::Underscore diff --git a/clippy_lints/src/functions/too_many_arguments.rs b/clippy_lints/src/functions/too_many_arguments.rs index 05dc47f6fe580..48d050aa36aa0 100644 --- a/clippy_lints/src/functions/too_many_arguments.rs +++ b/clippy_lints/src/functions/too_many_arguments.rs @@ -47,16 +47,16 @@ pub(super) fn check_fn( } pub(super) fn check_trait_item(cx: &LateContext<'_>, item: &hir::TraitItem<'_>, too_many_arguments_threshold: u64) { - if let hir::TraitItemKind::Fn(ref sig, _) = item.kind { + if let hir::TraitItemKind::Fn(ref sig, _) = item.kind // don't lint extern functions decls, it's not their fault - if sig.header.abi == ExternAbi::Rust { - check_arg_number( - cx, - sig.decl, - item.span.with_hi(sig.decl.output.span().hi()), - too_many_arguments_threshold, - ); - } + && sig.header.abi == ExternAbi::Rust + { + check_arg_number( + cx, + sig.decl, + item.span.with_hi(sig.decl.output.span().hi()), + too_many_arguments_threshold, + ); } } diff --git a/clippy_lints/src/if_then_some_else_none.rs b/clippy_lints/src/if_then_some_else_none.rs index fbbd33efd02d6..9e94280fc0746 100644 --- a/clippy_lints/src/if_then_some_else_none.rs +++ b/clippy_lints/src/if_then_some_else_none.rs @@ -94,7 +94,7 @@ impl<'tcx> LateLintPass<'tcx> for IfThenSomeElseNone { |diag| { let mut app = Applicability::MachineApplicable; let cond_snip = Sugg::hir_with_context(cx, cond, expr.span.ctxt(), "[condition]", &mut app) - .maybe_par() + .maybe_paren() .to_string(); let arg_snip = snippet_with_context(cx, then_arg.span, ctxt, "[body]", &mut app).0; let method_body = if let Some(first_stmt) = then_block.stmts.first() { diff --git a/clippy_lints/src/implicit_return.rs b/clippy_lints/src/implicit_return.rs index 5f95464e4d494..076017a247b4b 100644 --- a/clippy_lints/src/implicit_return.rs +++ b/clippy_lints/src/implicit_return.rs @@ -1,7 +1,7 @@ use clippy_utils::diagnostics::span_lint_hir_and_then; use clippy_utils::source::{snippet_with_applicability, snippet_with_context, walk_span_to_context}; use clippy_utils::visitors::for_each_expr_without_closures; -use clippy_utils::{get_async_fn_body, is_async_fn, is_from_proc_macro}; +use clippy_utils::{desugar_await, get_async_closure_expr, get_async_fn_body, is_async_fn, is_from_proc_macro}; use core::ops::ControlFlow; use rustc_errors::Applicability; use rustc_hir::intravisit::FnKind; @@ -134,6 +134,10 @@ fn lint_implicit_returns( }, ExprKind::Match(_, arms, _) => { + if let Some(await_expr) = desugar_await(expr) { + lint_return(cx, await_expr.hir_id, await_expr.span); + return LintLocation::Inner; + } for arm in arms { let res = lint_implicit_returns( cx, @@ -153,18 +157,18 @@ fn lint_implicit_returns( ExprKind::Loop(block, ..) => { let mut add_return = false; let _: Option = for_each_expr_without_closures(block, |e| { - if let ExprKind::Break(dest, sub_expr) = e.kind { - if dest.target_id.ok() == Some(expr.hir_id) { - if call_site_span.is_none() && e.span.ctxt() == ctxt { - // At this point sub_expr can be `None` in async functions which either diverge, or return - // the unit type. - if let Some(sub_expr) = sub_expr { - lint_break(cx, e.hir_id, e.span, sub_expr.span); - } - } else { - // the break expression is from a macro call, add a return to the loop - add_return = true; + if let ExprKind::Break(dest, sub_expr) = e.kind + && dest.target_id.ok() == Some(expr.hir_id) + { + if call_site_span.is_none() && e.span.ctxt() == ctxt { + // At this point sub_expr can be `None` in async functions which either diverge, or return + // the unit type. + if let Some(sub_expr) = sub_expr { + lint_break(cx, e.hir_id, e.span, sub_expr.span); } + } else { + // the break expression is from a macro call, add a return to the loop + add_return = true; } } ControlFlow::Continue(()) @@ -241,6 +245,8 @@ impl<'tcx> LateLintPass<'tcx> for ImplicitReturn { Some(e) => e, None => return, } + } else if let Some(expr) = get_async_closure_expr(cx.tcx, body.value) { + expr } else { body.value }; diff --git a/clippy_lints/src/implicit_saturating_sub.rs b/clippy_lints/src/implicit_saturating_sub.rs index 5d7d3ae3f24b7..514e72a48682d 100644 --- a/clippy_lints/src/implicit_saturating_sub.rs +++ b/clippy_lints/src/implicit_saturating_sub.rs @@ -239,7 +239,7 @@ fn check_subtraction( // This part of the condition is voluntarily split from the one before to ensure that // if `snippet_opt` fails, it won't try the next conditions. if (!is_in_const_context(cx) || msrv.meets(cx, msrvs::SATURATING_SUB_CONST)) - && let Some(big_expr_sugg) = Sugg::hir_opt(cx, big_expr).map(Sugg::maybe_par) + && let Some(big_expr_sugg) = Sugg::hir_opt(cx, big_expr).map(Sugg::maybe_paren) && let Some(little_expr_sugg) = Sugg::hir_opt(cx, little_expr) { let sugg = format!( diff --git a/clippy_lints/src/implied_bounds_in_impls.rs b/clippy_lints/src/implied_bounds_in_impls.rs index 430f24111832c..6b89abdb0367f 100644 --- a/clippy_lints/src/implied_bounds_in_impls.rs +++ b/clippy_lints/src/implied_bounds_in_impls.rs @@ -8,7 +8,7 @@ use rustc_hir::{ }; use rustc_hir_analysis::lower_ty; use rustc_lint::{LateContext, LateLintPass}; -use rustc_middle::ty::{self, ClauseKind, Generics, Ty, TyCtxt}; +use rustc_middle::ty::{self, AssocItem, ClauseKind, Generics, Ty, TyCtxt}; use rustc_session::declare_lint_pass; use rustc_span::Span; @@ -315,7 +315,7 @@ fn check<'tcx>(cx: &LateContext<'tcx>, bounds: GenericBounds<'tcx>) { assocs .filter_by_name_unhygienic(constraint.ident.name) .next() - .is_some_and(|assoc| assoc.is_type()) + .is_some_and(AssocItem::is_type) }) { emit_lint(cx, poly_trait, bounds, index, implied_constraints, bound); diff --git a/clippy_lints/src/inconsistent_struct_constructor.rs b/clippy_lints/src/inconsistent_struct_constructor.rs index e1dd7872b9d48..e6129757e560f 100644 --- a/clippy_lints/src/inconsistent_struct_constructor.rs +++ b/clippy_lints/src/inconsistent_struct_constructor.rs @@ -65,13 +65,13 @@ declare_clippy_lint! { } pub struct InconsistentStructConstructor { - lint_inconsistent_struct_field_initializers: bool, + check_inconsistent_struct_field_initializers: bool, } impl InconsistentStructConstructor { pub fn new(conf: &'static Conf) -> Self { Self { - lint_inconsistent_struct_field_initializers: conf.lint_inconsistent_struct_field_initializers, + check_inconsistent_struct_field_initializers: conf.check_inconsistent_struct_field_initializers, } } } @@ -86,7 +86,7 @@ impl<'tcx> LateLintPass<'tcx> for InconsistentStructConstructor { let all_fields_are_shorthand = fields.iter().all(|f| f.is_shorthand); let applicability = if all_fields_are_shorthand { Applicability::MachineApplicable - } else if self.lint_inconsistent_struct_field_initializers { + } else if self.check_inconsistent_struct_field_initializers { Applicability::MaybeIncorrect } else { return; diff --git a/clippy_lints/src/indexing_slicing.rs b/clippy_lints/src/indexing_slicing.rs index 33431385c7de3..99a393b4d53af 100644 --- a/clippy_lints/src/indexing_slicing.rs +++ b/clippy_lints/src/indexing_slicing.rs @@ -2,13 +2,12 @@ use clippy_config::Conf; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::{span_lint, span_lint_and_then}; use clippy_utils::ty::{deref_chain, get_adt_inherent_method}; -use clippy_utils::{higher, is_from_proc_macro, is_in_test}; +use clippy_utils::{higher, is_from_proc_macro, is_in_test, sym}; use rustc_ast::ast::RangeLimits; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::{self, Ty}; use rustc_session::impl_lint_pass; -use rustc_span::sym; declare_clippy_lint! { /// ### What it does @@ -136,28 +135,28 @@ impl<'tcx> LateLintPass<'tcx> for IndexingSlicing { let const_range = to_const_range(cx, range, size); - if let (Some(start), _) = const_range { - if start > size { - span_lint( - cx, - OUT_OF_BOUNDS_INDEXING, - range.start.map_or(expr.span, |start| start.span), - "range is out of bounds", - ); - return; - } + if let (Some(start), _) = const_range + && start > size + { + span_lint( + cx, + OUT_OF_BOUNDS_INDEXING, + range.start.map_or(expr.span, |start| start.span), + "range is out of bounds", + ); + return; } - if let (_, Some(end)) = const_range { - if end > size { - span_lint( - cx, - OUT_OF_BOUNDS_INDEXING, - range.end.map_or(expr.span, |end| end.span), - "range is out of bounds", - ); - return; - } + if let (_, Some(end)) = const_range + && end > size + { + span_lint( + cx, + OUT_OF_BOUNDS_INDEXING, + range.end.map_or(expr.span, |end| end.span), + "range is out of bounds", + ); + return; } if let (Some(_), Some(_)) = const_range { @@ -268,7 +267,7 @@ fn ty_has_applicable_get_function<'tcx>( index_expr: &Expr<'_>, ) -> bool { if let ty::Adt(_, _) = array_ty.kind() - && let Some(get_output_ty) = get_adt_inherent_method(cx, ty, sym!(get)).map(|m| { + && let Some(get_output_ty) = get_adt_inherent_method(cx, ty, sym::get).map(|m| { cx.tcx .fn_sig(m.def_id) .skip_binder() diff --git a/clippy_lints/src/infinite_iter.rs b/clippy_lints/src/infinite_iter.rs index 960b9aa032bea..427a1f8255553 100644 --- a/clippy_lints/src/infinite_iter.rs +++ b/clippy_lints/src/infinite_iter.rs @@ -156,11 +156,12 @@ fn is_infinite(cx: &LateContext<'_>, expr: &Expr<'_>) -> Finiteness { .and(cap); } } - if method.ident.name.as_str() == "flat_map" && args.len() == 1 { - if let ExprKind::Closure(&Closure { body, .. }) = args[0].kind { - let body = cx.tcx.hir_body(body); - return is_infinite(cx, body.value); - } + if method.ident.name.as_str() == "flat_map" + && args.len() == 1 + && let ExprKind::Closure(&Closure { body, .. }) = args[0].kind + { + let body = cx.tcx.hir_body(body); + return is_infinite(cx, body.value); } Finite }, diff --git a/clippy_lints/src/instant_subtraction.rs b/clippy_lints/src/instant_subtraction.rs index 4ae1119ab3a27..91f65d0b79ca0 100644 --- a/clippy_lints/src/instant_subtraction.rs +++ b/clippy_lints/src/instant_subtraction.rs @@ -123,7 +123,7 @@ fn print_manual_instant_elapsed_sugg(cx: &LateContext<'_>, expr: &Expr<'_>, sugg expr.span, "manual implementation of `Instant::elapsed`", "try", - format!("{}.elapsed()", sugg.maybe_par()), + format!("{}.elapsed()", sugg.maybe_paren()), Applicability::MachineApplicable, ); } diff --git a/clippy_lints/src/int_plus_one.rs b/clippy_lints/src/int_plus_one.rs index fc575bff7e63f..67ce57de254d3 100644 --- a/clippy_lints/src/int_plus_one.rs +++ b/clippy_lints/src/int_plus_one.rs @@ -130,14 +130,14 @@ impl IntPlusOne { BinOpKind::Le => "<", _ => return None, }; - if let Some(snippet) = node.span.get_source_text(cx) { - if let Some(other_side_snippet) = other_side.span.get_source_text(cx) { - let rec = match side { - Side::Lhs => Some(format!("{snippet} {binop_string} {other_side_snippet}")), - Side::Rhs => Some(format!("{other_side_snippet} {binop_string} {snippet}")), - }; - return rec; - } + if let Some(snippet) = node.span.get_source_text(cx) + && let Some(other_side_snippet) = other_side.span.get_source_text(cx) + { + let rec = match side { + Side::Lhs => Some(format!("{snippet} {binop_string} {other_side_snippet}")), + Side::Rhs => Some(format!("{other_side_snippet} {binop_string} {snippet}")), + }; + return rec; } None } @@ -157,10 +157,10 @@ impl IntPlusOne { impl EarlyLintPass for IntPlusOne { fn check_expr(&mut self, cx: &EarlyContext<'_>, item: &Expr) { - if let ExprKind::Binary(ref kind, ref lhs, ref rhs) = item.kind { - if let Some(rec) = Self::check_binop(cx, kind.node, lhs, rhs) { - Self::emit_warning(cx, item, rec); - } + if let ExprKind::Binary(ref kind, ref lhs, ref rhs) = item.kind + && let Some(rec) = Self::check_binop(cx, kind.node, lhs, rhs) + { + Self::emit_warning(cx, item, rec); } } } diff --git a/clippy_lints/src/invalid_upcast_comparisons.rs b/clippy_lints/src/invalid_upcast_comparisons.rs index b42664340d1c8..b0ecc5d52ddb8 100644 --- a/clippy_lints/src/invalid_upcast_comparisons.rs +++ b/clippy_lints/src/invalid_upcast_comparisons.rs @@ -91,49 +91,49 @@ fn upcast_comparison_bounds_err<'tcx>( rhs: &'tcx Expr<'_>, invert: bool, ) { - if let Some((lb, ub)) = lhs_bounds { - if let Some(norm_rhs_val) = ConstEvalCtxt::new(cx).eval_full_int(rhs) { - if rel == Rel::Eq || rel == Rel::Ne { - if norm_rhs_val < lb || norm_rhs_val > ub { - err_upcast_comparison(cx, span, lhs, rel == Rel::Ne); - } - } else if match rel { - Rel::Lt => { - if invert { - norm_rhs_val < lb - } else { - ub < norm_rhs_val - } - }, - Rel::Le => { - if invert { - norm_rhs_val <= lb - } else { - ub <= norm_rhs_val - } - }, - Rel::Eq | Rel::Ne => unreachable!(), - } { - err_upcast_comparison(cx, span, lhs, true); - } else if match rel { - Rel::Lt => { - if invert { - norm_rhs_val >= ub - } else { - lb >= norm_rhs_val - } - }, - Rel::Le => { - if invert { - norm_rhs_val > ub - } else { - lb > norm_rhs_val - } - }, - Rel::Eq | Rel::Ne => unreachable!(), - } { - err_upcast_comparison(cx, span, lhs, false); + if let Some((lb, ub)) = lhs_bounds + && let Some(norm_rhs_val) = ConstEvalCtxt::new(cx).eval_full_int(rhs) + { + if rel == Rel::Eq || rel == Rel::Ne { + if norm_rhs_val < lb || norm_rhs_val > ub { + err_upcast_comparison(cx, span, lhs, rel == Rel::Ne); } + } else if match rel { + Rel::Lt => { + if invert { + norm_rhs_val < lb + } else { + ub < norm_rhs_val + } + }, + Rel::Le => { + if invert { + norm_rhs_val <= lb + } else { + ub <= norm_rhs_val + } + }, + Rel::Eq | Rel::Ne => unreachable!(), + } { + err_upcast_comparison(cx, span, lhs, true); + } else if match rel { + Rel::Lt => { + if invert { + norm_rhs_val >= ub + } else { + lb >= norm_rhs_val + } + }, + Rel::Le => { + if invert { + norm_rhs_val > ub + } else { + lb > norm_rhs_val + } + }, + Rel::Eq | Rel::Ne => unreachable!(), + } { + err_upcast_comparison(cx, span, lhs, false); } } } diff --git a/clippy_lints/src/item_name_repetitions.rs b/clippy_lints/src/item_name_repetitions.rs index 977fd5fce15be..b1271a264b548 100644 --- a/clippy_lints/src/item_name_repetitions.rs +++ b/clippy_lints/src/item_name_repetitions.rs @@ -377,22 +377,21 @@ impl ItemNameRepetitions { "field name starts with the struct's name", ); } - if field_words.len() > item_name_words.len() { + if field_words.len() > item_name_words.len() // lint only if the end is not covered by the start - if field_words + && field_words .iter() .rev() .zip(item_name_words.iter().rev()) .all(|(a, b)| a == b) - { - span_lint_hir( - cx, - STRUCT_FIELD_NAMES, - field.hir_id, - field.span, - "field name ends with the struct's name", - ); - } + { + span_lint_hir( + cx, + STRUCT_FIELD_NAMES, + field.hir_id, + field.span, + "field name ends with the struct's name", + ); } } } @@ -445,57 +444,56 @@ impl LateLintPass<'_> for ItemNameRepetitions { let item_name = ident.name.as_str(); let item_camel = to_camel_case(item_name); - if !item.span.from_expansion() && is_present_in_source(cx, item.span) { - if let [.., (mod_name, mod_camel, mod_owner_id)] = &*self.modules { - // constants don't have surrounding modules - if !mod_camel.is_empty() { - if mod_name == &ident.name - && let ItemKind::Mod(..) = item.kind - && (!self.allow_private_module_inception || cx.tcx.visibility(mod_owner_id.def_id).is_public()) - { - span_lint( - cx, - MODULE_INCEPTION, - item.span, - "module has the same name as its containing module", - ); - } + if !item.span.from_expansion() && is_present_in_source(cx, item.span) + && let [.., (mod_name, mod_camel, mod_owner_id)] = &*self.modules + // constants don't have surrounding modules + && !mod_camel.is_empty() + { + if mod_name == &ident.name + && let ItemKind::Mod(..) = item.kind + && (!self.allow_private_module_inception || cx.tcx.visibility(mod_owner_id.def_id).is_public()) + { + span_lint( + cx, + MODULE_INCEPTION, + item.span, + "module has the same name as its containing module", + ); + } - // The `module_name_repetitions` lint should only trigger if the item has the module in its - // name. Having the same name is accepted. - if cx.tcx.visibility(item.owner_id).is_public() - && cx.tcx.visibility(mod_owner_id.def_id).is_public() - && item_camel.len() > mod_camel.len() - { - let matching = count_match_start(mod_camel, &item_camel); - let rmatching = count_match_end(mod_camel, &item_camel); - let nchars = mod_camel.chars().count(); - - let is_word_beginning = |c: char| c == '_' || c.is_uppercase() || c.is_numeric(); - - if matching.char_count == nchars { - match item_camel.chars().nth(nchars) { - Some(c) if is_word_beginning(c) => span_lint( - cx, - MODULE_NAME_REPETITIONS, - ident.span, - "item name starts with its containing module's name", - ), - _ => (), - } - } - if rmatching.char_count == nchars - && !self.is_allowed_prefix(&item_camel[..item_camel.len() - rmatching.byte_count]) - { - span_lint( - cx, - MODULE_NAME_REPETITIONS, - ident.span, - "item name ends with its containing module's name", - ); - } + // The `module_name_repetitions` lint should only trigger if the item has the module in its + // name. Having the same name is accepted. + if cx.tcx.visibility(item.owner_id).is_public() + && cx.tcx.visibility(mod_owner_id.def_id).is_public() + && item_camel.len() > mod_camel.len() + { + let matching = count_match_start(mod_camel, &item_camel); + let rmatching = count_match_end(mod_camel, &item_camel); + let nchars = mod_camel.chars().count(); + + let is_word_beginning = |c: char| c == '_' || c.is_uppercase() || c.is_numeric(); + + if matching.char_count == nchars { + match item_camel.chars().nth(nchars) { + Some(c) if is_word_beginning(c) => span_lint( + cx, + MODULE_NAME_REPETITIONS, + ident.span, + "item name starts with its containing module's name", + ), + _ => (), } } + if rmatching.char_count == nchars + && !self.is_allowed_prefix(&item_camel[..item_camel.len() - rmatching.byte_count]) + { + span_lint( + cx, + MODULE_NAME_REPETITIONS, + ident.span, + "item name ends with its containing module's name", + ); + } } } diff --git a/clippy_lints/src/len_zero.rs b/clippy_lints/src/len_zero.rs index 77085d52a32ed..8c71d34c95f6d 100644 --- a/clippy_lints/src/len_zero.rs +++ b/clippy_lints/src/len_zero.rs @@ -2,13 +2,13 @@ use clippy_utils::diagnostics::{span_lint, span_lint_and_sugg, span_lint_and_the use clippy_utils::source::{SpanRangeExt, snippet_with_context}; use clippy_utils::sugg::{Sugg, has_enclosing_paren}; use clippy_utils::ty::implements_trait; -use clippy_utils::{get_item_name, get_parent_as_impl, is_lint_allowed, is_trait_method, peel_ref_operators}; +use clippy_utils::{fulfill_or_allowed, get_item_name, get_parent_as_impl, is_trait_method, peel_ref_operators, sym}; use rustc_ast::ast::LitKind; use rustc_errors::Applicability; use rustc_hir::def::Res; use rustc_hir::def_id::{DefId, DefIdSet}; use rustc_hir::{ - AssocItemKind, BinOpKind, Expr, ExprKind, FnRetTy, GenericArg, GenericBound, ImplItem, ImplItemKind, + AssocItemKind, BinOpKind, Expr, ExprKind, FnRetTy, GenericArg, GenericBound, HirId, ImplItem, ImplItemKind, ImplicitSelfKind, Item, ItemKind, Mutability, Node, OpaqueTyOrigin, PatExprKind, PatKind, PathSegment, PrimTy, QPath, TraitItemRef, TyKind, }; @@ -16,7 +16,6 @@ use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::{self, FnSig, Ty}; use rustc_session::declare_lint_pass; use rustc_span::source_map::Spanned; -use rustc_span::symbol::sym; use rustc_span::{Ident, Span, Symbol}; use rustc_trait_selection::traits::supertrait_def_ids; @@ -143,7 +142,6 @@ impl<'tcx> LateLintPass<'tcx> for LenZero { && let Some(ty_id) = cx.qpath_res(ty_path, imp.self_ty.hir_id).opt_def_id() && let Some(local_id) = ty_id.as_local() && let ty_hir_id = cx.tcx.local_def_id_to_hir_id(local_id) - && !is_lint_allowed(cx, LEN_WITHOUT_IS_EMPTY, ty_hir_id) && let Some(output) = parse_len_output(cx, cx.tcx.fn_sig(item.owner_id).instantiate_identity().skip_binder()) { @@ -157,7 +155,17 @@ impl<'tcx> LateLintPass<'tcx> for LenZero { }, _ => return, }; - check_for_is_empty(cx, sig.span, sig.decl.implicit_self, output, ty_id, name, kind); + check_for_is_empty( + cx, + sig.span, + sig.decl.implicit_self, + output, + ty_id, + name, + kind, + item.hir_id(), + ty_hir_id, + ); } } @@ -180,7 +188,7 @@ impl<'tcx> LateLintPass<'tcx> for LenZero { let mut applicability = Applicability::MachineApplicable; let lit1 = peel_ref_operators(cx, lt.init); - let lit_str = Sugg::hir_with_context(cx, lit1, lt.span.ctxt(), "_", &mut applicability).maybe_par(); + let lit_str = Sugg::hir_with_context(cx, lit1, lt.span.ctxt(), "_", &mut applicability).maybe_paren(); span_lint_and_sugg( cx, @@ -202,7 +210,11 @@ impl<'tcx> LateLintPass<'tcx> for LenZero { expr.span, lhs_expr, peel_ref_operators(cx, rhs_expr), - (method.ident.name == sym::ne).then_some("!").unwrap_or_default(), + if method.ident.name == sym::ne { + "!" + } else { + Default::default() + }, ); } @@ -282,15 +294,10 @@ fn check_trait_items(cx: &LateContext<'_>, visited_trait: &Item<'_>, ident: Iden { let mut current_and_super_traits = DefIdSet::default(); fill_trait_set(visited_trait.owner_id.to_def_id(), &mut current_and_super_traits, cx); - let is_empty = sym!(is_empty); - let is_empty_method_found = current_and_super_traits .items() - .flat_map(|&i| cx.tcx.associated_items(i).filter_by_name_unhygienic(is_empty)) - .any(|i| { - i.is_method() - && cx.tcx.fn_sig(i.def_id).skip_binder().inputs().skip_binder().len() == 1 - }); + .flat_map(|&i| cx.tcx.associated_items(i).filter_by_name_unhygienic(sym::is_empty)) + .any(|i| i.is_method() && cx.tcx.fn_sig(i.def_id).skip_binder().inputs().skip_binder().len() == 1); if !is_empty_method_found { span_lint( @@ -442,6 +449,7 @@ fn check_is_empty_sig<'tcx>( } /// Checks if the given type has an `is_empty` method with the appropriate signature. +#[expect(clippy::too_many_arguments)] fn check_for_is_empty( cx: &LateContext<'_>, span: Span, @@ -450,6 +458,8 @@ fn check_for_is_empty( impl_ty: DefId, item_name: Symbol, item_kind: &str, + len_method_hir_id: HirId, + ty_decl_hir_id: HirId, ) { // Implementor may be a type alias, in which case we need to get the `DefId` of the aliased type to // find the correct inherent impls. @@ -459,12 +469,11 @@ fn check_for_is_empty( return; }; - let is_empty = Symbol::intern("is_empty"); let is_empty = cx .tcx .inherent_impls(impl_ty) .iter() - .flat_map(|&id| cx.tcx.associated_items(id).filter_by_name_unhygienic(is_empty)) + .flat_map(|&id| cx.tcx.associated_items(id).filter_by_name_unhygienic(sym::is_empty)) .find(|item| item.is_fn()); let (msg, is_empty_span, self_kind) = match is_empty { @@ -505,14 +514,16 @@ fn check_for_is_empty( Some(_) => return, }; - span_lint_and_then(cx, LEN_WITHOUT_IS_EMPTY, span, msg, |db| { - if let Some(span) = is_empty_span { - db.span_note(span, "`is_empty` defined here"); - } - if let Some(self_kind) = self_kind { - db.note(output.expected_sig(self_kind)); - } - }); + if !fulfill_or_allowed(cx, LEN_WITHOUT_IS_EMPTY, [len_method_hir_id, ty_decl_hir_id]) { + span_lint_and_then(cx, LEN_WITHOUT_IS_EMPTY, span, msg, |db| { + if let Some(span) = is_empty_span { + db.span_note(span, "`is_empty` defined here"); + } + if let Some(self_kind) = self_kind { + db.note(output.expected_sig(self_kind)); + } + }); + } } fn check_cmp(cx: &LateContext<'_>, span: Span, method: &Expr<'_>, lit: &Expr<'_>, op: &str, compare_to: u32) { @@ -522,10 +533,10 @@ fn check_cmp(cx: &LateContext<'_>, span: Span, method: &Expr<'_>, lit: &Expr<'_> if let (&ExprKind::MethodCall(method_path, receiver, [], _), ExprKind::Lit(lit)) = (&method.kind, &lit.kind) { // check if we are in an is_empty() method - if let Some(name) = get_item_name(cx, method) { - if name.as_str() == "is_empty" { - return; - } + if let Some(name) = get_item_name(cx, method) + && name.as_str() == "is_empty" + { + return; } check_len(cx, span, method_path.ident.name, receiver, &lit.node, op, compare_to); @@ -572,7 +583,7 @@ fn check_empty_expr(cx: &LateContext<'_>, span: Span, lit1: &Expr<'_>, lit2: &Ex let mut applicability = Applicability::MachineApplicable; let lit1 = peel_ref_operators(cx, lit1); - let lit_str = Sugg::hir_with_context(cx, lit1, span.ctxt(), "_", &mut applicability).maybe_par(); + let lit_str = Sugg::hir_with_context(cx, lit1, span.ctxt(), "_", &mut applicability).maybe_paren(); span_lint_and_sugg( cx, @@ -587,11 +598,11 @@ fn check_empty_expr(cx: &LateContext<'_>, span: Span, lit1: &Expr<'_>, lit2: &Ex } fn is_empty_string(expr: &Expr<'_>) -> bool { - if let ExprKind::Lit(lit) = expr.kind { - if let LitKind::Str(lit, _) = lit.node { - let lit = lit.as_str(); - return lit.is_empty(); - } + if let ExprKind::Lit(lit) = expr.kind + && let LitKind::Str(lit, _) = lit.node + { + let lit = lit.as_str(); + return lit.is_empty(); } false } @@ -618,11 +629,10 @@ fn has_is_empty(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { /// Checks the inherent impl's items for an `is_empty(self)` method. fn has_is_empty_impl(cx: &LateContext<'_>, id: DefId) -> bool { - let is_empty = sym!(is_empty); cx.tcx.inherent_impls(id).iter().any(|imp| { cx.tcx .associated_items(*imp) - .filter_by_name_unhygienic(is_empty) + .filter_by_name_unhygienic(sym::is_empty) .any(|item| is_is_empty(cx, item)) }) } @@ -630,10 +640,9 @@ fn has_is_empty(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { fn ty_has_is_empty<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>, depth: usize) -> bool { match ty.kind() { ty::Dynamic(tt, ..) => tt.principal().is_some_and(|principal| { - let is_empty = sym!(is_empty); cx.tcx .associated_items(principal.def_id()) - .filter_by_name_unhygienic(is_empty) + .filter_by_name_unhygienic(sym::is_empty) .any(|item| is_is_empty(cx, item)) }), ty::Alias(ty::Projection, proj) => has_is_empty_impl(cx, proj.def_id), diff --git a/clippy_lints/src/lib.rs b/clippy_lints/src/lib.rs index 3fe3cd67e1671..5fa8f6f4bf3d4 100644 --- a/clippy_lints/src/lib.rs +++ b/clippy_lints/src/lib.rs @@ -65,7 +65,6 @@ mod declare_clippy_lint; #[macro_use] extern crate clippy_utils; -#[cfg_attr(feature = "internal", allow(clippy::missing_clippy_version_attribute))] mod utils; pub mod ctfe; // Very important lint, do not remove (rust#125116) @@ -205,6 +204,7 @@ mod loops; mod macro_metavars_in_unsafe; mod macro_use; mod main_recursion; +mod manual_abs_diff; mod manual_assert; mod manual_async_fn; mod manual_bits; @@ -226,7 +226,6 @@ mod manual_rotate; mod manual_slice_size_calculation; mod manual_string_new; mod manual_strip; -mod manual_unwrap_or_default; mod map_unit_fn; mod match_result_ok; mod matches; @@ -320,6 +319,7 @@ mod redundant_locals; mod redundant_pub_crate; mod redundant_slicing; mod redundant_static_lifetimes; +mod redundant_test_prefix; mod redundant_type_annotations; mod ref_option_ref; mod ref_patterns; @@ -412,21 +412,6 @@ use rustc_data_structures::fx::FxHashSet; use rustc_lint::{Lint, LintId}; use utils::attr_collector::{AttrCollector, AttrStorage}; -/// Register all pre expansion lints -/// -/// Pre-expansion lints run before any macro expansion has happened. -/// -/// Note that due to the architecture of the compiler, currently `cfg_attr` attributes on crate -/// level (i.e `#![cfg_attr(...)]`) will still be expanded even when using a pre-expansion pass. -/// -/// Used in `./src/driver.rs`. -pub fn register_pre_expansion_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { - // NOTE: Do not add any more pre-expansion passes. These should be removed eventually. - store.register_pre_expansion_pass(move || Box::new(attrs::EarlyAttributes::new(conf))); - - store.register_early_pass(move || Box::new(attrs::PostExpansionEarlyAttributes::new(conf))); -} - #[derive(Default)] struct RegistrationGroups { all: Vec, @@ -439,8 +424,6 @@ struct RegistrationGroups { restriction: Vec, style: Vec, suspicious: Vec, - #[cfg(feature = "internal")] - internal: Vec, } impl RegistrationGroups { @@ -456,8 +439,6 @@ impl RegistrationGroups { store.register_group(true, "clippy::restriction", Some("clippy_restriction"), self.restriction); store.register_group(true, "clippy::style", Some("clippy_style"), self.style); store.register_group(true, "clippy::suspicious", Some("clippy_suspicious"), self.suspicious); - #[cfg(feature = "internal")] - store.register_group(true, "clippy::internal", Some("clippy_internal"), self.internal); } } @@ -472,8 +453,6 @@ pub(crate) enum LintCategory { Restriction, Style, Suspicious, - #[cfg(feature = "internal")] - Internal, } #[allow(clippy::enum_glob_use)] @@ -495,8 +474,6 @@ impl LintCategory { Restriction => &mut groups.restriction, Style => &mut groups.style, Suspicious => &mut groups.suspicious, - #[cfg(feature = "internal")] - Internal => &mut groups.internal, } } } @@ -530,8 +507,6 @@ impl LintInfo { Restriction => "restriction", Style => "style", Suspicious => "suspicious", - #[cfg(feature = "internal")] - Internal => "internal", } } } @@ -589,6 +564,13 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { store.register_removed(name, reason); } + // NOTE: Do not add any more pre-expansion passes. These should be removed eventually. + // Due to the architecture of the compiler, currently `cfg_attr` attributes on crate + // level (i.e `#![cfg_attr(...)]`) will still be expanded even when using a pre-expansion pass. + store.register_pre_expansion_pass(move || Box::new(attrs::EarlyAttributes::new(conf))); + + store.register_early_pass(move || Box::new(attrs::PostExpansionEarlyAttributes::new(conf))); + let format_args_storage = FormatArgsStorage::default(); let format_args = format_args_storage.clone(); store.register_early_pass(move || { @@ -601,30 +583,6 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { let attrs = attr_storage.clone(); store.register_early_pass(move || Box::new(AttrCollector::new(attrs.clone()))); - // all the internal lints - #[cfg(feature = "internal")] - { - store.register_early_pass(|| { - Box::new(utils::internal_lints::unsorted_clippy_utils_paths::UnsortedClippyUtilsPaths) - }); - store.register_early_pass(|| Box::new(utils::internal_lints::produce_ice::ProduceIce)); - store.register_late_pass(|_| Box::new(utils::internal_lints::collapsible_calls::CollapsibleCalls)); - store.register_late_pass(|_| Box::new(utils::internal_lints::invalid_paths::InvalidPaths)); - store.register_late_pass(|_| { - Box::::default() - }); - store.register_late_pass(|_| { - Box::::default() - }); - store.register_late_pass(|_| Box::::default()); - store.register_late_pass(|_| Box::new(utils::internal_lints::outer_expn_data_pass::OuterExpnDataPass)); - store.register_late_pass(|_| Box::new(utils::internal_lints::msrv_attr_impl::MsrvAttrImpl)); - store.register_late_pass(|_| { - Box::new(utils::internal_lints::almost_standard_lint_formulation::AlmostStandardFormulation::new()) - }); - store.register_late_pass(|_| Box::new(utils::internal_lints::slow_symbol_comparisons::SlowSymbolComparisons)); - } - store.register_late_pass(|_| Box::new(ctfe::ClippyCtfe)); store.register_late_pass(move |_| Box::new(operators::arithmetic_side_effects::ArithmeticSideEffects::new(conf))); @@ -772,7 +730,7 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { store.register_late_pass(|_| Box::new(redundant_closure_call::RedundantClosureCall)); store.register_early_pass(|| Box::new(unused_unit::UnusedUnit)); store.register_late_pass(|_| Box::new(returns::Return)); - store.register_early_pass(|| Box::new(collapsible_if::CollapsibleIf)); + store.register_late_pass(move |tcx| Box::new(collapsible_if::CollapsibleIf::new(tcx, conf))); store.register_late_pass(|_| Box::new(items_after_statements::ItemsAfterStatements)); store.register_early_pass(|| Box::new(precedence::Precedence)); store.register_late_pass(|_| Box::new(needless_parens_on_range_literals::NeedlessParensOnRangeLiterals)); @@ -857,7 +815,7 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { store.register_late_pass(move |_| Box::new(write::Write::new(conf, format_args.clone()))); store.register_late_pass(move |_| Box::new(cargo::Cargo::new(conf))); store.register_early_pass(|| Box::new(crate_in_macro_def::CrateInMacroDef)); - store.register_early_pass(|| Box::new(empty_with_brackets::EmptyWithBrackets)); + store.register_late_pass(|_| Box::new(empty_with_brackets::EmptyWithBrackets::default())); store.register_late_pass(|_| Box::new(unnecessary_owned_empty_strings::UnnecessaryOwnedEmptyStrings)); store.register_early_pass(|| Box::new(pub_use::PubUse)); store.register_late_pass(|_| Box::new(format_push_string::FormatPushString)); @@ -879,6 +837,7 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { store.register_late_pass(move |_| Box::new(std_instead_of_core::StdReexports::new(conf))); store.register_late_pass(move |_| Box::new(instant_subtraction::InstantSubtraction::new(conf))); store.register_late_pass(|_| Box::new(partialeq_to_none::PartialeqToNone)); + store.register_late_pass(move |_| Box::new(manual_abs_diff::ManualAbsDiff::new(conf))); store.register_late_pass(move |_| Box::new(manual_clamp::ManualClamp::new(conf))); store.register_late_pass(|_| Box::new(manual_string_new::ManualStringNew)); store.register_late_pass(|_| Box::new(unused_peekable::UnusedPeekable)); @@ -960,7 +919,6 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { store.register_early_pass(|| Box::new(multiple_bound_locations::MultipleBoundLocations)); store.register_late_pass(move |_| Box::new(assigning_clones::AssigningClones::new(conf))); store.register_late_pass(|_| Box::new(zero_repeat_side_effects::ZeroRepeatSideEffects)); - store.register_late_pass(|_| Box::new(manual_unwrap_or_default::ManualUnwrapOrDefault)); store.register_late_pass(|_| Box::new(integer_division_remainder_used::IntegerDivisionRemainderUsed)); store.register_late_pass(move |_| Box::new(macro_metavars_in_unsafe::ExprMetavarsInUnsafe::new(conf))); store.register_late_pass(move |_| Box::new(string_patterns::StringPatterns::new(conf))); @@ -971,7 +929,7 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { store.register_late_pass(|_| Box::new(zombie_processes::ZombieProcesses)); store.register_late_pass(|_| Box::new(pointers_in_nomem_asm_block::PointersInNomemAsmBlock)); store.register_late_pass(move |_| Box::new(manual_div_ceil::ManualDivCeil::new(conf))); - store.register_late_pass(|_| Box::new(manual_is_power_of_two::ManualIsPowerOfTwo)); + store.register_late_pass(move |_| Box::new(manual_is_power_of_two::ManualIsPowerOfTwo::new(conf))); store.register_late_pass(|_| Box::new(non_zero_suggestions::NonZeroSuggestions)); store.register_late_pass(|_| Box::new(literal_string_with_formatting_args::LiteralStringWithFormattingArg)); store.register_late_pass(move |_| Box::new(unused_trait_names::UnusedTraitNames::new(conf))); @@ -984,5 +942,6 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { store.register_late_pass(move |_| Box::new(non_std_lazy_statics::NonStdLazyStatic::new(conf))); store.register_late_pass(|_| Box::new(manual_option_as_slice::ManualOptionAsSlice::new(conf))); store.register_late_pass(|_| Box::new(single_option_map::SingleOptionMap)); + store.register_late_pass(move |_| Box::new(redundant_test_prefix::RedundantTestPrefix)); // add lints here, do not remove this comment, it's used in `new_lint` } diff --git a/clippy_lints/src/lifetimes.rs b/clippy_lints/src/lifetimes.rs index dabef18b98a90..5ef5e3a44f85f 100644 --- a/clippy_lints/src/lifetimes.rs +++ b/clippy_lints/src/lifetimes.rs @@ -150,10 +150,10 @@ impl<'tcx> LateLintPass<'tcx> for Lifetimes { } = item.kind { check_fn_inner(cx, sig, Some(id), None, generics, item.span, true, self.msrv); - } else if let ItemKind::Impl(impl_) = item.kind { - if !item.span.from_expansion() { - report_extra_impl_lifetimes(cx, impl_); - } + } else if let ItemKind::Impl(impl_) = item.kind + && !item.span.from_expansion() + { + report_extra_impl_lifetimes(cx, impl_); } } @@ -300,8 +300,8 @@ fn could_use_elision<'tcx>( let input_lts = input_visitor.lts; let output_lts = output_visitor.lts; - if let Some(trait_sig) = trait_sig - && non_elidable_self_type(cx, func, trait_sig.first().copied(), msrv) + if let Some(&[trait_sig]) = trait_sig + && non_elidable_self_type(cx, func, trait_sig, msrv) { return None; } @@ -310,11 +310,11 @@ fn could_use_elision<'tcx>( let body = cx.tcx.hir_body(body_id); let first_ident = body.params.first().and_then(|param| param.pat.simple_ident()); - if non_elidable_self_type(cx, func, Some(first_ident), msrv) { + if non_elidable_self_type(cx, func, first_ident, msrv) { return None; } - let mut checker = BodyLifetimeChecker; + let mut checker = BodyLifetimeChecker::new(cx); if checker.visit_expr(body.value).is_break() { return None; } @@ -384,8 +384,8 @@ fn allowed_lts_from(named_generics: &[GenericParam<'_>]) -> FxIndexSet(cx: &LateContext<'tcx>, func: &FnDecl<'tcx>, ident: Option>, msrv: Msrv) -> bool { - if let Some(Some(ident)) = ident +fn non_elidable_self_type<'tcx>(cx: &LateContext<'tcx>, func: &FnDecl<'tcx>, ident: Option, msrv: Msrv) -> bool { + if let Some(ident) = ident && ident.name == kw::SelfLower && !func.implicit_self.has_implicit_self() && let Some(self_ty) = func.inputs.first() @@ -911,10 +911,23 @@ fn elision_suggestions( Some(suggestions) } -struct BodyLifetimeChecker; +struct BodyLifetimeChecker<'tcx> { + tcx: TyCtxt<'tcx>, +} -impl<'tcx> Visitor<'tcx> for BodyLifetimeChecker { +impl<'tcx> BodyLifetimeChecker<'tcx> { + fn new(cx: &LateContext<'tcx>) -> Self { + Self { tcx: cx.tcx } + } +} + +impl<'tcx> Visitor<'tcx> for BodyLifetimeChecker<'tcx> { type Result = ControlFlow<()>; + type NestedFilter = middle_nested_filter::OnlyBodies; + + fn maybe_tcx(&mut self) -> Self::MaybeTyCtxt { + self.tcx + } // for lifetimes as parameters of generics fn visit_lifetime(&mut self, lifetime: &'tcx Lifetime) -> ControlFlow<()> { if !lifetime.is_anonymous() && lifetime.ident.name != kw::StaticLifetime { diff --git a/clippy_lints/src/literal_representation.rs b/clippy_lints/src/literal_representation.rs index 805de23408bf5..7cbfa2d097ae5 100644 --- a/clippy_lints/src/literal_representation.rs +++ b/clippy_lints/src/literal_representation.rs @@ -387,12 +387,11 @@ impl LiteralDigitGrouping { let first = groups.next().expect("At least one group"); - if radix == Radix::Binary || radix == Radix::Octal || radix == Radix::Hexadecimal { - if let Some(second_size) = groups.next() { - if !groups.all(|i| i == second_size) || first > second_size { - return Err(WarningType::UnusualByteGroupings); - } - } + if (radix == Radix::Binary || radix == Radix::Octal || radix == Radix::Hexadecimal) + && let Some(second_size) = groups.next() + && (!groups.all(|i| i == second_size) || first > second_size) + { + return Err(WarningType::UnusualByteGroupings); } if let Some(second) = groups.next() { diff --git a/clippy_lints/src/literal_string_with_formatting_args.rs b/clippy_lints/src/literal_string_with_formatting_args.rs index 975e6833a35f8..244e7c95122e0 100644 --- a/clippy_lints/src/literal_string_with_formatting_args.rs +++ b/clippy_lints/src/literal_string_with_formatting_args.rs @@ -45,15 +45,14 @@ fn emit_lint(cx: &LateContext<'_>, expr: &Expr<'_>, spans: &[(Span, Option = ControlFlow::Continue(()); + +pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, pat: &Pat<'_>, iterable: &Expr<'_>, body: &'tcx Expr<'tcx>) { + if let ExprKind::MethodCall(_, enumerate_recv, _, enumerate_span) = iterable.kind + && let Some(method_id) = cx.typeck_results().type_dependent_def_id(iterable.hir_id) + && cx.tcx.is_diagnostic_item(sym::enumerate_method, method_id) + && let ExprKind::MethodCall(_, chars_recv, _, chars_span) = enumerate_recv.kind + && let Some(method_id) = cx.typeck_results().type_dependent_def_id(enumerate_recv.hir_id) + && cx.tcx.is_diagnostic_item(sym::str_chars, method_id) + { + if let PatKind::Tuple([pat, _], _) = pat.kind + && let PatKind::Binding(_, binding_id, ..) = pat.kind + { + // Destructured iterator element `(idx, _)`, look for uses of the binding + for_each_expr(cx, body, |expr| { + if path_to_local_id(expr, binding_id) { + check_index_usage(cx, expr, pat, enumerate_span, chars_span, chars_recv); + } + CONTINUE + }); + } else if let PatKind::Binding(_, binding_id, ..) = pat.kind { + // Bound as a tuple, look for `tup.0` + for_each_expr(cx, body, |expr| { + if let ExprKind::Field(e, field) = expr.kind + && path_to_local_id(e, binding_id) + && field.name == sym::integer(0) + { + check_index_usage(cx, expr, pat, enumerate_span, chars_span, chars_recv); + } + CONTINUE + }); + } + } +} + +fn check_index_usage<'tcx>( + cx: &LateContext<'tcx>, + expr: &'tcx Expr<'tcx>, + pat: &Pat<'_>, + enumerate_span: Span, + chars_span: Span, + chars_recv: &Expr<'_>, +) { + let Some(parent_expr) = index_consumed_at(cx, expr) else { + return; + }; + + let is_string_like = |ty: Ty<'_>| ty.is_str() || is_type_lang_item(cx, ty, LangItem::String); + let message = match parent_expr.kind { + ExprKind::MethodCall(segment, recv, ..) + // We currently only lint `str` methods (which `String` can deref to), so a `.is_str()` check is sufficient here + // (contrary to the `ExprKind::Index` case which needs to handle both with `is_string_like` because `String` implements + // `Index` directly and no deref to `str` would happen in that case). + if cx.typeck_results().expr_ty_adjusted(recv).peel_refs().is_str() + && BYTE_INDEX_METHODS.contains(&segment.ident.name.as_str()) + && eq_expr_value(cx, chars_recv, recv) => + { + "passing a character position to a method that expects a byte index" + }, + ExprKind::Index(target, ..) + if is_string_like(cx.typeck_results().expr_ty_adjusted(target).peel_refs()) + && eq_expr_value(cx, chars_recv, target) => + { + "indexing into a string with a character position where a byte index is expected" + }, + _ => return, + }; + + span_lint_hir_and_then( + cx, + CHAR_INDICES_AS_BYTE_INDICES, + expr.hir_id, + expr.span, + message, + |diag| { + diag.note("a character can take up more than one byte, so they are not interchangeable") + .span_note( + MultiSpan::from_spans(vec![pat.span, enumerate_span]), + "position comes from the enumerate iterator", + ) + .span_suggestion_verbose( + chars_span.to(enumerate_span), + "consider using `.char_indices()` instead", + "char_indices()", + Applicability::MaybeIncorrect, + ); + }, + ); +} + +/// Returns the expression which ultimately consumes the index. +/// This is usually the parent expression, i.e. `.split_at(idx)` for `idx`, +/// but for `.get(..idx)` we want to consider the method call the consuming expression, +/// which requires skipping past the range expression. +fn index_consumed_at<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) -> Option<&'tcx Expr<'tcx>> { + for (_, node) in cx.tcx.hir_parent_iter(expr.hir_id) { + match node { + Node::Expr(expr) if higher::Range::hir(expr).is_some() => {}, + Node::ExprField(_) => {}, + Node::Expr(expr) => return Some(expr), + _ => break, + } + } + None +} diff --git a/clippy_lints/src/loops/explicit_iter_loop.rs b/clippy_lints/src/loops/explicit_iter_loop.rs index 412c78cc80411..d0b26c91ffafb 100644 --- a/clippy_lints/src/loops/explicit_iter_loop.rs +++ b/clippy_lints/src/loops/explicit_iter_loop.rs @@ -2,6 +2,7 @@ use super::EXPLICIT_ITER_LOOP; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_applicability; +use clippy_utils::sym; use clippy_utils::ty::{ implements_trait, implements_trait_with_env, is_copy, is_type_lang_item, make_normalized_projection, make_normalized_projection_with_regions, normalize_with_regions, @@ -11,7 +12,6 @@ use rustc_hir::{Expr, Mutability}; use rustc_lint::LateContext; use rustc_middle::ty::adjustment::{Adjust, Adjustment, AutoBorrow, AutoBorrowMutability}; use rustc_middle::ty::{self, EarlyBinder, Ty}; -use rustc_span::sym; pub(super) fn check( cx: &LateContext<'_>, @@ -119,7 +119,7 @@ fn is_ref_iterable<'tcx>( && let typing_env = ty::TypingEnv::non_body_analysis(cx.tcx, fn_id) && implements_trait_with_env(cx.tcx, typing_env, req_self_ty, trait_id, Some(fn_id), &[]) && let Some(into_iter_ty) = - make_normalized_projection_with_regions(cx.tcx, typing_env, trait_id, sym!(IntoIter), [req_self_ty]) + make_normalized_projection_with_regions(cx.tcx, typing_env, trait_id, sym::IntoIter, [req_self_ty]) && let req_res_ty = normalize_with_regions(cx.tcx, typing_env, req_res_ty) && into_iter_ty == req_res_ty { @@ -152,7 +152,7 @@ fn is_ref_iterable<'tcx>( // Using by value won't consume anything if implements_trait(cx, self_ty, trait_id, &[]) && let Some(ty) = - make_normalized_projection(cx.tcx, cx.typing_env(), trait_id, sym!(IntoIter), [self_ty]) + make_normalized_projection(cx.tcx, cx.typing_env(), trait_id, sym::IntoIter, [self_ty]) && ty == res_ty { return Some((AdjustKind::None, self_ty)); @@ -169,7 +169,7 @@ fn is_ref_iterable<'tcx>( }; if implements_trait(cx, self_ty, trait_id, &[]) && let Some(ty) = - make_normalized_projection(cx.tcx, cx.typing_env(), trait_id, sym!(IntoIter), [self_ty]) + make_normalized_projection(cx.tcx, cx.typing_env(), trait_id, sym::IntoIter, [self_ty]) && ty == res_ty { return Some((AdjustKind::reborrow(mutbl), self_ty)); @@ -183,7 +183,7 @@ fn is_ref_iterable<'tcx>( let self_ty = Ty::new_ref(cx.tcx, cx.tcx.lifetimes.re_erased, self_ty, mutbl); if implements_trait(cx, self_ty, trait_id, &[]) && let Some(ty) = - make_normalized_projection(cx.tcx, cx.typing_env(), trait_id, sym!(IntoIter), [self_ty]) + make_normalized_projection(cx.tcx, cx.typing_env(), trait_id, sym::IntoIter, [self_ty]) && ty == res_ty { return Some((AdjustKind::borrow(mutbl), self_ty)); @@ -206,7 +206,7 @@ fn is_ref_iterable<'tcx>( && target != self_ty && implements_trait(cx, target, trait_id, &[]) && let Some(ty) = - make_normalized_projection(cx.tcx, cx.typing_env(), trait_id, sym!(IntoIter), [target]) + make_normalized_projection(cx.tcx, cx.typing_env(), trait_id, sym::IntoIter, [target]) && ty == res_ty { Some((AdjustKind::auto_reborrow(mutbl), target)) @@ -224,7 +224,7 @@ fn is_ref_iterable<'tcx>( if is_copy(cx, target) && implements_trait(cx, target, trait_id, &[]) && let Some(ty) = - make_normalized_projection(cx.tcx, cx.typing_env(), trait_id, sym!(IntoIter), [target]) + make_normalized_projection(cx.tcx, cx.typing_env(), trait_id, sym::IntoIter, [target]) && ty == res_ty { Some((AdjustKind::Deref, target)) @@ -242,7 +242,7 @@ fn is_ref_iterable<'tcx>( if self_ty.is_ref() && implements_trait(cx, target, trait_id, &[]) && let Some(ty) = - make_normalized_projection(cx.tcx, cx.typing_env(), trait_id, sym!(IntoIter), [target]) + make_normalized_projection(cx.tcx, cx.typing_env(), trait_id, sym::IntoIter, [target]) && ty == res_ty { Some((AdjustKind::auto_borrow(mutbl), target)) diff --git a/clippy_lints/src/loops/for_kv_map.rs b/clippy_lints/src/loops/for_kv_map.rs index 185d834becafc..e314bc2068b30 100644 --- a/clippy_lints/src/loops/for_kv_map.rs +++ b/clippy_lints/src/loops/for_kv_map.rs @@ -13,45 +13,45 @@ use rustc_span::sym; pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, pat: &'tcx Pat<'_>, arg: &'tcx Expr<'_>, body: &'tcx Expr<'_>) { let pat_span = pat.span; - if let PatKind::Tuple(pat, _) = pat.kind { - if pat.len() == 2 { - let arg_span = arg.span; - let (new_pat_span, kind, ty, mutbl) = match *cx.typeck_results().expr_ty(arg).kind() { - ty::Ref(_, ty, mutbl) => match (&pat[0].kind, &pat[1].kind) { - (key, _) if pat_is_wild(cx, key, body) => (pat[1].span, "value", ty, mutbl), - (_, value) if pat_is_wild(cx, value, body) => (pat[0].span, "key", ty, Mutability::Not), - _ => return, - }, + if let PatKind::Tuple(pat, _) = pat.kind + && pat.len() == 2 + { + let arg_span = arg.span; + let (new_pat_span, kind, ty, mutbl) = match *cx.typeck_results().expr_ty(arg).kind() { + ty::Ref(_, ty, mutbl) => match (&pat[0].kind, &pat[1].kind) { + (key, _) if pat_is_wild(cx, key, body) => (pat[1].span, "value", ty, mutbl), + (_, value) if pat_is_wild(cx, value, body) => (pat[0].span, "key", ty, Mutability::Not), _ => return, - }; - let mutbl = match mutbl { - Mutability::Not => "", - Mutability::Mut => "_mut", - }; - let arg = match arg.kind { - ExprKind::AddrOf(BorrowKind::Ref, _, expr) => expr, - _ => arg, - }; + }, + _ => return, + }; + let mutbl = match mutbl { + Mutability::Not => "", + Mutability::Mut => "_mut", + }; + let arg = match arg.kind { + ExprKind::AddrOf(BorrowKind::Ref, _, expr) => expr, + _ => arg, + }; - if is_type_diagnostic_item(cx, ty, sym::HashMap) || is_type_diagnostic_item(cx, ty, sym::BTreeMap) { - span_lint_and_then( - cx, - FOR_KV_MAP, - arg_span, - format!("you seem to want to iterate on a map's {kind}s"), - |diag| { - let map = sugg::Sugg::hir(cx, arg, "map"); - diag.multipart_suggestion( - "use the corresponding method", - vec![ - (pat_span, snippet(cx, new_pat_span, kind).into_owned()), - (arg_span, format!("{}.{kind}s{mutbl}()", map.maybe_par())), - ], - Applicability::MachineApplicable, - ); - }, - ); - } + if is_type_diagnostic_item(cx, ty, sym::HashMap) || is_type_diagnostic_item(cx, ty, sym::BTreeMap) { + span_lint_and_then( + cx, + FOR_KV_MAP, + arg_span, + format!("you seem to want to iterate on a map's {kind}s"), + |diag| { + let map = sugg::Sugg::hir(cx, arg, "map"); + diag.multipart_suggestion( + "use the corresponding method", + vec![ + (pat_span, snippet(cx, new_pat_span, kind).into_owned()), + (arg_span, format!("{}.{kind}s{mutbl}()", map.maybe_paren())), + ], + Applicability::MachineApplicable, + ); + }, + ); } } } diff --git a/clippy_lints/src/loops/manual_find.rs b/clippy_lints/src/loops/manual_find.rs index aa8a2934f89bd..35737f3eafe23 100644 --- a/clippy_lints/src/loops/manual_find.rs +++ b/clippy_lints/src/loops/manual_find.rs @@ -3,6 +3,7 @@ use super::utils::make_iterator_snippet; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::snippet_with_applicability; use clippy_utils::ty::implements_trait; +use clippy_utils::usage::contains_return_break_continue_macro; use clippy_utils::{higher, is_res_lang_ctor, path_res, peel_blocks_with_stmt}; use rustc_errors::Applicability; use rustc_hir::def::Res; @@ -35,6 +36,7 @@ pub(super) fn check<'tcx>( && let ExprKind::Call(ctor, [inner_ret]) = ret_value.kind && is_res_lang_ctor(cx, path_res(cx, ctor), LangItem::OptionSome) && path_res(cx, inner_ret) == Res::Local(binding_id) + && !contains_return_break_continue_macro(cond) && let Some((last_stmt, last_ret)) = last_stmt_and_ret(cx, expr) { let mut applicability = Applicability::MachineApplicable; diff --git a/clippy_lints/src/loops/manual_memcpy.rs b/clippy_lints/src/loops/manual_memcpy.rs index 701567a7d84e7..d9c4b526da99e 100644 --- a/clippy_lints/src/loops/manual_memcpy.rs +++ b/clippy_lints/src/loops/manual_memcpy.rs @@ -28,37 +28,37 @@ pub(super) fn check<'tcx>( end: Some(end), limits, }) = higher::Range::hir(arg) - { // the var must be a single name - if let PatKind::Binding(_, canonical_id, _, _) = pat.kind { - let mut starts = vec![Start { - id: canonical_id, - kind: StartKind::Range, - }]; - - // This is one of few ways to return different iterators - // derived from: https://stackoverflow.com/questions/29760668/conditionally-iterate-over-one-of-several-possible-iterators/52064434#52064434 - let mut iter_a = None; - let mut iter_b = None; - - if let ExprKind::Block(block, _) = body.kind { - if let Some(loop_counters) = get_loop_counters(cx, block, expr) { - starts.extend(loop_counters); - } - iter_a = Some(get_assignments(block, &starts)); - } else { - iter_b = Some(get_assignment(body)); + && let PatKind::Binding(_, canonical_id, _, _) = pat.kind + { + let mut starts = vec![Start { + id: canonical_id, + kind: StartKind::Range, + }]; + + // This is one of few ways to return different iterators + // derived from: https://stackoverflow.com/questions/29760668/conditionally-iterate-over-one-of-several-possible-iterators/52064434#52064434 + let mut iter_a = None; + let mut iter_b = None; + + if let ExprKind::Block(block, _) = body.kind { + if let Some(loop_counters) = get_loop_counters(cx, block, expr) { + starts.extend(loop_counters); } + iter_a = Some(get_assignments(block, &starts)); + } else { + iter_b = Some(get_assignment(body)); + } - let assignments = iter_a.into_iter().flatten().chain(iter_b); + let assignments = iter_a.into_iter().flatten().chain(iter_b); - let big_sugg = assignments - // The only statements in the for loops can be indexed assignments from - // indexed retrievals (except increments of loop counters). - .map(|o| { - o.and_then(|(lhs, rhs)| { - let rhs = fetch_cloned_expr(rhs); - if let ExprKind::Index(base_left, idx_left, _) = lhs.kind + let big_sugg = assignments + // The only statements in the for loops can be indexed assignments from + // indexed retrievals (except increments of loop counters). + .map(|o| { + o.and_then(|(lhs, rhs)| { + let rhs = fetch_cloned_expr(rhs); + if let ExprKind::Index(base_left, idx_left, _) = lhs.kind && let ExprKind::Index(base_right, idx_right, _) = rhs.kind && let Some(ty) = get_slice_like_element_ty(cx, cx.typeck_results().expr_ty(base_left)) && get_slice_like_element_ty(cx, cx.typeck_results().expr_ty(base_right)).is_some() @@ -68,42 +68,41 @@ pub(super) fn check<'tcx>( && !local_used_in(cx, canonical_id, base_right) // Source and destination must be different && path_to_local(base_left) != path_to_local(base_right) - { - Some(( - ty, - IndexExpr { - base: base_left, - idx: start_left, - idx_offset: offset_left, - }, - IndexExpr { - base: base_right, - idx: start_right, - idx_offset: offset_right, - }, - )) - } else { - None - } - }) + { + Some(( + ty, + IndexExpr { + base: base_left, + idx: start_left, + idx_offset: offset_left, + }, + IndexExpr { + base: base_right, + idx: start_right, + idx_offset: offset_right, + }, + )) + } else { + None + } }) - .map(|o| o.map(|(ty, dst, src)| build_manual_memcpy_suggestion(cx, start, end, limits, ty, &dst, &src))) - .collect::>>() - .filter(|v| !v.is_empty()) - .map(|v| v.join("\n ")); - - if let Some(big_sugg) = big_sugg { - span_lint_and_sugg( - cx, - MANUAL_MEMCPY, - expr.span, - "it looks like you're manually copying between slices", - "try replacing the loop by", - big_sugg, - Applicability::Unspecified, - ); - return true; - } + }) + .map(|o| o.map(|(ty, dst, src)| build_manual_memcpy_suggestion(cx, start, end, limits, ty, &dst, &src))) + .collect::>>() + .filter(|v| !v.is_empty()) + .map(|v| v.join("\n ")); + + if let Some(big_sugg) = big_sugg { + span_lint_and_sugg( + cx, + MANUAL_MEMCPY, + expr.span, + "it looks like you're manually copying between slices", + "try replacing the loop by", + big_sugg, + Applicability::Unspecified, + ); + return true; } } false @@ -184,7 +183,12 @@ fn build_manual_memcpy_suggestion<'tcx>( { dst_base_str } else { - format!("{dst_base_str}[{}..{}]", dst_offset.maybe_par(), dst_limit.maybe_par()).into() + format!( + "{dst_base_str}[{}..{}]", + dst_offset.maybe_paren(), + dst_limit.maybe_paren() + ) + .into() }; let method_str = if is_copy(cx, elem_ty) { @@ -196,7 +200,12 @@ fn build_manual_memcpy_suggestion<'tcx>( let src = if is_array_length_equal_to_range(cx, start, end, src.base) { src_base_str } else { - format!("{src_base_str}[{}..{}]", src_offset.maybe_par(), src_limit.maybe_par()).into() + format!( + "{src_base_str}[{}..{}]", + src_offset.maybe_paren(), + src_limit.maybe_paren() + ) + .into() }; format!("{dst}.{method_str}(&{src});") diff --git a/clippy_lints/src/loops/manual_while_let_some.rs b/clippy_lints/src/loops/manual_while_let_some.rs index 4473a3343c7c6..9527e258db8ab 100644 --- a/clippy_lints/src/loops/manual_while_let_some.rs +++ b/clippy_lints/src/loops/manual_while_let_some.rs @@ -81,15 +81,15 @@ fn check_local(cx: &LateContext<'_>, stmt: &Stmt<'_>, is_empty_recv: &Expr<'_>, } fn check_call_arguments(cx: &LateContext<'_>, stmt: &Stmt<'_>, is_empty_recv: &Expr<'_>, loop_span: Span) { - if let StmtKind::Semi(expr) | StmtKind::Expr(expr) = stmt.kind { - if let ExprKind::MethodCall(.., args, _) | ExprKind::Call(_, args) = expr.kind { - let offending_arg = args - .iter() - .find_map(|arg| is_vec_pop_unwrap(cx, arg, is_empty_recv).then_some(arg.span)); + if let StmtKind::Semi(expr) | StmtKind::Expr(expr) = stmt.kind + && let ExprKind::MethodCall(.., args, _) | ExprKind::Call(_, args) = expr.kind + { + let offending_arg = args + .iter() + .find_map(|arg| is_vec_pop_unwrap(cx, arg, is_empty_recv).then_some(arg.span)); - if let Some(offending_arg) = offending_arg { - report_lint(cx, offending_arg, PopStmt::Anonymous, loop_span, is_empty_recv.span); - } + if let Some(offending_arg) = offending_arg { + report_lint(cx, offending_arg, PopStmt::Anonymous, loop_span, is_empty_recv.span); } } } diff --git a/clippy_lints/src/loops/mod.rs b/clippy_lints/src/loops/mod.rs index 4b0bf5a4b3c94..2b66827e82eeb 100644 --- a/clippy_lints/src/loops/mod.rs +++ b/clippy_lints/src/loops/mod.rs @@ -1,3 +1,4 @@ +mod char_indices_as_byte_indices; mod empty_loop; mod explicit_counter_loop; mod explicit_into_iter_loop; @@ -740,6 +741,49 @@ declare_clippy_lint! { "manually filling a slice with a value" } +declare_clippy_lint! { + /// ### What it does + /// Checks for usage of a character position yielded by `.chars().enumerate()` in a context where a **byte index** is expected, + /// such as an argument to a specific `str` method or indexing into a `str` or `String`. + /// + /// ### Why is this bad? + /// A character (more specifically, a Unicode scalar value) that is yielded by `str::chars` can take up multiple bytes, + /// so a character position does not necessarily have the same byte index at which the character is stored. + /// Thus, using the character position where a byte index is expected can unexpectedly return wrong values + /// or panic when the string consists of multibyte characters. + /// + /// For example, the character `a` in `äa` is stored at byte index 2 but has the character position 1. + /// Using the character position 1 to index into the string will lead to a panic as it is in the middle of the first character. + /// + /// Instead of `.chars().enumerate()`, the correct iterator to use is `.char_indices()`, which yields byte indices. + /// + /// This pattern is technically fine if the strings are known to only use the ASCII subset, + /// though in those cases it would be better to use `bytes()` directly to make the intent clearer, + /// but there is also no downside to just using `.char_indices()` directly and supporting non-ASCII strings. + /// + /// You may also want to read the [chapter on strings in the Rust Book](https://doc.rust-lang.org/book/ch08-02-strings.html) + /// which goes into this in more detail. + /// + /// ### Example + /// ```no_run + /// # let s = "..."; + /// for (idx, c) in s.chars().enumerate() { + /// let _ = s[idx..]; // ⚠️ Panics for strings consisting of multibyte characters + /// } + /// ``` + /// Use instead: + /// ```no_run + /// # let s = "..."; + /// for (idx, c) in s.char_indices() { + /// let _ = s[idx..]; + /// } + /// ``` + #[clippy::version = "1.83.0"] + pub CHAR_INDICES_AS_BYTE_INDICES, + correctness, + "using the character position yielded by `.chars().enumerate()` in a context where a byte index is expected" +} + pub struct Loops { msrv: Msrv, enforce_iter_loop_reborrow: bool, @@ -777,6 +821,7 @@ impl_lint_pass!(Loops => [ UNUSED_ENUMERATE_INDEX, INFINITE_LOOP, MANUAL_SLICE_FILL, + CHAR_INDICES_AS_BYTE_INDICES, ]); impl<'tcx> LateLintPass<'tcx> for Loops { @@ -860,6 +905,7 @@ impl Loops { manual_flatten::check(cx, pat, arg, body, span, self.msrv); manual_find::check(cx, pat, arg, body, span, expr); unused_enumerate_index::check(cx, pat, arg, body); + char_indices_as_byte_indices::check(cx, pat, arg, body); } fn check_for_loop_arg(&self, cx: &LateContext<'_>, _: &Pat<'_>, arg: &Expr<'_>) { diff --git a/clippy_lints/src/loops/mut_range_bound.rs b/clippy_lints/src/loops/mut_range_bound.rs index a24dd44790e1f..70ca452013f91 100644 --- a/clippy_lints/src/loops/mut_range_bound.rs +++ b/clippy_lints/src/loops/mut_range_bound.rs @@ -82,14 +82,14 @@ impl<'tcx> Delegate<'tcx> for MutatePairDelegate<'_, 'tcx> { fn use_cloned(&mut self, _: &PlaceWithHirId<'tcx>, _: HirId) {} fn borrow(&mut self, cmt: &PlaceWithHirId<'tcx>, diag_expr_id: HirId, bk: ty::BorrowKind) { - if bk == ty::BorrowKind::Mutable { - if let PlaceBase::Local(id) = cmt.place.base { - if Some(id) == self.hir_id_low && !BreakAfterExprVisitor::is_found(self.cx, diag_expr_id) { - self.span_low = Some(self.cx.tcx.hir_span(diag_expr_id)); - } - if Some(id) == self.hir_id_high && !BreakAfterExprVisitor::is_found(self.cx, diag_expr_id) { - self.span_high = Some(self.cx.tcx.hir_span(diag_expr_id)); - } + if bk == ty::BorrowKind::Mutable + && let PlaceBase::Local(id) = cmt.place.base + { + if Some(id) == self.hir_id_low && !BreakAfterExprVisitor::is_found(self.cx, diag_expr_id) { + self.span_low = Some(self.cx.tcx.hir_span(diag_expr_id)); + } + if Some(id) == self.hir_id_high && !BreakAfterExprVisitor::is_found(self.cx, diag_expr_id) { + self.span_high = Some(self.cx.tcx.hir_span(diag_expr_id)); } } } diff --git a/clippy_lints/src/loops/needless_range_loop.rs b/clippy_lints/src/loops/needless_range_loop.rs index 0f62183eb33d6..7837b18bcd36c 100644 --- a/clippy_lints/src/loops/needless_range_loop.rs +++ b/clippy_lints/src/loops/needless_range_loop.rs @@ -31,155 +31,154 @@ pub(super) fn check<'tcx>( ref end, limits, }) = higher::Range::hir(arg) - { // the var must be a single name - if let PatKind::Binding(_, canonical_id, ident, _) = pat.kind { - let mut visitor = VarVisitor { - cx, - var: canonical_id, - indexed_mut: FxHashSet::default(), - indexed_indirectly: FxHashMap::default(), - indexed_directly: FxIndexMap::default(), - referenced: FxHashSet::default(), - nonindex: false, - prefer_mutable: false, - }; - walk_expr(&mut visitor, body); - - // linting condition: we only indexed one variable, and indexed it directly - if visitor.indexed_indirectly.is_empty() && visitor.indexed_directly.len() == 1 { - let (indexed, (indexed_extent, indexed_ty)) = visitor - .indexed_directly - .into_iter() - .next() - .expect("already checked that we have exactly 1 element"); + && let PatKind::Binding(_, canonical_id, ident, _) = pat.kind + { + let mut visitor = VarVisitor { + cx, + var: canonical_id, + indexed_mut: FxHashSet::default(), + indexed_indirectly: FxHashMap::default(), + indexed_directly: FxIndexMap::default(), + referenced: FxHashSet::default(), + nonindex: false, + prefer_mutable: false, + }; + walk_expr(&mut visitor, body); - // ensure that the indexed variable was declared before the loop, see #601 - if let Some(indexed_extent) = indexed_extent { - let parent_def_id = cx.tcx.hir_get_parent_item(expr.hir_id); - let region_scope_tree = cx.tcx.region_scope_tree(parent_def_id); - let pat_extent = region_scope_tree.var_scope(pat.hir_id.local_id).unwrap(); - if region_scope_tree.is_subscope_of(indexed_extent, pat_extent) { - return; - } - } + // linting condition: we only indexed one variable, and indexed it directly + if visitor.indexed_indirectly.is_empty() && visitor.indexed_directly.len() == 1 { + let (indexed, (indexed_extent, indexed_ty)) = visitor + .indexed_directly + .into_iter() + .next() + .expect("already checked that we have exactly 1 element"); - // don't lint if the container that is indexed does not have .iter() method - let has_iter = has_iter_method(cx, indexed_ty); - if has_iter.is_none() { + // ensure that the indexed variable was declared before the loop, see #601 + if let Some(indexed_extent) = indexed_extent { + let parent_def_id = cx.tcx.hir_get_parent_item(expr.hir_id); + let region_scope_tree = cx.tcx.region_scope_tree(parent_def_id); + let pat_extent = region_scope_tree.var_scope(pat.hir_id.local_id).unwrap(); + if region_scope_tree.is_subscope_of(indexed_extent, pat_extent) { return; } + } - // don't lint if the container that is indexed into is also used without - // indexing - if visitor.referenced.contains(&indexed) { - return; - } + // don't lint if the container that is indexed does not have .iter() method + let has_iter = has_iter_method(cx, indexed_ty); + if has_iter.is_none() { + return; + } - let starts_at_zero = is_integer_const(cx, start, 0); + // don't lint if the container that is indexed into is also used without + // indexing + if visitor.referenced.contains(&indexed) { + return; + } - let skip = if starts_at_zero { - String::new() - } else if visitor.indexed_mut.contains(&indexed) && contains_name(indexed, start, cx) { - return; - } else { - format!(".skip({})", snippet(cx, start.span, "..")) - }; + let starts_at_zero = is_integer_const(cx, start, 0); - let mut end_is_start_plus_val = false; + let skip = if starts_at_zero { + String::new() + } else if visitor.indexed_mut.contains(&indexed) && contains_name(indexed, start, cx) { + return; + } else { + format!(".skip({})", snippet(cx, start.span, "..")) + }; - let take = if let Some(end) = *end { - let mut take_expr = end; + let mut end_is_start_plus_val = false; - if let ExprKind::Binary(ref op, left, right) = end.kind { - if op.node == BinOpKind::Add { - let start_equal_left = SpanlessEq::new(cx).eq_expr(start, left); - let start_equal_right = SpanlessEq::new(cx).eq_expr(start, right); + let take = if let Some(end) = *end { + let mut take_expr = end; - if start_equal_left { - take_expr = right; - } else if start_equal_right { - take_expr = left; - } + if let ExprKind::Binary(ref op, left, right) = end.kind + && op.node == BinOpKind::Add + { + let start_equal_left = SpanlessEq::new(cx).eq_expr(start, left); + let start_equal_right = SpanlessEq::new(cx).eq_expr(start, right); - end_is_start_plus_val = start_equal_left | start_equal_right; - } + if start_equal_left { + take_expr = right; + } else if start_equal_right { + take_expr = left; } - if is_len_call(end, indexed) || is_end_eq_array_len(cx, end, limits, indexed_ty) { - String::new() - } else if visitor.indexed_mut.contains(&indexed) && contains_name(indexed, take_expr, cx) { - return; - } else { - match limits { - ast::RangeLimits::Closed => { - let take_expr = sugg::Sugg::hir(cx, take_expr, ""); - format!(".take({})", take_expr + sugg::ONE) - }, - ast::RangeLimits::HalfOpen => { - format!(".take({})", snippet(cx, take_expr.span, "..")) - }, - } - } - } else { - String::new() - }; + end_is_start_plus_val = start_equal_left | start_equal_right; + } - let (ref_mut, method) = if visitor.indexed_mut.contains(&indexed) { - ("mut ", "iter_mut") + if is_len_call(end, indexed) || is_end_eq_array_len(cx, end, limits, indexed_ty) { + String::new() + } else if visitor.indexed_mut.contains(&indexed) && contains_name(indexed, take_expr, cx) { + return; } else { - ("", "iter") - }; + match limits { + ast::RangeLimits::Closed => { + let take_expr = sugg::Sugg::hir(cx, take_expr, ""); + format!(".take({})", take_expr + sugg::ONE) + }, + ast::RangeLimits::HalfOpen => { + format!(".take({})", snippet(cx, take_expr.span, "..")) + }, + } + } + } else { + String::new() + }; - let take_is_empty = take.is_empty(); - let mut method_1 = take; - let mut method_2 = skip; + let (ref_mut, method) = if visitor.indexed_mut.contains(&indexed) { + ("mut ", "iter_mut") + } else { + ("", "iter") + }; - if end_is_start_plus_val { - mem::swap(&mut method_1, &mut method_2); - } + let take_is_empty = take.is_empty(); + let mut method_1 = take; + let mut method_2 = skip; - if visitor.nonindex { - span_lint_and_then( - cx, - NEEDLESS_RANGE_LOOP, - arg.span, - format!("the loop variable `{}` is used to index `{indexed}`", ident.name), - |diag| { - diag.multipart_suggestion( - "consider using an iterator and enumerate()", - vec![ - (pat.span, format!("({}, )", ident.name)), - ( - arg.span, - format!("{indexed}.{method}().enumerate(){method_1}{method_2}"), - ), - ], - Applicability::HasPlaceholders, - ); - }, - ); + if end_is_start_plus_val { + mem::swap(&mut method_1, &mut method_2); + } + + if visitor.nonindex { + span_lint_and_then( + cx, + NEEDLESS_RANGE_LOOP, + arg.span, + format!("the loop variable `{}` is used to index `{indexed}`", ident.name), + |diag| { + diag.multipart_suggestion( + "consider using an iterator and enumerate()", + vec![ + (pat.span, format!("({}, )", ident.name)), + ( + arg.span, + format!("{indexed}.{method}().enumerate(){method_1}{method_2}"), + ), + ], + Applicability::HasPlaceholders, + ); + }, + ); + } else { + let repl = if starts_at_zero && take_is_empty { + format!("&{ref_mut}{indexed}") } else { - let repl = if starts_at_zero && take_is_empty { - format!("&{ref_mut}{indexed}") - } else { - format!("{indexed}.{method}(){method_1}{method_2}") - }; + format!("{indexed}.{method}(){method_1}{method_2}") + }; - span_lint_and_then( - cx, - NEEDLESS_RANGE_LOOP, - arg.span, - format!("the loop variable `{}` is only used to index `{indexed}`", ident.name), - |diag| { - diag.multipart_suggestion( - "consider using an iterator", - vec![(pat.span, "".to_string()), (arg.span, repl)], - Applicability::HasPlaceholders, - ); - }, - ); - } + span_lint_and_then( + cx, + NEEDLESS_RANGE_LOOP, + arg.span, + format!("the loop variable `{}` is only used to index `{indexed}`", ident.name), + |diag| { + diag.multipart_suggestion( + "consider using an iterator", + vec![(pat.span, "".to_string()), (arg.span, repl)], + Applicability::HasPlaceholders, + ); + }, + ); } } } @@ -346,10 +345,10 @@ impl<'tcx> Visitor<'tcx> for VarVisitor<'_, 'tcx> { for expr in args { let ty = self.cx.typeck_results().expr_ty_adjusted(expr); self.prefer_mutable = false; - if let ty::Ref(_, _, mutbl) = *ty.kind() { - if mutbl == Mutability::Mut { - self.prefer_mutable = true; - } + if let ty::Ref(_, _, mutbl) = *ty.kind() + && mutbl == Mutability::Mut + { + self.prefer_mutable = true; } self.visit_expr(expr); } @@ -361,10 +360,10 @@ impl<'tcx> Visitor<'tcx> for VarVisitor<'_, 'tcx> { iter::once(receiver).chain(args.iter()), ) { self.prefer_mutable = false; - if let ty::Ref(_, _, mutbl) = *ty.kind() { - if mutbl == Mutability::Mut { - self.prefer_mutable = true; - } + if let ty::Ref(_, _, mutbl) = *ty.kind() + && mutbl == Mutability::Mut + { + self.prefer_mutable = true; } self.visit_expr(expr); } diff --git a/clippy_lints/src/loops/never_loop.rs b/clippy_lints/src/loops/never_loop.rs index c3a2a38b5ec25..69c84bc7038ef 100644 --- a/clippy_lints/src/loops/never_loop.rs +++ b/clippy_lints/src/loops/never_loop.rs @@ -244,10 +244,10 @@ fn never_loop_expr<'tcx>( }); combine_seq(first, || { // checks if break targets a block instead of a loop - if let ExprKind::Break(Destination { target_id: Ok(t), .. }, _) = expr.kind { - if let Some((_, reachable)) = local_labels.iter_mut().find(|(label, _)| *label == t) { - *reachable = true; - } + if let ExprKind::Break(Destination { target_id: Ok(t), .. }, _) = expr.kind + && let Some((_, reachable)) = local_labels.iter_mut().find(|(label, _)| *label == t) + { + *reachable = true; } NeverLoopResult::Diverging }) diff --git a/clippy_lints/src/loops/utils.rs b/clippy_lints/src/loops/utils.rs index 3c6fbef2bda8c..2f6950b4380c3 100644 --- a/clippy_lints/src/loops/utils.rs +++ b/clippy_lints/src/loops/utils.rs @@ -3,9 +3,7 @@ use clippy_utils::{get_parent_expr, is_integer_const, path_to_local, path_to_loc use rustc_ast::ast::{LitIntType, LitKind}; use rustc_errors::Applicability; use rustc_hir::intravisit::{Visitor, walk_expr, walk_local}; -use rustc_hir::{ - AssignOpKind, BorrowKind, Expr, ExprKind, HirId, HirIdMap, LetStmt, Mutability, PatKind -}; +use rustc_hir::{AssignOpKind, BorrowKind, Expr, ExprKind, HirId, HirIdMap, LetStmt, Mutability, PatKind}; use rustc_lint::LateContext; use rustc_middle::hir::nested_filter; use rustc_middle::ty::{self, Ty}; @@ -265,7 +263,7 @@ pub(super) fn make_iterator_snippet(cx: &LateContext<'_>, arg: &Expr<'_>, applic if impls_iterator { format!( "{}", - sugg::Sugg::hir_with_applicability(cx, arg, "_", applic_ref).maybe_par() + sugg::Sugg::hir_with_applicability(cx, arg, "_", applic_ref).maybe_paren() ) } else { // (&x).into_iter() ==> x.iter() @@ -283,12 +281,12 @@ pub(super) fn make_iterator_snippet(cx: &LateContext<'_>, arg: &Expr<'_>, applic }; format!( "{}.{method_name}()", - sugg::Sugg::hir_with_applicability(cx, caller, "_", applic_ref).maybe_par(), + sugg::Sugg::hir_with_applicability(cx, caller, "_", applic_ref).maybe_paren(), ) }, _ => format!( "{}.into_iter()", - sugg::Sugg::hir_with_applicability(cx, arg, "_", applic_ref).maybe_par() + sugg::Sugg::hir_with_applicability(cx, arg, "_", applic_ref).maybe_paren() ), } } diff --git a/clippy_lints/src/macro_metavars_in_unsafe.rs b/clippy_lints/src/macro_metavars_in_unsafe.rs index df6e85611fb2c..9071c9c95f9d7 100644 --- a/clippy_lints/src/macro_metavars_in_unsafe.rs +++ b/clippy_lints/src/macro_metavars_in_unsafe.rs @@ -5,7 +5,8 @@ use itertools::Itertools; use rustc_hir::def_id::LocalDefId; use rustc_hir::intravisit::{Visitor, walk_block, walk_expr, walk_stmt}; use rustc_hir::{BlockCheckMode, Expr, ExprKind, HirId, Stmt, UnsafeSource}; -use rustc_lint::{LateContext, LateLintPass}; +use rustc_lint::{LateContext, LateLintPass, Level, LintContext}; +use rustc_middle::lint::LevelAndSource; use rustc_session::impl_lint_pass; use rustc_span::{Span, SyntaxContext, sym}; use std::collections::BTreeMap; @@ -249,6 +250,20 @@ impl<'tcx> LateLintPass<'tcx> for ExprMetavarsInUnsafe { }) .flatten() .copied() + .inspect(|&unsafe_block| { + if let LevelAndSource { + level: Level::Expect, + lint_id: Some(id), + .. + } = cx.tcx.lint_level_at_node(MACRO_METAVARS_IN_UNSAFE, unsafe_block) + { + // Since we're going to deduplicate expanded unsafe blocks by its enclosing macro definition soon, + // which would lead to unfulfilled `#[expect()]`s in all other unsafe blocks that are filtered out + // except for the one we emit the warning at, we must manually fulfill the lint + // for all unsafe blocks here. + cx.fulfill_expectation(id); + } + }) .map(|id| { // Remove the syntax context to hide "in this macro invocation" in the diagnostic. // The invocation doesn't matter. Also we want to dedupe by the unsafe block and not by anything diff --git a/clippy_lints/src/manual_abs_diff.rs b/clippy_lints/src/manual_abs_diff.rs new file mode 100644 index 0000000000000..c515e41f242f5 --- /dev/null +++ b/clippy_lints/src/manual_abs_diff.rs @@ -0,0 +1,152 @@ +use clippy_config::Conf; +use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::higher::If; +use clippy_utils::msrvs::{self, Msrv}; +use clippy_utils::source::HasSession as _; +use clippy_utils::sugg::Sugg; +use clippy_utils::ty::is_type_diagnostic_item; +use clippy_utils::{eq_expr_value, peel_blocks, span_contains_comment}; +use rustc_errors::Applicability; +use rustc_hir::{BinOpKind, Expr, ExprKind}; +use rustc_lint::{LateContext, LateLintPass}; +use rustc_middle::ty::{self, Ty}; +use rustc_session::impl_lint_pass; +use rustc_span::sym; + +declare_clippy_lint! { + /// ### What it does + /// Detects patterns like `if a > b { a - b } else { b - a }` and suggests using `a.abs_diff(b)`. + /// + /// ### Why is this bad? + /// Using `abs_diff` is shorter, more readable, and avoids control flow. + /// + /// ### Examples + /// ```no_run + /// # let (a, b) = (5_usize, 3_usize); + /// if a > b { + /// a - b + /// } else { + /// b - a + /// } + /// # ; + /// ``` + /// Use instead: + /// ```no_run + /// # let (a, b) = (5_usize, 3_usize); + /// a.abs_diff(b) + /// # ; + /// ``` + #[clippy::version = "1.86.0"] + pub MANUAL_ABS_DIFF, + complexity, + "using an if-else pattern instead of `abs_diff`" +} + +impl_lint_pass!(ManualAbsDiff => [MANUAL_ABS_DIFF]); + +pub struct ManualAbsDiff { + msrv: Msrv, +} + +impl ManualAbsDiff { + pub fn new(conf: &'static Conf) -> Self { + Self { msrv: conf.msrv } + } +} + +impl<'tcx> LateLintPass<'tcx> for ManualAbsDiff { + fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) { + if !expr.span.from_expansion() + && let Some(if_expr) = If::hir(expr) + && let Some(r#else) = if_expr.r#else + && let ExprKind::Binary(op, rhs, lhs) = if_expr.cond.kind + && let (BinOpKind::Gt | BinOpKind::Ge, mut a, mut b) | (BinOpKind::Lt | BinOpKind::Le, mut b, mut a) = + (op.node, rhs, lhs) + && let Some(ty) = self.are_ty_eligible(cx, a, b) + && is_sub_expr(cx, if_expr.then, a, b, ty) + && is_sub_expr(cx, r#else, b, a, ty) + { + span_lint_and_then( + cx, + MANUAL_ABS_DIFF, + expr.span, + "manual absolute difference pattern without using `abs_diff`", + |diag| { + if is_unsuffixed_numeral_lit(a) && !is_unsuffixed_numeral_lit(b) { + (a, b) = (b, a); + } + let applicability = { + let source_map = cx.sess().source_map(); + if span_contains_comment(source_map, if_expr.then.span) + || span_contains_comment(source_map, r#else.span) + { + Applicability::MaybeIncorrect + } else { + Applicability::MachineApplicable + } + }; + let sugg = format!( + "{}.abs_diff({})", + Sugg::hir(cx, a, "..").maybe_paren(), + Sugg::hir(cx, b, "..") + ); + diag.span_suggestion(expr.span, "replace with `abs_diff`", sugg, applicability); + }, + ); + } + } +} + +impl ManualAbsDiff { + /// Returns a type if `a` and `b` are both of it, and this lint can be applied to that + /// type (currently, any primitive int, or a `Duration`) + fn are_ty_eligible<'tcx>(&self, cx: &LateContext<'tcx>, a: &Expr<'_>, b: &Expr<'_>) -> Option> { + let is_int = |ty: Ty<'_>| matches!(ty.kind(), ty::Uint(_) | ty::Int(_)) && self.msrv.meets(cx, msrvs::ABS_DIFF); + let is_duration = + |ty| is_type_diagnostic_item(cx, ty, sym::Duration) && self.msrv.meets(cx, msrvs::DURATION_ABS_DIFF); + + let a_ty = cx.typeck_results().expr_ty(a).peel_refs(); + (a_ty == cx.typeck_results().expr_ty(b).peel_refs() && (is_int(a_ty) || is_duration(a_ty))).then_some(a_ty) + } +} + +/// Checks if the given expression is a subtraction operation between two expected expressions, +/// i.e. if `expr` is `{expected_a} - {expected_b}`. +/// +/// If `expected_ty` is a signed primitive integer, this function will only return `Some` if the +/// subtraction expr is wrapped in a cast to the equivalent unsigned int. +fn is_sub_expr( + cx: &LateContext<'_>, + expr: &Expr<'_>, + expected_a: &Expr<'_>, + expected_b: &Expr<'_>, + expected_ty: Ty<'_>, +) -> bool { + let expr = peel_blocks(expr).kind; + + if let ty::Int(ty) = expected_ty.kind() { + let unsigned = Ty::new_uint(cx.tcx, ty.to_unsigned()); + + return if let ExprKind::Cast(expr, cast_ty) = expr + && cx.typeck_results().node_type(cast_ty.hir_id) == unsigned + { + is_sub_expr(cx, expr, expected_a, expected_b, unsigned) + } else { + false + }; + } + + if let ExprKind::Binary(op, a, b) = expr + && let BinOpKind::Sub = op.node + && eq_expr_value(cx, a, expected_a) + && eq_expr_value(cx, b, expected_b) + { + true + } else { + false + } +} + +fn is_unsuffixed_numeral_lit(expr: &Expr<'_>) -> bool { + matches!(expr.kind, ExprKind::Lit(lit) if lit.node.is_numeric() && lit.node.is_unsuffixed()) +} diff --git a/clippy_lints/src/manual_assert.rs b/clippy_lints/src/manual_assert.rs index 83c16d4466d06..8378e15c581c6 100644 --- a/clippy_lints/src/manual_assert.rs +++ b/clippy_lints/src/manual_assert.rs @@ -60,7 +60,7 @@ impl<'tcx> LateLintPass<'tcx> for ManualAssert { ExprKind::Unary(UnOp::Not, e) => (e, ""), _ => (cond, "!"), }; - let cond_sugg = sugg::Sugg::hir_with_applicability(cx, cond, "..", &mut applicability).maybe_par(); + let cond_sugg = sugg::Sugg::hir_with_applicability(cx, cond, "..", &mut applicability).maybe_paren(); let semicolon = if is_parent_stmt(cx, expr.hir_id) { ";" } else { "" }; let sugg = format!("assert!({not}{cond_sugg}, {format_args_snip}){semicolon}"); // we show to the user the suggestion without the comments, but when applying the fix, include the diff --git a/clippy_lints/src/manual_clamp.rs b/clippy_lints/src/manual_clamp.rs index 50c8331eebab4..02afe9f0997de 100644 --- a/clippy_lints/src/manual_clamp.rs +++ b/clippy_lints/src/manual_clamp.rs @@ -181,7 +181,7 @@ fn maybe_emit_suggestion<'tcx>(cx: &LateContext<'tcx>, suggestion: &ClampSuggest make_assignment, hir_with_ignore_attr, } = suggestion; - let input = Sugg::hir(cx, input, "..").maybe_par(); + let input = Sugg::hir(cx, input, "..").maybe_paren(); let min = Sugg::hir(cx, min, ".."); let max = Sugg::hir(cx, max, ".."); let semicolon = if make_assignment.is_some() { ";" } else { "" }; diff --git a/clippy_lints/src/manual_div_ceil.rs b/clippy_lints/src/manual_div_ceil.rs index 9944c4f880481..444ecd5d2bb95 100644 --- a/clippy_lints/src/manual_div_ceil.rs +++ b/clippy_lints/src/manual_div_ceil.rs @@ -1,8 +1,9 @@ -use clippy_utils::SpanlessEq; +use clippy_config::Conf; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_applicability; use clippy_utils::sugg::{Sugg, has_enclosing_paren}; +use clippy_utils::{SpanlessEq, sym}; use rustc_ast::{BinOpKind, LitIntType, LitKind, UnOp}; use rustc_data_structures::packed::Pu128; use rustc_errors::Applicability; @@ -11,9 +12,6 @@ use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::{self}; use rustc_session::impl_lint_pass; use rustc_span::source_map::Spanned; -use rustc_span::symbol::Symbol; - -use clippy_config::Conf; declare_clippy_lint! { /// ### What it does @@ -141,8 +139,7 @@ fn check_int_ty_and_feature(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { let expr_ty = cx.typeck_results().expr_ty(expr); match expr_ty.peel_refs().kind() { ty::Uint(_) => true, - ty::Int(_) => cx.tcx.features().enabled(Symbol::intern("int_roundings")), - + ty::Int(_) => cx.tcx.features().enabled(sym::int_roundings), _ => false, } } @@ -167,7 +164,7 @@ fn build_suggestion( rhs: &Expr<'_>, applicability: &mut Applicability, ) { - let dividend_sugg = Sugg::hir_with_applicability(cx, lhs, "..", applicability).maybe_par(); + let dividend_sugg = Sugg::hir_with_applicability(cx, lhs, "..", applicability).maybe_paren(); let type_suffix = if cx.typeck_results().expr_ty(lhs).is_numeric() && matches!( lhs.kind, diff --git a/clippy_lints/src/manual_is_ascii_check.rs b/clippy_lints/src/manual_is_ascii_check.rs index faf01a276a131..8ab49bd2ea8ea 100644 --- a/clippy_lints/src/manual_is_ascii_check.rs +++ b/clippy_lints/src/manual_is_ascii_check.rs @@ -148,7 +148,7 @@ fn check_is_ascii( }; let default_snip = ".."; let mut app = Applicability::MachineApplicable; - let recv = Sugg::hir_with_context(cx, recv, span.ctxt(), default_snip, &mut app).maybe_par(); + let recv = Sugg::hir_with_context(cx, recv, span.ctxt(), default_snip, &mut app).maybe_paren(); let mut suggestion = vec![(span, format!("{recv}.{sugg}()"))]; if let Some((ty_span, ty)) = ty_sugg { suggestion.push((ty_span, format!("{recv}: {ty}"))); diff --git a/clippy_lints/src/manual_is_power_of_two.rs b/clippy_lints/src/manual_is_power_of_two.rs index 841adfec4624b..b4cd988329d32 100644 --- a/clippy_lints/src/manual_is_power_of_two.rs +++ b/clippy_lints/src/manual_is_power_of_two.rs @@ -1,13 +1,14 @@ -use clippy_utils::SpanlessEq; +use clippy_config::Conf; use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::source::snippet_with_applicability; -use rustc_ast::LitKind; -use rustc_data_structures::packed::Pu128; +use clippy_utils::msrvs::{self, Msrv}; +use clippy_utils::sugg::Sugg; +use clippy_utils::ty::ty_from_hir_ty; +use clippy_utils::{SpanlessEq, is_in_const_context, is_integer_literal}; use rustc_errors::Applicability; -use rustc_hir::{BinOpKind, Expr, ExprKind}; +use rustc_hir::{BinOpKind, Expr, ExprKind, QPath}; use rustc_lint::{LateContext, LateLintPass}; -use rustc_middle::ty::Uint; -use rustc_session::declare_lint_pass; +use rustc_middle::ty; +use rustc_session::impl_lint_pass; declare_clippy_lint! { /// ### What it does @@ -33,112 +34,111 @@ declare_clippy_lint! { "manually reimplementing `is_power_of_two`" } -declare_lint_pass!(ManualIsPowerOfTwo => [MANUAL_IS_POWER_OF_TWO]); +pub struct ManualIsPowerOfTwo { + msrv: Msrv, +} -impl LateLintPass<'_> for ManualIsPowerOfTwo { - fn check_expr(&mut self, cx: &LateContext<'_>, expr: &Expr<'_>) { - let mut applicability = Applicability::MachineApplicable; +impl_lint_pass!(ManualIsPowerOfTwo => [MANUAL_IS_POWER_OF_TWO]); - if let ExprKind::Binary(bin_op, left, right) = expr.kind - && bin_op.node == BinOpKind::Eq - { - // a.count_ones() == 1 - if let ExprKind::MethodCall(method_name, receiver, [], _) = left.kind - && method_name.ident.as_str() == "count_ones" - && let &Uint(_) = cx.typeck_results().expr_ty(receiver).kind() - && check_lit(right, 1) - { - build_sugg(cx, expr, receiver, &mut applicability); - } +impl ManualIsPowerOfTwo { + pub fn new(conf: &'static Conf) -> Self { + Self { msrv: conf.msrv } + } - // 1 == a.count_ones() - if let ExprKind::MethodCall(method_name, receiver, [], _) = right.kind - && method_name.ident.as_str() == "count_ones" - && let &Uint(_) = cx.typeck_results().expr_ty(receiver).kind() - && check_lit(left, 1) - { - build_sugg(cx, expr, receiver, &mut applicability); - } + fn build_sugg(&self, cx: &LateContext<'_>, expr: &Expr<'_>, receiver: &Expr<'_>) { + if is_in_const_context(cx) && !self.msrv.meets(cx, msrvs::CONST_IS_POWER_OF_TWO) { + return; + } - // a & (a - 1) == 0 - if let ExprKind::Binary(op1, left1, right1) = left.kind - && op1.node == BinOpKind::BitAnd - && let ExprKind::Binary(op2, left2, right2) = right1.kind - && op2.node == BinOpKind::Sub - && check_eq_expr(cx, left1, left2) - && let &Uint(_) = cx.typeck_results().expr_ty(left1).kind() - && check_lit(right2, 1) - && check_lit(right, 0) - { - build_sugg(cx, expr, left1, &mut applicability); - } + let mut applicability = Applicability::MachineApplicable; + let snippet = Sugg::hir_with_applicability(cx, receiver, "_", &mut applicability); - // (a - 1) & a == 0; - if let ExprKind::Binary(op1, left1, right1) = left.kind - && op1.node == BinOpKind::BitAnd - && let ExprKind::Binary(op2, left2, right2) = left1.kind - && op2.node == BinOpKind::Sub - && check_eq_expr(cx, right1, left2) - && let &Uint(_) = cx.typeck_results().expr_ty(right1).kind() - && check_lit(right2, 1) - && check_lit(right, 0) - { - build_sugg(cx, expr, right1, &mut applicability); - } + span_lint_and_sugg( + cx, + MANUAL_IS_POWER_OF_TWO, + expr.span, + "manually reimplementing `is_power_of_two`", + "consider using `.is_power_of_two()`", + format!("{}.is_power_of_two()", snippet.maybe_paren()), + applicability, + ); + } +} - // 0 == a & (a - 1); - if let ExprKind::Binary(op1, left1, right1) = right.kind - && op1.node == BinOpKind::BitAnd - && let ExprKind::Binary(op2, left2, right2) = right1.kind - && op2.node == BinOpKind::Sub - && check_eq_expr(cx, left1, left2) - && let &Uint(_) = cx.typeck_results().expr_ty(left1).kind() - && check_lit(right2, 1) - && check_lit(left, 0) +impl<'tcx> LateLintPass<'tcx> for ManualIsPowerOfTwo { + fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &Expr<'tcx>) { + if !expr.span.from_expansion() + && let Some((lhs, rhs)) = unexpanded_binop_operands(expr, BinOpKind::Eq) + { + if let Some(a) = count_ones_receiver(cx, lhs) + && is_integer_literal(rhs, 1) { - build_sugg(cx, expr, left1, &mut applicability); - } - - // 0 == (a - 1) & a - if let ExprKind::Binary(op1, left1, right1) = right.kind - && op1.node == BinOpKind::BitAnd - && let ExprKind::Binary(op2, left2, right2) = left1.kind - && op2.node == BinOpKind::Sub - && check_eq_expr(cx, right1, left2) - && let &Uint(_) = cx.typeck_results().expr_ty(right1).kind() - && check_lit(right2, 1) - && check_lit(left, 0) + self.build_sugg(cx, expr, a); + } else if let Some(a) = count_ones_receiver(cx, rhs) + && is_integer_literal(lhs, 1) + { + self.build_sugg(cx, expr, a); + } else if is_integer_literal(rhs, 0) + && let Some(a) = is_and_minus_one(cx, lhs) + { + self.build_sugg(cx, expr, a); + } else if is_integer_literal(lhs, 0) + && let Some(a) = is_and_minus_one(cx, rhs) { - build_sugg(cx, expr, right1, &mut applicability); + self.build_sugg(cx, expr, a); } } } } -fn build_sugg(cx: &LateContext<'_>, expr: &Expr<'_>, receiver: &Expr<'_>, applicability: &mut Applicability) { - let snippet = snippet_with_applicability(cx, receiver.span, "..", applicability); - - span_lint_and_sugg( - cx, - MANUAL_IS_POWER_OF_TWO, - expr.span, - "manually reimplementing `is_power_of_two`", - "consider using `.is_power_of_two()`", - format!("{snippet}.is_power_of_two()"), - *applicability, - ); +/// Return the unsigned integer receiver of `.count_ones()` or the argument of +/// `::count_ones(…)`. +fn count_ones_receiver<'tcx>(cx: &LateContext<'tcx>, expr: &Expr<'tcx>) -> Option<&'tcx Expr<'tcx>> { + let (method, ty, receiver) = if let ExprKind::MethodCall(method_name, receiver, [], _) = expr.kind { + (method_name, cx.typeck_results().expr_ty_adjusted(receiver), receiver) + } else if let ExprKind::Call(func, [arg]) = expr.kind + && let ExprKind::Path(QPath::TypeRelative(ty, func_name)) = func.kind + { + (func_name, ty_from_hir_ty(cx, ty), arg) + } else { + return None; + }; + (method.ident.as_str() == "count_ones" && matches!(ty.kind(), ty::Uint(_))).then_some(receiver) } -fn check_lit(expr: &Expr<'_>, expected_num: u128) -> bool { - if let ExprKind::Lit(lit) = expr.kind - && let LitKind::Int(Pu128(num), _) = lit.node - && num == expected_num +/// Return `greater` if `smaller == greater - 1` +fn is_one_less<'tcx>( + cx: &LateContext<'tcx>, + greater: &'tcx Expr<'tcx>, + smaller: &Expr<'tcx>, +) -> Option<&'tcx Expr<'tcx>> { + if let Some((lhs, rhs)) = unexpanded_binop_operands(smaller, BinOpKind::Sub) + && SpanlessEq::new(cx).eq_expr(greater, lhs) + && is_integer_literal(rhs, 1) + && matches!(cx.typeck_results().expr_ty_adjusted(greater).kind(), ty::Uint(_)) { - return true; + Some(greater) + } else { + None } - false } -fn check_eq_expr(cx: &LateContext<'_>, lhs: &Expr<'_>, rhs: &Expr<'_>) -> bool { - SpanlessEq::new(cx).eq_expr(lhs, rhs) +/// Return `v` if `expr` is `v & (v - 1)` or `(v - 1) & v` +fn is_and_minus_one<'tcx>(cx: &LateContext<'tcx>, expr: &Expr<'tcx>) -> Option<&'tcx Expr<'tcx>> { + let (lhs, rhs) = unexpanded_binop_operands(expr, BinOpKind::BitAnd)?; + is_one_less(cx, lhs, rhs).or_else(|| is_one_less(cx, rhs, lhs)) +} + +/// Return the operands of the `expr` binary operation if the operator is `op` and none of the +/// operands come from expansion. +fn unexpanded_binop_operands<'hir>(expr: &Expr<'hir>, op: BinOpKind) -> Option<(&'hir Expr<'hir>, &'hir Expr<'hir>)> { + if let ExprKind::Binary(binop, lhs, rhs) = expr.kind + && binop.node == op + && !lhs.span.from_expansion() + && !rhs.span.from_expansion() + { + Some((lhs, rhs)) + } else { + None + } } diff --git a/clippy_lints/src/manual_option_as_slice.rs b/clippy_lints/src/manual_option_as_slice.rs index 8dee29b2a0b5d..e4ad3953b671d 100644 --- a/clippy_lints/src/manual_option_as_slice.rs +++ b/clippy_lints/src/manual_option_as_slice.rs @@ -34,7 +34,7 @@ declare_clippy_lint! { /// _ = opt.as_slice(); /// _ = opt.as_slice(); /// ``` - #[clippy::version = "1.85.0"] + #[clippy::version = "1.86.0"] pub MANUAL_OPTION_AS_SLICE, complexity, "manual `Option::as_slice`" diff --git a/clippy_lints/src/manual_retain.rs b/clippy_lints/src/manual_retain.rs index 16dd1ad4e4784..98e8b1f5cf92c 100644 --- a/clippy_lints/src/manual_retain.rs +++ b/clippy_lints/src/manual_retain.rs @@ -92,10 +92,10 @@ fn check_into_iter( && let [filter_params] = filter_body.params { if match_map_type(cx, left_expr) { - if let hir::PatKind::Tuple([key_pat, value_pat], _) = filter_params.pat.kind { - if let Some(sugg) = make_sugg(cx, key_pat, value_pat, left_expr, filter_body) { - make_span_lint_and_sugg(cx, parent_expr_span, sugg); - } + if let hir::PatKind::Tuple([key_pat, value_pat], _) = filter_params.pat.kind + && let Some(sugg) = make_sugg(cx, key_pat, value_pat, left_expr, filter_body) + { + make_span_lint_and_sugg(cx, parent_expr_span, sugg); } // Cannot lint other cases because `retain` requires two parameters } else { @@ -196,22 +196,21 @@ fn check_to_owned( && let filter_body = cx.tcx.hir_body(closure.body) && let [filter_params] = filter_body.params && msrv.meets(cx, msrvs::STRING_RETAIN) + && let hir::PatKind::Ref(pat, _) = filter_params.pat.kind { - if let hir::PatKind::Ref(pat, _) = filter_params.pat.kind { - make_span_lint_and_sugg( - cx, - parent_expr_span, - format!( - "{}.retain(|{}| {})", - snippet(cx, left_expr.span, ".."), - snippet(cx, pat.span, ".."), - snippet(cx, filter_body.value.span, "..") - ), - ); - } - // Be conservative now. Do nothing for the `Binding` case. - // TODO: Ideally, we can rewrite the lambda by stripping one level of reference + make_span_lint_and_sugg( + cx, + parent_expr_span, + format!( + "{}.retain(|{}| {})", + snippet(cx, left_expr.span, ".."), + snippet(cx, pat.span, ".."), + snippet(cx, filter_body.value.span, "..") + ), + ); } + // Be conservative now. Do nothing for the `Binding` case. + // TODO: Ideally, we can rewrite the lambda by stripping one level of reference } fn make_sugg( diff --git a/clippy_lints/src/manual_rotate.rs b/clippy_lints/src/manual_rotate.rs index 07537fc65c08c..06ee00c2cef3c 100644 --- a/clippy_lints/src/manual_rotate.rs +++ b/clippy_lints/src/manual_rotate.rs @@ -101,7 +101,7 @@ impl LateLintPass<'_> for ManualRotate { (r_shift_dir, r_amount) }; let mut applicability = Applicability::MachineApplicable; - let expr_sugg = sugg::Sugg::hir_with_applicability(cx, l_expr, "_", &mut applicability).maybe_par(); + let expr_sugg = sugg::Sugg::hir_with_applicability(cx, l_expr, "_", &mut applicability).maybe_paren(); span_lint_and_sugg( cx, MANUAL_ROTATE, diff --git a/clippy_lints/src/manual_string_new.rs b/clippy_lints/src/manual_string_new.rs index 5c2a711b5cb23..7ca3b71206671 100644 --- a/clippy_lints/src/manual_string_new.rs +++ b/clippy_lints/src/manual_string_new.rs @@ -113,15 +113,14 @@ fn parse_call(cx: &LateContext<'_>, span: Span, func: &Expr<'_>, arg: &Expr<'_>) && is_expr_kind_empty_str(&arg.kind) { warn_then_suggest(cx, span); - } else if let QPath::Resolved(_, path) = qpath { + } else if let QPath::Resolved(_, path) = qpath // From::from(...) or TryFrom::try_from(...) - if let [path_seg1, path_seg2] = path.segments - && is_expr_kind_empty_str(&arg.kind) - && ((path_seg1.ident.name == sym::From && path_seg2.ident.name == sym::from) - || (path_seg1.ident.name == sym::TryFrom && path_seg2.ident.name == sym::try_from)) - { - warn_then_suggest(cx, span); - } + && let [path_seg1, path_seg2] = path.segments + && is_expr_kind_empty_str(&arg.kind) + && ((path_seg1.ident.name == sym::From && path_seg2.ident.name == sym::from) + || (path_seg1.ident.name == sym::TryFrom && path_seg2.ident.name == sym::try_from)) + { + warn_then_suggest(cx, span); } } } diff --git a/clippy_lints/src/manual_unwrap_or_default.rs b/clippy_lints/src/manual_unwrap_or_default.rs deleted file mode 100644 index 87d2faa225c52..0000000000000 --- a/clippy_lints/src/manual_unwrap_or_default.rs +++ /dev/null @@ -1,212 +0,0 @@ -use rustc_errors::Applicability; -use rustc_hir::def::Res; -use rustc_hir::{Arm, Expr, ExprKind, HirId, LangItem, MatchSource, Pat, PatExpr, PatExprKind, PatKind, QPath}; -use rustc_lint::{LateContext, LateLintPass, LintContext}; -use rustc_middle::ty::GenericArgKind; -use rustc_session::declare_lint_pass; -use rustc_span::sym; - -use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::higher::IfLetOrMatch; -use clippy_utils::sugg::Sugg; -use clippy_utils::ty::{expr_type_is_certain, implements_trait}; -use clippy_utils::{is_default_equivalent, is_in_const_context, path_res, peel_blocks, span_contains_comment}; - -declare_clippy_lint! { - /// ### What it does - /// Checks if a `match` or `if let` expression can be simplified using - /// `.unwrap_or_default()`. - /// - /// ### Why is this bad? - /// It can be done in one call with `.unwrap_or_default()`. - /// - /// ### Example - /// ```no_run - /// let x: Option = Some(String::new()); - /// let y: String = match x { - /// Some(v) => v, - /// None => String::new(), - /// }; - /// - /// let x: Option> = Some(Vec::new()); - /// let y: Vec = if let Some(v) = x { - /// v - /// } else { - /// Vec::new() - /// }; - /// ``` - /// Use instead: - /// ```no_run - /// let x: Option = Some(String::new()); - /// let y: String = x.unwrap_or_default(); - /// - /// let x: Option> = Some(Vec::new()); - /// let y: Vec = x.unwrap_or_default(); - /// ``` - #[clippy::version = "1.79.0"] - pub MANUAL_UNWRAP_OR_DEFAULT, - suspicious, - "check if a `match` or `if let` can be simplified with `unwrap_or_default`" -} - -declare_lint_pass!(ManualUnwrapOrDefault => [MANUAL_UNWRAP_OR_DEFAULT]); - -fn get_some<'tcx>(cx: &LateContext<'tcx>, pat: &Pat<'tcx>) -> Option { - if let PatKind::TupleStruct(QPath::Resolved(_, path), &[pat], _) = pat.kind - && let PatKind::Binding(_, pat_id, _, _) = pat.kind - && let Some(def_id) = path.res.opt_def_id() - // Since it comes from a pattern binding, we need to get the parent to actually match - // against it. - && let Some(def_id) = cx.tcx.opt_parent(def_id) - && (cx.tcx.lang_items().get(LangItem::OptionSome) == Some(def_id) - || cx.tcx.lang_items().get(LangItem::ResultOk) == Some(def_id)) - { - Some(pat_id) - } else { - None - } -} - -fn get_none<'tcx>(cx: &LateContext<'tcx>, arm: &Arm<'tcx>) -> Option<&'tcx Expr<'tcx>> { - if let PatKind::Expr(PatExpr { kind: PatExprKind::Path(QPath::Resolved(_, path)), .. }) = arm.pat.kind - && let Some(def_id) = path.res.opt_def_id() - // Since it comes from a pattern binding, we need to get the parent to actually match - // against it. - && let Some(def_id) = cx.tcx.opt_parent(def_id) - && cx.tcx.lang_items().get(LangItem::OptionNone) == Some(def_id) - { - Some(arm.body) - } else if let PatKind::TupleStruct(QPath::Resolved(_, path), _, _)= arm.pat.kind - && let Some(def_id) = path.res.opt_def_id() - // Since it comes from a pattern binding, we need to get the parent to actually match - // against it. - && let Some(def_id) = cx.tcx.opt_parent(def_id) - && cx.tcx.lang_items().get(LangItem::ResultErr) == Some(def_id) - { - Some(arm.body) - } else if let PatKind::Wild = arm.pat.kind { - // We consider that the `Some` check will filter it out if it's not right. - Some(arm.body) - } else { - None - } -} - -fn get_some_and_none_bodies<'tcx>( - cx: &LateContext<'tcx>, - arm1: &'tcx Arm<'tcx>, - arm2: &'tcx Arm<'tcx>, -) -> Option<((&'tcx Expr<'tcx>, HirId), &'tcx Expr<'tcx>)> { - if let Some(binding_id) = get_some(cx, arm1.pat) - && let Some(body_none) = get_none(cx, arm2) - { - Some(((arm1.body, binding_id), body_none)) - } else if let Some(binding_id) = get_some(cx, arm2.pat) - && let Some(body_none) = get_none(cx, arm1) - { - Some(((arm2.body, binding_id), body_none)) - } else { - None - } -} - -#[allow(clippy::needless_pass_by_value)] -fn handle<'tcx>(cx: &LateContext<'tcx>, if_let_or_match: IfLetOrMatch<'tcx>, expr: &'tcx Expr<'tcx>) { - // Get expr_name ("if let" or "match" depending on kind of expression), the condition, the body for - // the some arm, the body for the none arm and the binding id of the some arm - let (expr_name, condition, body_some, body_none, binding_id) = match if_let_or_match { - IfLetOrMatch::Match(condition, [arm1, arm2], MatchSource::Normal | MatchSource::ForLoopDesugar) - // Make sure there are no guards to keep things simple - if arm1.guard.is_none() - && arm2.guard.is_none() - // Get the some and none bodies and the binding id of the some arm - && let Some(((body_some, binding_id), body_none)) = get_some_and_none_bodies(cx, arm1, arm2) => - { - ("match", condition, body_some, body_none, binding_id) - }, - IfLetOrMatch::IfLet(condition, pat, if_expr, Some(else_expr), _) - if let Some(binding_id) = get_some(cx, pat) => - { - ("if let", condition, if_expr, else_expr, binding_id) - }, - _ => { - // All other cases (match with number of arms != 2, if let without else, etc.) - return; - }, - }; - - // We check if the return type of the expression implements Default. - let expr_type = cx.typeck_results().expr_ty(expr); - if let Some(default_trait_id) = cx.tcx.get_diagnostic_item(sym::Default) - && implements_trait(cx, expr_type, default_trait_id, &[]) - // We check if the initial condition implements Default. - && let Some(condition_ty) = cx.typeck_results().expr_ty(condition).walk().nth(1) - && let GenericArgKind::Type(condition_ty) = condition_ty.unpack() - && implements_trait(cx, condition_ty, default_trait_id, &[]) - // We check that the `Some(x) => x` doesn't do anything apart "returning" the value in `Some`. - && let ExprKind::Path(QPath::Resolved(_, path)) = peel_blocks(body_some).kind - && let Res::Local(local_id) = path.res - && local_id == binding_id - // We now check the `None` arm is calling a method equivalent to `Default::default`. - && let body_none = peel_blocks(body_none) - && is_default_equivalent(cx, body_none) - && let Some(receiver) = Sugg::hir_opt(cx, condition).map(Sugg::maybe_par) - { - // Machine applicable only if there are no comments present - let applicability = if span_contains_comment(cx.sess().source_map(), expr.span) { - Applicability::MaybeIncorrect - } else { - Applicability::MachineApplicable - }; - - // We now check if the condition is a None variant, in which case we need to specify the type - if path_res(cx, condition) - .opt_def_id() - .is_some_and(|id| Some(cx.tcx.parent(id)) == cx.tcx.lang_items().option_none_variant()) - { - return span_lint_and_sugg( - cx, - MANUAL_UNWRAP_OR_DEFAULT, - expr.span, - format!("{expr_name} can be simplified with `.unwrap_or_default()`"), - "replace it with", - format!("{receiver}::<{expr_type}>.unwrap_or_default()"), - applicability, - ); - } - - // We check if the expression type is still uncertain, in which case we ask the user to specify it - if !expr_type_is_certain(cx, condition) { - return span_lint_and_sugg( - cx, - MANUAL_UNWRAP_OR_DEFAULT, - expr.span, - format!("{expr_name} can be simplified with `.unwrap_or_default()`"), - format!("ascribe the type {expr_type} and replace your expression with"), - format!("{receiver}.unwrap_or_default()"), - Applicability::Unspecified, - ); - } - - span_lint_and_sugg( - cx, - MANUAL_UNWRAP_OR_DEFAULT, - expr.span, - format!("{expr_name} can be simplified with `.unwrap_or_default()`"), - "replace it with", - format!("{receiver}.unwrap_or_default()"), - applicability, - ); - } -} - -impl<'tcx> LateLintPass<'tcx> for ManualUnwrapOrDefault { - fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) { - if let Some(if_let_or_match) = IfLetOrMatch::parse(cx, expr) - && !expr.span.from_expansion() - && !is_in_const_context(cx) - { - handle(cx, if_let_or_match, expr); - } - } -} diff --git a/clippy_lints/src/map_unit_fn.rs b/clippy_lints/src/map_unit_fn.rs index 56aead85e7c41..b607f8117eb89 100644 --- a/clippy_lints/src/map_unit_fn.rs +++ b/clippy_lints/src/map_unit_fn.rs @@ -101,10 +101,10 @@ fn is_unit_type(ty: Ty<'_>) -> bool { fn is_unit_function(cx: &LateContext<'_>, expr: &hir::Expr<'_>) -> bool { let ty = cx.typeck_results().expr_ty(expr); - if let ty::FnDef(id, _) = *ty.kind() { - if let Some(fn_type) = cx.tcx.fn_sig(id).instantiate_identity().no_bound_vars() { - return is_unit_type(fn_type.output()); - } + if let ty::FnDef(id, _) = *ty.kind() + && let Some(fn_type) = cx.tcx.fn_sig(id).instantiate_identity().no_bound_vars() + { + return is_unit_type(fn_type.output()); } false } diff --git a/clippy_lints/src/matches/collapsible_match.rs b/clippy_lints/src/matches/collapsible_match.rs index 6f446bf956587..5b50efad3e44e 100644 --- a/clippy_lints/src/matches/collapsible_match.rs +++ b/clippy_lints/src/matches/collapsible_match.rs @@ -1,4 +1,4 @@ -use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::diagnostics::span_lint_hir_and_then; use clippy_utils::higher::IfLetOrMatch; use clippy_utils::msrvs::Msrv; use clippy_utils::source::snippet; @@ -99,7 +99,7 @@ fn check_arm<'tcx>( } else { String::new() }; - span_lint_and_then(cx, COLLAPSIBLE_MATCH, inner_expr.span, msg, |diag| { + span_lint_hir_and_then(cx, COLLAPSIBLE_MATCH, inner_expr.hir_id, inner_expr.span, msg, |diag| { let mut help_span = MultiSpan::from_spans(vec![binding_span, inner_then_pat.span]); help_span.push_span_label(binding_span, "replace this binding"); help_span.push_span_label(inner_then_pat.span, format!("with this pattern{replace_msg}")); diff --git a/clippy_lints/src/matches/manual_filter.rs b/clippy_lints/src/matches/manual_filter.rs index 4cc43e427ec61..abf723fa6f4ca 100644 --- a/clippy_lints/src/matches/manual_filter.rs +++ b/clippy_lints/src/matches/manual_filter.rs @@ -41,10 +41,10 @@ fn get_cond_expr<'tcx>( fn peels_blocks_incl_unsafe_opt<'a>(expr: &'a Expr<'a>) -> Option<&'a Expr<'a>> { // we don't want to use `peel_blocks` here because we don't care if the block is unsafe, it's // checked by `contains_unsafe_block` - if let ExprKind::Block(block, None) = expr.kind { - if block.stmts.is_empty() { - return block.expr; - } + if let ExprKind::Block(block, None) = expr.kind + && block.stmts.is_empty() + { + return block.expr; } None } @@ -61,13 +61,13 @@ fn peels_blocks_incl_unsafe<'a>(expr: &'a Expr<'a>) -> &'a Expr<'a> { // } // Returns true if resolves to `Some(x)`, `false` otherwise fn is_some_expr(cx: &LateContext<'_>, target: HirId, ctxt: SyntaxContext, expr: &Expr<'_>) -> bool { - if let Some(inner_expr) = peels_blocks_incl_unsafe_opt(expr) { + if let Some(inner_expr) = peels_blocks_incl_unsafe_opt(expr) // there can be not statements in the block as they would be removed when switching to `.filter` - if let ExprKind::Call(callee, [arg]) = inner_expr.kind { - return ctxt == expr.span.ctxt() - && is_res_lang_ctor(cx, path_res(cx, callee), OptionSome) - && path_to_local_id(arg, target); - } + && let ExprKind::Call(callee, [arg]) = inner_expr.kind + { + return ctxt == expr.span.ctxt() + && is_res_lang_ctor(cx, path_res(cx, callee), OptionSome) + && path_to_local_id(arg, target); } false } diff --git a/clippy_lints/src/matches/manual_ok_err.rs b/clippy_lints/src/matches/manual_ok_err.rs index 576e42a564c2b..4959908dad635 100644 --- a/clippy_lints/src/matches/manual_ok_err.rs +++ b/clippy_lints/src/matches/manual_ok_err.rs @@ -85,7 +85,7 @@ fn is_variant_or_wildcard(cx: &LateContext<'_>, pat: &Pat<'_>, can_be_wild: bool /// contains `Err(IDENT)`, `None` otherwise. fn is_ok_or_err<'hir>(cx: &LateContext<'_>, pat: &Pat<'hir>) -> Option<(bool, &'hir Ident)> { if let PatKind::TupleStruct(qpath, [arg], _) = &pat.kind - && let PatKind::Binding(BindingMode::NONE, _, ident, _) = &arg.kind + && let PatKind::Binding(BindingMode::NONE, _, ident, None) = &arg.kind && let res = cx.qpath_res(qpath, pat.hir_id) && let Res::Def(DefKind::Ctor(..), id) = res && let id @ Some(_) = cx.tcx.opt_parent(id) @@ -132,7 +132,7 @@ fn apply_lint(cx: &LateContext<'_>, expr: &Expr<'_>, scrutinee: &Expr<'_>, is_ok } else { Applicability::MachineApplicable }; - let scrut = Sugg::hir_with_applicability(cx, scrutinee, "..", &mut app).maybe_par(); + let scrut = Sugg::hir_with_applicability(cx, scrutinee, "..", &mut app).maybe_paren(); let sugg = format!("{scrut}.{method}()"); // If the expression being expanded is the `if …` part of an `else if …`, it must be blockified. let sugg = if let Some(parent_expr) = get_parent_expr(cx, expr) diff --git a/clippy_lints/src/matches/manual_unwrap_or.rs b/clippy_lints/src/matches/manual_unwrap_or.rs index 2bf7ec8ab7dde..b64ae0b24d818 100644 --- a/clippy_lints/src/matches/manual_unwrap_or.rs +++ b/clippy_lints/src/matches/manual_unwrap_or.rs @@ -1,133 +1,219 @@ use clippy_utils::consts::ConstEvalCtxt; -use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::source::{SpanRangeExt, indent_of, reindent_multiline}; -use clippy_utils::ty::is_type_diagnostic_item; -use clippy_utils::usage::contains_return_break_continue_macro; -use clippy_utils::{is_res_lang_ctor, path_to_local_id, peel_blocks, sugg}; +use clippy_utils::source::{SpanRangeExt as _, indent_of, reindent_multiline}; use rustc_errors::Applicability; -use rustc_hir::LangItem::{OptionNone, ResultErr}; -use rustc_hir::def::{DefKind, Res}; -use rustc_hir::{Arm, Expr, Pat, PatExpr, PatExprKind, PatKind}; -use rustc_lint::LateContext; -use rustc_middle::ty::Ty; +use rustc_hir::def::Res; +use rustc_hir::{Arm, Expr, ExprKind, HirId, LangItem, Pat, PatExpr, PatExprKind, PatKind, QPath}; +use rustc_lint::{LateContext, LintContext}; +use rustc_middle::ty::{GenericArgKind, Ty}; use rustc_span::sym; -use super::MANUAL_UNWRAP_OR; +use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::sugg::Sugg; +use clippy_utils::ty::{expr_type_is_certain, get_type_diagnostic_name, implements_trait}; +use clippy_utils::{is_default_equivalent, is_lint_allowed, path_res, peel_blocks, span_contains_comment}; -pub(super) fn check_match<'tcx>( - cx: &LateContext<'tcx>, - expr: &'tcx Expr<'tcx>, - scrutinee: &'tcx Expr<'_>, - arms: &'tcx [Arm<'_>], -) { - let ty = cx.typeck_results().expr_ty(scrutinee); - if let Some((or_arm, unwrap_arm)) = applicable_or_arm(cx, arms) { - check_and_lint(cx, expr, unwrap_arm.pat, scrutinee, unwrap_arm.body, or_arm.body, ty); +use super::{MANUAL_UNWRAP_OR, MANUAL_UNWRAP_OR_DEFAULT}; + +fn get_some(cx: &LateContext<'_>, pat: &Pat<'_>) -> Option { + if let PatKind::TupleStruct(QPath::Resolved(_, path), &[pat], _) = pat.kind + && let PatKind::Binding(_, pat_id, _, _) = pat.kind + && let Some(def_id) = path.res.opt_def_id() + // Since it comes from a pattern binding, we need to get the parent to actually match + // against it. + && let Some(def_id) = cx.tcx.opt_parent(def_id) + && let Some(lang_item) = cx.tcx.lang_items().from_def_id(def_id) + && matches!(lang_item, LangItem::OptionSome | LangItem::ResultOk) + { + Some(pat_id) + } else { + None } } -pub(super) fn check_if_let<'tcx>( - cx: &LateContext<'tcx>, - expr: &'tcx Expr<'_>, - let_pat: &'tcx Pat<'_>, - let_expr: &'tcx Expr<'_>, - then_expr: &'tcx Expr<'_>, - else_expr: &'tcx Expr<'_>, -) { - let ty = cx.typeck_results().expr_ty(let_expr); - let then_ty = cx.typeck_results().expr_ty(then_expr); - // The signature is `fn unwrap_or(self: Option, default: T) -> T`. - // When `expr_adjustments(then_expr).is_empty()`, `T` should equate to `default`'s type. - // Otherwise, type error will occur. - if cx.typeck_results().expr_adjustments(then_expr).is_empty() - && let rustc_middle::ty::Adt(_did, args) = ty.kind() - && let Some(some_ty) = args.first().and_then(|arg| arg.as_type()) - && some_ty != then_ty +fn get_none<'tcx>(cx: &LateContext<'_>, arm: &Arm<'tcx>) -> Option<&'tcx Expr<'tcx>> { + if let PatKind::Expr(PatExpr { kind: PatExprKind::Path(QPath::Resolved(_, path)), .. }) = arm.pat.kind + && let Some(def_id) = path.res.opt_def_id() + // Since it comes from a pattern binding, we need to get the parent to actually match + // against it. + && let Some(def_id) = cx.tcx.opt_parent(def_id) + && cx.tcx.lang_items().get(LangItem::OptionNone) == Some(def_id) { - return; + Some(arm.body) + } else if let PatKind::TupleStruct(QPath::Resolved(_, path), _, _)= arm.pat.kind + && let Some(def_id) = path.res.opt_def_id() + // Since it comes from a pattern binding, we need to get the parent to actually match + // against it. + && let Some(def_id) = cx.tcx.opt_parent(def_id) + && cx.tcx.lang_items().get(LangItem::ResultErr) == Some(def_id) + { + Some(arm.body) + } else if let PatKind::Wild = arm.pat.kind { + // We consider that the `Some` check will filter it out if it's not right. + Some(arm.body) + } else { + None } - check_and_lint(cx, expr, let_pat, let_expr, then_expr, peel_blocks(else_expr), ty); } -fn check_and_lint<'tcx>( +fn get_some_and_none_bodies<'tcx>( cx: &LateContext<'tcx>, - expr: &'tcx Expr<'_>, - let_pat: &'tcx Pat<'_>, - let_expr: &'tcx Expr<'_>, - then_expr: &'tcx Expr<'_>, - else_expr: &'tcx Expr<'_>, - ty: Ty<'tcx>, + arm1: &'tcx Arm<'tcx>, + arm2: &'tcx Arm<'tcx>, +) -> Option<((&'tcx Expr<'tcx>, HirId), &'tcx Expr<'tcx>)> { + if let Some(binding_id) = get_some(cx, arm1.pat) + && let Some(body_none) = get_none(cx, arm2) + { + Some(((arm1.body, binding_id), body_none)) + } else if let Some(binding_id) = get_some(cx, arm2.pat) + && let Some(body_none) = get_none(cx, arm1) + { + Some(((arm2.body, binding_id), body_none)) + } else { + None + } +} + +fn handle( + cx: &LateContext<'_>, + expr: &Expr<'_>, + expr_name: &'static str, + condition: &Expr<'_>, + body_some: &Expr<'_>, + body_none: &Expr<'_>, + binding_id: HirId, ) { - if let PatKind::TupleStruct(ref qpath, [unwrap_pat], _) = let_pat.kind - && let Res::Def(DefKind::Ctor(..), ctor_id) = cx.qpath_res(qpath, let_pat.hir_id) - && let Some(variant_id) = cx.tcx.opt_parent(ctor_id) - && (cx.tcx.lang_items().option_some_variant() == Some(variant_id) - || cx.tcx.lang_items().result_ok_variant() == Some(variant_id)) - && let PatKind::Binding(_, binding_hir_id, ..) = unwrap_pat.kind - && path_to_local_id(peel_blocks(then_expr), binding_hir_id) - && cx.typeck_results().expr_adjustments(then_expr).is_empty() - && let Some(ty_name) = find_type_name(cx, ty) - && let Some(or_body_snippet) = else_expr.span.get_source_text(cx) - && let Some(indent) = indent_of(cx, expr.span) - && ConstEvalCtxt::new(cx).eval_simple(else_expr).is_some() + // Only deal with situations where both alternatives return the same non-adjusted type. + if cx.typeck_results().expr_ty(body_some) != cx.typeck_results().expr_ty(body_none) { + return; + } + + let expr_type = cx.typeck_results().expr_ty(expr); + // We check that the `Some(x) => x` doesn't do anything apart "returning" the value in `Some`. + if let ExprKind::Path(QPath::Resolved(_, path)) = peel_blocks(body_some).kind + && let Res::Local(local_id) = path.res + && local_id == binding_id { - lint(cx, expr, let_expr, ty_name, &or_body_snippet, indent); + // Machine applicable only if there are no comments present + let mut applicability = if span_contains_comment(cx.sess().source_map(), expr.span) { + Applicability::MaybeIncorrect + } else { + Applicability::MachineApplicable + }; + let receiver = Sugg::hir_with_applicability(cx, condition, "_", &mut applicability).maybe_paren(); + + // We now check the `None` arm is calling a method equivalent to `Default::default`. + if !is_lint_allowed(cx, MANUAL_UNWRAP_OR_DEFAULT, expr.hir_id) + // We check if the return type of the expression implements Default. + && let Some(default_trait_id) = cx.tcx.get_diagnostic_item(sym::Default) + && implements_trait(cx, expr_type, default_trait_id, &[]) + // We check if the initial condition implements Default. + && let Some(condition_ty) = cx.typeck_results().expr_ty(condition).walk().nth(1) + && let GenericArgKind::Type(condition_ty) = condition_ty.unpack() + && implements_trait(cx, condition_ty, default_trait_id, &[]) + && is_default_equivalent(cx, peel_blocks(body_none)) + { + // We now check if the condition is a None variant, in which case we need to specify the type + if path_res(cx, condition) + .opt_def_id() + .is_some_and(|id| Some(cx.tcx.parent(id)) == cx.tcx.lang_items().option_none_variant()) + { + return span_lint_and_sugg( + cx, + MANUAL_UNWRAP_OR_DEFAULT, + expr.span, + format!("{expr_name} can be simplified with `.unwrap_or_default()`"), + "replace it with", + format!("{receiver}::<{expr_type}>.unwrap_or_default()"), + applicability, + ); + } + + // We check if the expression type is still uncertain, in which case we ask the user to specify it + if !expr_type_is_certain(cx, condition) { + return span_lint_and_sugg( + cx, + MANUAL_UNWRAP_OR_DEFAULT, + expr.span, + format!("{expr_name} can be simplified with `.unwrap_or_default()`"), + format!("ascribe the type {expr_type} and replace your expression with"), + format!("{receiver}.unwrap_or_default()"), + Applicability::Unspecified, + ); + } + + span_lint_and_sugg( + cx, + MANUAL_UNWRAP_OR_DEFAULT, + expr.span, + format!("{expr_name} can be simplified with `.unwrap_or_default()`"), + "replace it with", + format!("{receiver}.unwrap_or_default()"), + applicability, + ); + } else if let Some(ty_name) = find_type_name(cx, cx.typeck_results().expr_ty(condition)) + && cx.typeck_results().expr_adjustments(body_some).is_empty() + && let Some(or_body_snippet) = peel_blocks(body_none).span.get_source_text(cx) + && let Some(indent) = indent_of(cx, expr.span) + && ConstEvalCtxt::new(cx).eval_simple(body_none).is_some() + { + let reindented_or_body = reindent_multiline(&or_body_snippet, true, Some(indent)); + let mut app = Applicability::MachineApplicable; + let suggestion = Sugg::hir_with_context(cx, condition, expr.span.ctxt(), "..", &mut app).maybe_paren(); + span_lint_and_sugg( + cx, + MANUAL_UNWRAP_OR, + expr.span, + format!("this pattern reimplements `{ty_name}::unwrap_or`"), + "replace with", + format!("{suggestion}.unwrap_or({reindented_or_body})",), + app, + ); + } } } fn find_type_name<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Option<&'static str> { - if is_type_diagnostic_item(cx, ty, sym::Option) { - Some("Option") - } else if is_type_diagnostic_item(cx, ty, sym::Result) { - Some("Result") - } else { - None + match get_type_diagnostic_name(cx, ty)? { + sym::Option => Some("Option"), + sym::Result => Some("Result"), + _ => None, } } -fn applicable_or_arm<'a>(cx: &LateContext<'_>, arms: &'a [Arm<'a>]) -> Option<(&'a Arm<'a>, &'a Arm<'a>)> { - if arms.len() == 2 - && arms.iter().all(|arm| arm.guard.is_none()) - && let Some((idx, or_arm)) = arms.iter().enumerate().find(|(_, arm)| match arm.pat.kind { - PatKind::Expr(PatExpr { - hir_id, - kind: PatExprKind::Path(qpath), - .. - }) => is_res_lang_ctor(cx, cx.qpath_res(qpath, *hir_id), OptionNone), - PatKind::TupleStruct(ref qpath, [pat], _) => { - matches!(pat.kind, PatKind::Wild) - && is_res_lang_ctor(cx, cx.qpath_res(qpath, arm.pat.hir_id), ResultErr) - }, - _ => false, - }) - && let unwrap_arm = &arms[1 - idx] - && !contains_return_break_continue_macro(or_arm.body) +pub fn check_match<'tcx>( + cx: &LateContext<'tcx>, + expr: &'tcx Expr<'tcx>, + scrutinee: &'tcx Expr<'tcx>, + arms: &'tcx [Arm<'tcx>], +) { + if let [arm1, arm2] = arms + // Make sure there are no guards to keep things simple + && arm1.guard.is_none() + && arm2.guard.is_none() + // Get the some and none bodies and the binding id of the some arm + && let Some(((body_some, binding_id), body_none)) = get_some_and_none_bodies(cx, arm1, arm2) { - Some((or_arm, unwrap_arm)) - } else { - None + handle(cx, expr, "match", scrutinee, body_some, body_none, binding_id); } } -fn lint<'tcx>( +pub fn check_if_let<'tcx>( cx: &LateContext<'tcx>, - expr: &Expr<'tcx>, - scrutinee: &'tcx Expr<'_>, - ty_name: &str, - or_body_snippet: &str, - indent: usize, + expr: &'tcx Expr<'tcx>, + pat: &'tcx Pat<'tcx>, + scrutinee: &'tcx Expr<'tcx>, + then_expr: &'tcx Expr<'tcx>, + else_expr: &'tcx Expr<'tcx>, ) { - let reindented_or_body = reindent_multiline(or_body_snippet, true, Some(indent)); - - let mut app = Applicability::MachineApplicable; - let suggestion = sugg::Sugg::hir_with_context(cx, scrutinee, expr.span.ctxt(), "..", &mut app).maybe_par(); - span_lint_and_sugg( - cx, - MANUAL_UNWRAP_OR, - expr.span, - format!("this pattern reimplements `{ty_name}::unwrap_or`"), - "replace with", - format!("{suggestion}.unwrap_or({reindented_or_body})",), - app, - ); + if let Some(binding_id) = get_some(cx, pat) { + handle( + cx, + expr, + "if let", + scrutinee, + peel_blocks(then_expr), + peel_blocks(else_expr), + binding_id, + ); + } } diff --git a/clippy_lints/src/matches/match_like_matches.rs b/clippy_lints/src/matches/match_like_matches.rs index d29d1ea3e96d9..f14b69d91ce4b 100644 --- a/clippy_lints/src/matches/match_like_matches.rs +++ b/clippy_lints/src/matches/match_like_matches.rs @@ -76,17 +76,18 @@ where && first_attrs.is_empty() && iter.all(|arm| find_bool_lit(&arm.2.kind).is_some_and(|b| b == b0) && arm.3.is_none() && arm.0.is_empty()) { - if let Some(last_pat) = last_pat_opt { - if !is_wild(last_pat) { - return false; - } + if let Some(last_pat) = last_pat_opt + && !is_wild(last_pat) + { + return false; } for arm in iter_without_last.clone() { - if let Some(pat) = arm.1 { - if !is_lint_allowed(cx, REDUNDANT_PATTERN_MATCHING, pat.hir_id) && is_some(pat.kind) { - return false; - } + if let Some(pat) = arm.1 + && !is_lint_allowed(cx, REDUNDANT_PATTERN_MATCHING, pat.hir_id) + && is_some(pat.kind) + { + return false; } } @@ -113,10 +114,10 @@ where // strip potential borrows (#6503), but only if the type is a reference let mut ex_new = ex; - if let ExprKind::AddrOf(BorrowKind::Ref, .., ex_inner) = ex.kind { - if let ty::Ref(..) = cx.typeck_results().expr_ty(ex_inner).kind() { - ex_new = ex_inner; - } + if let ExprKind::AddrOf(BorrowKind::Ref, .., ex_inner) = ex.kind + && let ty::Ref(..) = cx.typeck_results().expr_ty(ex_inner).kind() + { + ex_new = ex_inner; } span_lint_and_sugg( cx, diff --git a/clippy_lints/src/matches/match_on_vec_items.rs b/clippy_lints/src/matches/match_on_vec_items.rs deleted file mode 100644 index dd71560e169ea..0000000000000 --- a/clippy_lints/src/matches/match_on_vec_items.rs +++ /dev/null @@ -1,50 +0,0 @@ -use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::source::snippet; -use clippy_utils::ty::{is_type_diagnostic_item, is_type_lang_item}; -use rustc_errors::Applicability; -use rustc_hir::{Expr, ExprKind, LangItem}; -use rustc_lint::LateContext; -use rustc_span::sym; - -use super::MATCH_ON_VEC_ITEMS; - -pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, scrutinee: &'tcx Expr<'_>) { - if let Some(idx_expr) = is_vec_indexing(cx, scrutinee) - && let ExprKind::Index(vec, idx, _) = idx_expr.kind - { - // FIXME: could be improved to suggest surrounding every pattern with Some(_), - // but only when `or_patterns` are stabilized. - span_lint_and_sugg( - cx, - MATCH_ON_VEC_ITEMS, - scrutinee.span, - "indexing into a vector may panic", - "try", - format!("{}.get({})", snippet(cx, vec.span, ".."), snippet(cx, idx.span, "..")), - Applicability::MaybeIncorrect, - ); - } -} - -fn is_vec_indexing<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) -> Option<&'tcx Expr<'tcx>> { - if let ExprKind::Index(array, index, _) = expr.kind - && is_vector(cx, array) - && !is_full_range(cx, index) - { - return Some(expr); - } - - None -} - -fn is_vector(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { - let ty = cx.typeck_results().expr_ty(expr); - let ty = ty.peel_refs(); - is_type_diagnostic_item(cx, ty, sym::Vec) -} - -fn is_full_range(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { - let ty = cx.typeck_results().expr_ty(expr); - let ty = ty.peel_refs(); - is_type_lang_item(cx, ty, LangItem::RangeFull) -} diff --git a/clippy_lints/src/matches/match_single_binding.rs b/clippy_lints/src/matches/match_single_binding.rs index 864923b27739d..adda35869900d 100644 --- a/clippy_lints/src/matches/match_single_binding.rs +++ b/clippy_lints/src/matches/match_single_binding.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::macros::HirNode; -use clippy_utils::source::{indent_of, snippet, snippet_block_with_context, snippet_with_applicability}; +use clippy_utils::source::{indent_of, snippet, snippet_block_with_context, snippet_with_context}; use clippy_utils::{get_parent_expr, is_refutable, peel_blocks}; use rustc_errors::Applicability; use rustc_hir::{Arm, Expr, ExprKind, Node, PatKind, StmtKind}; @@ -24,16 +24,10 @@ pub(crate) fn check<'a>(cx: &LateContext<'a>, ex: &Expr<'a>, arms: &[Arm<'_>], e let bind_names = arms[0].pat.span; let match_body = peel_blocks(arms[0].body); let mut app = Applicability::MaybeIncorrect; - let mut snippet_body = snippet_block_with_context( - cx, - match_body.span, - arms[0].span.ctxt(), - "..", - Some(expr.span), - &mut app, - ) - .0 - .to_string(); + let ctxt = expr.span.ctxt(); + let mut snippet_body = snippet_block_with_context(cx, match_body.span, ctxt, "..", Some(expr.span), &mut app) + .0 + .to_string(); // Do we need to add ';' to suggestion ? if let Node::Stmt(stmt) = cx.tcx.parent_hir_node(expr.hir_id) @@ -77,10 +71,10 @@ pub(crate) fn check<'a>(cx: &LateContext<'a>, ex: &Expr<'a>, arms: &[Arm<'_>], e span, format!( "let {} = {};\n{}let {} = {snippet_body};", - snippet_with_applicability(cx, bind_names, "..", &mut app), - snippet_with_applicability(cx, matched_vars, "..", &mut app), + snippet_with_context(cx, bind_names, ctxt, "..", &mut app).0, + snippet_with_context(cx, matched_vars, ctxt, "..", &mut app).0, " ".repeat(indent_of(cx, expr.span).unwrap_or(0)), - snippet_with_applicability(cx, pat_span, "..", &mut app) + snippet_with_context(cx, pat_span, ctxt, "..", &mut app).0 ), ), None => { @@ -178,24 +172,24 @@ fn sugg_with_curlies<'a>( let mut indent = " ".repeat(indent_of(cx, ex.span).unwrap_or(0)); let (mut cbrace_start, mut cbrace_end) = (String::new(), String::new()); - if let Some(parent_expr) = get_parent_expr(cx, match_expr) { - if let ExprKind::Closure { .. } = parent_expr.kind { - cbrace_end = format!("\n{indent}}}"); - // Fix body indent due to the closure - indent = " ".repeat(indent_of(cx, bind_names).unwrap_or(0)); - cbrace_start = format!("{{\n{indent}"); - } + if let Some(parent_expr) = get_parent_expr(cx, match_expr) + && let ExprKind::Closure { .. } = parent_expr.kind + { + cbrace_end = format!("\n{indent}}}"); + // Fix body indent due to the closure + indent = " ".repeat(indent_of(cx, bind_names).unwrap_or(0)); + cbrace_start = format!("{{\n{indent}"); } // If the parent is already an arm, and the body is another match statement, // we need curly braces around suggestion - if let Node::Arm(arm) = &cx.tcx.parent_hir_node(match_expr.hir_id) { - if let ExprKind::Match(..) = arm.body.kind { - cbrace_end = format!("\n{indent}}}"); - // Fix body indent due to the match - indent = " ".repeat(indent_of(cx, bind_names).unwrap_or(0)); - cbrace_start = format!("{{\n{indent}"); - } + if let Node::Arm(arm) = &cx.tcx.parent_hir_node(match_expr.hir_id) + && let ExprKind::Match(..) = arm.body.kind + { + cbrace_end = format!("\n{indent}}}"); + // Fix body indent due to the match + indent = " ".repeat(indent_of(cx, bind_names).unwrap_or(0)); + cbrace_start = format!("{{\n{indent}"); } let assignment_str = assignment.map_or_else(String::new, |span| { @@ -204,14 +198,17 @@ fn sugg_with_curlies<'a>( s }); + let ctxt = match_expr.span.ctxt(); let scrutinee = if needs_var_binding { format!( "let {} = {}", - snippet_with_applicability(cx, bind_names, "..", applicability), - snippet_with_applicability(cx, matched_vars, "..", applicability) + snippet_with_context(cx, bind_names, ctxt, "..", applicability).0, + snippet_with_context(cx, matched_vars, ctxt, "..", applicability).0 ) } else { - snippet_with_applicability(cx, matched_vars, "..", applicability).to_string() + snippet_with_context(cx, matched_vars, ctxt, "..", applicability) + .0 + .to_string() }; format!("{cbrace_start}{scrutinee};\n{indent}{assignment_str}{snippet_body}{cbrace_end}") diff --git a/clippy_lints/src/matches/match_str_case_mismatch.rs b/clippy_lints/src/matches/match_str_case_mismatch.rs index df1b83cbb516a..65b93a095b926 100644 --- a/clippy_lints/src/matches/match_str_case_mismatch.rs +++ b/clippy_lints/src/matches/match_str_case_mismatch.rs @@ -26,10 +26,10 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, scrutinee: &'tcx Expr<'_>, arm && let ty::Str = ty.kind() { let mut visitor = MatchExprVisitor { cx }; - if let ControlFlow::Break(case_method) = visitor.visit_expr(scrutinee) { - if let Some((bad_case_span, bad_case_sym)) = verify_case(&case_method, arms) { - lint(cx, &case_method, bad_case_span, bad_case_sym.as_str()); - } + if let ControlFlow::Break(case_method) = visitor.visit_expr(scrutinee) + && let Some((bad_case_span, bad_case_sym)) = verify_case(&case_method, arms) + { + lint(cx, &case_method, bad_case_span, bad_case_sym.as_str()); } } } diff --git a/clippy_lints/src/matches/match_wild_enum.rs b/clippy_lints/src/matches/match_wild_enum.rs index 11b588b33554d..24b4a6758004f 100644 --- a/clippy_lints/src/matches/match_wild_enum.rs +++ b/clippy_lints/src/matches/match_wild_enum.rs @@ -80,18 +80,20 @@ pub(crate) fn check(cx: &LateContext<'_>, ex: &Expr<'_>, arms: &[Arm<'_>]) { path }, PatKind::TupleStruct(path, patterns, ..) => { - if let Some(id) = cx.qpath_res(path, pat.hir_id).opt_def_id() { - if arm.guard.is_none() && patterns.iter().all(|p| !is_refutable(cx, p)) { - missing_variants.retain(|e| e.ctor_def_id() != Some(id)); - } + if let Some(id) = cx.qpath_res(path, pat.hir_id).opt_def_id() + && arm.guard.is_none() + && patterns.iter().all(|p| !is_refutable(cx, p)) + { + missing_variants.retain(|e| e.ctor_def_id() != Some(id)); } path }, PatKind::Struct(path, patterns, ..) => { - if let Some(id) = cx.qpath_res(path, pat.hir_id).opt_def_id() { - if arm.guard.is_none() && patterns.iter().all(|p| !is_refutable(cx, p.pat)) { - missing_variants.retain(|e| e.def_id != id); - } + if let Some(id) = cx.qpath_res(path, pat.hir_id).opt_def_id() + && arm.guard.is_none() + && patterns.iter().all(|p| !is_refutable(cx, p.pat)) + { + missing_variants.retain(|e| e.def_id != id); } path }, diff --git a/clippy_lints/src/matches/match_wild_err_arm.rs b/clippy_lints/src/matches/match_wild_err_arm.rs index d0d2025878e48..8ce8453360f78 100644 --- a/clippy_lints/src/matches/match_wild_err_arm.rs +++ b/clippy_lints/src/matches/match_wild_err_arm.rs @@ -26,11 +26,12 @@ pub(crate) fn check<'tcx>(cx: &LateContext<'tcx>, ex: &Expr<'tcx>, arms: &[Arm<' if !matching_wild { // Looking for unused bindings (i.e.: `_e`) for pat in inner { - if let PatKind::Binding(_, id, ident, None) = pat.kind { - if ident.as_str().starts_with('_') && !is_local_used(cx, arm.body, id) { - ident_bind_name = ident.name; - matching_wild = true; - } + if let PatKind::Binding(_, id, ident, None) = pat.kind + && ident.as_str().starts_with('_') + && !is_local_used(cx, arm.body, id) + { + ident_bind_name = ident.name; + matching_wild = true; } } } diff --git a/clippy_lints/src/matches/mod.rs b/clippy_lints/src/matches/mod.rs index 2b9173e6f4122..c6ebd6144c76f 100644 --- a/clippy_lints/src/matches/mod.rs +++ b/clippy_lints/src/matches/mod.rs @@ -8,7 +8,6 @@ mod manual_utils; mod match_as_ref; mod match_bool; mod match_like_matches; -mod match_on_vec_items; mod match_ref_pats; mod match_same_arms; mod match_single_binding; @@ -724,38 +723,39 @@ declare_clippy_lint! { declare_clippy_lint! { /// ### What it does - /// Checks for `match vec[idx]` or `match vec[n..m]`. + /// Checks if a `match` or `if let` expression can be simplified using + /// `.unwrap_or_default()`. /// /// ### Why is this bad? - /// This can panic at runtime. + /// It can be done in one call with `.unwrap_or_default()`. /// /// ### Example - /// ```rust, no_run - /// let arr = vec![0, 1, 2, 3]; - /// let idx = 1; + /// ```no_run + /// let x: Option = Some(String::new()); + /// let y: String = match x { + /// Some(v) => v, + /// None => String::new(), + /// }; /// - /// match arr[idx] { - /// 0 => println!("{}", 0), - /// 1 => println!("{}", 3), - /// _ => {}, - /// } + /// let x: Option> = Some(Vec::new()); + /// let y: Vec = if let Some(v) = x { + /// v + /// } else { + /// Vec::new() + /// }; /// ``` - /// /// Use instead: - /// ```rust, no_run - /// let arr = vec![0, 1, 2, 3]; - /// let idx = 1; + /// ```no_run + /// let x: Option = Some(String::new()); + /// let y: String = x.unwrap_or_default(); /// - /// match arr.get(idx) { - /// Some(0) => println!("{}", 0), - /// Some(1) => println!("{}", 3), - /// _ => {}, - /// } + /// let x: Option> = Some(Vec::new()); + /// let y: Vec = x.unwrap_or_default(); /// ``` - #[clippy::version = "1.45.0"] - pub MATCH_ON_VEC_ITEMS, - pedantic, - "matching on vector elements can panic" + #[clippy::version = "1.79.0"] + pub MANUAL_UNWRAP_OR_DEFAULT, + suspicious, + "check if a `match` or `if let` can be simplified with `unwrap_or_default`" } declare_clippy_lint! { @@ -1040,7 +1040,7 @@ impl_lint_pass!(Matches => [ NEEDLESS_MATCH, COLLAPSIBLE_MATCH, MANUAL_UNWRAP_OR, - MATCH_ON_VEC_ITEMS, + MANUAL_UNWRAP_OR_DEFAULT, MATCH_STR_CASE_MISMATCH, SIGNIFICANT_DROP_IN_SCRUTINEE, TRY_ERR, @@ -1118,7 +1118,6 @@ impl<'tcx> LateLintPass<'tcx> for Matches { match_wild_enum::check(cx, ex, arms); match_as_ref::check(cx, ex, arms, expr); needless_match::check_match(cx, ex, arms, expr); - match_on_vec_items::check(cx, ex); match_str_case_mismatch::check(cx, ex, arms); redundant_guards::check(cx, arms, self.msrv); diff --git a/clippy_lints/src/matches/needless_match.rs b/clippy_lints/src/matches/needless_match.rs index 7e65d586110e5..6c5d7cab2036e 100644 --- a/clippy_lints/src/matches/needless_match.rs +++ b/clippy_lints/src/matches/needless_match.rs @@ -67,10 +67,10 @@ fn check_all_arms(cx: &LateContext<'_>, match_expr: &Expr<'_>, arms: &[Arm<'_>]) for arm in arms { let arm_expr = peel_blocks_with_stmt(arm.body); - if let Some(guard_expr) = &arm.guard { - if guard_expr.can_have_side_effects() { - return false; - } + if let Some(guard_expr) = &arm.guard + && guard_expr.can_have_side_effects() + { + return false; } if let PatKind::Wild = arm.pat.kind { diff --git a/clippy_lints/src/matches/overlapping_arms.rs b/clippy_lints/src/matches/overlapping_arms.rs index 4184f8b9e6e8a..d3136c89178e6 100644 --- a/clippy_lints/src/matches/overlapping_arms.rs +++ b/clippy_lints/src/matches/overlapping_arms.rs @@ -11,17 +11,17 @@ use super::MATCH_OVERLAPPING_ARM; pub(crate) fn check<'tcx>(cx: &LateContext<'tcx>, ex: &'tcx Expr<'_>, arms: &'tcx [Arm<'_>]) { if arms.len() >= 2 && cx.typeck_results().expr_ty(ex).is_integral() { let ranges = all_ranges(cx, arms, cx.typeck_results().expr_ty(ex)); - if !ranges.is_empty() { - if let Some((start, end)) = overlapping(&ranges) { - span_lint_and_note( - cx, - MATCH_OVERLAPPING_ARM, - start.span, - "some ranges overlap", - Some(end.span), - "overlaps with this", - ); - } + if !ranges.is_empty() + && let Some((start, end)) = overlapping(&ranges) + { + span_lint_and_note( + cx, + MATCH_OVERLAPPING_ARM, + start.span, + "some ranges overlap", + Some(end.span), + "overlaps with this", + ); } } } diff --git a/clippy_lints/src/matches/redundant_pattern_match.rs b/clippy_lints/src/matches/redundant_pattern_match.rs index 722ea7042dd7f..db20be40f27ea 100644 --- a/clippy_lints/src/matches/redundant_pattern_match.rs +++ b/clippy_lints/src/matches/redundant_pattern_match.rs @@ -4,7 +4,7 @@ use clippy_utils::source::walk_span_to_context; use clippy_utils::sugg::{Sugg, make_unop}; use clippy_utils::ty::{is_type_diagnostic_item, needs_ordered_drop}; use clippy_utils::visitors::{any_temporaries_need_ordered_drop, for_each_expr_without_closures}; -use clippy_utils::{higher, is_expn_of, is_trait_method}; +use clippy_utils::{higher, is_expn_of, is_trait_method, sym}; use rustc_ast::ast::LitKind; use rustc_errors::Applicability; use rustc_hir::LangItem::{self, OptionNone, OptionSome, PollPending, PollReady, ResultErr, ResultOk}; @@ -12,7 +12,7 @@ use rustc_hir::def::{DefKind, Res}; use rustc_hir::{Arm, Expr, ExprKind, Node, Pat, PatExpr, PatExprKind, PatKind, QPath, UnOp}; use rustc_lint::LateContext; use rustc_middle::ty::{self, GenericArgKind, Ty}; -use rustc_span::{Span, Symbol, sym}; +use rustc_span::{Span, Symbol}; use std::fmt::Write; use std::ops::ControlFlow; @@ -138,9 +138,9 @@ fn find_method_and_type<'tcx>( Some(("is_some()", op_ty)) } else if Some(id) == lang_items.poll_ready_variant() { Some(("is_ready()", op_ty)) - } else if is_pat_variant(cx, check_pat, qpath, Item::Diag(sym::IpAddr, sym!(V4))) { + } else if is_pat_variant(cx, check_pat, qpath, Item::Diag(sym::IpAddr, sym::V4)) { Some(("is_ipv4()", op_ty)) - } else if is_pat_variant(cx, check_pat, qpath, Item::Diag(sym::IpAddr, sym!(V6))) { + } else if is_pat_variant(cx, check_pat, qpath, Item::Diag(sym::IpAddr, sym::V6)) { Some(("is_ipv6()", op_ty)) } else { None @@ -255,7 +255,7 @@ fn find_method_sugg_for_if_let<'tcx>( }; let sugg = Sugg::hir_with_context(cx, result_expr, ctxt, "_", &mut app) - .maybe_par() + .maybe_paren() .to_string(); diag.span_suggestion(span, "try", format!("{keyword} {sugg}.{good_method}"), app); @@ -279,7 +279,7 @@ pub(super) fn check_match<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, op _ => op, }; let mut app = Applicability::MachineApplicable; - let receiver_sugg = Sugg::hir_with_applicability(cx, result_expr, "_", &mut app).maybe_par(); + let receiver_sugg = Sugg::hir_with_applicability(cx, result_expr, "_", &mut app).maybe_paren(); let mut sugg = format!("{receiver_sugg}.{good_method}"); if let Some(guard) = maybe_guard { @@ -303,7 +303,7 @@ pub(super) fn check_match<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, op } let guard = Sugg::hir(cx, guard, ".."); - let _ = write!(sugg, " && {}", guard.maybe_par()); + let _ = write!(sugg, " && {}", guard.maybe_paren()); } span_lint_and_sugg( @@ -345,8 +345,8 @@ fn found_good_method<'tcx>( arms, path_left, path_right, - Item::Diag(sym::IpAddr, sym!(V4)), - Item::Diag(sym::IpAddr, sym!(V6)), + Item::Diag(sym::IpAddr, sym::V4), + Item::Diag(sym::IpAddr, sym::V6), "is_ipv4()", "is_ipv6()", ) @@ -437,8 +437,8 @@ fn get_good_method<'tcx>( "None" => (Item::Lang(OptionNone), "is_none()", "is_some()"), "Ready" => (Item::Lang(PollReady), "is_ready()", "is_pending()"), "Pending" => (Item::Lang(PollPending), "is_pending()", "is_ready()"), - "V4" => (Item::Diag(sym::IpAddr, sym!(V4)), "is_ipv4()", "is_ipv6()"), - "V6" => (Item::Diag(sym::IpAddr, sym!(V6)), "is_ipv6()", "is_ipv4()"), + "V4" => (Item::Diag(sym::IpAddr, sym::V4), "is_ipv4()", "is_ipv6()"), + "V6" => (Item::Diag(sym::IpAddr, sym::V6), "is_ipv6()", "is_ipv4()"), _ => return None, }; return find_good_method_for_matches_macro( diff --git a/clippy_lints/src/matches/significant_drop_in_scrutinee.rs b/clippy_lints/src/matches/significant_drop_in_scrutinee.rs index 37bac561a6e06..d7dc7604088f7 100644 --- a/clippy_lints/src/matches/significant_drop_in_scrutinee.rs +++ b/clippy_lints/src/matches/significant_drop_in_scrutinee.rs @@ -182,17 +182,16 @@ impl<'a, 'tcx> SigDropChecker<'a, 'tcx> { } fn has_sig_drop_attr_impl(&mut self, ty: Ty<'tcx>) -> bool { - if let Some(adt) = ty.ty_adt_def() { - if get_attr( + if let Some(adt) = ty.ty_adt_def() + && get_attr( self.cx.sess(), self.cx.tcx.get_attrs_unchecked(adt.did()), "has_significant_drop", ) .count() > 0 - { - return true; - } + { + return true; } if !self.seen_types.insert(ty) { diff --git a/clippy_lints/src/matches/single_match.rs b/clippy_lints/src/matches/single_match.rs index 836c46240ce7b..08c0caa4266cc 100644 --- a/clippy_lints/src/matches/single_match.rs +++ b/clippy_lints/src/matches/single_match.rs @@ -1,5 +1,7 @@ use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::source::{SpanRangeExt, expr_block, snippet, snippet_block_with_context}; +use clippy_utils::source::{ + SpanRangeExt, expr_block, snippet, snippet_block_with_context, snippet_with_applicability, snippet_with_context, +}; use clippy_utils::ty::implements_trait; use clippy_utils::{ is_lint_allowed, is_unit_expr, peel_blocks, peel_hir_pat_refs, peel_middle_ty_refs, peel_n_hir_expr_refs, @@ -34,8 +36,7 @@ fn empty_arm_has_comment(cx: &LateContext<'_>, span: Span) -> bool { #[rustfmt::skip] pub(crate) fn check<'tcx>(cx: &LateContext<'tcx>, ex: &'tcx Expr<'_>, arms: &'tcx [Arm<'_>], expr: &'tcx Expr<'_>, contains_comments: bool) { if let [arm1, arm2] = arms - && arm1.guard.is_none() - && arm2.guard.is_none() + && !arms.iter().any(|arm| arm.guard.is_some() || arm.pat.span.from_expansion()) && !expr.span.from_expansion() // don't lint for or patterns for now, this makes // the lint noisy in unnecessary situations @@ -106,7 +107,7 @@ fn report_single_pattern( format!(" else {}", expr_block(cx, els, ctxt, "..", Some(expr.span), &mut app)) }); - if snippet(cx, ex.span, "..") == snippet(cx, arm.pat.span, "..") { + if ex.span.eq_ctxt(expr.span) && snippet(cx, ex.span, "..") == snippet(cx, arm.pat.span, "..") { let msg = "this pattern is irrefutable, `match` is useless"; let (sugg, help) = if is_unit_expr(arm.body) { (String::new(), "`match` expression can be removed") @@ -163,10 +164,10 @@ fn report_single_pattern( let msg = "you seem to be trying to use `match` for an equality check. Consider using `if`"; let sugg = format!( "if {} == {}{} {}{els_str}", - snippet(cx, ex.span, ".."), + snippet_with_context(cx, ex.span, ctxt, "..", &mut app).0, // PartialEq for different reference counts may not exist. "&".repeat(ref_count_diff), - snippet(cx, arm.pat.span, ".."), + snippet_with_applicability(cx, arm.pat.span, "..", &mut app), expr_block(cx, arm.body, ctxt, "..", Some(expr.span), &mut app), ); (msg, sugg) @@ -174,8 +175,8 @@ fn report_single_pattern( let msg = "you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`"; let sugg = format!( "if let {} = {} {}{els_str}", - snippet(cx, arm.pat.span, ".."), - snippet(cx, ex.span, ".."), + snippet_with_applicability(cx, arm.pat.span, "..", &mut app), + snippet_with_context(cx, ex.span, ctxt, "..", &mut app).0, expr_block(cx, arm.body, ctxt, "..", Some(expr.span), &mut app), ); (msg, sugg) diff --git a/clippy_lints/src/matches/wild_in_or_pats.rs b/clippy_lints/src/matches/wild_in_or_pats.rs index b75d1ab9a7aa3..43102d78bfebd 100644 --- a/clippy_lints/src/matches/wild_in_or_pats.rs +++ b/clippy_lints/src/matches/wild_in_or_pats.rs @@ -15,18 +15,18 @@ pub(crate) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, arms: &[Arm<'_>]) { return; } for arm in arms { - if let PatKind::Or(fields) = arm.pat.kind { + if let PatKind::Or(fields) = arm.pat.kind // look for multiple fields in this arm that contains at least one Wild pattern - if fields.len() > 1 && fields.iter().any(is_wild) { - span_lint_and_help( - cx, - WILDCARD_IN_OR_PATTERNS, - arm.pat.span, - "wildcard pattern covers any other pattern as it will match anyway", - None, - "consider handling `_` separately", - ); - } + && fields.len() > 1 && fields.iter().any(is_wild) + { + span_lint_and_help( + cx, + WILDCARD_IN_OR_PATTERNS, + arm.pat.span, + "wildcard pattern covers any other pattern as it will match anyway", + None, + "consider handling `_` separately", + ); } } } diff --git a/clippy_lints/src/mem_replace.rs b/clippy_lints/src/mem_replace.rs index a0919947b3fc7..a54d835b538c1 100644 --- a/clippy_lints/src/mem_replace.rs +++ b/clippy_lints/src/mem_replace.rs @@ -145,7 +145,7 @@ fn check_replace_option_with_none(cx: &LateContext<'_>, src: &Expr<'_>, dest: &E "consider `Option::take()` instead", format!( "{}.take()", - Sugg::hir_with_context(cx, sugg_expr, expr_span.ctxt(), "", &mut applicability).maybe_par() + Sugg::hir_with_context(cx, sugg_expr, expr_span.ctxt(), "", &mut applicability).maybe_paren() ), applicability, ); @@ -178,7 +178,7 @@ fn check_replace_option_with_some( "consider `Option::replace()` instead", format!( "{}.replace({})", - Sugg::hir_with_context(cx, sugg_expr, expr_span.ctxt(), "_", &mut applicability).maybe_par(), + Sugg::hir_with_context(cx, sugg_expr, expr_span.ctxt(), "_", &mut applicability).maybe_paren(), snippet_with_applicability(cx, src_arg.span, "_", &mut applicability) ), applicability, @@ -304,14 +304,12 @@ impl<'tcx> LateLintPass<'tcx> for MemReplace { && let ExprKind::Path(ref func_qpath) = func.kind && let Some(def_id) = cx.qpath_res(func_qpath, func.hir_id).opt_def_id() && cx.tcx.is_diagnostic_item(sym::mem_replace, def_id) - { // Check that second argument is `Option::None` - if !check_replace_option_with_none(cx, src, dest, expr.span) - && !check_replace_option_with_some(cx, src, dest, expr.span, self.msrv) - && !check_replace_with_default(cx, src, dest, expr, self.msrv) - { - check_replace_with_uninit(cx, src, dest, expr.span); - } + && !check_replace_option_with_none(cx, src, dest, expr.span) + && !check_replace_option_with_some(cx, src, dest, expr.span, self.msrv) + && !check_replace_with_default(cx, src, dest, expr, self.msrv) + { + check_replace_with_uninit(cx, src, dest, expr.span); } } } diff --git a/clippy_lints/src/methods/bind_instead_of_map.rs b/clippy_lints/src/methods/bind_instead_of_map.rs index 1e9b29f567f41..f8520c23ea503 100644 --- a/clippy_lints/src/methods/bind_instead_of_map.rs +++ b/clippy_lints/src/methods/bind_instead_of_map.rs @@ -192,10 +192,10 @@ impl BindInsteadOfMap { } fn is_variant(&self, cx: &LateContext<'_>, res: Res) -> bool { - if let Res::Def(DefKind::Ctor(CtorOf::Variant, CtorKind::Fn), id) = res { - if let Some(variant_id) = cx.tcx.lang_items().get(self.variant_lang_item) { - return cx.tcx.parent(id) == variant_id; - } + if let Res::Def(DefKind::Ctor(CtorOf::Variant, CtorKind::Fn), id) = res + && let Some(variant_id) = cx.tcx.lang_items().get(self.variant_lang_item) + { + return cx.tcx.parent(id) == variant_id; } false } diff --git a/clippy_lints/src/methods/case_sensitive_file_extension_comparisons.rs b/clippy_lints/src/methods/case_sensitive_file_extension_comparisons.rs index 18568e3661fe5..d07870d4951e0 100644 --- a/clippy_lints/src/methods/case_sensitive_file_extension_comparisons.rs +++ b/clippy_lints/src/methods/case_sensitive_file_extension_comparisons.rs @@ -1,4 +1,5 @@ use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::{SpanRangeExt, indent_of, reindent_multiline}; use clippy_utils::ty::is_type_lang_item; use rustc_ast::ast::LitKind; @@ -16,14 +17,15 @@ pub(super) fn check<'tcx>( call_span: Span, recv: &'tcx Expr<'_>, arg: &'tcx Expr<'_>, + msrv: Msrv, ) { - if let ExprKind::MethodCall(path_segment, ..) = recv.kind { - if matches!( + if let ExprKind::MethodCall(path_segment, ..) = recv.kind + && matches!( path_segment.ident.name.as_str(), "to_lowercase" | "to_uppercase" | "to_ascii_lowercase" | "to_ascii_uppercase" - ) { - return; - } + ) + { + return; } if let Some(method_id) = cx.typeck_results().type_dependent_def_id(expr.hir_id) @@ -58,11 +60,15 @@ pub(super) fn check<'tcx>( let suggestion_source = reindent_multiline( &format!( - "std::path::Path::new({}) + "std::path::Path::new({recv_source}) .extension() - .map_or(false, |ext| ext.eq_ignore_ascii_case(\"{}\"))", - recv_source, - ext_str.strip_prefix('.').unwrap() + .{}|ext| ext.eq_ignore_ascii_case(\"{}\"))", + if msrv.meets(cx, msrvs::OPTION_RESULT_IS_VARIANT_AND) { + "is_some_and(" + } else { + "map_or(false, " + }, + ext_str.strip_prefix('.').unwrap(), ), true, Some(indent_of(cx, call_span).unwrap_or(0) + 4), diff --git a/clippy_lints/src/methods/clone_on_copy.rs b/clippy_lints/src/methods/clone_on_copy.rs index 1ee27d90d0545..2ecf3eb897988 100644 --- a/clippy_lints/src/methods/clone_on_copy.rs +++ b/clippy_lints/src/methods/clone_on_copy.rs @@ -40,10 +40,10 @@ pub(super) fn check( .map_or_else(|| cx.typeck_results().expr_ty(arg), |a| a.target); let ty = cx.typeck_results().expr_ty(expr); - if let ty::Ref(_, inner, _) = arg_ty.kind() { - if let ty::Ref(..) = inner.kind() { - return; // don't report clone_on_copy - } + if let ty::Ref(_, inner, _) = arg_ty.kind() + && let ty::Ref(..) = inner.kind() + { + return; // don't report clone_on_copy } if is_copy(cx, ty) { diff --git a/clippy_lints/src/methods/double_ended_iterator_last.rs b/clippy_lints/src/methods/double_ended_iterator_last.rs index b5adc69e9a790..e666f31217cc8 100644 --- a/clippy_lints/src/methods/double_ended_iterator_last.rs +++ b/clippy_lints/src/methods/double_ended_iterator_last.rs @@ -1,5 +1,5 @@ use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::ty::implements_trait; +use clippy_utils::ty::{has_non_owning_mutable_access, implements_trait}; use clippy_utils::{is_mutable, is_trait_method, path_to_local}; use rustc_errors::Applicability; use rustc_hir::{Expr, Node, PatKind}; @@ -27,10 +27,15 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &'_ Expr<'_>, self_expr: &'_ Exp && let Some(last_def) = cx.tcx.provided_trait_methods(item).find(|m| m.name().as_str() == "last") // if the resolved method is the same as the provided definition && fn_def.def_id() == last_def.def_id + && let self_ty = cx.typeck_results().expr_ty(self_expr) + && !has_non_owning_mutable_access(cx, self_ty) { let mut sugg = vec![(call_span, String::from("next_back()"))]; let mut dont_apply = false; + // if `self_expr` is a reference, it is mutable because it is used for `.last()` + // TODO: Change this to lint only when the referred iterator is not used later. If it is used later, + // changing to `next_back()` may change its behavior. if !(is_mutable(cx, self_expr) || self_type.is_ref()) { if let Some(hir_id) = path_to_local(self_expr) && let Node::Pat(pat) = cx.tcx.hir_node(hir_id) diff --git a/clippy_lints/src/methods/expect_fun_call.rs b/clippy_lints/src/methods/expect_fun_call.rs index daa6e0e7f940c..f5688e370a478 100644 --- a/clippy_lints/src/methods/expect_fun_call.rs +++ b/clippy_lints/src/methods/expect_fun_call.rs @@ -54,10 +54,11 @@ pub(super) fn check<'tcx>( if is_type_lang_item(cx, arg_ty, hir::LangItem::String) { return false; } - if let ty::Ref(_, ty, ..) = arg_ty.kind() { - if ty.is_str() && can_be_static_str(cx, arg) { - return false; - } + if let ty::Ref(_, ty, ..) = arg_ty.kind() + && ty.is_str() + && can_be_static_str(cx, arg) + { + return false; } true } diff --git a/clippy_lints/src/methods/filter_map.rs b/clippy_lints/src/methods/filter_map.rs index ae300cd5fe56d..da123f13d46fa 100644 --- a/clippy_lints/src/methods/filter_map.rs +++ b/clippy_lints/src/methods/filter_map.rs @@ -2,7 +2,7 @@ use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; use clippy_utils::macros::{is_panic, matching_root_macro_call, root_macro_call}; use clippy_utils::source::{indent_of, reindent_multiline, snippet}; use clippy_utils::ty::is_type_diagnostic_item; -use clippy_utils::{SpanlessEq, higher, is_trait_method, path_to_local_id, peel_blocks}; +use clippy_utils::{SpanlessEq, higher, is_trait_method, path_to_local_id, peel_blocks, sym}; use hir::{Body, HirId, MatchSource, Pat}; use rustc_errors::Applicability; use rustc_hir as hir; @@ -11,7 +11,7 @@ use rustc_hir::{Closure, Expr, ExprKind, PatKind, PathSegment, QPath, UnOp}; use rustc_lint::LateContext; use rustc_middle::ty::adjustment::Adjust; use rustc_span::Span; -use rustc_span::symbol::{Ident, Symbol, sym}; +use rustc_span::symbol::{Ident, Symbol}; use super::{MANUAL_FILTER_MAP, MANUAL_FIND_MAP, OPTION_FILTER_MAP, RESULT_FILTER_MAP}; @@ -43,10 +43,10 @@ fn is_method(cx: &LateContext<'_>, expr: &Expr<'_>, method_name: Symbol) -> bool } fn is_option_filter_map(cx: &LateContext<'_>, filter_arg: &Expr<'_>, map_arg: &Expr<'_>) -> bool { - is_method(cx, map_arg, sym::unwrap) && is_method(cx, filter_arg, sym!(is_some)) + is_method(cx, map_arg, sym::unwrap) && is_method(cx, filter_arg, sym::is_some) } fn is_ok_filter_map(cx: &LateContext<'_>, filter_arg: &Expr<'_>, map_arg: &Expr<'_>) -> bool { - is_method(cx, map_arg, sym::unwrap) && is_method(cx, filter_arg, sym!(is_ok)) + is_method(cx, map_arg, sym::unwrap) && is_method(cx, filter_arg, sym::is_ok) } #[derive(Debug, Copy, Clone)] @@ -429,16 +429,15 @@ fn is_find_or_filter<'a>( } fn acceptable_methods(method: &PathSegment<'_>) -> bool { - let methods: [Symbol; 8] = [ - sym::clone, - sym::as_ref, - sym!(copied), - sym!(cloned), - sym!(as_deref), - sym!(as_mut), - sym!(as_deref_mut), - sym!(to_owned), - ]; - - methods.contains(&method.ident.name) + matches!( + method.ident.name, + sym::clone + | sym::as_ref + | sym::copied + | sym::cloned + | sym::as_deref + | sym::as_mut + | sym::as_deref_mut + | sym::to_owned + ) } diff --git a/clippy_lints/src/methods/filter_map_bool_then.rs b/clippy_lints/src/methods/filter_map_bool_then.rs index f7e116c5310ed..965993808f6b5 100644 --- a/clippy_lints/src/methods/filter_map_bool_then.rs +++ b/clippy_lints/src/methods/filter_map_bool_then.rs @@ -1,10 +1,14 @@ use super::FILTER_MAP_BOOL_THEN; -use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::SpanRangeExt; use clippy_utils::ty::is_copy; -use clippy_utils::{is_from_proc_macro, is_trait_method, peel_blocks}; +use clippy_utils::{ + CaptureKind, can_move_expr_to_closure, contains_return, is_from_proc_macro, is_trait_method, peel_blocks, +}; +use rustc_ast::Mutability; +use rustc_data_structures::fx::FxHashSet; use rustc_errors::Applicability; -use rustc_hir::{Expr, ExprKind}; +use rustc_hir::{Expr, ExprKind, HirId, Param, Pat}; use rustc_lint::{LateContext, LintContext}; use rustc_middle::ty::Binder; use rustc_middle::ty::adjustment::Adjust; @@ -44,17 +48,69 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>, arg: & && let Some(filter) = recv.span.get_source_text(cx) && let Some(map) = then_body.span.get_source_text(cx) { - span_lint_and_sugg( + span_lint_and_then( cx, FILTER_MAP_BOOL_THEN, call_span, "usage of `bool::then` in `filter_map`", - "use `filter` then `map` instead", - format!( - "filter(|&{param_snippet}| {derefs}{filter}).map(|{param_snippet}| {map})", - derefs = "*".repeat(needed_derefs) - ), - Applicability::MachineApplicable, + |diag| { + if can_filter_and_then_move_to_closure(cx, ¶m, recv, then_body) { + diag.span_suggestion( + call_span, + "use `filter` then `map` instead", + format!( + "filter(|&{param_snippet}| {derefs}{filter}).map(|{param_snippet}| {map})", + derefs = "*".repeat(needed_derefs) + ), + Applicability::MachineApplicable, + ); + } else { + diag.help("consider using `filter` then `map` instead"); + } + }, ); } } + +/// Returns a set of all bindings found in the given pattern. +fn find_bindings_from_pat(pat: &Pat<'_>) -> FxHashSet { + let mut bindings = FxHashSet::default(); + pat.walk(|p| { + if let rustc_hir::PatKind::Binding(_, hir_id, _, _) = p.kind { + bindings.insert(hir_id); + } + true + }); + bindings +} + +/// Returns true if we can take a closure parameter and have it in both the `filter` function and +/// the`map` function. This is not the case if: +/// +/// - The `filter` would contain an early return, +/// - `filter` and `then` contain captures, and any of those are &mut +fn can_filter_and_then_move_to_closure<'tcx>( + cx: &LateContext<'tcx>, + param: &Param<'tcx>, + filter: &'tcx Expr<'tcx>, + then: &'tcx Expr<'tcx>, +) -> bool { + if contains_return(filter) { + return false; + } + + let Some(filter_captures) = can_move_expr_to_closure(cx, filter) else { + return true; + }; + let Some(then_captures) = can_move_expr_to_closure(cx, then) else { + return true; + }; + + let param_bindings = find_bindings_from_pat(param.pat); + filter_captures.iter().all(|(hir_id, filter_cap)| { + param_bindings.contains(hir_id) + || !then_captures + .get(hir_id) + .is_some_and(|then_cap| matches!(*filter_cap | *then_cap, CaptureKind::Ref(Mutability::Mut))) + }) +} diff --git a/clippy_lints/src/methods/from_iter_instead_of_collect.rs b/clippy_lints/src/methods/from_iter_instead_of_collect.rs index f4840785584ef..045363058d198 100644 --- a/clippy_lints/src/methods/from_iter_instead_of_collect.rs +++ b/clippy_lints/src/methods/from_iter_instead_of_collect.rs @@ -1,25 +1,31 @@ +use std::fmt::Write as _; + use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::source::SpanRangeExt; +use clippy_utils::source::snippet_with_applicability; use clippy_utils::ty::implements_trait; use clippy_utils::{is_path_diagnostic_item, sugg}; use rustc_errors::Applicability; -use rustc_hir as hir; +use rustc_hir::def::Res; +use rustc_hir::{self as hir, Expr, ExprKind, GenericArg, QPath, TyKind}; use rustc_lint::LateContext; -use rustc_middle::ty::Ty; +use rustc_middle::ty::GenericParamDefKind; use rustc_span::sym; use super::FROM_ITER_INSTEAD_OF_COLLECT; -pub(super) fn check(cx: &LateContext<'_>, expr: &hir::Expr<'_>, args: &[hir::Expr<'_>], func: &hir::Expr<'_>) { +pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, args: &[Expr<'_>], func: &Expr<'_>) { if is_path_diagnostic_item(cx, func, sym::from_iter_fn) - && let ty = cx.typeck_results().expr_ty(expr) && let arg_ty = cx.typeck_results().expr_ty(&args[0]) && let Some(iter_id) = cx.tcx.get_diagnostic_item(sym::Iterator) && implements_trait(cx, arg_ty, iter_id, &[]) { - // `expr` implements `FromIterator` trait - let iter_expr = sugg::Sugg::hir(cx, &args[0], "..").maybe_par(); - let turbofish = extract_turbofish(cx, expr, ty); + let mut app = Applicability::MaybeIncorrect; + let turbofish = match func.kind { + ExprKind::Path(QPath::TypeRelative(hir_ty, _)) => build_full_type(cx, hir_ty, &mut app), + ExprKind::Path(QPath::Resolved(Some(self_ty), _)) => build_full_type(cx, self_ty, &mut app), + _ => return, + }; + let iter_expr = sugg::Sugg::hir(cx, &args[0], "..").maybe_paren(); let sugg = format!("{iter_expr}.collect::<{turbofish}>()"); span_lint_and_sugg( cx, @@ -28,54 +34,47 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &hir::Expr<'_>, args: &[hir::Exp "usage of `FromIterator::from_iter`", "use `.collect()` instead of `::from_iter()`", sugg, - Applicability::MaybeIncorrect, + app, ); } } -fn extract_turbofish(cx: &LateContext<'_>, expr: &hir::Expr<'_>, ty: Ty<'_>) -> String { - fn strip_angle_brackets(s: &str) -> Option<&str> { - s.strip_prefix('<')?.strip_suffix('>') - } - - let call_site = expr.span.source_callsite(); - if let Some(snippet) = call_site.get_source_text(cx) - && let snippet_split = snippet.split("::").collect::>() - && let Some((_, elements)) = snippet_split.split_last() +/// Build a type which can be used in a turbofish syntax from `hir_ty`, either by copying the +/// existing generic arguments with the exception of elided lifetimes, or by inserting placeholders +/// for types and consts without default values. +fn build_full_type(cx: &LateContext<'_>, hir_ty: &hir::Ty<'_>, app: &mut Applicability) -> String { + if let TyKind::Path(ty_qpath) = hir_ty.kind + && let QPath::Resolved(None, ty_path) = &ty_qpath + && let Res::Def(_, ty_did) = ty_path.res { - if let [type_specifier, _] = snippet_split.as_slice() - && let Some(type_specifier) = strip_angle_brackets(type_specifier) - && let Some((type_specifier, ..)) = type_specifier.split_once(" as ") - { - type_specifier.to_string() + let mut ty_str = itertools::join(ty_path.segments.iter().map(|s| s.ident), "::"); + let mut first = true; + let mut append = |arg: &str| { + write!(&mut ty_str, "{}{arg}", [", ", "<"][usize::from(first)]).unwrap(); + first = false; + }; + if let Some(args) = ty_path.segments.last().and_then(|segment| segment.args) { + args.args + .iter() + .filter(|arg| !matches!(arg, GenericArg::Lifetime(lt) if lt.is_elided())) + .for_each(|arg| append(&snippet_with_applicability(cx, arg.span().source_callsite(), "_", app))); } else { - // is there a type specifier? (i.e.: like `` in `collections::BTreeSet::::`) - if let Some(type_specifier) = snippet_split.iter().find(|e| strip_angle_brackets(e).is_some()) { - // remove the type specifier from the path elements - let without_ts = elements - .iter() - .filter_map(|e| { - if e == type_specifier { - None - } else { - Some((*e).to_string()) - } - }) - .collect::>(); - // join and add the type specifier at the end (i.e.: `collections::BTreeSet`) - format!("{}{type_specifier}", without_ts.join("::")) - } else { - // type is not explicitly specified so wildcards are needed - // i.e.: 2 wildcards in `std::collections::BTreeMap<&i32, &char>` - let ty_str = ty.to_string(); - let start = ty_str.find('<').unwrap_or(0); - let end = ty_str.find('>').unwrap_or(ty_str.len()); - let nb_wildcard = ty_str[start..end].split(',').count(); - let wildcards = format!("_{}", ", _".repeat(nb_wildcard - 1)); - format!("{}<{wildcards}>", elements.join("::")) - } + cx.tcx + .generics_of(ty_did) + .own_params + .iter() + .filter(|param| { + matches!( + param.kind, + GenericParamDefKind::Type { has_default: false, .. } + | GenericParamDefKind::Const { has_default: false, .. } + ) + }) + .for_each(|_| append("_")); } + ty_str.push_str([">", ""][usize::from(first)]); + ty_str } else { - ty.to_string() + snippet_with_applicability(cx, hir_ty.span.source_callsite(), "_", app).into() } } diff --git a/clippy_lints/src/methods/is_empty.rs b/clippy_lints/src/methods/is_empty.rs index 4c81b22861b4c..545bef1a4c5bc 100644 --- a/clippy_lints/src/methods/is_empty.rs +++ b/clippy_lints/src/methods/is_empty.rs @@ -14,15 +14,13 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &'_ Expr<'_>, receiver: &Expr<'_ if expr.span.in_external_macro(cx.sess().source_map()) || !receiver.span.eq_ctxt(expr.span) { return; } - if let Some(parent) = get_parent_expr(cx, expr) { - if let Some(parent) = get_parent_expr(cx, parent) { - if is_inside_always_const_context(cx.tcx, expr.hir_id) - && let Some(macro_call) = root_macro_call(parent.span) - && is_assert_macro(cx, macro_call.def_id) - { - return; - } - } + if let Some(parent) = get_parent_expr(cx, expr) + && let Some(parent) = get_parent_expr(cx, parent) + && is_inside_always_const_context(cx.tcx, expr.hir_id) + && let Some(macro_call) = root_macro_call(parent.span) + && is_assert_macro(cx, macro_call.def_id) + { + return; } let init_expr = expr_or_init(cx, receiver); if !receiver.span.eq_ctxt(init_expr.span) { diff --git a/clippy_lints/src/methods/iter_cloned_collect.rs b/clippy_lints/src/methods/iter_cloned_collect.rs index 49de83885a1ca..17cc07b91c5da 100644 --- a/clippy_lints/src/methods/iter_cloned_collect.rs +++ b/clippy_lints/src/methods/iter_cloned_collect.rs @@ -1,16 +1,22 @@ use crate::methods::utils::derefs_to_slice; use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::ty::is_type_diagnostic_item; +use clippy_utils::ty::{get_iterator_item_ty, is_type_diagnostic_item}; use rustc_errors::Applicability; use rustc_hir as hir; use rustc_lint::LateContext; +use rustc_middle::ty; use rustc_span::sym; use super::ITER_CLONED_COLLECT; pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, method_name: &str, expr: &hir::Expr<'_>, recv: &'tcx hir::Expr<'_>) { - if is_type_diagnostic_item(cx, cx.typeck_results().expr_ty(expr), sym::Vec) + let expr_ty = cx.typeck_results().expr_ty(expr); + if is_type_diagnostic_item(cx, expr_ty, sym::Vec) && let Some(slice) = derefs_to_slice(cx, recv, cx.typeck_results().expr_ty(recv)) + && let ty::Adt(_, args) = expr_ty.kind() + && let Some(iter_item_ty) = get_iterator_item_ty(cx, cx.typeck_results().expr_ty(recv)) + && let ty::Ref(_, iter_item_ty, _) = iter_item_ty.kind() + && *iter_item_ty == args.type_at(0) && let Some(to_replace) = expr.span.trim_start(slice.span.source_callsite()) { span_lint_and_sugg( diff --git a/clippy_lints/src/methods/iter_filter.rs b/clippy_lints/src/methods/iter_filter.rs index bafabec7e0695..adeff375c8aad 100644 --- a/clippy_lints/src/methods/iter_filter.rs +++ b/clippy_lints/src/methods/iter_filter.rs @@ -6,12 +6,12 @@ use super::{ITER_FILTER_IS_OK, ITER_FILTER_IS_SOME}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::{indent_of, reindent_multiline}; -use clippy_utils::{get_parent_expr, is_trait_method, peel_blocks, span_contains_comment}; +use clippy_utils::{get_parent_expr, is_trait_method, peel_blocks, span_contains_comment, sym}; use rustc_errors::Applicability; use rustc_hir as hir; use rustc_hir::QPath; use rustc_span::Span; -use rustc_span::symbol::{Ident, Symbol, sym}; +use rustc_span::symbol::{Ident, Symbol}; /// /// Returns true if the expression is a method call to `method_name` @@ -154,7 +154,7 @@ fn expression_type( if let Some(opt_defid) = cx.tcx.get_diagnostic_item(sym::Option) && let opt_ty = cx.tcx.type_of(opt_defid).skip_binder() && iter_item_ty.ty_adt_def() == opt_ty.ty_adt_def() - && is_method(cx, filter_arg, sym::Option, sym!(is_some), &[]) + && is_method(cx, filter_arg, sym::Option, sym::is_some, &[]) { return Some(FilterType::IsSome); } @@ -162,7 +162,7 @@ fn expression_type( if let Some(opt_defid) = cx.tcx.get_diagnostic_item(sym::Result) && let opt_ty = cx.tcx.type_of(opt_defid).skip_binder() && iter_item_ty.ty_adt_def() == opt_ty.ty_adt_def() - && is_method(cx, filter_arg, sym::Result, sym!(is_ok), &[]) + && is_method(cx, filter_arg, sym::Result, sym::is_ok, &[]) { return Some(FilterType::IsOk); } diff --git a/clippy_lints/src/methods/iter_kv_map.rs b/clippy_lints/src/methods/iter_kv_map.rs index 94415fc91061e..3ac9299ba9157 100644 --- a/clippy_lints/src/methods/iter_kv_map.rs +++ b/clippy_lints/src/methods/iter_kv_map.rs @@ -37,7 +37,7 @@ pub(super) fn check<'tcx>( (PatKind::Binding(ann, _, key, _), value) if pat_is_wild(cx, value, m_arg) => ("key", ann, key), _ => return, } - && let ty = cx.typeck_results().expr_ty(recv) + && let ty = cx.typeck_results().expr_ty_adjusted(recv).peel_refs() && (is_type_diagnostic_item(cx, ty, sym::HashMap) || is_type_diagnostic_item(cx, ty, sym::BTreeMap)) { let mut applicability = rustc_errors::Applicability::MachineApplicable; diff --git a/clippy_lints/src/methods/iterator_step_by_zero.rs b/clippy_lints/src/methods/iterator_step_by_zero.rs index 9b358235a40df..90d5d9df55eed 100644 --- a/clippy_lints/src/methods/iterator_step_by_zero.rs +++ b/clippy_lints/src/methods/iterator_step_by_zero.rs @@ -8,14 +8,14 @@ use rustc_span::sym; use super::ITERATOR_STEP_BY_ZERO; pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &hir::Expr<'_>, arg: &'tcx hir::Expr<'_>) { - if is_trait_method(cx, expr, sym::Iterator) { - if let Some(Constant::Int(0)) = ConstEvalCtxt::new(cx).eval(arg) { - span_lint( - cx, - ITERATOR_STEP_BY_ZERO, - expr.span, - "`Iterator::step_by(0)` will panic at runtime", - ); - } + if is_trait_method(cx, expr, sym::Iterator) + && let Some(Constant::Int(0)) = ConstEvalCtxt::new(cx).eval(arg) + { + span_lint( + cx, + ITERATOR_STEP_BY_ZERO, + expr.span, + "`Iterator::step_by(0)` will panic at runtime", + ); } } diff --git a/clippy_lints/src/methods/manual_saturating_arithmetic.rs b/clippy_lints/src/methods/manual_saturating_arithmetic.rs index 13918ed11b87d..18978a1d2bc86 100644 --- a/clippy_lints/src/methods/manual_saturating_arithmetic.rs +++ b/clippy_lints/src/methods/manual_saturating_arithmetic.rs @@ -106,15 +106,15 @@ fn is_min_or_max(cx: &LateContext<'_>, expr: &hir::Expr<'_>) -> Option { }; let check_lit = |expr: &hir::Expr<'_>, check_min: bool| { - if let hir::ExprKind::Lit(lit) = &expr.kind { - if let ast::LitKind::Int(value, _) = lit.node { - if value == maxval { - return Some(MinMax::Max); - } - - if check_min && value == minval { - return Some(MinMax::Min); - } + if let hir::ExprKind::Lit(lit) = &expr.kind + && let ast::LitKind::Int(value, _) = lit.node + { + if value == maxval { + return Some(MinMax::Max); + } + + if check_min && value == minval { + return Some(MinMax::Min); } } @@ -125,10 +125,10 @@ fn is_min_or_max(cx: &LateContext<'_>, expr: &hir::Expr<'_>) -> Option { return r; } - if ty.is_signed() { - if let hir::ExprKind::Unary(hir::UnOp::Neg, val) = &expr.kind { - return check_lit(val, true); - } + if ty.is_signed() + && let hir::ExprKind::Unary(hir::UnOp::Neg, val) = &expr.kind + { + return check_lit(val, true); } None diff --git a/clippy_lints/src/methods/manual_str_repeat.rs b/clippy_lints/src/methods/manual_str_repeat.rs index 098721dc046f8..8167e4f960534 100644 --- a/clippy_lints/src/methods/manual_str_repeat.rs +++ b/clippy_lints/src/methods/manual_str_repeat.rs @@ -77,7 +77,7 @@ pub(super) fn check( s @ Cow::Borrowed(_) => s, }, RepeatKind::String => Sugg::hir_with_context(cx, repeat_arg, ctxt, "..", &mut app) - .maybe_par() + .maybe_paren() .to_string() .into(), }; diff --git a/clippy_lints/src/methods/map_clone.rs b/clippy_lints/src/methods/map_clone.rs index 128b3695f48b7..333a33f7527d6 100644 --- a/clippy_lints/src/methods/map_clone.rs +++ b/clippy_lints/src/methods/map_clone.rs @@ -51,19 +51,19 @@ pub(super) fn check(cx: &LateContext<'_>, e: &hir::Expr<'_>, recv: &hir::Expr<'_ let closure_expr = peel_blocks(closure_body.value); match closure_body.params[0].pat.kind { hir::PatKind::Ref(inner, Mutability::Not) => { - if let hir::PatKind::Binding(hir::BindingMode::NONE, .., name, None) = inner.kind { - if ident_eq(name, closure_expr) { - lint_explicit_closure(cx, e.span, recv.span, true, msrv); - } + if let hir::PatKind::Binding(hir::BindingMode::NONE, .., name, None) = inner.kind + && ident_eq(name, closure_expr) + { + lint_explicit_closure(cx, e.span, recv.span, true, msrv); } }, hir::PatKind::Binding(hir::BindingMode::NONE, .., name, None) => { match closure_expr.kind { hir::ExprKind::Unary(hir::UnOp::Deref, inner) => { - if ident_eq(name, inner) { - if let ty::Ref(.., Mutability::Not) = cx.typeck_results().expr_ty(inner).kind() { - lint_explicit_closure(cx, e.span, recv.span, true, msrv); - } + if ident_eq(name, inner) + && let ty::Ref(.., Mutability::Not) = cx.typeck_results().expr_ty(inner).kind() + { + lint_explicit_closure(cx, e.span, recv.span, true, msrv); } }, hir::ExprKind::MethodCall(method, obj, [], _) => { @@ -114,19 +114,17 @@ fn handle_path( ) { if let Some(path_def_id) = cx.qpath_res(qpath, arg.hir_id).opt_def_id() && cx.tcx.lang_items().get(LangItem::CloneFn) == Some(path_def_id) - { // The `copied` and `cloned` methods are only available on `&T` and `&mut T` in `Option` // and `Result`. - if let ty::Adt(_, args) = cx.typeck_results().expr_ty(recv).kind() - && let args = args.as_slice() - && let Some(ty) = args.iter().find_map(|generic_arg| generic_arg.as_type()) - && let ty::Ref(_, ty, Mutability::Not) = ty.kind() - && let ty::FnDef(_, lst) = cx.typeck_results().expr_ty(arg).kind() - && lst.iter().all(|l| l.as_type() == Some(*ty)) - && !should_call_clone_as_function(cx, *ty) - { - lint_path(cx, e.span, recv.span, is_copy(cx, ty.peel_refs())); - } + && let ty::Adt(_, args) = cx.typeck_results().expr_ty(recv).kind() + && let args = args.as_slice() + && let Some(ty) = args.iter().find_map(|generic_arg| generic_arg.as_type()) + && let ty::Ref(_, ty, Mutability::Not) = ty.kind() + && let ty::FnDef(_, lst) = cx.typeck_results().expr_ty(arg).kind() + && lst.iter().all(|l| l.as_type() == Some(*ty)) + && !should_call_clone_as_function(cx, *ty) + { + lint_path(cx, e.span, recv.span, is_copy(cx, ty.peel_refs())); } } diff --git a/clippy_lints/src/methods/map_with_unused_argument_over_ranges.rs b/clippy_lints/src/methods/map_with_unused_argument_over_ranges.rs index 6cf0936c598fa..a2a522a60687d 100644 --- a/clippy_lints/src/methods/map_with_unused_argument_over_ranges.rs +++ b/clippy_lints/src/methods/map_with_unused_argument_over_ranges.rs @@ -41,7 +41,7 @@ fn extract_count_with_applicability( return Some(format!("{count}")); } let end_snippet = Sugg::hir_with_applicability(cx, end, "...", applicability) - .maybe_par() + .maybe_paren() .into_string(); if lower_bound == 0 { if range.limits == RangeLimits::Closed { diff --git a/clippy_lints/src/methods/mod.rs b/clippy_lints/src/methods/mod.rs index 1d9296016e25f..ad374dee516cd 100644 --- a/clippy_lints/src/methods/mod.rs +++ b/clippy_lints/src/methods/mod.rs @@ -114,6 +114,7 @@ mod suspicious_command_arg_space; mod suspicious_map; mod suspicious_splitn; mod suspicious_to_owned; +mod swap_with_temporary; mod type_id_on_box; mod unbuffered_bytes; mod uninit_assumed_init; @@ -478,9 +479,6 @@ declare_clippy_lint! { /// Because you usually call `expect()` on the `Result` /// directly to get a better error message. /// - /// ### Known problems - /// The error type needs to implement `Debug` - /// /// ### Example /// ```no_run /// # let x = Ok::<_, ()>(()); @@ -2429,7 +2427,7 @@ declare_clippy_lint! { /// /// ### Limitations /// This lint currently only looks for usages of - /// `.then_some(..).unwrap_or(..)` and `.then(..).unwrap_or(..)`, but will be expanded + /// `.{then, then_some}(..).{unwrap_or, unwrap_or_else, unwrap_or_default}(..)`, but will be expanded /// to account for similar patterns. /// /// ### Example @@ -4286,7 +4284,7 @@ declare_clippy_lint! { /// ```no_run /// let last_arg = "echo hello world".split(' ').next_back(); /// ``` - #[clippy::version = "1.85.0"] + #[clippy::version = "1.86.0"] pub DOUBLE_ENDED_ITERATOR_LAST, perf, "using `Iterator::last` on a `DoubleEndedIterator`" @@ -4478,12 +4476,59 @@ declare_clippy_lint! { /// ```no_run /// let _ = std::io::Error::other("bad".to_string()); /// ``` - #[clippy::version = "1.86.0"] + #[clippy::version = "1.87.0"] pub IO_OTHER_ERROR, style, "calling `std::io::Error::new(std::io::ErrorKind::Other, _)`" } +declare_clippy_lint! { + /// ### What it does + /// Checks for usage of `std::mem::swap` with temporary values. + /// + /// ### Why is this bad? + /// Storing a new value in place of a temporary value which will + /// be dropped right after the `swap` is an inefficient way of performing + /// an assignment. The same result can be achieved by using a regular + /// assignment. + /// + /// ### Examples + /// ```no_run + /// fn replace_string(s: &mut String) { + /// std::mem::swap(s, &mut String::from("replaced")); + /// } + /// ``` + /// Use instead: + /// ```no_run + /// fn replace_string(s: &mut String) { + /// *s = String::from("replaced"); + /// } + /// ``` + /// + /// Also, swapping two temporary values has no effect, as they will + /// both be dropped right after swapping them. This is likely an indication + /// of a bug. For example, the following code swaps the references to + /// the last element of the vectors, instead of swapping the elements + /// themselves: + /// + /// ```no_run + /// fn bug(v1: &mut [i32], v2: &mut [i32]) { + /// // Incorrect: swapping temporary references (`&mut &mut` passed to swap) + /// std::mem::swap(&mut v1.last_mut().unwrap(), &mut v2.last_mut().unwrap()); + /// } + /// ``` + /// Use instead: + /// ```no_run + /// fn correct(v1: &mut [i32], v2: &mut [i32]) { + /// std::mem::swap(v1.last_mut().unwrap(), v2.last_mut().unwrap()); + /// } + /// ``` + #[clippy::version = "1.88.0"] + pub SWAP_WITH_TEMPORARY, + complexity, + "detect swap with a temporary value" +} + #[expect(clippy::struct_excessive_bools)] pub struct Methods { avoid_breaking_exported_api: bool, @@ -4661,17 +4706,19 @@ impl_lint_pass!(Methods => [ UNBUFFERED_BYTES, MANUAL_CONTAINS, IO_OTHER_ERROR, + SWAP_WITH_TEMPORARY, ]); /// Extracts a method call name, args, and `Span` of the method name. pub fn method_call<'tcx>( recv: &'tcx Expr<'tcx>, ) -> Option<(&'tcx str, &'tcx Expr<'tcx>, &'tcx [Expr<'tcx>], Span, Span)> { - if let ExprKind::MethodCall(path, receiver, args, call_span) = recv.kind { - if !args.iter().any(|e| e.span.from_expansion()) && !receiver.span.from_expansion() { - let name = path.ident.name.as_str(); - return Some((name, receiver, args, path.ident.span, call_span)); - } + if let ExprKind::MethodCall(path, receiver, args, call_span) = recv.kind + && !args.iter().any(|e| e.span.from_expansion()) + && !receiver.span.from_expansion() + { + let name = path.ident.name.as_str(); + return Some((name, receiver, args, path.ident.span, call_span)); } None } @@ -4691,6 +4738,7 @@ impl<'tcx> LateLintPass<'tcx> for Methods { manual_c_str_literals::check(cx, expr, func, args, self.msrv); useless_nonzero_new_unchecked::check(cx, expr, func, args, self.msrv); io_other_error::check(cx, expr, func, args, self.msrv); + swap_with_temporary::check(cx, expr, func, args); }, ExprKind::MethodCall(method_call, receiver, args, _) => { let method_span = method_call.ident.span; @@ -4992,7 +5040,7 @@ impl Methods { }, ("ends_with", [arg]) => { if let ExprKind::MethodCall(.., span) = expr.kind { - case_sensitive_file_extension_comparisons::check(cx, expr, span, recv, arg); + case_sensitive_file_extension_comparisons::check(cx, expr, span, recv, arg, self.msrv); } path_ends_with_ext::check(cx, recv, arg, expr, self.msrv, &self.allowed_dotfiles); }, @@ -5421,15 +5469,21 @@ impl Methods { option_map_unwrap_or::check(cx, expr, m_recv, m_arg, recv, u_arg, span, self.msrv); }, Some((then_method @ ("then" | "then_some"), t_recv, [t_arg], _, _)) => { - obfuscated_if_else::check(cx, expr, t_recv, t_arg, u_arg, then_method, "unwrap_or"); + obfuscated_if_else::check(cx, expr, t_recv, t_arg, Some(u_arg), then_method, "unwrap_or"); }, _ => {}, } unnecessary_literal_unwrap::check(cx, expr, recv, name, args); }, ("unwrap_or_default", []) => { - if let Some(("map", m_recv, [arg], span, _)) = method_call(recv) { - manual_is_variant_and::check(cx, expr, m_recv, arg, span, self.msrv); + match method_call(recv) { + Some(("map", m_recv, [arg], span, _)) => { + manual_is_variant_and::check(cx, expr, m_recv, arg, span, self.msrv); + }, + Some((then_method @ ("then" | "then_some"), t_recv, [t_arg], _, _)) => { + obfuscated_if_else::check(cx, expr, t_recv, t_arg, None, then_method, "unwrap_or_default"); + }, + _ => {}, } unnecessary_literal_unwrap::check(cx, expr, recv, name, args); }, @@ -5441,7 +5495,15 @@ impl Methods { Some(("map", recv, [map_arg], _, _)) if map_unwrap_or::check(cx, expr, recv, map_arg, u_arg, self.msrv) => {}, Some((then_method @ ("then" | "then_some"), t_recv, [t_arg], _, _)) => { - obfuscated_if_else::check(cx, expr, t_recv, t_arg, u_arg, then_method, "unwrap_or_else"); + obfuscated_if_else::check( + cx, + expr, + t_recv, + t_arg, + Some(u_arg), + then_method, + "unwrap_or_else", + ); }, _ => { unnecessary_lazy_eval::check(cx, expr, recv, u_arg, "unwrap_or"); diff --git a/clippy_lints/src/methods/needless_collect.rs b/clippy_lints/src/methods/needless_collect.rs index e4a29b6560e52..6efaba525e3ed 100644 --- a/clippy_lints/src/methods/needless_collect.rs +++ b/clippy_lints/src/methods/needless_collect.rs @@ -4,7 +4,9 @@ use super::NEEDLESS_COLLECT; use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_hir_and_then}; use clippy_utils::source::{snippet, snippet_with_applicability}; use clippy_utils::sugg::Sugg; -use clippy_utils::ty::{get_type_diagnostic_name, make_normalized_projection, make_projection}; +use clippy_utils::ty::{ + get_type_diagnostic_name, has_non_owning_mutable_access, make_normalized_projection, make_projection, +}; use clippy_utils::{ CaptureKind, can_move_expr_to_closure, fn_def_id, get_enclosing_block, higher, is_trait_method, path_to_local, path_to_local_id, @@ -23,6 +25,7 @@ use rustc_span::{Span, sym}; const NEEDLESS_COLLECT_MSG: &str = "avoid using `collect()` when not needed"; +#[expect(clippy::too_many_lines)] pub(super) fn check<'tcx>( cx: &LateContext<'tcx>, name_span: Span, @@ -30,6 +33,11 @@ pub(super) fn check<'tcx>( iter_expr: &'tcx Expr<'tcx>, call_span: Span, ) { + let iter_ty = cx.typeck_results().expr_ty(iter_expr); + if has_non_owning_mutable_access(cx, iter_ty) { + return; // don't lint if the iterator has side effects + } + match cx.tcx.parent_hir_node(collect_expr.hir_id) { Node::Expr(parent) => { check_collect_into_intoiterator(cx, parent, collect_expr, call_span, iter_expr); @@ -377,20 +385,20 @@ impl<'tcx> Visitor<'tcx> for IterFunctionVisitor<'_, 'tcx> { return; } - if let Some(hir_id) = path_to_local(recv) { - if let Some(index) = self.hir_id_uses_map.remove(&hir_id) { - if self - .illegal_mutable_capture_ids - .intersection(&self.current_mutably_captured_ids) - .next() - .is_none() - { - if let Some(hir_id) = self.current_statement_hir_id { - self.hir_id_uses_map.insert(hir_id, index); - } - } else { - self.uses[index] = None; + if let Some(hir_id) = path_to_local(recv) + && let Some(index) = self.hir_id_uses_map.remove(&hir_id) + { + if self + .illegal_mutable_capture_ids + .intersection(&self.current_mutably_captured_ids) + .next() + .is_none() + { + if let Some(hir_id) = self.current_statement_hir_id { + self.hir_id_uses_map.insert(hir_id, index); } + } else { + self.uses[index] = None; } } } diff --git a/clippy_lints/src/methods/needless_option_take.rs b/clippy_lints/src/methods/needless_option_take.rs index 88b9c69f6f949..cd1b97f3c51b5 100644 --- a/clippy_lints/src/methods/needless_option_take.rs +++ b/clippy_lints/src/methods/needless_option_take.rs @@ -9,26 +9,27 @@ use super::NEEDLESS_OPTION_TAKE; pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, recv: &'tcx Expr<'_>) { // Checks if expression type is equal to sym::Option and if the expr is not a syntactic place - if !recv.is_syntactic_place_expr() && is_expr_option(cx, recv) { - if let Some(function_name) = source_of_temporary_value(recv) { - span_lint_and_then( - cx, - NEEDLESS_OPTION_TAKE, - expr.span, - "called `Option::take()` on a temporary value", - |diag| { - diag.note(format!( - "`{function_name}` creates a temporary value, so calling take() has no effect" - )); - diag.span_suggestion( - expr.span.with_lo(recv.span.hi()), - "remove", - "", - Applicability::MachineApplicable, - ); - }, - ); - } + if !recv.is_syntactic_place_expr() + && is_expr_option(cx, recv) + && let Some(function_name) = source_of_temporary_value(recv) + { + span_lint_and_then( + cx, + NEEDLESS_OPTION_TAKE, + expr.span, + "called `Option::take()` on a temporary value", + |diag| { + diag.note(format!( + "`{function_name}` creates a temporary value, so calling take() has no effect" + )); + diag.span_suggestion( + expr.span.with_lo(recv.span.hi()), + "remove", + "", + Applicability::MachineApplicable, + ); + }, + ); } } @@ -44,10 +45,10 @@ fn is_expr_option(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { fn source_of_temporary_value<'a>(expr: &'a Expr<'_>) -> Option<&'a str> { match expr.peel_borrows().kind { ExprKind::Call(function, _) => { - if let ExprKind::Path(QPath::Resolved(_, func_path)) = function.kind { - if !func_path.segments.is_empty() { - return Some(func_path.segments[0].ident.name.as_str()); - } + if let ExprKind::Path(QPath::Resolved(_, func_path)) = function.kind + && !func_path.segments.is_empty() + { + return Some(func_path.segments[0].ident.name.as_str()); } if let ExprKind::Path(QPath::TypeRelative(_, func_path_segment)) = function.kind { return Some(func_path_segment.ident.name.as_str()); diff --git a/clippy_lints/src/methods/obfuscated_if_else.rs b/clippy_lints/src/methods/obfuscated_if_else.rs index 9a5ffdeaf4e8e..1cc56de48763e 100644 --- a/clippy_lints/src/methods/obfuscated_if_else.rs +++ b/clippy_lints/src/methods/obfuscated_if_else.rs @@ -14,14 +14,17 @@ pub(super) fn check<'tcx>( expr: &'tcx hir::Expr<'_>, then_recv: &'tcx hir::Expr<'_>, then_arg: &'tcx hir::Expr<'_>, - unwrap_arg: &'tcx hir::Expr<'_>, + unwrap_arg: Option<&'tcx hir::Expr<'_>>, then_method_name: &str, unwrap_method_name: &str, ) { let recv_ty = cx.typeck_results().expr_ty(then_recv); if recv_ty.is_bool() { - let mut applicability = if switch_to_eager_eval(cx, then_arg) && switch_to_eager_eval(cx, unwrap_arg) { + let then_eager = switch_to_eager_eval(cx, then_arg); + let unwrap_eager = unwrap_arg.is_none_or(|arg| switch_to_eager_eval(cx, arg)); + + let mut applicability = if then_eager && unwrap_eager { Applicability::MachineApplicable } else { Applicability::MaybeIncorrect @@ -36,16 +39,17 @@ pub(super) fn check<'tcx>( _ => return, }; - // FIXME: Add `unwrap_or_else` symbol + // FIXME: Add `unwrap_or_else` and `unwrap_or_default` symbol let els = match unwrap_method_name { - "unwrap_or" => snippet_with_applicability(cx, unwrap_arg.span, "..", &mut applicability), - "unwrap_or_else" if let ExprKind::Closure(closure) = unwrap_arg.kind => { + "unwrap_or" => snippet_with_applicability(cx, unwrap_arg.unwrap().span, "..", &mut applicability), + "unwrap_or_else" if let ExprKind::Closure(closure) = unwrap_arg.unwrap().kind => { let body = cx.tcx.hir_body(closure.body); snippet_with_applicability(cx, body.value.span, "..", &mut applicability) }, - "unwrap_or_else" if let ExprKind::Path(_) = unwrap_arg.kind => { - snippet_with_applicability(cx, unwrap_arg.span, "_", &mut applicability) + "()" + "unwrap_or_else" if let ExprKind::Path(_) = unwrap_arg.unwrap().kind => { + snippet_with_applicability(cx, unwrap_arg.unwrap().span, "_", &mut applicability) + "()" }, + "unwrap_or_default" => "Default::default()".into(), _ => return, }; diff --git a/clippy_lints/src/methods/or_fun_call.rs b/clippy_lints/src/methods/or_fun_call.rs index 6eeeea5d77c70..b78b082e460ef 100644 --- a/clippy_lints/src/methods/or_fun_call.rs +++ b/clippy_lints/src/methods/or_fun_call.rs @@ -6,13 +6,13 @@ use clippy_utils::source::snippet_with_context; use clippy_utils::ty::{expr_type_is_certain, implements_trait, is_type_diagnostic_item}; use clippy_utils::visitors::for_each_expr; use clippy_utils::{ - contains_return, is_default_equivalent, is_default_equivalent_call, last_path_segment, peel_blocks, + contains_return, is_default_equivalent, is_default_equivalent_call, last_path_segment, peel_blocks, sym, }; use rustc_errors::Applicability; use rustc_lint::LateContext; use rustc_middle::ty; use rustc_span::Span; -use rustc_span::symbol::{self, Symbol, sym}; +use rustc_span::symbol::{self, Symbol}; use {rustc_ast as ast, rustc_hir as hir}; use super::{OR_FUN_CALL, UNWRAP_OR_DEFAULT}; @@ -66,8 +66,8 @@ pub(super) fn check<'tcx>( }; let sugg = match (name, call_expr.is_some()) { - ("unwrap_or", true) | ("unwrap_or_else", false) => sym!(unwrap_or_default), - ("or_insert", true) | ("or_insert_with", false) => sym!(or_default), + ("unwrap_or", true) | ("unwrap_or_else", false) => sym::unwrap_or_default, + ("or_insert", true) | ("or_insert_with", false) => sym::or_default, _ => return false, }; @@ -78,8 +78,7 @@ pub(super) fn check<'tcx>( .iter() .flat_map(|impl_id| cx.tcx.associated_items(impl_id).filter_by_name_unhygienic(sugg)) .find_map(|assoc| { - if assoc.is_method() - && cx.tcx.fn_sig(assoc.def_id).skip_binder().inputs().skip_binder().len() == 1 + if assoc.is_method() && cx.tcx.fn_sig(assoc.def_id).skip_binder().inputs().skip_binder().len() == 1 { Some(assoc.def_id) } else { diff --git a/clippy_lints/src/methods/seek_from_current.rs b/clippy_lints/src/methods/seek_from_current.rs index d318462e58415..8b51268da465e 100644 --- a/clippy_lints/src/methods/seek_from_current.rs +++ b/clippy_lints/src/methods/seek_from_current.rs @@ -3,33 +3,33 @@ use rustc_data_structures::packed::Pu128; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind}; use rustc_lint::LateContext; -use rustc_span::sym; use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::is_enum_variant_ctor; use clippy_utils::source::snippet_with_applicability; use clippy_utils::ty::implements_trait; +use clippy_utils::{is_enum_variant_ctor, sym}; use super::SEEK_FROM_CURRENT; pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, recv: &'tcx Expr<'_>, arg: &'tcx Expr<'_>) { let ty = cx.typeck_results().expr_ty(recv); - if let Some(def_id) = cx.tcx.get_diagnostic_item(sym::IoSeek) { - if implements_trait(cx, ty, def_id, &[]) && arg_is_seek_from_current(cx, arg) { - let mut applicability = Applicability::MachineApplicable; - let snip = snippet_with_applicability(cx, recv.span, "..", &mut applicability); + if let Some(def_id) = cx.tcx.get_diagnostic_item(sym::IoSeek) + && implements_trait(cx, ty, def_id, &[]) + && arg_is_seek_from_current(cx, arg) + { + let mut applicability = Applicability::MachineApplicable; + let snip = snippet_with_applicability(cx, recv.span, "..", &mut applicability); - span_lint_and_sugg( - cx, - SEEK_FROM_CURRENT, - expr.span, - "using `SeekFrom::Current` to start from current position", - "replace with", - format!("{snip}.stream_position()"), - applicability, - ); - } + span_lint_and_sugg( + cx, + SEEK_FROM_CURRENT, + expr.span, + "using `SeekFrom::Current` to start from current position", + "replace with", + format!("{snip}.stream_position()"), + applicability, + ); } } @@ -37,14 +37,12 @@ fn arg_is_seek_from_current<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) if let ExprKind::Call(f, [arg]) = expr.kind && let ExprKind::Path(ref path) = f.kind && let Some(ctor_call_id) = cx.qpath_res(path, f.hir_id).opt_def_id() - && is_enum_variant_ctor(cx, sym::SeekFrom, sym!(Current), ctor_call_id) - { + && is_enum_variant_ctor(cx, sym::SeekFrom, sym::Current, ctor_call_id) // check if argument of `SeekFrom::Current` is `0` - if let ExprKind::Lit(lit) = arg.kind - && let LitKind::Int(Pu128(0), LitIntType::Unsuffixed) = lit.node - { - return true; - } + && let ExprKind::Lit(lit) = arg.kind + && let LitKind::Int(Pu128(0), LitIntType::Unsuffixed) = lit.node + { + return true; } false diff --git a/clippy_lints/src/methods/seek_to_start_instead_of_rewind.rs b/clippy_lints/src/methods/seek_to_start_instead_of_rewind.rs index 7b1dd9e58c50e..b8405a78f23a9 100644 --- a/clippy_lints/src/methods/seek_to_start_instead_of_rewind.rs +++ b/clippy_lints/src/methods/seek_to_start_instead_of_rewind.rs @@ -1,12 +1,12 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::ty::implements_trait; -use clippy_utils::{is_enum_variant_ctor, is_expr_used_or_unified}; +use clippy_utils::{is_enum_variant_ctor, is_expr_used_or_unified, sym}; use rustc_ast::ast::{LitIntType, LitKind}; use rustc_data_structures::packed::Pu128; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind}; use rustc_lint::LateContext; -use rustc_span::{Span, sym}; +use rustc_span::Span; use super::SEEK_TO_START_INSTEAD_OF_REWIND; @@ -29,7 +29,7 @@ pub(super) fn check<'tcx>( && let ExprKind::Call(func, [arg]) = arg.kind && let ExprKind::Path(ref path) = func.kind && let Some(ctor_call_id) = cx.qpath_res(path, func.hir_id).opt_def_id() - && is_enum_variant_ctor(cx, sym::SeekFrom, sym!(Start), ctor_call_id) + && is_enum_variant_ctor(cx, sym::SeekFrom, sym::Start, ctor_call_id) && let ExprKind::Lit(lit) = arg.kind && let LitKind::Int(Pu128(0), LitIntType::Unsuffixed) = lit.node { diff --git a/clippy_lints/src/methods/str_splitn.rs b/clippy_lints/src/methods/str_splitn.rs index 4ccefb7ec9d77..d183457da25a2 100644 --- a/clippy_lints/src/methods/str_splitn.rs +++ b/clippy_lints/src/methods/str_splitn.rs @@ -238,15 +238,14 @@ fn indirect_usage<'tcx>( unwrap_kind: Some(unwrap_kind), .. } = iter_usage + && parent_id == local_hir_id { - if parent_id == local_hir_id { - return Some(IndirectUsage { - name: ident.name, - span: stmt.span, - init_expr, - unwrap_kind, - }); - } + return Some(IndirectUsage { + name: ident.name, + span: stmt.span, + init_expr, + unwrap_kind, + }); } } diff --git a/clippy_lints/src/methods/suspicious_map.rs b/clippy_lints/src/methods/suspicious_map.rs index 1bd48525f12d8..788014d9bb632 100644 --- a/clippy_lints/src/methods/suspicious_map.rs +++ b/clippy_lints/src/methods/suspicious_map.rs @@ -13,11 +13,11 @@ pub fn check(cx: &LateContext<'_>, expr: &hir::Expr<'_>, count_recv: &hir::Expr< && let closure_body = cx.tcx.hir_body(closure.body) && !cx.typeck_results().expr_ty(closure_body.value).is_unit() { - if let Some(map_mutated_vars) = mutated_variables(closure_body.value, cx) { + if let Some(map_mutated_vars) = mutated_variables(closure_body.value, cx) // A variable is used mutably inside of the closure. Suppress the lint. - if !map_mutated_vars.is_empty() { - return; - } + && !map_mutated_vars.is_empty() + { + return; } span_lint_and_help( cx, diff --git a/clippy_lints/src/methods/swap_with_temporary.rs b/clippy_lints/src/methods/swap_with_temporary.rs new file mode 100644 index 0000000000000..de729fb343a34 --- /dev/null +++ b/clippy_lints/src/methods/swap_with_temporary.rs @@ -0,0 +1,125 @@ +use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::sugg::Sugg; +use rustc_ast::BorrowKind; +use rustc_errors::{Applicability, Diag}; +use rustc_hir::{Expr, ExprKind, Node, QPath}; +use rustc_lint::LateContext; +use rustc_span::sym; + +use super::SWAP_WITH_TEMPORARY; + +const MSG_TEMPORARY: &str = "this expression returns a temporary value"; +const MSG_TEMPORARY_REFMUT: &str = "this is a mutable reference to a temporary value"; + +pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, func: &Expr<'_>, args: &[Expr<'_>]) { + if let ExprKind::Path(QPath::Resolved(_, func_path)) = func.kind + && let Some(func_def_id) = func_path.res.opt_def_id() + && cx.tcx.is_diagnostic_item(sym::mem_swap, func_def_id) + { + match (ArgKind::new(&args[0]), ArgKind::new(&args[1])) { + (ArgKind::RefMutToTemp(left_temp), ArgKind::RefMutToTemp(right_temp)) => { + emit_lint_useless(cx, expr, &args[0], &args[1], left_temp, right_temp); + }, + (ArgKind::RefMutToTemp(left_temp), right) => emit_lint_assign(cx, expr, &right, &args[0], left_temp), + (left, ArgKind::RefMutToTemp(right_temp)) => emit_lint_assign(cx, expr, &left, &args[1], right_temp), + _ => {}, + } + } +} + +enum ArgKind<'tcx> { + // Mutable reference to a place, coming from a macro + RefMutToPlaceAsMacro(&'tcx Expr<'tcx>), + // Place behind a mutable reference + RefMutToPlace(&'tcx Expr<'tcx>), + // Temporary value behind a mutable reference + RefMutToTemp(&'tcx Expr<'tcx>), + // Any other case + Expr(&'tcx Expr<'tcx>), +} + +impl<'tcx> ArgKind<'tcx> { + fn new(arg: &'tcx Expr<'tcx>) -> Self { + if let ExprKind::AddrOf(BorrowKind::Ref, _, target) = arg.kind { + if target.is_syntactic_place_expr() { + if arg.span.from_expansion() { + ArgKind::RefMutToPlaceAsMacro(arg) + } else { + ArgKind::RefMutToPlace(target) + } + } else { + ArgKind::RefMutToTemp(target) + } + } else { + ArgKind::Expr(arg) + } + } +} + +// Emits a note either on the temporary expression if it can be found in the same context as the +// base and returns `true`, or on the mutable reference to the temporary expression otherwise and +// returns `false`. +fn emit_note(diag: &mut Diag<'_, ()>, base: &Expr<'_>, expr: &Expr<'_>, expr_temp: &Expr<'_>) -> bool { + if base.span.eq_ctxt(expr.span) { + diag.span_note(expr_temp.span.source_callsite(), MSG_TEMPORARY); + true + } else { + diag.span_note(expr.span.source_callsite(), MSG_TEMPORARY_REFMUT); + false + } +} + +fn emit_lint_useless( + cx: &LateContext<'_>, + expr: &Expr<'_>, + left: &Expr<'_>, + right: &Expr<'_>, + left_temp: &Expr<'_>, + right_temp: &Expr<'_>, +) { + span_lint_and_then( + cx, + SWAP_WITH_TEMPORARY, + expr.span, + "swapping temporary values has no effect", + |diag| { + emit_note(diag, expr, left, left_temp); + emit_note(diag, expr, right, right_temp); + }, + ); +} + +fn emit_lint_assign(cx: &LateContext<'_>, expr: &Expr<'_>, target: &ArgKind<'_>, reftemp: &Expr<'_>, temp: &Expr<'_>) { + span_lint_and_then( + cx, + SWAP_WITH_TEMPORARY, + expr.span, + "swapping with a temporary value is inefficient", + |diag| { + if !emit_note(diag, expr, reftemp, temp) { + return; + } + + // Make the suggestion only when the original `swap()` call is a statement + // or the last expression in a block. + if matches!(cx.tcx.parent_hir_node(expr.hir_id), Node::Stmt(..) | Node::Block(..)) { + let mut applicability = Applicability::MachineApplicable; + let ctxt = expr.span.ctxt(); + let assign_target = match target { + ArgKind::Expr(target) | ArgKind::RefMutToPlaceAsMacro(target) => { + Sugg::hir_with_context(cx, target, ctxt, "_", &mut applicability).deref() + }, + ArgKind::RefMutToPlace(target) => Sugg::hir_with_context(cx, target, ctxt, "_", &mut applicability), + ArgKind::RefMutToTemp(_) => unreachable!(), + }; + let assign_source = Sugg::hir_with_context(cx, temp, ctxt, "_", &mut applicability); + diag.span_suggestion( + expr.span, + "use assignment instead", + format!("{assign_target} = {assign_source}"), + applicability, + ); + } + }, + ); +} diff --git a/clippy_lints/src/methods/unnecessary_filter_map.rs b/clippy_lints/src/methods/unnecessary_filter_map.rs index ca42a9ac04e0b..f920f306bc1ed 100644 --- a/clippy_lints/src/methods/unnecessary_filter_map.rs +++ b/clippy_lints/src/methods/unnecessary_filter_map.rs @@ -1,11 +1,10 @@ use super::utils::clone_or_copy_needed; -use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::diagnostics::span_lint; use clippy_utils::ty::is_copy; use clippy_utils::usage::mutated_variables; use clippy_utils::visitors::{Descend, for_each_expr_without_closures}; use clippy_utils::{is_res_lang_ctor, is_trait_method, path_res, path_to_local_id}; use core::ops::ControlFlow; -use rustc_errors::Applicability; use rustc_hir as hir; use rustc_hir::LangItem::{OptionNone, OptionSome}; use rustc_lint::LateContext; @@ -45,30 +44,32 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'tcx>, a && is_res_lang_ctor(cx, path_res(cx, expr), OptionSome) && let hir::ExprKind::Path(_) = args[0].kind { - span_lint_and_sugg( + span_lint( cx, UNNECESSARY_FILTER_MAP, expr.span, - format!("{name} is unnecessary"), - "try removing the filter_map", - String::new(), - Applicability::MaybeIncorrect, + String::from("this call to `.filter_map(..)` is unnecessary"), ); + return; + } + if name == "filter_map" { + "map(..)" + } else { + "map(..).next()" } - if name == "filter_map" { "map" } else { "map(..).next()" } } else if !found_mapping && !mutates_arg && (!clone_or_copy_needed || is_copy(cx, in_ty)) { match cx.typeck_results().expr_ty(body.value).kind() { ty::Adt(adt, subst) if cx.tcx.is_diagnostic_item(sym::Option, adt.did()) && in_ty == subst.type_at(0) => { - if name == "filter_map" { "filter" } else { "find" } + if name == "filter_map" { "filter(..)" } else { "find(..)" } }, _ => return, } } else { return; }; - span_lint_and_sugg( + span_lint( cx, if name == "filter_map" { UNNECESSARY_FILTER_MAP @@ -76,10 +77,7 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'tcx>, a UNNECESSARY_FIND_MAP }, expr.span, - format!("this `.{name}` can be written more simply"), - "try instead", - sugg.to_string(), - Applicability::MaybeIncorrect, + format!("this `.{name}(..)` can be written more simply using `.{sugg}`"), ); } } diff --git a/clippy_lints/src/methods/unnecessary_lazy_eval.rs b/clippy_lints/src/methods/unnecessary_lazy_eval.rs index 9f4080100da20..71e606add526e 100644 --- a/clippy_lints/src/methods/unnecessary_lazy_eval.rs +++ b/clippy_lints/src/methods/unnecessary_lazy_eval.rs @@ -23,56 +23,61 @@ pub(super) fn check<'tcx>( let is_result = is_type_diagnostic_item(cx, cx.typeck_results().expr_ty(recv), sym::Result); let is_bool = cx.typeck_results().expr_ty(recv).is_bool(); - if is_option || is_result || is_bool { - if let hir::ExprKind::Closure(&hir::Closure { body, fn_decl, .. }) = arg.kind { - let body = cx.tcx.hir_body(body); - let body_expr = &body.value; + if (is_option || is_result || is_bool) + && let hir::ExprKind::Closure(&hir::Closure { + body, + fn_decl, + kind: hir::ClosureKind::Closure, + .. + }) = arg.kind + { + let body = cx.tcx.hir_body(body); + let body_expr = &body.value; - if usage::BindingUsageFinder::are_params_used(cx, body) || is_from_proc_macro(cx, expr) { - return false; - } + if usage::BindingUsageFinder::are_params_used(cx, body) || is_from_proc_macro(cx, expr) { + return false; + } - if eager_or_lazy::switch_to_eager_eval(cx, body_expr) { - let msg = if is_option { - "unnecessary closure used to substitute value for `Option::None`" - } else if is_result { - "unnecessary closure used to substitute value for `Result::Err`" - } else { - "unnecessary closure used with `bool::then`" - }; - let applicability = if body - .params - .iter() - // bindings are checked to be unused above - .all(|param| matches!(param.pat.kind, hir::PatKind::Binding(..) | hir::PatKind::Wild)) - && matches!( - fn_decl.output, - FnRetTy::DefaultReturn(_) - | FnRetTy::Return(hir::Ty { - kind: hir::TyKind::Infer(()), - .. - }) - ) { - Applicability::MachineApplicable - } else { - // replacing the lambda may break type inference - Applicability::MaybeIncorrect - }; + if eager_or_lazy::switch_to_eager_eval(cx, body_expr) { + let msg = if is_option { + "unnecessary closure used to substitute value for `Option::None`" + } else if is_result { + "unnecessary closure used to substitute value for `Result::Err`" + } else { + "unnecessary closure used with `bool::then`" + }; + let applicability = if body + .params + .iter() + // bindings are checked to be unused above + .all(|param| matches!(param.pat.kind, hir::PatKind::Binding(..) | hir::PatKind::Wild)) + && matches!( + fn_decl.output, + FnRetTy::DefaultReturn(_) + | FnRetTy::Return(hir::Ty { + kind: hir::TyKind::Infer(()), + .. + }) + ) { + Applicability::MachineApplicable + } else { + // replacing the lambda may break type inference + Applicability::MaybeIncorrect + }; - // This is a duplicate of what's happening in clippy_lints::methods::method_call, - // which isn't ideal, We want to get the method call span, - // but prefer to avoid changing the signature of the function itself. - if let hir::ExprKind::MethodCall(.., span) = expr.kind { - span_lint_and_then(cx, UNNECESSARY_LAZY_EVALUATIONS, expr.span, msg, |diag| { - diag.span_suggestion_verbose( - span, - format!("use `{simplify_using}` instead"), - format!("{simplify_using}({})", snippet(cx, body_expr.span, "..")), - applicability, - ); - }); - return true; - } + // This is a duplicate of what's happening in clippy_lints::methods::method_call, + // which isn't ideal, We want to get the method call span, + // but prefer to avoid changing the signature of the function itself. + if let hir::ExprKind::MethodCall(.., span) = expr.kind { + span_lint_and_then(cx, UNNECESSARY_LAZY_EVALUATIONS, expr.span, msg, |diag| { + diag.span_suggestion_verbose( + span, + format!("use `{simplify_using}` instead"), + format!("{simplify_using}({})", snippet(cx, body_expr.span, "..")), + applicability, + ); + }); + return true; } } } diff --git a/clippy_lints/src/methods/unnecessary_map_or.rs b/clippy_lints/src/methods/unnecessary_map_or.rs index d7bd522ddab94..b90748dd1585f 100644 --- a/clippy_lints/src/methods/unnecessary_map_or.rs +++ b/clippy_lints/src/methods/unnecessary_map_or.rs @@ -76,7 +76,7 @@ pub(super) fn check<'a>( && ((BinOpKind::Eq == op.node && !def_bool) || (BinOpKind::Ne == op.node && def_bool)) && let non_binding_location = if path_to_local_id(l, hir_id) { r } else { l } && switch_to_eager_eval(cx, non_binding_location) - // xor, because if its both then thats a strange edge case and + // xor, because if its both then that's a strange edge case and // we can just ignore it, since by default clippy will error on this && (path_to_local_id(l, hir_id) ^ path_to_local_id(r, hir_id)) && !is_local_used(cx, non_binding_location, hir_id) @@ -92,7 +92,7 @@ pub(super) fn check<'a>( // we may need to add parens around the suggestion // in case the parent expression has additional method calls, // since for example `Some(5).map_or(false, |x| x == 5).then(|| 1)` - // being converted to `Some(5) == Some(5).then(|| 1)` isnt + // being converted to `Some(5) == Some(5).then(|| 1)` isn't // the same thing let inner_non_binding = Sugg::NonParen(Cow::Owned(format!( @@ -109,8 +109,8 @@ pub(super) fn check<'a>( let sugg = if let Some(parent_expr) = get_parent_expr(cx, expr) { match parent_expr.kind { - ExprKind::Binary(..) | ExprKind::Unary(..) | ExprKind::Cast(..) => binop.maybe_par(), - ExprKind::MethodCall(_, receiver, _, _) if receiver.hir_id == expr.hir_id => binop.maybe_par(), + ExprKind::Binary(..) | ExprKind::Unary(..) | ExprKind::Cast(..) => binop.maybe_paren(), + ExprKind::MethodCall(_, receiver, _, _) if receiver.hir_id == expr.hir_id => binop.maybe_paren(), _ => binop, } } else { diff --git a/clippy_lints/src/methods/utils.rs b/clippy_lints/src/methods/utils.rs index 3611b341897a6..b0cc7a785bc31 100644 --- a/clippy_lints/src/methods/utils.rs +++ b/clippy_lints/src/methods/utils.rs @@ -8,6 +8,9 @@ use rustc_middle::ty::{self, Ty}; use rustc_span::Span; use rustc_span::symbol::sym; +/// Checks if `expr`, of type `ty`, corresponds to a slice or can be dereferenced to a slice, or if +/// `expr` is a method call to `.iter()` on such a type. In these cases, return the slice-like +/// expression. pub(super) fn derefs_to_slice<'tcx>( cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>, diff --git a/clippy_lints/src/misc_early/builtin_type_shadow.rs b/clippy_lints/src/misc_early/builtin_type_shadow.rs index 662f7cd8500cf..9ee1e2f3fd17a 100644 --- a/clippy_lints/src/misc_early/builtin_type_shadow.rs +++ b/clippy_lints/src/misc_early/builtin_type_shadow.rs @@ -6,14 +6,14 @@ use rustc_lint::EarlyContext; use super::BUILTIN_TYPE_SHADOW; pub(super) fn check(cx: &EarlyContext<'_>, param: &GenericParam) { - if let GenericParamKind::Type { .. } = param.kind { - if let Some(prim_ty) = PrimTy::from_name(param.ident.name) { - span_lint( - cx, - BUILTIN_TYPE_SHADOW, - param.ident.span, - format!("this generic shadows the built-in type `{}`", prim_ty.name()), - ); - } + if let GenericParamKind::Type { .. } = param.kind + && let Some(prim_ty) = PrimTy::from_name(param.ident.name) + { + span_lint( + cx, + BUILTIN_TYPE_SHADOW, + param.ident.span, + format!("this generic shadows the built-in type `{}`", prim_ty.name()), + ); } } diff --git a/clippy_lints/src/misc_early/redundant_pattern.rs b/clippy_lints/src/misc_early/redundant_pattern.rs index d5b5b2bf2dd1b..3cb51671aaf18 100644 --- a/clippy_lints/src/misc_early/redundant_pattern.rs +++ b/clippy_lints/src/misc_early/redundant_pattern.rs @@ -6,20 +6,20 @@ use rustc_lint::EarlyContext; use super::REDUNDANT_PATTERN; pub(super) fn check(cx: &EarlyContext<'_>, pat: &Pat) { - if let PatKind::Ident(ann, ident, Some(ref right)) = pat.kind { - if let PatKind::Wild = right.kind { - span_lint_and_sugg( - cx, - REDUNDANT_PATTERN, - pat.span, - format!( - "the `{} @ _` pattern can be written as just `{}`", - ident.name, ident.name, - ), - "try", - format!("{}{}", ann.prefix_str(), ident.name), - Applicability::MachineApplicable, - ); - } + if let PatKind::Ident(ann, ident, Some(ref right)) = pat.kind + && let PatKind::Wild = right.kind + { + span_lint_and_sugg( + cx, + REDUNDANT_PATTERN, + pat.span, + format!( + "the `{} @ _` pattern can be written as just `{}`", + ident.name, ident.name, + ), + "try", + format!("{}{}", ann.prefix_str(), ident.name), + Applicability::MachineApplicable, + ); } } diff --git a/clippy_lints/src/misc_early/unneeded_wildcard_pattern.rs b/clippy_lints/src/misc_early/unneeded_wildcard_pattern.rs index 00f46629f102c..fffaf40c9d141 100644 --- a/clippy_lints/src/misc_early/unneeded_wildcard_pattern.rs +++ b/clippy_lints/src/misc_early/unneeded_wildcard_pattern.rs @@ -7,30 +7,30 @@ use rustc_span::Span; use super::UNNEEDED_WILDCARD_PATTERN; pub(super) fn check(cx: &EarlyContext<'_>, pat: &Pat) { - if let PatKind::TupleStruct(_, _, ref patterns) | PatKind::Tuple(ref patterns) = pat.kind { - if let Some(rest_index) = patterns.iter().position(|pat| pat.is_rest()) { - if let Some((left_index, left_pat)) = patterns[..rest_index] - .iter() - .rev() - .take_while(|pat| matches!(pat.kind, PatKind::Wild)) - .enumerate() - .last() - { - span_lint(cx, left_pat.span.until(patterns[rest_index].span), left_index == 0); - } + if let PatKind::TupleStruct(_, _, ref patterns) | PatKind::Tuple(ref patterns) = pat.kind + && let Some(rest_index) = patterns.iter().position(|pat| pat.is_rest()) + { + if let Some((left_index, left_pat)) = patterns[..rest_index] + .iter() + .rev() + .take_while(|pat| matches!(pat.kind, PatKind::Wild)) + .enumerate() + .last() + { + span_lint(cx, left_pat.span.until(patterns[rest_index].span), left_index == 0); + } - if let Some((right_index, right_pat)) = patterns[rest_index + 1..] - .iter() - .take_while(|pat| matches!(pat.kind, PatKind::Wild)) - .enumerate() - .last() - { - span_lint( - cx, - patterns[rest_index].span.shrink_to_hi().to(right_pat.span), - right_index == 0, - ); - } + if let Some((right_index, right_pat)) = patterns[rest_index + 1..] + .iter() + .take_while(|pat| matches!(pat.kind, PatKind::Wild)) + .enumerate() + .last() + { + span_lint( + cx, + patterns[rest_index].span.shrink_to_hi().to(right_pat.span), + right_index == 0, + ); } } } diff --git a/clippy_lints/src/mismatching_type_param_order.rs b/clippy_lints/src/mismatching_type_param_order.rs index d52fe7e7d5b9c..394bc4aef1cc7 100644 --- a/clippy_lints/src/mismatching_type_param_order.rs +++ b/clippy_lints/src/mismatching_type_param_order.rs @@ -111,10 +111,10 @@ impl<'tcx> LateLintPass<'tcx> for TypeParamMismatch { // Checks if impl_param_name is the same as one of type_param_names, // and is in a different position fn mismatch_param_name(i: usize, impl_param_name: &String, type_param_names: &FxHashMap<&String, usize>) -> bool { - if let Some(j) = type_param_names.get(impl_param_name) { - if i != *j { - return true; - } + if let Some(j) = type_param_names.get(impl_param_name) + && i != *j + { + return true; } false } diff --git a/clippy_lints/src/missing_asserts_for_indexing.rs b/clippy_lints/src/missing_asserts_for_indexing.rs index cdd6f4e5b033a..c8e3462b24ef4 100644 --- a/clippy_lints/src/missing_asserts_for_indexing.rs +++ b/clippy_lints/src/missing_asserts_for_indexing.rs @@ -3,14 +3,15 @@ use std::ops::ControlFlow; use clippy_utils::comparisons::{Rel, normalize_comparison}; use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::macros::{find_assert_eq_args, first_node_macro_backtrace}; use clippy_utils::source::snippet; use clippy_utils::visitors::for_each_expr_without_closures; use clippy_utils::{eq_expr_value, hash_expr, higher}; -use rustc_ast::{LitKind, RangeLimits}; +use rustc_ast::{BinOpKind, LitKind, RangeLimits}; use rustc_data_structures::packed::Pu128; use rustc_data_structures::unhash::UnindexMap; use rustc_errors::{Applicability, Diag}; -use rustc_hir::{BinOpKind, Block, Body, Expr, ExprKind, UnOp}; +use rustc_hir::{Block, Body, Expr, ExprKind, UnOp}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; use rustc_span::source_map::Spanned; @@ -134,18 +135,30 @@ fn assert_len_expr<'hir>( cx: &LateContext<'_>, expr: &'hir Expr<'hir>, ) -> Option<(LengthComparison, usize, &'hir Expr<'hir>)> { - if let Some(higher::If { cond, then, .. }) = higher::If::hir(expr) + let (cmp, asserted_len, slice_len) = if let Some(higher::If { cond, then, .. }) = higher::If::hir(expr) && let ExprKind::Unary(UnOp::Not, condition) = &cond.kind && let ExprKind::Binary(bin_op, left, right) = &condition.kind - - && let Some((cmp, asserted_len, slice_len)) = len_comparison(bin_op.node, left, right) - && let ExprKind::MethodCall(method, recv, [], _) = &slice_len.kind - && cx.typeck_results().expr_ty_adjusted(recv).peel_refs().is_slice() - && method.ident.name == sym::len - // check if `then` block has a never type expression && let ExprKind::Block(Block { expr: Some(then_expr), .. }, _) = then.kind && cx.typeck_results().expr_ty(then_expr).is_never() + { + len_comparison(bin_op.node, left, right)? + } else if let Some((macro_call, bin_op)) = first_node_macro_backtrace(cx, expr).find_map(|macro_call| { + match cx.tcx.get_diagnostic_name(macro_call.def_id) { + Some(sym::assert_eq_macro) => Some((macro_call, BinOpKind::Eq)), + Some(sym::assert_ne_macro) => Some((macro_call, BinOpKind::Ne)), + _ => None, + } + }) && let Some((left, right, _)) = find_assert_eq_args(cx, expr, macro_call.expn) + { + len_comparison(bin_op, left, right)? + } else { + return None; + }; + + if let ExprKind::MethodCall(method, recv, [], _) = &slice_len.kind + && cx.typeck_results().expr_ty_adjusted(recv).peel_refs().is_slice() + && method.ident.name == sym::len { Some((cmp, asserted_len, recv)) } else { @@ -168,6 +181,7 @@ enum IndexEntry<'hir> { /// if the `assert!` asserts the right length. AssertWithIndex { highest_index: usize, + is_first_highest: bool, asserted_len: usize, assert_span: Span, slice: &'hir Expr<'hir>, @@ -177,6 +191,7 @@ enum IndexEntry<'hir> { /// Indexing without an `assert!` IndexWithoutAssert { highest_index: usize, + is_first_highest: bool, indexes: Vec, slice: &'hir Expr<'hir>, }, @@ -244,28 +259,41 @@ fn check_index<'hir>(cx: &LateContext<'_>, expr: &'hir Expr<'hir>, map: &mut Uni assert_span, slice, } => { - *entry = IndexEntry::AssertWithIndex { - highest_index: index, - asserted_len: *asserted_len, - assert_span: *assert_span, - slice, - indexes: vec![expr.span], - comparison: *comparison, - }; + if slice.span.lo() > assert_span.lo() { + *entry = IndexEntry::AssertWithIndex { + highest_index: index, + is_first_highest: true, + asserted_len: *asserted_len, + assert_span: *assert_span, + slice, + indexes: vec![expr.span], + comparison: *comparison, + }; + } }, IndexEntry::IndexWithoutAssert { - highest_index, indexes, .. + highest_index, + indexes, + is_first_highest, + .. } | IndexEntry::AssertWithIndex { - highest_index, indexes, .. + highest_index, + indexes, + is_first_highest, + .. } => { indexes.push(expr.span); + if *is_first_highest { + (*is_first_highest) = *highest_index >= index; + } *highest_index = (*highest_index).max(index); }, } } else { indexes.push(IndexEntry::IndexWithoutAssert { highest_index: index, + is_first_highest: true, indexes: vec![expr.span], slice, }); @@ -284,15 +312,18 @@ fn check_assert<'hir>(cx: &LateContext<'_>, expr: &'hir Expr<'hir>, map: &mut Un if let Some(entry) = entry { if let IndexEntry::IndexWithoutAssert { highest_index, + is_first_highest, indexes, slice, } = entry + && expr.span.lo() <= slice.span.lo() { *entry = IndexEntry::AssertWithIndex { highest_index: *highest_index, indexes: mem::take(indexes), + is_first_highest: *is_first_highest, slice, - assert_span: expr.span, + assert_span: expr.span.source_callsite(), comparison, asserted_len, }; @@ -301,7 +332,7 @@ fn check_assert<'hir>(cx: &LateContext<'_>, expr: &'hir Expr<'hir>, map: &mut Un indexes.push(IndexEntry::StrayAssert { asserted_len, comparison, - assert_span: expr.span, + assert_span: expr.span.source_callsite(), slice, }); } @@ -325,12 +356,13 @@ fn report_indexes(cx: &LateContext<'_>, map: &UnindexMap match *entry { IndexEntry::AssertWithIndex { highest_index, + is_first_highest, asserted_len, ref indexes, comparison, assert_span, slice, - } if indexes.len() > 1 => { + } if indexes.len() > 1 && !is_first_highest => { // if we have found an `assert!`, let's also check that it's actually right // and if it covers the highest index and if not, suggest the correct length let sugg = match comparison { @@ -378,8 +410,9 @@ fn report_indexes(cx: &LateContext<'_>, map: &UnindexMap IndexEntry::IndexWithoutAssert { ref indexes, highest_index, + is_first_highest, slice, - } if indexes.len() > 1 => { + } if indexes.len() > 1 && !is_first_highest => { // if there was no `assert!` but more than one index, suggest // adding an `assert!` that covers the highest index report_lint( diff --git a/clippy_lints/src/missing_const_for_fn.rs b/clippy_lints/src/missing_const_for_fn.rs index 38a19dd2999bb..67537a251da7f 100644 --- a/clippy_lints/src/missing_const_for_fn.rs +++ b/clippy_lints/src/missing_const_for_fn.rs @@ -139,12 +139,11 @@ impl<'tcx> LateLintPass<'tcx> for MissingConstForFn { // Const fns are not allowed as methods in a trait. { let parent = cx.tcx.hir_get_parent_item(hir_id).def_id; - if parent != CRATE_DEF_ID { - if let hir::Node::Item(item) = cx.tcx.hir_node_by_def_id(parent) { - if let hir::ItemKind::Trait(..) = &item.kind { - return; - } - } + if parent != CRATE_DEF_ID + && let hir::Node::Item(item) = cx.tcx.hir_node_by_def_id(parent) + && let hir::ItemKind::Trait(..) = &item.kind + { + return; } } @@ -156,9 +155,9 @@ impl<'tcx> LateLintPass<'tcx> for MissingConstForFn { return; } - let mir = cx.tcx.optimized_mir(def_id); + let mir = cx.tcx.mir_drops_elaborated_and_const_checked(def_id); - if let Ok(()) = is_min_const_fn(cx, mir, self.msrv) + if let Ok(()) = is_min_const_fn(cx, &mir.borrow(), self.msrv) && let hir::Node::Item(hir::Item { vis_span, .. }) | hir::Node::ImplItem(hir::ImplItem { vis_span, .. }) = cx.tcx.hir_node_by_def_id(def_id) { diff --git a/clippy_lints/src/missing_fields_in_debug.rs b/clippy_lints/src/missing_fields_in_debug.rs index 28dc242742842..1932d2d5f9785 100644 --- a/clippy_lints/src/missing_fields_in_debug.rs +++ b/clippy_lints/src/missing_fields_in_debug.rs @@ -209,7 +209,7 @@ impl<'tcx> LateLintPass<'tcx> for MissingFieldsInDebug { && let Res::Def(DefKind::Struct | DefKind::Enum | DefKind::Union, self_path_did) = self_path.res && cx.tcx.is_diagnostic_item(sym::Debug, trait_def_id) // don't trigger if this impl was derived - && !cx.tcx.has_attr(item.owner_id, sym::automatically_derived) + && !cx.tcx.is_automatically_derived(item.owner_id.to_def_id()) && !item.span.from_expansion() // find `Debug::fmt` function && let Some(fmt_item) = items.iter().find(|i| i.ident.name == sym::fmt) @@ -224,11 +224,10 @@ impl<'tcx> LateLintPass<'tcx> for MissingFieldsInDebug { // NB: can't call cx.typeck_results() as we are not in a body && let typeck_results = cx.tcx.typeck_body(*body_id) && should_lint(cx, typeck_results, block) - { // we intentionally only lint structs, see lint description - if let ItemKind::Struct(_, data, _) = &self_item.kind { - check_struct(cx, typeck_results, block, self_ty, item, data); - } + && let ItemKind::Struct(_, data, _) = &self_item.kind + { + check_struct(cx, typeck_results, block, self_ty, item, data); } } } diff --git a/clippy_lints/src/missing_inline.rs b/clippy_lints/src/missing_inline.rs index f49e03ea76528..1f613171b46e8 100644 --- a/clippy_lints/src/missing_inline.rs +++ b/clippy_lints/src/missing_inline.rs @@ -160,12 +160,13 @@ impl<'tcx> LateLintPass<'tcx> for MissingInline { AssocItemContainer::Impl => cx.tcx.impl_trait_ref(container_id).map(|t| t.skip_binder().def_id), }; - if let Some(trait_def_id) = trait_def_id { - if trait_def_id.is_local() && !cx.effective_visibilities.is_exported(impl_item.owner_id.def_id) { - // If a trait is being implemented for an item, and the - // trait is not exported, we don't need #[inline] - return; - } + if let Some(trait_def_id) = trait_def_id + && trait_def_id.is_local() + && !cx.effective_visibilities.is_exported(impl_item.owner_id.def_id) + { + // If a trait is being implemented for an item, and the + // trait is not exported, we don't need #[inline] + return; } let attrs = cx.tcx.hir_attrs(impl_item.hir_id()); diff --git a/clippy_lints/src/mixed_read_write_in_expression.rs b/clippy_lints/src/mixed_read_write_in_expression.rs index fbd287f528544..0e08558596283 100644 --- a/clippy_lints/src/mixed_read_write_in_expression.rs +++ b/clippy_lints/src/mixed_read_write_in_expression.rs @@ -135,10 +135,10 @@ impl<'tcx> DivergenceVisitor<'_, 'tcx> { } fn report_diverging_sub_expr(&mut self, e: &Expr<'_>) { - if let Some(macro_call) = root_macro_call_first_node(self.cx, e) { - if self.cx.tcx.item_name(macro_call.def_id).as_str() == "todo" { - return; - } + if let Some(macro_call) = root_macro_call_first_node(self.cx, e) + && self.cx.tcx.item_name(macro_call.def_id).as_str() == "todo" + { + return; } span_lint(self.cx, DIVERGING_SUB_EXPRESSION, e.span, "sub-expression diverges"); } @@ -328,22 +328,22 @@ impl<'tcx> Visitor<'tcx> for ReadVisitor<'_, 'tcx> { return; } - if path_to_local_id(expr, self.var) { + if path_to_local_id(expr, self.var) // Check that this is a read, not a write. - if !is_in_assignment_position(self.cx, expr) { - span_lint_and_then( - self.cx, - MIXED_READ_WRITE_IN_EXPRESSION, - expr.span, - format!("unsequenced read of `{}`", self.cx.tcx.hir_name(self.var)), - |diag| { - diag.span_note( - self.write_expr.span, - "whether read occurs before this write depends on evaluation order", - ); - }, - ); - } + && !is_in_assignment_position(self.cx, expr) + { + span_lint_and_then( + self.cx, + MIXED_READ_WRITE_IN_EXPRESSION, + expr.span, + format!("unsequenced read of `{}`", self.cx.tcx.hir_name(self.var)), + |diag| { + diag.span_note( + self.write_expr.span, + "whether read occurs before this write depends on evaluation order", + ); + }, + ); } match expr.kind { // We're about to descend a closure. Since we don't know when (or @@ -373,10 +373,10 @@ impl<'tcx> Visitor<'tcx> for ReadVisitor<'_, 'tcx> { /// Returns `true` if `expr` is the LHS of an assignment, like `expr = ...`. fn is_in_assignment_position(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { - if let Some(parent) = get_parent_expr(cx, expr) { - if let ExprKind::Assign(lhs, ..) = parent.kind { - return lhs.hir_id == expr.hir_id; - } + if let Some(parent) = get_parent_expr(cx, expr) + && let ExprKind::Assign(lhs, ..) = parent.kind + { + return lhs.hir_id == expr.hir_id; } false } diff --git a/clippy_lints/src/module_style.rs b/clippy_lints/src/module_style.rs index 7287193326f7a..98614baffcea6 100644 --- a/clippy_lints/src/module_style.rs +++ b/clippy_lints/src/module_style.rs @@ -119,22 +119,22 @@ impl EarlyLintPass for ModStyle { } for folder in &folder_segments { - if !mod_folders.contains(folder) { - if let Some((file, path)) = file_map.get(folder) { - span_lint_and_then( - cx, - SELF_NAMED_MODULE_FILES, - Span::new(file.start_pos, file.start_pos, SyntaxContext::root(), None), - format!("`mod.rs` files are required, found `{}`", path.display()), - |diag| { - let mut correct = path.to_path_buf(); - correct.pop(); - correct.push(folder); - correct.push("mod.rs"); - diag.help(format!("move `{}` to `{}`", path.display(), correct.display(),)); - }, - ); - } + if !mod_folders.contains(folder) + && let Some((file, path)) = file_map.get(folder) + { + span_lint_and_then( + cx, + SELF_NAMED_MODULE_FILES, + Span::new(file.start_pos, file.start_pos, SyntaxContext::root(), None), + format!("`mod.rs` files are required, found `{}`", path.display()), + |diag| { + let mut correct = path.to_path_buf(); + correct.pop(); + correct.push(folder); + correct.push("mod.rs"); + diag.help(format!("move `{}` to `{}`", path.display(), correct.display(),)); + }, + ); } } } diff --git a/clippy_lints/src/multiple_unsafe_ops_per_block.rs b/clippy_lints/src/multiple_unsafe_ops_per_block.rs index 2adc27c0b709a..c6c27e22b90e5 100644 --- a/clippy_lints/src/multiple_unsafe_ops_per_block.rs +++ b/clippy_lints/src/multiple_unsafe_ops_per_block.rs @@ -142,10 +142,9 @@ fn collect_unsafe_exprs<'tcx>( .typeck_results() .type_dependent_def_id(expr.hir_id) .map(|def_id| cx.tcx.fn_sig(def_id)) + && sig.skip_binder().safety().is_unsafe() { - if sig.skip_binder().safety().is_unsafe() { - unsafe_ops.push(("unsafe method call occurs here", expr.span)); - } + unsafe_ops.push(("unsafe method call occurs here", expr.span)); } }, diff --git a/clippy_lints/src/mut_key.rs b/clippy_lints/src/mut_key.rs index 7abc5870d00e0..a45031ce22b91 100644 --- a/clippy_lints/src/mut_key.rs +++ b/clippy_lints/src/mut_key.rs @@ -82,10 +82,10 @@ impl<'tcx> LateLintPass<'tcx> for MutableKeyType<'tcx> { } fn check_impl_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx hir::ImplItem<'tcx>) { - if let hir::ImplItemKind::Fn(ref sig, ..) = item.kind { - if trait_ref_of_method(cx, item.owner_id.def_id).is_none() { - self.check_sig(cx, item.owner_id.def_id, sig.decl); - } + if let hir::ImplItemKind::Fn(ref sig, ..) = item.kind + && trait_ref_of_method(cx, item.owner_id.def_id).is_none() + { + self.check_sig(cx, item.owner_id.def_id, sig.decl); } } diff --git a/clippy_lints/src/mut_mut.rs b/clippy_lints/src/mut_mut.rs index 3c4ba5141dd9b..d98c70e7f5a85 100644 --- a/clippy_lints/src/mut_mut.rs +++ b/clippy_lints/src/mut_mut.rs @@ -77,16 +77,16 @@ impl<'tcx> intravisit::Visitor<'tcx> for MutVisitor<'_, 'tcx> { expr.span, "generally you want to avoid `&mut &mut _` if possible", ); - } else if let ty::Ref(_, ty, hir::Mutability::Mut) = self.cx.typeck_results().expr_ty(e).kind() { - if ty.peel_refs().is_sized(self.cx.tcx, self.cx.typing_env()) { - span_lint_hir( - self.cx, - MUT_MUT, - expr.hir_id, - expr.span, - "this expression mutably borrows a mutable reference. Consider reborrowing", - ); - } + } else if let ty::Ref(_, ty, hir::Mutability::Mut) = self.cx.typeck_results().expr_ty(e).kind() + && ty.peel_refs().is_sized(self.cx.tcx, self.cx.typing_env()) + { + span_lint_hir( + self.cx, + MUT_MUT, + expr.hir_id, + expr.span, + "this expression mutably borrows a mutable reference. Consider reborrowing", + ); } } } diff --git a/clippy_lints/src/mutable_debug_assertion.rs b/clippy_lints/src/mutable_debug_assertion.rs index 13a23a13b9c24..270eebe075804 100644 --- a/clippy_lints/src/mutable_debug_assertion.rs +++ b/clippy_lints/src/mutable_debug_assertion.rs @@ -101,14 +101,13 @@ impl<'tcx> Visitor<'tcx> for MutArgVisitor<'_, 'tcx> { return; }, ExprKind::Path(_) => { - if let Some(adj) = self.cx.typeck_results().adjustments().get(expr.hir_id) { - if adj + if let Some(adj) = self.cx.typeck_results().adjustments().get(expr.hir_id) + && adj .iter() .any(|a| matches!(a.target.kind(), ty::Ref(_, _, Mutability::Mut))) - { - self.found = true; - return; - } + { + self.found = true; + return; } }, // Don't check await desugars diff --git a/clippy_lints/src/mutex_atomic.rs b/clippy_lints/src/mutex_atomic.rs index 49fd29d1dd6dc..fe2157ca533a6 100644 --- a/clippy_lints/src/mutex_atomic.rs +++ b/clippy_lints/src/mutex_atomic.rs @@ -91,19 +91,19 @@ declare_lint_pass!(Mutex => [MUTEX_ATOMIC, MUTEX_INTEGER]); impl<'tcx> LateLintPass<'tcx> for Mutex { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { let ty = cx.typeck_results().expr_ty(expr); - if let ty::Adt(_, subst) = ty.kind() { - if is_type_diagnostic_item(cx, ty, sym::Mutex) { - let mutex_param = subst.type_at(0); - if let Some(atomic_name) = get_atomic_name(mutex_param) { - let msg = format!( - "consider using an `{atomic_name}` instead of a `Mutex` here; if you just want the locking \ + if let ty::Adt(_, subst) = ty.kind() + && is_type_diagnostic_item(cx, ty, sym::Mutex) + { + let mutex_param = subst.type_at(0); + if let Some(atomic_name) = get_atomic_name(mutex_param) { + let msg = format!( + "consider using an `{atomic_name}` instead of a `Mutex` here; if you just want the locking \ behavior and not the internal type, consider using `Mutex<()>`" - ); - match *mutex_param.kind() { - ty::Uint(t) if t != UintTy::Usize => span_lint(cx, MUTEX_INTEGER, expr.span, msg), - ty::Int(t) if t != IntTy::Isize => span_lint(cx, MUTEX_INTEGER, expr.span, msg), - _ => span_lint(cx, MUTEX_ATOMIC, expr.span, msg), - } + ); + match *mutex_param.kind() { + ty::Uint(t) if t != UintTy::Usize => span_lint(cx, MUTEX_INTEGER, expr.span, msg), + ty::Int(t) if t != IntTy::Isize => span_lint(cx, MUTEX_INTEGER, expr.span, msg), + _ => span_lint(cx, MUTEX_ATOMIC, expr.span, msg), } } } diff --git a/clippy_lints/src/needless_bool.rs b/clippy_lints/src/needless_bool.rs index 2eacd6875d6b4..f768e11a4a2bb 100644 --- a/clippy_lints/src/needless_bool.rs +++ b/clippy_lints/src/needless_bool.rs @@ -154,7 +154,7 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessBool { || is_receiver_of_method_call(cx, e) || is_as_argument(cx, e) { - snip = snip.maybe_par(); + snip = snip.maybe_paren(); } span_lint_and_sugg( @@ -426,10 +426,10 @@ fn fetch_bool_block(expr: &Expr<'_>) -> Option { } fn fetch_bool_expr(expr: &Expr<'_>) -> Option { - if let ExprKind::Lit(lit_ptr) = peel_blocks(expr).kind { - if let LitKind::Bool(value) = lit_ptr.node { - return Some(value); - } + if let ExprKind::Lit(lit_ptr) = peel_blocks(expr).kind + && let LitKind::Bool(value) = lit_ptr.node + { + return Some(value); } None } diff --git a/clippy_lints/src/needless_pass_by_ref_mut.rs b/clippy_lints/src/needless_pass_by_ref_mut.rs index b61061d076b74..7052e1d0fbe5d 100644 --- a/clippy_lints/src/needless_pass_by_ref_mut.rs +++ b/clippy_lints/src/needless_pass_by_ref_mut.rs @@ -86,11 +86,11 @@ fn should_skip<'tcx>( return false; } - if let PatKind::Binding(.., name, _) = arg.pat.kind { + if let PatKind::Binding(.., name, _) = arg.pat.kind // If it's a potentially unused variable, we don't check it. - if name.name == kw::Underscore || name.as_str().starts_with('_') { - return true; - } + && (name.name == kw::Underscore || name.as_str().starts_with('_')) + { + return true; } // All spans generated from a proc-macro invocation are the same... @@ -164,13 +164,13 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByRefMut<'tcx> { }; // Exclude non-inherent impls - if let Node::Item(item) = cx.tcx.parent_hir_node(hir_id) { - if matches!( + if let Node::Item(item) = cx.tcx.parent_hir_node(hir_id) + && matches!( item.kind, ItemKind::Impl(Impl { of_trait: Some(_), .. }) | ItemKind::Trait(..) - ) { - return; - } + ) + { + return; } let fn_sig = cx.tcx.fn_sig(fn_def_id).instantiate_identity(); @@ -353,10 +353,10 @@ impl MutablyUsedVariablesCtxt<'_> { for (parent, node) in self.tcx.hir_parent_iter(item) { if let Some(fn_sig) = self.tcx.hir_fn_sig_by_hir_id(parent) { return fn_sig.header.is_unsafe(); - } else if let Node::Block(block) = node { - if matches!(block.rules, BlockCheckMode::UnsafeBlock(_)) { - return true; - } + } else if let Node::Block(block) = node + && matches!(block.rules, BlockCheckMode::UnsafeBlock(_)) + { + return true; } } false @@ -426,10 +426,10 @@ impl<'tcx> euv::Delegate<'tcx> for MutablyUsedVariablesCtxt<'tcx> { // upon! self.add_mutably_used_var(*vid); } - } else if borrow == ty::BorrowKind::Immutable { + } else if borrow == ty::BorrowKind::Immutable // If there is an `async block`, it'll contain a call to a closure which we need to // go into to ensure all "mutate" checks are found. - if let Node::Expr(Expr { + && let Node::Expr(Expr { kind: ExprKind::Call( _, @@ -442,9 +442,8 @@ impl<'tcx> euv::Delegate<'tcx> for MutablyUsedVariablesCtxt<'tcx> { ), .. }) = self.tcx.hir_node(cmt.hir_id) - { - self.async_closures.insert(*def_id); - } + { + self.async_closures.insert(*def_id); } } @@ -460,10 +459,9 @@ impl<'tcx> euv::Delegate<'tcx> for MutablyUsedVariablesCtxt<'tcx> { }), .. } = &cmt.place + && !projections.is_empty() { - if !projections.is_empty() { - self.add_mutably_used_var(*vid); - } + self.add_mutably_used_var(*vid); } } @@ -477,10 +475,9 @@ impl<'tcx> euv::Delegate<'tcx> for MutablyUsedVariablesCtxt<'tcx> { }), .. } = &cmt.place + && self.is_in_unsafe_block(id) { - if self.is_in_unsafe_block(id) { - self.add_mutably_used_var(*vid); - } + self.add_mutably_used_var(*vid); } self.prev_bind = None; } @@ -499,15 +496,14 @@ impl<'tcx> euv::Delegate<'tcx> for MutablyUsedVariablesCtxt<'tcx> { }), .. } = &cmt.place + && let FakeReadCause::ForLet(Some(inner)) = cause { - if let FakeReadCause::ForLet(Some(inner)) = cause { - // Seems like we are inside an async function. We need to store the closure `DefId` - // to go through it afterwards. - self.async_closures.insert(inner); - self.add_alias(cmt.hir_id, *vid); - self.prev_move_to_closure.insert(*vid); - self.prev_bind = None; - } + // Seems like we are inside an async function. We need to store the closure `DefId` + // to go through it afterwards. + self.async_closures.insert(inner); + self.add_alias(cmt.hir_id, *vid); + self.prev_move_to_closure.insert(*vid); + self.prev_bind = None; } } @@ -522,10 +518,9 @@ impl<'tcx> euv::Delegate<'tcx> for MutablyUsedVariablesCtxt<'tcx> { }), .. } = &cmt.place + && self.is_in_unsafe_block(id) { - if self.is_in_unsafe_block(id) { - self.add_mutably_used_var(*vid); - } + self.add_mutably_used_var(*vid); } } } diff --git a/clippy_lints/src/needless_pass_by_value.rs b/clippy_lints/src/needless_pass_by_value.rs index 978fde33d5170..275d710c76a9b 100644 --- a/clippy_lints/src/needless_pass_by_value.rs +++ b/clippy_lints/src/needless_pass_by_value.rs @@ -98,13 +98,13 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByValue { } // Exclude non-inherent impls - if let Node::Item(item) = cx.tcx.parent_hir_node(hir_id) { - if matches!( + if let Node::Item(item) = cx.tcx.parent_hir_node(hir_id) + && matches!( item.kind, ItemKind::Impl(Impl { of_trait: Some(_), .. }) | ItemKind::Trait(..) - ) { - return; - } + ) + { + return; } // Allow `Borrow` or functions to be taken by value @@ -197,20 +197,18 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByValue { { // Dereference suggestion let sugg = |diag: &mut Diag<'_, ()>| { - if let ty::Adt(def, ..) = ty.kind() { - if let Some(span) = cx.tcx.hir_span_if_local(def.did()) { - if type_allowed_to_implement_copy( - cx.tcx, - cx.param_env, - ty, - traits::ObligationCause::dummy_with_span(span), - rustc_hir::Safety::Safe, - ) - .is_ok() - { - diag.span_help(span, "or consider marking this type as `Copy`"); - } - } + if let ty::Adt(def, ..) = ty.kind() + && let Some(span) = cx.tcx.hir_span_if_local(def.did()) + && type_allowed_to_implement_copy( + cx.tcx, + cx.param_env, + ty, + traits::ObligationCause::dummy_with_span(span), + rustc_hir::Safety::Safe, + ) + .is_ok() + { + diag.span_help(span, "or consider marking this type as `Copy`"); } if is_type_diagnostic_item(cx, ty, sym::Vec) @@ -254,29 +252,28 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByValue { return; } - if is_type_lang_item(cx, ty, LangItem::String) { - if let Some(clone_spans) = + if is_type_lang_item(cx, ty, LangItem::String) + && let Some(clone_spans) = get_spans(cx, Some(body.id()), idx, &[("clone", ".to_string()"), ("as_str", "")]) - { + { + diag.span_suggestion( + input.span, + "consider changing the type to", + "&str", + Applicability::Unspecified, + ); + + for (span, suggestion) in clone_spans { diag.span_suggestion( - input.span, - "consider changing the type to", - "&str", + span, + span.get_source_text(cx) + .map_or("change the call to".to_owned(), |src| format!("change `{src}` to")), + suggestion, Applicability::Unspecified, ); - - for (span, suggestion) in clone_spans { - diag.span_suggestion( - span, - span.get_source_text(cx) - .map_or("change the call to".to_owned(), |src| format!("change `{src}` to")), - suggestion, - Applicability::Unspecified, - ); - } - - return; } + + return; } diag.span_suggestion_verbose( diff --git a/clippy_lints/src/needless_update.rs b/clippy_lints/src/needless_update.rs index cce0617ba3925..4a86c3720ca24 100644 --- a/clippy_lints/src/needless_update.rs +++ b/clippy_lints/src/needless_update.rs @@ -53,18 +53,16 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessUpdate { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { if let ExprKind::Struct(_, fields, StructTailExpr::Base(base)) = expr.kind { let ty = cx.typeck_results().expr_ty(expr); - if let ty::Adt(def, _) = ty.kind() { - let variant = def.non_enum_variant(); - if fields.len() == variant.fields.len() - && !variant.is_field_list_non_exhaustive() - { - span_lint( - cx, - NEEDLESS_UPDATE, - base.span, - "struct update has no effect, all the fields in the struct have already been specified", - ); - } + if let ty::Adt(def, _) = ty.kind() + && fields.len() == def.non_enum_variant().fields.len() + && !def.variant(0_usize.into()).is_field_list_non_exhaustive() + { + span_lint( + cx, + NEEDLESS_UPDATE, + base.span, + "struct update has no effect, all the fields in the struct have already been specified", + ); } } } diff --git a/clippy_lints/src/neg_multiply.rs b/clippy_lints/src/neg_multiply.rs index 429afff9b6642..74c8142787ebc 100644 --- a/clippy_lints/src/neg_multiply.rs +++ b/clippy_lints/src/neg_multiply.rs @@ -16,9 +16,6 @@ declare_clippy_lint! { /// ### Why is this bad? /// It's more readable to just negate. /// - /// ### Known problems - /// This only catches integers (for now). - /// /// ### Example /// ```rust,ignore /// let a = x * -1; @@ -38,23 +35,32 @@ declare_lint_pass!(NegMultiply => [NEG_MULTIPLY]); impl<'tcx> LateLintPass<'tcx> for NegMultiply { fn check_expr(&mut self, cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) { - if let ExprKind::Binary(ref op, left, right) = e.kind { - if BinOpKind::Mul == op.node { - match (&left.kind, &right.kind) { - (&ExprKind::Unary(..), &ExprKind::Unary(..)) => {}, - (&ExprKind::Unary(UnOp::Neg, lit), _) => check_mul(cx, e.span, lit, right), - (_, &ExprKind::Unary(UnOp::Neg, lit)) => check_mul(cx, e.span, lit, left), - _ => {}, - } + if let ExprKind::Binary(ref op, left, right) = e.kind + && BinOpKind::Mul == op.node + { + match (&left.kind, &right.kind) { + (&ExprKind::Unary(..), &ExprKind::Unary(..)) => {}, + (&ExprKind::Unary(UnOp::Neg, lit), _) => check_mul(cx, e.span, lit, right), + (_, &ExprKind::Unary(UnOp::Neg, lit)) => check_mul(cx, e.span, lit, left), + _ => {}, } } } } fn check_mul(cx: &LateContext<'_>, span: Span, lit: &Expr<'_>, exp: &Expr<'_>) { + const F16_ONE: u16 = 1.0_f16.to_bits(); + const F128_ONE: u128 = 1.0_f128.to_bits(); if let ExprKind::Lit(l) = lit.kind - && consts::lit_to_mir_constant(&l.node, cx.typeck_results().expr_ty_opt(lit)) == Constant::Int(1) - && cx.typeck_results().expr_ty(exp).is_integral() + && matches!( + consts::lit_to_mir_constant(&l.node, cx.typeck_results().expr_ty_opt(lit)), + Constant::Int(1) + | Constant::F16(F16_ONE) + | Constant::F32(1.0) + | Constant::F64(1.0) + | Constant::F128(F128_ONE) + ) + && cx.typeck_results().expr_ty(exp).is_numeric() { let mut applicability = Applicability::MachineApplicable; let (snip, from_macro) = snippet_with_context(cx, exp.span, span.ctxt(), "..", &mut applicability); diff --git a/clippy_lints/src/new_without_default.rs b/clippy_lints/src/new_without_default.rs index 1e469c3b63a43..4b73a4455f55b 100644 --- a/clippy_lints/src/new_without_default.rs +++ b/clippy_lints/src/new_without_default.rs @@ -99,10 +99,10 @@ impl<'tcx> LateLintPass<'tcx> for NewWithoutDefault { let mut impls = HirIdSet::default(); for &d in cx.tcx.local_trait_impls(default_trait_id) { let ty = cx.tcx.type_of(d).instantiate_identity(); - if let Some(ty_def) = ty.ty_adt_def() { - if let Some(local_def_id) = ty_def.did().as_local() { - impls.insert(cx.tcx.local_def_id_to_hir_id(local_def_id)); - } + if let Some(ty_def) = ty.ty_adt_def() + && let Some(local_def_id) = ty_def.did().as_local() + { + impls.insert(cx.tcx.local_def_id_to_hir_id(local_def_id)); } } self.impling_types = Some(impls); diff --git a/clippy_lints/src/no_effect.rs b/clippy_lints/src/no_effect.rs index 7187a8f2c11a1..7ab7976d5697a 100644 --- a/clippy_lints/src/no_effect.rs +++ b/clippy_lints/src/no_effect.rs @@ -182,23 +182,22 @@ impl NoEffect { ); return true; } - } else if let StmtKind::Let(local) = stmt.kind { - if !is_lint_allowed(cx, NO_EFFECT_UNDERSCORE_BINDING, local.hir_id) - && !matches!(local.source, LocalSource::AsyncFn) - && let Some(init) = local.init - && local.els.is_none() - && !local.pat.span.from_expansion() - && has_no_effect(cx, init) - && let PatKind::Binding(_, hir_id, ident, _) = local.pat.kind - && ident.name.to_ident_string().starts_with('_') - && !in_automatically_derived(cx.tcx, local.hir_id) - { - if let Some(l) = self.local_bindings.last_mut() { - l.push(hir_id); - self.underscore_bindings.insert(hir_id, ident.span); - } - return true; + } else if let StmtKind::Let(local) = stmt.kind + && !is_lint_allowed(cx, NO_EFFECT_UNDERSCORE_BINDING, local.hir_id) + && !matches!(local.source, LocalSource::AsyncFn) + && let Some(init) = local.init + && local.els.is_none() + && !local.pat.span.from_expansion() + && has_no_effect(cx, init) + && let PatKind::Binding(_, hir_id, ident, _) = local.pat.kind + && ident.name.to_ident_string().starts_with('_') + && !in_automatically_derived(cx.tcx, local.hir_id) + { + if let Some(l) = self.local_bindings.last_mut() { + l.push(hir_id); + self.underscore_bindings.insert(hir_id, ident.span); } + return true; } false } diff --git a/clippy_lints/src/non_canonical_impls.rs b/clippy_lints/src/non_canonical_impls.rs index 448bb603cf2c9..93865197ec965 100644 --- a/clippy_lints/src/non_canonical_impls.rs +++ b/clippy_lints/src/non_canonical_impls.rs @@ -1,6 +1,8 @@ use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_and_then}; use clippy_utils::ty::implements_trait; -use clippy_utils::{is_from_proc_macro, is_res_lang_ctor, last_path_segment, path_res, std_or_core}; +use clippy_utils::{ + is_diag_trait_item, is_from_proc_macro, is_res_lang_ctor, last_path_segment, path_res, std_or_core, +}; use rustc_errors::Applicability; use rustc_hir::def_id::LocalDefId; use rustc_hir::{Expr, ExprKind, ImplItem, ImplItemKind, LangItem, Node, UnOp}; @@ -98,7 +100,7 @@ declare_clippy_lint! { /// /// impl PartialOrd for A { /// fn partial_cmp(&self, other: &Self) -> Option { - /// Some(self.cmp(other)) + /// Some(self.cmp(other)) // or self.cmp(other).into() /// } /// } /// ``` @@ -185,65 +187,66 @@ impl LateLintPass<'_> for NonCanonicalImpls { if block.stmts.is_empty() && let Some(expr) = block.expr - && expr_is_cmp(cx, &expr.kind, impl_item, &mut needs_fully_qualified) + && expr_is_cmp(cx, expr, impl_item, &mut needs_fully_qualified) { + return; } // Fix #12683, allow [`needless_return`] here else if block.expr.is_none() && let Some(stmt) = block.stmts.first() && let rustc_hir::StmtKind::Semi(Expr { - kind: ExprKind::Ret(Some(Expr { kind: ret_kind, .. })), + kind: ExprKind::Ret(Some(ret)), .. }) = stmt.kind - && expr_is_cmp(cx, ret_kind, impl_item, &mut needs_fully_qualified) + && expr_is_cmp(cx, ret, impl_item, &mut needs_fully_qualified) { - } else { - // If `Self` and `Rhs` are not the same type, bail. This makes creating a valid - // suggestion tons more complex. - if let [lhs, rhs, ..] = trait_impl.args.as_slice() - && lhs != rhs - { - return; - } + return; + } + // If `Self` and `Rhs` are not the same type, bail. This makes creating a valid + // suggestion tons more complex. + else if let [lhs, rhs, ..] = trait_impl.args.as_slice() + && lhs != rhs + { + return; + } - span_lint_and_then( - cx, - NON_CANONICAL_PARTIAL_ORD_IMPL, - item.span, - "non-canonical implementation of `partial_cmp` on an `Ord` type", - |diag| { - let [_, other] = body.params else { - return; - }; - let Some(std_or_core) = std_or_core(cx) else { - return; - }; + span_lint_and_then( + cx, + NON_CANONICAL_PARTIAL_ORD_IMPL, + item.span, + "non-canonical implementation of `partial_cmp` on an `Ord` type", + |diag| { + let [_, other] = body.params else { + return; + }; + let Some(std_or_core) = std_or_core(cx) else { + return; + }; - let suggs = match (other.pat.simple_ident(), needs_fully_qualified) { - (Some(other_ident), true) => vec![( + let suggs = match (other.pat.simple_ident(), needs_fully_qualified) { + (Some(other_ident), true) => vec![( + block.span, + format!("{{ Some({std_or_core}::cmp::Ord::cmp(self, {})) }}", other_ident.name), + )], + (Some(other_ident), false) => { + vec![(block.span, format!("{{ Some(self.cmp({})) }}", other_ident.name))] + }, + (None, true) => vec![ + ( block.span, - format!("{{ Some({std_or_core}::cmp::Ord::cmp(self, {})) }}", other_ident.name), - )], - (Some(other_ident), false) => { - vec![(block.span, format!("{{ Some(self.cmp({})) }}", other_ident.name))] - }, - (None, true) => vec![ - ( - block.span, - format!("{{ Some({std_or_core}::cmp::Ord::cmp(self, other)) }}"), - ), - (other.pat.span, "other".to_owned()), - ], - (None, false) => vec![ - (block.span, "{ Some(self.cmp(other)) }".to_owned()), - (other.pat.span, "other".to_owned()), - ], - }; + format!("{{ Some({std_or_core}::cmp::Ord::cmp(self, other)) }}"), + ), + (other.pat.span, "other".to_owned()), + ], + (None, false) => vec![ + (block.span, "{ Some(self.cmp(other)) }".to_owned()), + (other.pat.span, "other".to_owned()), + ], + }; - diag.multipart_suggestion("change this to", suggs, Applicability::Unspecified); - }, - ); - } + diag.multipart_suggestion("change this to", suggs, Applicability::Unspecified); + }, + ); } } } @@ -251,10 +254,11 @@ impl LateLintPass<'_> for NonCanonicalImpls { /// Return true if `expr_kind` is a `cmp` call. fn expr_is_cmp<'tcx>( cx: &LateContext<'tcx>, - expr_kind: &'tcx ExprKind<'tcx>, + expr: &'tcx Expr<'tcx>, impl_item: &ImplItem<'_>, needs_fully_qualified: &mut bool, ) -> bool { + let impl_item_did = impl_item.owner_id.def_id; if let ExprKind::Call( Expr { kind: ExprKind::Path(some_path), @@ -262,11 +266,17 @@ fn expr_is_cmp<'tcx>( .. }, [cmp_expr], - ) = expr_kind + ) = expr.kind { is_res_lang_ctor(cx, cx.qpath_res(some_path, *some_hir_id), LangItem::OptionSome) // Fix #11178, allow `Self::cmp(self, ..)` too - && self_cmp_call(cx, cmp_expr, impl_item.owner_id.def_id, needs_fully_qualified) + && self_cmp_call(cx, cmp_expr, impl_item_did, needs_fully_qualified) + } else if let ExprKind::MethodCall(_, recv, [], _) = expr.kind { + cx.tcx + .typeck(impl_item_did) + .type_dependent_def_id(expr.hir_id) + .is_some_and(|def_id| is_diag_trait_item(cx, def_id, sym::Into)) + && self_cmp_call(cx, recv, impl_item_did, needs_fully_qualified) } else { false } diff --git a/clippy_lints/src/non_copy_const.rs b/clippy_lints/src/non_copy_const.rs index 9b53608ae7f3c..63859c0396e48 100644 --- a/clippy_lints/src/non_copy_const.rs +++ b/clippy_lints/src/non_copy_const.rs @@ -449,7 +449,7 @@ impl<'tcx> LateLintPass<'tcx> for NonCopyConst<'tcx> { dereferenced_expr = parent_expr; }, - ExprKind::Index(e, _, _) if ptr::eq(&**e, cur_expr) => { + ExprKind::Index(e, _, _) if ptr::eq(&raw const **e, cur_expr) => { // `e[i]` => desugared to `*Index::index(&e, i)`, // meaning `e` must be referenced. // no need to go further up since a method call is involved now. diff --git a/clippy_lints/src/non_std_lazy_statics.rs b/clippy_lints/src/non_std_lazy_statics.rs index 8305bf345ef19..f6bc9428d65f2 100644 --- a/clippy_lints/src/non_std_lazy_statics.rs +++ b/clippy_lints/src/non_std_lazy_statics.rs @@ -37,7 +37,7 @@ declare_clippy_lint! { /// static FOO: std::sync::LazyLock = std::sync::LazyLock::new(|| "FOO".to_lowercase()); /// static BAR: std::sync::LazyLock = std::sync::LazyLock::new(|| "BAR".to_lowercase()); /// ``` - #[clippy::version = "1.81.0"] + #[clippy::version = "1.86.0"] pub NON_STD_LAZY_STATICS, pedantic, "lazy static that could be replaced by `std::sync::LazyLock`" @@ -121,7 +121,7 @@ impl<'hir> LateLintPass<'hir> for NonStdLazyStatic { cx, NON_STD_LAZY_STATICS, macro_call.span, - "this macro has been superceded by `std::sync::LazyLock`", + "this macro has been superseded by `std::sync::LazyLock`", ); return; } @@ -240,7 +240,7 @@ impl LazyInfo { cx, NON_STD_LAZY_STATICS, self.ty_span_no_args, - "this type has been superceded by `LazyLock` in the standard library", + "this type has been superseded by `LazyLock` in the standard library", |diag| { diag.multipart_suggestion("use `std::sync::LazyLock` instead", suggs, appl); }, diff --git a/clippy_lints/src/non_zero_suggestions.rs b/clippy_lints/src/non_zero_suggestions.rs index 16c4391c0fbea..635f5678e2a65 100644 --- a/clippy_lints/src/non_zero_suggestions.rs +++ b/clippy_lints/src/non_zero_suggestions.rs @@ -82,11 +82,10 @@ fn check_non_zero_conversion(cx: &LateContext<'_>, expr: &Expr<'_>, applicabilit if let ty::Adt(adt_def, _) = receiver_ty.kind() && adt_def.is_struct() && cx.tcx.get_diagnostic_name(adt_def.did()) == Some(sym::NonZero) + && let Some(target_non_zero_type) = get_target_non_zero_type(target_ty) { - if let Some(target_non_zero_type) = get_target_non_zero_type(target_ty) { - let arg_snippet = get_arg_snippet(cx, arg, rcv_path); - suggest_non_zero_conversion(cx, expr, fn_name, target_non_zero_type, &arg_snippet, applicability); - } + let arg_snippet = get_arg_snippet(cx, arg, rcv_path); + suggest_non_zero_conversion(cx, expr, fn_name, target_non_zero_type, &arg_snippet, applicability); } } } diff --git a/clippy_lints/src/operators/cmp_owned.rs b/clippy_lints/src/operators/cmp_owned.rs index cf6b8992973a7..9b2cfd91b8535 100644 --- a/clippy_lints/src/operators/cmp_owned.rs +++ b/clippy_lints/src/operators/cmp_owned.rs @@ -98,7 +98,7 @@ fn check_op(cx: &LateContext<'_>, expr: &Expr<'_>, other: &Expr<'_>, left: bool) let arg_snip = snippet(cx, arg_span, ".."); let expr_snip; let eq_impl; - if with_deref.is_implemented() { + if with_deref.is_implemented() && !arg_ty.peel_refs().is_str() { expr_snip = format!("*{arg_snip}"); eq_impl = with_deref; } else { diff --git a/clippy_lints/src/operators/float_equality_without_abs.rs b/clippy_lints/src/operators/float_equality_without_abs.rs index 74e0a6333db0f..047a5a0159cb0 100644 --- a/clippy_lints/src/operators/float_equality_without_abs.rs +++ b/clippy_lints/src/operators/float_equality_without_abs.rs @@ -50,7 +50,7 @@ pub(crate) fn check<'tcx>( // format the suggestion let suggestion = format!( "{}.abs()", - sugg::make_assoc(AssocOp::Binary(BinOpKind::Sub), &sug_l, &sug_r).maybe_par() + sugg::make_assoc(AssocOp::Binary(BinOpKind::Sub), &sug_l, &sug_r).maybe_paren() ); // spans the lint span_lint_and_then( diff --git a/clippy_lints/src/operators/identity_op.rs b/clippy_lints/src/operators/identity_op.rs index 0358232282786..e1fd09549a4b8 100644 --- a/clippy_lints/src/operators/identity_op.rs +++ b/clippy_lints/src/operators/identity_op.rs @@ -103,7 +103,7 @@ enum Parens { /// /// e.g. `-(x + y + 0)` cannot be reduced to `-x + y`, as the behavior changes silently. /// e.g. `1u64 + ((x + y + 0i32) as u64)` cannot be reduced to `1u64 + x + y as u64`, since -/// the the cast expression will not apply to the same expression. +/// the cast expression will not apply to the same expression. /// e.g. `0 + if b { 1 } else { 2 } + if b { 3 } else { 4 }` cannot be reduced /// to `if b { 1 } else { 2 } + if b { 3 } else { 4 }` where the `if` could be /// interpreted as a statement. The same behavior happens for `match`, `loop`, diff --git a/clippy_lints/src/operators/modulo_one.rs b/clippy_lints/src/operators/modulo_one.rs index fc5565e821edd..2e6a071eb1848 100644 --- a/clippy_lints/src/operators/modulo_one.rs +++ b/clippy_lints/src/operators/modulo_one.rs @@ -12,15 +12,15 @@ pub(crate) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, op: BinOpKind, right: span_lint(cx, MODULO_ONE, expr.span, "any number modulo 1 will be 0"); } - if let ty::Int(ity) = cx.typeck_results().expr_ty(right).kind() { - if is_integer_const(cx, right, unsext(cx.tcx, -1, *ity)) { - span_lint( - cx, - MODULO_ONE, - expr.span, - "any number modulo -1 will panic/overflow or result in 0", - ); - } + if let ty::Int(ity) = cx.typeck_results().expr_ty(right).kind() + && is_integer_const(cx, right, unsext(cx.tcx, -1, *ity)) + { + span_lint( + cx, + MODULO_ONE, + expr.span, + "any number modulo -1 will panic/overflow or result in 0", + ); } } } diff --git a/clippy_lints/src/operators/numeric_arithmetic.rs b/clippy_lints/src/operators/numeric_arithmetic.rs index 96c9775e292e6..e6be536ca0f4e 100644 --- a/clippy_lints/src/operators/numeric_arithmetic.rs +++ b/clippy_lints/src/operators/numeric_arithmetic.rs @@ -75,10 +75,10 @@ impl Context { hir::BodyOwnerKind::Static(_) | hir::BodyOwnerKind::Const { .. } => { let body_span = cx.tcx.hir_span_with_body(body_owner); - if let Some(span) = self.const_span { - if span.contains(body_span) { - return; - } + if let Some(span) = self.const_span + && span.contains(body_span) + { + return; } self.const_span = Some(body_span); }, @@ -90,10 +90,10 @@ impl Context { let body_owner = cx.tcx.hir_body_owner(body.id()); let body_span = cx.tcx.hir_span_with_body(body_owner); - if let Some(span) = self.const_span { - if span.contains(body_span) { - return; - } + if let Some(span) = self.const_span + && span.contains(body_span) + { + return; } self.const_span = None; } diff --git a/clippy_lints/src/operators/op_ref.rs b/clippy_lints/src/operators/op_ref.rs index 378fed481f4fe..0faa7b9e64665 100644 --- a/clippy_lints/src/operators/op_ref.rs +++ b/clippy_lints/src/operators/op_ref.rs @@ -47,12 +47,11 @@ pub(crate) fn check<'tcx>( let rty = cx.typeck_results().expr_ty(r); let lcpy = is_copy(cx, lty); let rcpy = is_copy(cx, rty); - if let Some((self_ty, other_ty)) = in_impl(cx, e, trait_id) { - if (are_equal(cx, rty, self_ty) && are_equal(cx, lty, other_ty)) - || (are_equal(cx, rty, other_ty) && are_equal(cx, lty, self_ty)) - { - return; // Don't lint - } + if let Some((self_ty, other_ty)) = in_impl(cx, e, trait_id) + && ((are_equal(cx, rty, self_ty) && are_equal(cx, lty, other_ty)) + || (are_equal(cx, rty, other_ty) && are_equal(cx, lty, self_ty))) + { + return; // Don't lint } // either operator autorefs or both args are copyable if (requires_ref || (lcpy && rcpy)) && implements_trait(cx, lty, trait_id, &[rty.into()]) { @@ -86,7 +85,7 @@ pub(crate) fn check<'tcx>( left.span, "use the left value directly", lsnip, - Applicability::MaybeIncorrect, // FIXME #2597 + Applicability::MachineApplicable, ); }, ); @@ -105,7 +104,7 @@ pub(crate) fn check<'tcx>( right.span, "use the right value directly", rsnip, - Applicability::MaybeIncorrect, // FIXME #2597 + Applicability::MachineApplicable, ); }, ); @@ -137,7 +136,7 @@ pub(crate) fn check<'tcx>( left.span, "use the left value directly", lsnip, - Applicability::MaybeIncorrect, // FIXME #2597 + Applicability::MachineApplicable, ); }, ); @@ -164,7 +163,7 @@ pub(crate) fn check<'tcx>( right.span, "use the right value directly", rsnip, - Applicability::MaybeIncorrect, // FIXME #2597 + Applicability::MachineApplicable, ); }); } diff --git a/clippy_lints/src/operators/verbose_bit_mask.rs b/clippy_lints/src/operators/verbose_bit_mask.rs index a6aba33e431a4..1477378914120 100644 --- a/clippy_lints/src/operators/verbose_bit_mask.rs +++ b/clippy_lints/src/operators/verbose_bit_mask.rs @@ -32,7 +32,7 @@ pub(super) fn check<'tcx>( e.span, "bit mask could be simplified with a call to `trailing_zeros`", |diag| { - let sugg = Sugg::hir(cx, left1, "...").maybe_par(); + let sugg = Sugg::hir(cx, left1, "...").maybe_paren(); diag.span_suggestion( e.span, "try", diff --git a/clippy_lints/src/option_if_let_else.rs b/clippy_lints/src/option_if_let_else.rs index 6f302ea196217..9487cec87efb8 100644 --- a/clippy_lints/src/option_if_let_else.rs +++ b/clippy_lints/src/option_if_let_else.rs @@ -4,8 +4,8 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::sugg::Sugg; use clippy_utils::ty::is_copy; use clippy_utils::{ - CaptureKind, can_move_expr_to_closure, eager_or_lazy, higher, is_else_clause, is_in_const_context, - is_res_lang_ctor, peel_blocks, peel_hir_expr_while, + CaptureKind, can_move_expr_to_closure, eager_or_lazy, expr_requires_coercion, higher, is_else_clause, + is_in_const_context, is_res_lang_ctor, peel_blocks, peel_hir_expr_while, }; use rustc_data_structures::fx::FxHashSet; use rustc_errors::Applicability; @@ -106,7 +106,7 @@ struct OptionOccurrence { fn format_option_in_sugg(cond_sugg: Sugg<'_>, as_ref: bool, as_mut: bool) -> String { format!( "{}{}", - cond_sugg.maybe_par(), + cond_sugg.maybe_paren(), if as_mut { ".as_mut()" } else if as_ref { @@ -212,6 +212,15 @@ fn try_get_option_occurrence<'tcx>( } } + let some_body_ty = cx.typeck_results().expr_ty(some_body); + let none_body_ty = cx.typeck_results().expr_ty(none_body); + // Check if coercion is needed for the `None` arm. If so, we cannot suggest because it will + // introduce a type mismatch. A special case is when both arms have the same type, then + // coercion is fine. + if some_body_ty != none_body_ty && expr_requires_coercion(cx, none_body) { + return None; + } + let mut app = Applicability::Unspecified; let (none_body, is_argless_call) = match none_body.kind { diff --git a/clippy_lints/src/partialeq_ne_impl.rs b/clippy_lints/src/partialeq_ne_impl.rs index 65671b478ba74..8eaf65e63065e 100644 --- a/clippy_lints/src/partialeq_ne_impl.rs +++ b/clippy_lints/src/partialeq_ne_impl.rs @@ -38,7 +38,7 @@ impl<'tcx> LateLintPass<'tcx> for PartialEqNeImpl { items: impl_items, .. }) = item.kind - && !cx.tcx.has_attr(item.owner_id, sym::automatically_derived) + && !cx.tcx.is_automatically_derived(item.owner_id.to_def_id()) && let Some(eq_trait) = cx.tcx.lang_items().eq_trait() && trait_ref.path.res.def_id() == eq_trait { diff --git a/clippy_lints/src/partialeq_to_none.rs b/clippy_lints/src/partialeq_to_none.rs index 6d4216970cc4d..9b9024c810575 100644 --- a/clippy_lints/src/partialeq_to_none.rs +++ b/clippy_lints/src/partialeq_to_none.rs @@ -81,7 +81,7 @@ impl<'tcx> LateLintPass<'tcx> for PartialeqToNone { let sugg = format!( "{}.{}", sugg::Sugg::hir_with_applicability(cx, peel_ref_operators(cx, scrutinee), "..", &mut applicability) - .maybe_par(), + .maybe_paren(), if is_eq { "is_none()" } else { "is_some()" } ); diff --git a/clippy_lints/src/pass_by_ref_or_value.rs b/clippy_lints/src/pass_by_ref_or_value.rs index 0a8e288564875..5d30b66def2c8 100644 --- a/clippy_lints/src/pass_by_ref_or_value.rs +++ b/clippy_lints/src/pass_by_ref_or_value.rs @@ -178,19 +178,18 @@ impl PassByRefOrValue { && size <= self.ref_min_size && let hir::TyKind::Ref(_, MutTy { ty: decl_ty, .. }) = input.kind { - if let Some(typeck) = cx.maybe_typeck_results() { + if let Some(typeck) = cx.maybe_typeck_results() // Don't lint if a raw pointer is created. // TODO: Limit the check only to raw pointers to the argument (or part of the argument) // which escape the current function. - if typeck.node_types().items().any(|(_, &ty)| ty.is_raw_ptr()) + && (typeck.node_types().items().any(|(_, &ty)| ty.is_raw_ptr()) || typeck .adjustments() .items() .flat_map(|(_, a)| a) - .any(|a| matches!(a.kind, Adjust::Pointer(PointerCoercion::UnsafeFnPointer))) - { - continue; - } + .any(|a| matches!(a.kind, Adjust::Pointer(PointerCoercion::UnsafeFnPointer)))) + { + continue; } let value_type = if fn_body.and_then(|body| body.params.get(index)).is_some_and(is_self) { "self".into() @@ -282,12 +281,11 @@ impl<'tcx> LateLintPass<'tcx> for PassByRefOrValue { } let attrs = cx.tcx.hir_attrs(hir_id); for a in attrs { - if let Some(meta_items) = a.meta_item_list() { - if a.has_name(sym::proc_macro_derive) - || (a.has_name(sym::inline) && attr::list_contains_name(&meta_items, sym::always)) - { - return; - } + if let Some(meta_items) = a.meta_item_list() + && (a.has_name(sym::proc_macro_derive) + || (a.has_name(sym::inline) && attr::list_contains_name(&meta_items, sym::always))) + { + return; } } }, @@ -296,13 +294,13 @@ impl<'tcx> LateLintPass<'tcx> for PassByRefOrValue { } // Exclude non-inherent impls - if let Node::Item(item) = cx.tcx.parent_hir_node(hir_id) { - if matches!( + if let Node::Item(item) = cx.tcx.parent_hir_node(hir_id) + && matches!( item.kind, ItemKind::Impl(Impl { of_trait: Some(_), .. }) | ItemKind::Trait(..) - ) { - return; - } + ) + { + return; } self.check_poly_fn(cx, def_id, decl, Some(span)); diff --git a/clippy_lints/src/pathbuf_init_then_push.rs b/clippy_lints/src/pathbuf_init_then_push.rs index b653b459b04c8..35caac855cf61 100644 --- a/clippy_lints/src/pathbuf_init_then_push.rs +++ b/clippy_lints/src/pathbuf_init_then_push.rs @@ -173,16 +173,15 @@ impl<'tcx> LateLintPass<'tcx> for PathbufThenPush<'tcx> { } fn check_stmt(&mut self, cx: &LateContext<'tcx>, stmt: &'tcx Stmt<'_>) { - if let Some(mut searcher) = self.searcher.take() { - if let StmtKind::Expr(expr) | StmtKind::Semi(expr) = stmt.kind - && let ExprKind::MethodCall(name, self_arg, [arg_expr], _) = expr.kind - && path_to_local_id(self_arg, searcher.local_id) - && name.ident.as_str() == "push" - { - searcher.err_span = searcher.err_span.to(stmt.span); - searcher.arg = Some(*arg_expr); - searcher.display_err(cx); - } + if let Some(mut searcher) = self.searcher.take() + && let StmtKind::Expr(expr) | StmtKind::Semi(expr) = stmt.kind + && let ExprKind::MethodCall(name, self_arg, [arg_expr], _) = expr.kind + && path_to_local_id(self_arg, searcher.local_id) + && name.ident.as_str() == "push" + { + searcher.err_span = searcher.err_span.to(stmt.span); + searcher.arg = Some(*arg_expr); + searcher.display_err(cx); } } diff --git a/clippy_lints/src/pattern_type_mismatch.rs b/clippy_lints/src/pattern_type_mismatch.rs index 96d3f7196c0cb..19d9acfc9305a 100644 --- a/clippy_lints/src/pattern_type_mismatch.rs +++ b/clippy_lints/src/pattern_type_mismatch.rs @@ -177,17 +177,16 @@ fn find_first_mismatch(cx: &LateContext<'_>, pat: &Pat<'_>) -> Option<(Span, Mut PatKind::Or([p, ..]) => p, _ => p, }; - if let Some(adjustments) = cx.typeck_results().pat_adjustments().get(adjust_pat.hir_id) { - if let [first, ..] = **adjustments { - if let ty::Ref(.., mutability) = *first.source.kind() { - let level = if p.hir_id == pat.hir_id { - Level::Top - } else { - Level::Lower - }; - result = Some((p.span, mutability, level)); - } - } + if let Some(adjustments) = cx.typeck_results().pat_adjustments().get(adjust_pat.hir_id) + && let [first, ..] = **adjustments + && let ty::Ref(.., mutability) = *first.source.kind() + { + let level = if p.hir_id == pat.hir_id { + Level::Top + } else { + Level::Lower + }; + result = Some((p.span, mutability, level)); } result.is_none() }); diff --git a/clippy_lints/src/ptr.rs b/clippy_lints/src/ptr.rs index 901a1634ddc88..491961408adb8 100644 --- a/clippy_lints/src/ptr.rs +++ b/clippy_lints/src/ptr.rs @@ -264,8 +264,8 @@ impl<'tcx> LateLintPass<'tcx> for Ptr { is_null_path(cx, l), is_null_path(cx, r), ) { - (false, true, false) if let Some(sugg) = Sugg::hir_opt(cx, r) => sugg.maybe_par(), - (false, false, true) if let Some(sugg) = Sugg::hir_opt(cx, l) => sugg.maybe_par(), + (false, true, false) if let Some(sugg) = Sugg::hir_opt(cx, r) => sugg.maybe_paren(), + (false, false, true) if let Some(sugg) = Sugg::hir_opt(cx, l) => sugg.maybe_paren(), _ => return check_ptr_eq(cx, expr, op.node, l, r), }; @@ -498,29 +498,33 @@ fn check_fn_args<'cx, 'tcx: 'cx>( } fn check_mut_from_ref<'tcx>(cx: &LateContext<'tcx>, sig: &FnSig<'_>, body: Option<&Body<'tcx>>) { - if let FnRetTy::Return(ty) = sig.decl.output - && let Some((out, Mutability::Mut, _)) = get_ref_lm(ty) - { + let FnRetTy::Return(ty) = sig.decl.output else { return }; + for (out, mutability, out_span) in get_lifetimes(ty) { + if mutability != Some(Mutability::Mut) { + continue; + } let out_region = cx.tcx.named_bound_var(out.hir_id); - let args: Option> = sig + // `None` if one of the types contains `&'a mut T` or `T<'a>`. + // Else, contains all the locations of `&'a T` types. + let args_immut_refs: Option> = sig .decl .inputs .iter() - .filter_map(get_ref_lm) + .flat_map(get_lifetimes) .filter(|&(lt, _, _)| cx.tcx.named_bound_var(lt.hir_id) == out_region) - .map(|(_, mutability, span)| (mutability == Mutability::Not).then_some(span)) + .map(|(_, mutability, span)| (mutability == Some(Mutability::Not)).then_some(span)) .collect(); - if let Some(args) = args - && !args.is_empty() + if let Some(args_immut_refs) = args_immut_refs + && !args_immut_refs.is_empty() && body.is_none_or(|body| sig.header.is_unsafe() || contains_unsafe_block(cx, body.value)) { span_lint_and_then( cx, MUT_FROM_REF, - ty.span, + out_span, "mutable borrow from immutable input(s)", |diag| { - let ms = MultiSpan::from_spans(args); + let ms = MultiSpan::from_spans(args_immut_refs); diag.span_note(ms, "immutable borrow here"); }, ); @@ -686,12 +690,36 @@ fn matches_preds<'tcx>( }) } -fn get_ref_lm<'tcx>(ty: &'tcx hir::Ty<'tcx>) -> Option<(&'tcx Lifetime, Mutability, Span)> { - if let TyKind::Ref(lt, ref m) = ty.kind { - Some((lt, m.mutbl, ty.span)) - } else { - None +struct LifetimeVisitor<'tcx> { + result: Vec<(&'tcx Lifetime, Option, Span)>, +} + +impl<'tcx> Visitor<'tcx> for LifetimeVisitor<'tcx> { + fn visit_ty(&mut self, ty: &'tcx hir::Ty<'tcx, hir::AmbigArg>) { + if let TyKind::Ref(lt, ref m) = ty.kind { + self.result.push((lt, Some(m.mutbl), ty.span)); + } + hir::intravisit::walk_ty(self, ty); } + + fn visit_generic_arg(&mut self, generic_arg: &'tcx GenericArg<'tcx>) { + if let GenericArg::Lifetime(lt) = generic_arg { + self.result.push((lt, None, generic_arg.span())); + } + hir::intravisit::walk_generic_arg(self, generic_arg); + } +} + +/// Visit `ty` and collect the all the lifetimes appearing in it, implicit or not. +/// +/// The second field of the vector's elements indicate if the lifetime is attached to a +/// shared reference, a mutable reference, or neither. +fn get_lifetimes<'tcx>(ty: &'tcx hir::Ty<'tcx>) -> Vec<(&'tcx Lifetime, Option, Span)> { + use hir::intravisit::VisitorExt as _; + + let mut visitor = LifetimeVisitor { result: Vec::new() }; + visitor.visit_ty_unambig(ty); + visitor.result } fn is_null_path(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { @@ -728,8 +756,9 @@ fn check_ptr_eq<'tcx>( let (left_var, right_var) = (peel_raw_casts(cx, left, left_ty), peel_raw_casts(cx, right, right_ty)); - if let Some(left_snip) = left_var.span.get_source_text(cx) - && let Some(right_snip) = right_var.span.get_source_text(cx) + let mut app = Applicability::MachineApplicable; + let left_snip = Sugg::hir_with_context(cx, left_var, expr.span.ctxt(), "_", &mut app); + let right_snip = Sugg::hir_with_context(cx, right_var, expr.span.ctxt(), "_", &mut app); { let Some(top_crate) = std_or_core(cx) else { return }; let invert = if op == BinOpKind::Eq { "" } else { "!" }; @@ -740,7 +769,7 @@ fn check_ptr_eq<'tcx>( format!("use `{top_crate}::ptr::eq` when comparing raw pointers"), "try", format!("{invert}{top_crate}::ptr::eq({left_snip}, {right_snip})"), - Applicability::MachineApplicable, + app, ); } } @@ -748,7 +777,8 @@ fn check_ptr_eq<'tcx>( // If the given expression is a cast to a usize, return the lhs of the cast // E.g., `foo as *const _ as usize` returns `foo as *const _`. fn expr_as_cast_to_usize<'tcx>(cx: &LateContext<'tcx>, cast_expr: &'tcx Expr<'_>) -> Option<&'tcx Expr<'tcx>> { - if cx.typeck_results().expr_ty(cast_expr) == cx.tcx.types.usize + if !cast_expr.span.from_expansion() + && cx.typeck_results().expr_ty(cast_expr) == cx.tcx.types.usize && let ExprKind::Cast(expr, _) = cast_expr.kind { Some(expr) @@ -759,7 +789,8 @@ fn expr_as_cast_to_usize<'tcx>(cx: &LateContext<'tcx>, cast_expr: &'tcx Expr<'_> // Peel raw casts if the remaining expression can be coerced to it fn peel_raw_casts<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>, expr_ty: Ty<'tcx>) -> &'tcx Expr<'tcx> { - if let ExprKind::Cast(inner, _) = expr.kind + if !expr.span.from_expansion() + && let ExprKind::Cast(inner, _) = expr.kind && let ty::RawPtr(target_ty, _) = expr_ty.kind() && let inner_ty = cx.typeck_results().expr_ty(inner) && let ty::RawPtr(inner_target_ty, _) | ty::Ref(_, inner_target_ty, _) = inner_ty.kind() diff --git a/clippy_lints/src/ptr_offset_with_cast.rs b/clippy_lints/src/ptr_offset_with_cast.rs index 68ae575c9063f..7f74a2fff9f20 100644 --- a/clippy_lints/src/ptr_offset_with_cast.rs +++ b/clippy_lints/src/ptr_offset_with_cast.rs @@ -77,10 +77,10 @@ impl<'tcx> LateLintPass<'tcx> for PtrOffsetWithCast { // If the given expression is a cast from a usize, return the lhs of the cast fn expr_as_cast_from_usize<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) -> Option<&'tcx Expr<'tcx>> { - if let ExprKind::Cast(cast_lhs_expr, _) = expr.kind { - if is_expr_ty_usize(cx, cast_lhs_expr) { - return Some(cast_lhs_expr); - } + if let ExprKind::Cast(cast_lhs_expr, _) = expr.kind + && is_expr_ty_usize(cx, cast_lhs_expr) + { + return Some(cast_lhs_expr); } None } @@ -91,14 +91,14 @@ fn expr_as_ptr_offset_call<'tcx>( cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, ) -> Option<(&'tcx Expr<'tcx>, &'tcx Expr<'tcx>, Method)> { - if let ExprKind::MethodCall(path_segment, arg_0, [arg_1], _) = &expr.kind { - if is_expr_ty_raw_ptr(cx, arg_0) { - if path_segment.ident.name == sym::offset { - return Some((arg_0, arg_1, Method::Offset)); - } - if path_segment.ident.name.as_str() == "wrapping_offset" { - return Some((arg_0, arg_1, Method::WrappingOffset)); - } + if let ExprKind::MethodCall(path_segment, arg_0, [arg_1], _) = &expr.kind + && is_expr_ty_raw_ptr(cx, arg_0) + { + if path_segment.ident.name == sym::offset { + return Some((arg_0, arg_1, Method::Offset)); + } + if path_segment.ident.name.as_str() == "wrapping_offset" { + return Some((arg_0, arg_1, Method::WrappingOffset)); } } None diff --git a/clippy_lints/src/question_mark.rs b/clippy_lints/src/question_mark.rs index a80e1f79bbc77..d318897443da5 100644 --- a/clippy_lints/src/question_mark.rs +++ b/clippy_lints/src/question_mark.rs @@ -5,6 +5,7 @@ use clippy_config::types::MatchLintBehaviour; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_applicability; +use clippy_utils::sugg::Sugg; use clippy_utils::ty::{implements_trait, is_type_diagnostic_item}; use clippy_utils::{ eq_expr_value, higher, is_else_clause, is_in_const_context, is_lint_allowed, is_path_lang_item, is_res_lang_ctor, @@ -144,7 +145,7 @@ fn check_let_some_else_return_none(cx: &LateContext<'_>, stmt: &Stmt<'_>) { && !span_contains_comment(cx.tcx.sess.source_map(), els.span) { let mut applicability = Applicability::MaybeIncorrect; - let init_expr_str = snippet_with_applicability(cx, init_expr.span, "..", &mut applicability); + let init_expr_str = Sugg::hir_with_applicability(cx, init_expr, "..", &mut applicability).maybe_paren(); // Take care when binding is `ref` let sugg = if let PatKind::Binding( BindingMode(ByRef::Yes(ref_mutability), binding_mutability), diff --git a/clippy_lints/src/ranges.rs b/clippy_lints/src/ranges.rs index cc423eca74fbe..d292ed86ea4c6 100644 --- a/clippy_lints/src/ranges.rs +++ b/clippy_lints/src/ranges.rs @@ -179,10 +179,10 @@ impl_lint_pass!(Ranges => [ impl<'tcx> LateLintPass<'tcx> for Ranges { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { - if let ExprKind::Binary(ref op, l, r) = expr.kind { - if self.msrv.meets(cx, msrvs::RANGE_CONTAINS) { - check_possible_range_contains(cx, op.node, l, r, expr, expr.span); - } + if let ExprKind::Binary(ref op, l, r) = expr.kind + && self.msrv.meets(cx, msrvs::RANGE_CONTAINS) + { + check_possible_range_contains(cx, op.node, l, r, expr, expr.span); } check_exclusive_range_plus_one(cx, expr); @@ -327,18 +327,18 @@ fn check_range_bounds<'a, 'tcx>(cx: &'a LateContext<'tcx>, ex: &'a Expr<'_>) -> inc: inclusive, }); } - } else if let Some(id) = path_to_local(r) { - if let Some(c) = ConstEvalCtxt::new(cx).eval(l) { - return Some(RangeBounds { - val: c, - expr: l, - id, - name_span: r.span, - val_span: l.span, - ord: ordering.reverse(), - inc: inclusive, - }); - } + } else if let Some(id) = path_to_local(r) + && let Some(c) = ConstEvalCtxt::new(cx).eval(l) + { + return Some(RangeBounds { + val: c, + expr: l, + id, + name_span: r.span, + val_span: l.span, + ord: ordering.reverse(), + inc: inclusive, + }); } } None @@ -361,8 +361,8 @@ fn check_exclusive_range_plus_one(cx: &LateContext<'_>, expr: &Expr<'_>) { span, "an inclusive range would be more readable", |diag| { - let start = start.map_or(String::new(), |x| Sugg::hir(cx, x, "x").maybe_par().to_string()); - let end = Sugg::hir(cx, y, "y").maybe_par(); + let start = start.map_or(String::new(), |x| Sugg::hir(cx, x, "x").maybe_paren().to_string()); + let end = Sugg::hir(cx, y, "y").maybe_paren(); match span.with_source_text(cx, |src| src.starts_with('(') && src.ends_with(')')) { Some(true) => { diag.span_suggestion(span, "use", format!("({start}..={end})"), Applicability::MaybeIncorrect); @@ -398,8 +398,8 @@ fn check_inclusive_range_minus_one(cx: &LateContext<'_>, expr: &Expr<'_>) { expr.span, "an exclusive range would be more readable", |diag| { - let start = start.map_or(String::new(), |x| Sugg::hir(cx, x, "x").maybe_par().to_string()); - let end = Sugg::hir(cx, y, "y").maybe_par(); + let start = start.map_or(String::new(), |x| Sugg::hir(cx, x, "x").maybe_paren().to_string()); + let end = Sugg::hir(cx, y, "y").maybe_paren(); diag.span_suggestion( expr.span, "use", diff --git a/clippy_lints/src/rc_clone_in_vec_init.rs b/clippy_lints/src/rc_clone_in_vec_init.rs index 6bb7650a7e1cf..689a2ac4c6aeb 100644 --- a/clippy_lints/src/rc_clone_in_vec_init.rs +++ b/clippy_lints/src/rc_clone_in_vec_init.rs @@ -1,14 +1,14 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::higher::VecArgs; -use clippy_utils::last_path_segment; use clippy_utils::macros::root_macro_call_first_node; use clippy_utils::source::{indent_of, snippet}; +use clippy_utils::{last_path_segment, sym}; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind, QPath, TyKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; use rustc_session::declare_lint_pass; -use rustc_span::{Span, Symbol, sym}; +use rustc_span::{Span, Symbol}; declare_clippy_lint! { /// ### What it does @@ -135,7 +135,7 @@ fn ref_init(cx: &LateContext<'_>, expr: &Expr<'_>) -> Option<(Symbol, Span)> { if let ty::Adt(adt, _) = *cx.typeck_results().expr_ty(expr).kind() && matches!(cx.tcx.get_diagnostic_name(adt.did()), Some(sym::RcWeak | sym::ArcWeak)) { - return Some((Symbol::intern("Weak"), func.span)); + return Some((sym::Weak, func.span)); } } diff --git a/clippy_lints/src/redundant_async_block.rs b/clippy_lints/src/redundant_async_block.rs index 8289ec47bc7e1..d2442ad0f373a 100644 --- a/clippy_lints/src/redundant_async_block.rs +++ b/clippy_lints/src/redundant_async_block.rs @@ -1,14 +1,9 @@ -use std::ops::ControlFlow; - use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::peel_blocks; use clippy_utils::source::{snippet, walk_span_to_context}; use clippy_utils::ty::implements_trait; -use clippy_utils::visitors::for_each_expr_without_closures; +use clippy_utils::{desugar_await, peel_blocks}; use rustc_errors::Applicability; -use rustc_hir::{ - Closure, ClosureKind, CoroutineDesugaring, CoroutineKind, CoroutineSource, Expr, ExprKind, MatchSource, -}; +use rustc_hir::{Closure, ClosureKind, CoroutineDesugaring, CoroutineKind, CoroutineSource, Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::UpvarCapture; use rustc_session::declare_lint_pass; @@ -99,20 +94,3 @@ fn desugar_async_block<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) -> Op None } } - -/// If `expr` is a desugared `.await`, return the original expression if it does not come from a -/// macro expansion. -fn desugar_await<'tcx>(expr: &'tcx Expr<'_>) -> Option<&'tcx Expr<'tcx>> { - if let ExprKind::Match(match_value, _, MatchSource::AwaitDesugar) = expr.kind - && let ExprKind::Call(_, [into_future_arg]) = match_value.kind - && let ctxt = expr.span.ctxt() - && for_each_expr_without_closures(into_future_arg, |e| { - walk_span_to_context(e.span, ctxt).map_or(ControlFlow::Break(()), |_| ControlFlow::Continue(())) - }) - .is_none() - { - Some(into_future_arg) - } else { - None - } -} diff --git a/clippy_lints/src/redundant_clone.rs b/clippy_lints/src/redundant_clone.rs index cfa622aea582f..e57b8cc2d84e3 100644 --- a/clippy_lints/src/redundant_clone.rs +++ b/clippy_lints/src/redundant_clone.rs @@ -109,10 +109,10 @@ impl<'tcx> LateLintPass<'tcx> for RedundantClone { continue; } - if let ty::Adt(def, _) = arg_ty.kind() { - if def.is_manually_drop() { - continue; - } + if let ty::Adt(def, _) = arg_ty.kind() + && def.is_manually_drop() + { + continue; } // `{ arg = &cloned; clone(move arg); }` or `{ arg = &cloned; to_path_buf(arg); }` @@ -182,20 +182,25 @@ impl<'tcx> LateLintPass<'tcx> for RedundantClone { let clone_usage = if local == ret_local { CloneUsage { - cloned_used: false, + cloned_use_loc: None.into(), cloned_consume_or_mutate_loc: None, clone_consumed_or_mutated: true, } } else { let clone_usage = visit_clone_usage(local, ret_local, mir, bb); - if clone_usage.cloned_used && clone_usage.clone_consumed_or_mutated { + if clone_usage.cloned_use_loc.maybe_used() && clone_usage.clone_consumed_or_mutated { // cloned value is used, and the clone is modified or moved continue; - } else if let Some(loc) = clone_usage.cloned_consume_or_mutate_loc { + } else if let MirLocalUsage::Used(loc) = clone_usage.cloned_use_loc + && possible_borrower.local_is_alive_at(ret_local, loc) + { + // cloned value is used, and the clone is alive. + continue; + } else if let Some(loc) = clone_usage.cloned_consume_or_mutate_loc // cloned value is mutated, and the clone is alive. - if possible_borrower.local_is_alive_at(ret_local, loc) { - continue; - } + && possible_borrower.local_is_alive_at(ret_local, loc) + { + continue; } clone_usage }; @@ -216,19 +221,18 @@ impl<'tcx> LateLintPass<'tcx> for RedundantClone { let call_snip = &snip[dot + 1..]; // Machine applicable when `call_snip` looks like `foobar()` - if let Some(call_snip) = call_snip.strip_suffix("()").map(str::trim) { - if call_snip + if let Some(call_snip) = call_snip.strip_suffix("()").map(str::trim) + && call_snip .as_bytes() .iter() .all(|b| b.is_ascii_alphabetic() || *b == b'_') - { - app = Applicability::MachineApplicable; - } + { + app = Applicability::MachineApplicable; } span_lint_hir_and_then(cx, REDUNDANT_CLONE, node, sugg_span, "redundant clone", |diag| { diag.span_suggestion(sugg_span, "remove this", "", app); - if clone_usage.cloned_used { + if clone_usage.cloned_use_loc.maybe_used() { diag.span_note(span, "cloned value is neither consumed nor mutated"); } else { diag.span_note( @@ -329,10 +333,33 @@ fn base_local_and_movability<'tcx>( (place.local, deref || field || slice) } -#[derive(Default)] +#[derive(Debug, Default)] +enum MirLocalUsage { + /// The local maybe used, but we are not sure how. + Unknown, + /// The local is not used. + #[default] + Unused, + /// The local is used at a specific location. + Used(mir::Location), +} + +impl MirLocalUsage { + fn maybe_used(&self) -> bool { + matches!(self, MirLocalUsage::Unknown | MirLocalUsage::Used(_)) + } +} + +impl From> for MirLocalUsage { + fn from(loc: Option) -> Self { + loc.map_or(MirLocalUsage::Unused, MirLocalUsage::Used) + } +} + +#[derive(Debug, Default)] struct CloneUsage { - /// Whether the cloned value is used after the clone. - cloned_used: bool, + /// The first location where the cloned value is used, if any. + cloned_use_loc: MirLocalUsage, /// The first location where the cloned value is consumed or mutated, if any. cloned_consume_or_mutate_loc: Option, /// Whether the clone value is mutated. @@ -360,7 +387,7 @@ fn visit_clone_usage(cloned: mir::Local, clone: mir::Local, mir: &mir::Body<'_>, .map(|mut vec| (vec.remove(0), vec.remove(0))) { CloneUsage { - cloned_used: !cloned_use_locs.is_empty(), + cloned_use_loc: cloned_use_locs.first().copied().into(), cloned_consume_or_mutate_loc: cloned_consume_or_mutate_locs.first().copied(), // Consider non-temporary clones consumed. // TODO: Actually check for mutation of non-temporaries. @@ -369,7 +396,7 @@ fn visit_clone_usage(cloned: mir::Local, clone: mir::Local, mir: &mir::Body<'_>, } } else { CloneUsage { - cloned_used: true, + cloned_use_loc: MirLocalUsage::Unknown, cloned_consume_or_mutate_loc: None, clone_consumed_or_mutated: true, } diff --git a/clippy_lints/src/redundant_closure_call.rs b/clippy_lints/src/redundant_closure_call.rs index 1498a49a7a4a9..84597269a58fa 100644 --- a/clippy_lints/src/redundant_closure_call.rs +++ b/clippy_lints/src/redundant_closure_call.rs @@ -206,7 +206,7 @@ impl<'tcx> LateLintPass<'tcx> for RedundantClosureCall { // avoid clippy::double_parens if !is_in_fn_call_arg { - hint = hint.maybe_par(); + hint = hint.maybe_paren(); } diag.span_suggestion(full_expr.span, "try doing something like", hint, applicability); diff --git a/clippy_lints/src/redundant_pub_crate.rs b/clippy_lints/src/redundant_pub_crate.rs index f2fdac5a8afaf..7b381fac5f118 100644 --- a/clippy_lints/src/redundant_pub_crate.rs +++ b/clippy_lints/src/redundant_pub_crate.rs @@ -52,13 +52,10 @@ impl<'tcx> LateLintPass<'tcx> for RedundantPubCrate { && is_not_macro_export(item) && !item.span.in_external_macro(cx.sess().source_map()) { - // FIXME: `DUMMY_SP` isn't right here, because it causes the - // resulting span to begin at the start of the file. - let span = item.span.with_hi( - item.kind - .ident() - .map_or(rustc_span::DUMMY_SP.hi(), |ident| ident.span.hi()), - ); + let span = item + .kind + .ident() + .map_or(item.span, |ident| item.span.with_hi(ident.span.hi())); let descr = cx.tcx.def_kind(item.owner_id).descr(item.owner_id.to_def_id()); span_lint_and_then( cx, diff --git a/clippy_lints/src/redundant_slicing.rs b/clippy_lints/src/redundant_slicing.rs index 7038b19d27596..1117dea703c2a 100644 --- a/clippy_lints/src/redundant_slicing.rs +++ b/clippy_lints/src/redundant_slicing.rs @@ -135,25 +135,24 @@ impl<'tcx> LateLintPass<'tcx> for RedundantSlicing { }; diag.span_suggestion(expr.span, help_msg, sugg, app); }); - } else if let Some(target_id) = cx.tcx.lang_items().deref_target() { - if let Ok(deref_ty) = cx.tcx.try_normalize_erasing_regions( + } else if let Some(target_id) = cx.tcx.lang_items().deref_target() + && let Ok(deref_ty) = cx.tcx.try_normalize_erasing_regions( cx.typing_env(), Ty::new_projection_from_args(cx.tcx, target_id, cx.tcx.mk_args(&[GenericArg::from(indexed_ty)])), - ) { - if deref_ty == expr_ty { - let (lint, msg) = DEREF_BY_SLICING_LINT; - span_lint_and_then(cx, lint, expr.span, msg, |diag| { - let mut app = Applicability::MachineApplicable; - let snip = snippet_with_context(cx, indexed.span, ctxt, "..", &mut app).0; - let sugg = if needs_parens_for_prefix { - format!("(&{}{}*{snip})", mutability.prefix_str(), "*".repeat(indexed_ref_count)) - } else { - format!("&{}{}*{snip}", mutability.prefix_str(), "*".repeat(indexed_ref_count)) - }; - diag.span_suggestion(expr.span, "dereference the original value instead", sugg, app); - }); - } - } + ) + && deref_ty == expr_ty + { + let (lint, msg) = DEREF_BY_SLICING_LINT; + span_lint_and_then(cx, lint, expr.span, msg, |diag| { + let mut app = Applicability::MachineApplicable; + let snip = snippet_with_context(cx, indexed.span, ctxt, "..", &mut app).0; + let sugg = if needs_parens_for_prefix { + format!("(&{}{}*{snip})", mutability.prefix_str(), "*".repeat(indexed_ref_count)) + } else { + format!("&{}{}*{snip}", mutability.prefix_str(), "*".repeat(indexed_ref_count)) + }; + diag.span_suggestion(expr.span, "dereference the original value instead", sugg, app); + }); } } } diff --git a/clippy_lints/src/redundant_test_prefix.rs b/clippy_lints/src/redundant_test_prefix.rs new file mode 100644 index 0000000000000..84276e3216573 --- /dev/null +++ b/clippy_lints/src/redundant_test_prefix.rs @@ -0,0 +1,161 @@ +use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::is_test_function; +use clippy_utils::visitors::for_each_expr; +use rustc_errors::Applicability; +use rustc_hir::intravisit::FnKind; +use rustc_hir::{self as hir, Body, ExprKind, FnDecl}; +use rustc_lexer::is_ident; +use rustc_lint::{LateContext, LateLintPass}; +use rustc_session::declare_lint_pass; +use rustc_span::def_id::LocalDefId; +use rustc_span::{Span, Symbol, edition}; +use std::borrow::Cow; +use std::ops::ControlFlow; + +declare_clippy_lint! { + /// ### What it does + /// Checks for test functions (functions annotated with `#[test]`) that are prefixed + /// with `test_` which is redundant. + /// + /// ### Why is this bad? + /// This is redundant because test functions are already annotated with `#[test]`. + /// Moreover, it clutters the output of `cargo test` since test functions are expanded as + /// `module::tests::test_use_case` in the output. Without the redundant prefix, the output + /// becomes `module::tests::use_case`, which is more readable. + /// + /// ### Example + /// ```no_run + /// #[cfg(test)] + /// mod tests { + /// use super::*; + /// + /// #[test] + /// fn test_use_case() { + /// // test code + /// } + /// } + /// ``` + /// Use instead: + /// ```no_run + /// #[cfg(test)] + /// mod tests { + /// use super::*; + /// + /// #[test] + /// fn use_case() { + /// // test code + /// } + /// } + /// ``` + #[clippy::version = "1.88.0"] + pub REDUNDANT_TEST_PREFIX, + restriction, + "redundant `test_` prefix in test function name" +} + +declare_lint_pass!(RedundantTestPrefix => [REDUNDANT_TEST_PREFIX]); + +impl<'tcx> LateLintPass<'tcx> for RedundantTestPrefix { + fn check_fn( + &mut self, + cx: &LateContext<'tcx>, + kind: FnKind<'_>, + _decl: &FnDecl<'_>, + body: &'tcx Body<'_>, + _span: Span, + fn_def_id: LocalDefId, + ) { + // Ignore methods and closures. + let FnKind::ItemFn(ref ident, ..) = kind else { + return; + }; + + // Skip the lint if the function is within a macro expansion. + if ident.span.from_expansion() { + return; + } + + // Skip if the function name does not start with `test_`. + if !ident.as_str().starts_with("test_") { + return; + } + + // If the function is not a test function, skip the lint. + if !is_test_function(cx.tcx, fn_def_id) { + return; + } + + span_lint_and_then( + cx, + REDUNDANT_TEST_PREFIX, + ident.span, + "redundant `test_` prefix in test function name", + |diag| { + let non_prefixed = Symbol::intern(ident.as_str().trim_start_matches("test_")); + if is_invalid_ident(non_prefixed) { + // If the prefix-trimmed name is not a valid function name, do not provide an + // automatic fix, just suggest renaming the function. + diag.help( + "consider function renaming (just removing `test_` prefix will produce invalid function name)", + ); + } else { + let (sugg, msg): (Cow<'_, str>, _) = if name_conflicts(cx, body, non_prefixed) { + // If `non_prefixed` conflicts with another function in the same module/scope, + // do not provide an automatic fix, but still emit a fix suggestion. + ( + format!("{non_prefixed}_works").into(), + "consider function renaming (just removing `test_` prefix will cause a name conflict)", + ) + } else { + // If `non_prefixed` is a valid identifier and does not conflict with another function, + // so we can suggest an auto-fix. + (non_prefixed.as_str().into(), "consider removing the `test_` prefix") + }; + diag.span_suggestion(ident.span, msg, sugg, Applicability::MaybeIncorrect); + } + }, + ); + } +} + +/// Checks whether removal of the `_test` prefix from the function name will cause a name conflict. +/// +/// There should be no other function with the same name in the same module/scope. Also, there +/// should not be any function call with the same name within the body of the function, to avoid +/// recursion. +fn name_conflicts<'tcx>(cx: &LateContext<'tcx>, body: &'tcx Body<'_>, fn_name: Symbol) -> bool { + let tcx = cx.tcx; + let id = body.id().hir_id; + + // Iterate over items in the same module/scope + let (module, _module_span, _module_hir) = tcx.hir_get_module(tcx.parent_module(id)); + if module + .item_ids + .iter() + .any(|item| matches!(tcx.hir_item(*item).kind, hir::ItemKind::Fn { ident, .. } if ident.name == fn_name)) + { + // Name conflict found + return true; + } + + // Also check that within the body of the function there is also no function call + // with the same name (since it will result in recursion) + for_each_expr(cx, body, |expr| { + if let ExprKind::Path(qpath) = &expr.kind + && let Some(def_id) = cx.qpath_res(qpath, expr.hir_id).opt_def_id() + && let Some(name) = tcx.opt_item_name(def_id) + && name == fn_name + { + // Function call with the same name found + ControlFlow::Break(()) + } else { + ControlFlow::Continue(()) + } + }) + .is_some() +} + +fn is_invalid_ident(ident: Symbol) -> bool { + // The identifier is either a reserved keyword, or starts with an invalid sequence. + ident.is_reserved(|| edition::LATEST_STABLE_EDITION) || !is_ident(ident.as_str()) +} diff --git a/clippy_lints/src/regex.rs b/clippy_lints/src/regex.rs index 9443dca154e33..834ff2af0e883 100644 --- a/clippy_lints/src/regex.rs +++ b/clippy_lints/src/regex.rs @@ -3,7 +3,7 @@ use std::fmt::Display; use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::{span_lint, span_lint_and_help}; use clippy_utils::source::SpanRangeExt; -use clippy_utils::{def_path_res_with_base, find_crates, path_def_id, paths}; +use clippy_utils::{def_path_res_with_base, find_crates, path_def_id, paths, sym}; use rustc_ast::ast::{LitKind, StrStyle}; use rustc_hir::def_id::DefIdMap; use rustc_hir::{BorrowKind, Expr, ExprKind, OwnerId}; @@ -76,7 +76,7 @@ declare_clippy_lint! { /// This is documented as an antipattern [on the regex documentation](https://docs.rs/regex/latest/regex/#avoid-re-compiling-regexes-especially-in-a-loop) /// /// ### Example - /// ```no_run + /// ```rust,ignore /// # let haystacks = [""]; /// # const MY_REGEX: &str = "a.b"; /// for haystack in haystacks { @@ -87,7 +87,7 @@ declare_clippy_lint! { /// } /// ``` /// can be replaced with - /// ```no_run + /// ```rust,ignore /// # let haystacks = [""]; /// # const MY_REGEX: &str = "a.b"; /// let regex = regex::Regex::new(MY_REGEX).unwrap(); @@ -126,7 +126,7 @@ impl<'tcx> LateLintPass<'tcx> for Regex { // // `def_path_res_with_base` will resolve through re-exports but is relatively heavy, so we only // perform the operation once and store the results - let regex_crates = find_crates(cx.tcx, sym!(regex)); + let regex_crates = find_crates(cx.tcx, sym::regex); let mut resolve = |path: &[&str], kind: RegexKind| { for res in def_path_res_with_base(cx.tcx, regex_crates.clone(), &path[1..]) { if let Some(id) = res.opt_def_id() { diff --git a/clippy_lints/src/same_name_method.rs b/clippy_lints/src/same_name_method.rs index 33815cc3bac1b..226e8ff6adbf5 100644 --- a/clippy_lints/src/same_name_method.rs +++ b/clippy_lints/src/same_name_method.rs @@ -3,6 +3,7 @@ use rustc_data_structures::fx::FxHashMap; use rustc_hir::def::{DefKind, Res}; use rustc_hir::{HirId, Impl, ItemKind, Node, Path, QPath, TraitRef, TyKind}; use rustc_lint::{LateContext, LateLintPass}; +use rustc_middle::ty::AssocItem; use rustc_session::declare_lint_pass; use rustc_span::Span; use rustc_span::symbol::Symbol; @@ -85,7 +86,7 @@ impl<'tcx> LateLintPass<'tcx> for SameNameMethod { .associated_items(did) .in_definition_order() .filter(|assoc_item| assoc_item.is_fn()) - .map(|assoc_item| assoc_item.name()) + .map(AssocItem::name) .collect() } else { BTreeSet::new() diff --git a/clippy_lints/src/serde_api.rs b/clippy_lints/src/serde_api.rs index 6a0dfde2d9c9c..a8c6518b592ba 100644 --- a/clippy_lints/src/serde_api.rs +++ b/clippy_lints/src/serde_api.rs @@ -32,28 +32,28 @@ impl<'tcx> LateLintPass<'tcx> for SerdeApi { }) = item.kind { let did = trait_ref.path.res.def_id(); - if let Some(visit_did) = get_trait_def_id(cx.tcx, &paths::SERDE_DE_VISITOR) { - if did == visit_did { - let mut seen_str = None; - let mut seen_string = None; - for item in *items { - match item.ident.as_str() { - "visit_str" => seen_str = Some(item.span), - "visit_string" => seen_string = Some(item.span), - _ => {}, - } - } - if let Some(span) = seen_string { - if seen_str.is_none() { - span_lint( - cx, - SERDE_API_MISUSE, - span, - "you should not implement `visit_string` without also implementing `visit_str`", - ); - } + if let Some(visit_did) = get_trait_def_id(cx.tcx, &paths::SERDE_DE_VISITOR) + && did == visit_did + { + let mut seen_str = None; + let mut seen_string = None; + for item in *items { + match item.ident.as_str() { + "visit_str" => seen_str = Some(item.span), + "visit_string" => seen_string = Some(item.span), + _ => {}, } } + if let Some(span) = seen_string + && seen_str.is_none() + { + span_lint( + cx, + SERDE_API_MISUSE, + span, + "you should not implement `visit_string` without also implementing `visit_str`", + ); + } } } } diff --git a/clippy_lints/src/set_contains_or_insert.rs b/clippy_lints/src/set_contains_or_insert.rs index 1185d67b1258b..ff6e6ef214b5b 100644 --- a/clippy_lints/src/set_contains_or_insert.rs +++ b/clippy_lints/src/set_contains_or_insert.rs @@ -3,12 +3,12 @@ use std::ops::ControlFlow; use clippy_utils::diagnostics::span_lint; use clippy_utils::ty::is_type_diagnostic_item; use clippy_utils::visitors::for_each_expr; -use clippy_utils::{SpanlessEq, higher, peel_hir_expr_while}; +use clippy_utils::{SpanlessEq, higher, peel_hir_expr_while, sym}; use rustc_hir::{Expr, ExprKind, UnOp}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; +use rustc_span::Span; use rustc_span::symbol::Symbol; -use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does @@ -58,7 +58,7 @@ impl<'tcx> LateLintPass<'tcx> for SetContainsOrInsert { then: then_expr, .. }) = higher::If::hir(expr) - && let Some((contains_expr, sym)) = try_parse_op_call(cx, cond_expr, sym!(contains))//try_parse_contains(cx, cond_expr) + && let Some((contains_expr, sym)) = try_parse_op_call(cx, cond_expr, sym::contains)//try_parse_contains(cx, cond_expr) && let Some(insert_expr) = find_insert_calls(cx, &contains_expr, then_expr) { span_lint( @@ -118,7 +118,7 @@ fn find_insert_calls<'tcx>( expr: &'tcx Expr<'_>, ) -> Option> { for_each_expr(cx, expr, |e| { - if let Some((insert_expr, _)) = try_parse_op_call(cx, e, sym!(insert)) + if let Some((insert_expr, _)) = try_parse_op_call(cx, e, sym::insert) && SpanlessEq::new(cx).eq_expr(contains_expr.receiver, insert_expr.receiver) && SpanlessEq::new(cx).eq_expr(contains_expr.value, insert_expr.value) { diff --git a/clippy_lints/src/shadow.rs b/clippy_lints/src/shadow.rs index b82ddedd56c0a..14399867f3181 100644 --- a/clippy_lints/src/shadow.rs +++ b/clippy_lints/src/shadow.rs @@ -8,7 +8,9 @@ use rustc_data_structures::fx::FxHashMap; use rustc_hir::def::Res; use rustc_hir::def_id::LocalDefId; use rustc_hir::hir_id::ItemLocalId; -use rustc_hir::{Block, Body, BodyOwnerKind, Expr, ExprKind, HirId, LetExpr, Node, Pat, PatKind, QPath, UnOp}; +use rustc_hir::{ + Block, Body, BodyOwnerKind, Expr, ExprKind, HirId, LetExpr, LocalSource, Node, Pat, PatKind, QPath, UnOp, +}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::impl_lint_pass; use rustc_span::{Span, Symbol}; @@ -65,7 +67,7 @@ declare_clippy_lint! { #[clippy::version = "pre 1.29.0"] pub SHADOW_REUSE, restriction, - "rebinding a name to an expression that re-uses the original value, e.g., `let x = x + 1`" + "rebinding a name to an expression that reuses the original value, e.g., `let x = x + 1`" } declare_clippy_lint! { @@ -125,6 +127,17 @@ impl<'tcx> LateLintPass<'tcx> for Shadow { return; } + // Desugaring of a destructuring assignment may reuse the same identifier internally. + // Peel `Pat` and `PatField` nodes and check if we reach a desugared `Let` assignment. + if let Some((_, Node::LetStmt(let_stmt))) = cx + .tcx + .hir_parent_iter(pat.hir_id) + .find(|(_, node)| !matches!(node, Node::Pat(_) | Node::PatField(_))) + && let LocalSource::AssignDesugar(_) = let_stmt.source + { + return; + } + let HirId { owner, local_id } = id; // get (or insert) the list of items for this owner and symbol let (ref mut data, scope_owner) = *self.bindings.last_mut().unwrap(); @@ -167,10 +180,10 @@ impl<'tcx> LateLintPass<'tcx> for Shadow { fn is_shadow(cx: &LateContext<'_>, owner: LocalDefId, first: ItemLocalId, second: ItemLocalId) -> bool { let scope_tree = cx.tcx.region_scope_tree(owner.to_def_id()); - if let Some(first_scope) = scope_tree.var_scope(first) { - if let Some(second_scope) = scope_tree.var_scope(second) { - return scope_tree.is_subscope_of(second_scope, first_scope); - } + if let Some(first_scope) = scope_tree.var_scope(first) + && let Some(second_scope) = scope_tree.var_scope(second) + { + return scope_tree.is_subscope_of(second_scope, first_scope); } false diff --git a/clippy_lints/src/significant_drop_tightening.rs b/clippy_lints/src/significant_drop_tightening.rs index 76874cc342066..ccb1209c6fcbe 100644 --- a/clippy_lints/src/significant_drop_tightening.rs +++ b/clippy_lints/src/significant_drop_tightening.rs @@ -124,8 +124,7 @@ impl<'tcx> LateLintPass<'tcx> for SignificantDropTightening<'tcx> { diag.span_label( apa.first_block_span, format!( - "temporary `{}` is currently being dropped at the end of its contained scope", - first_bind_ident + "temporary `{first_bind_ident}` is currently being dropped at the end of its contained scope" ), ); }, @@ -145,7 +144,10 @@ impl<'cx, 'others, 'tcx> AttrChecker<'cx, 'others, 'tcx> { Self { cx, type_cache } } - fn has_sig_drop_attr(&mut self, ty: Ty<'tcx>) -> bool { + fn has_sig_drop_attr(&mut self, ty: Ty<'tcx>, depth: usize) -> bool { + if !self.cx.tcx.recursion_limit().value_within_limit(depth) { + return false; + } let ty = self .cx .tcx @@ -157,12 +159,12 @@ impl<'cx, 'others, 'tcx> AttrChecker<'cx, 'others, 'tcx> { e.insert(false); }, } - let value = self.has_sig_drop_attr_uncached(ty); + let value = self.has_sig_drop_attr_uncached(ty, depth + 1); self.type_cache.insert(ty, value); value } - fn has_sig_drop_attr_uncached(&mut self, ty: Ty<'tcx>) -> bool { + fn has_sig_drop_attr_uncached(&mut self, ty: Ty<'tcx>, depth: usize) -> bool { if let Some(adt) = ty.ty_adt_def() { let mut iter = get_attr( self.cx.sess(), @@ -177,15 +179,15 @@ impl<'cx, 'others, 'tcx> AttrChecker<'cx, 'others, 'tcx> { rustc_middle::ty::Adt(a, b) => { for f in a.all_fields() { let ty = f.ty(self.cx.tcx, b); - if self.has_sig_drop_attr(ty) { + if self.has_sig_drop_attr(ty, depth) { return true; } } for generic_arg in *b { - if let GenericArgKind::Type(ty) = generic_arg.unpack() { - if self.has_sig_drop_attr(ty) { - return true; - } + if let GenericArgKind::Type(ty) = generic_arg.unpack() + && self.has_sig_drop_attr(ty, depth) + { + return true; } } false @@ -193,7 +195,7 @@ impl<'cx, 'others, 'tcx> AttrChecker<'cx, 'others, 'tcx> { rustc_middle::ty::Array(ty, _) | rustc_middle::ty::RawPtr(ty, _) | rustc_middle::ty::Ref(_, ty, _) - | rustc_middle::ty::Slice(ty) => self.has_sig_drop_attr(*ty), + | rustc_middle::ty::Slice(ty) => self.has_sig_drop_attr(*ty, depth), _ => false, } } @@ -269,7 +271,7 @@ impl<'tcx> Visitor<'tcx> for StmtsChecker<'_, '_, '_, '_, 'tcx> { apa.has_expensive_expr_after_last_attr = false; }; let mut ac = AttrChecker::new(self.cx, self.type_cache); - if ac.has_sig_drop_attr(self.cx.typeck_results().expr_ty(expr)) { + if ac.has_sig_drop_attr(self.cx.typeck_results().expr_ty(expr), 0) { if let hir::StmtKind::Let(local) = self.ap.curr_stmt.kind && let hir::PatKind::Binding(_, hir_id, ident, _) = local.pat.kind && !self.ap.apas.contains_key(&hir_id) @@ -317,7 +319,7 @@ impl<'tcx> Visitor<'tcx> for StmtsChecker<'_, '_, '_, '_, 'tcx> { } }, hir::StmtKind::Semi(semi_expr) => { - if has_drop(semi_expr, &apa.first_bind_ident, self.cx) { + if has_drop(semi_expr, apa.first_bind_ident, self.cx) { apa.has_expensive_expr_after_last_attr = false; apa.last_stmt_span = DUMMY_SP; return; @@ -414,7 +416,7 @@ fn dummy_stmt_expr<'any>(expr: &'any hir::Expr<'any>) -> hir::Stmt<'any> { } } -fn has_drop(expr: &hir::Expr<'_>, first_bind_ident: &Option, lcx: &LateContext<'_>) -> bool { +fn has_drop(expr: &hir::Expr<'_>, first_bind_ident: Option, lcx: &LateContext<'_>) -> bool { if let hir::ExprKind::Call(fun, [first_arg]) = expr.kind && let hir::ExprKind::Path(hir::QPath::Resolved(_, fun_path)) = &fun.kind && let Res::Def(DefKind::Fn, did) = fun_path.res @@ -424,7 +426,7 @@ fn has_drop(expr: &hir::Expr<'_>, first_bind_ident: &Option, lcx: &LateCo if let hir::ExprKind::Path(hir::QPath::Resolved(_, arg_path)) = &local_expr.kind && let [first_arg_ps, ..] = arg_path.segments && let Some(first_bind_ident) = first_bind_ident - && &first_arg_ps.ident == first_bind_ident + && first_arg_ps.ident == first_bind_ident { true } else { diff --git a/clippy_lints/src/single_char_lifetime_names.rs b/clippy_lints/src/single_char_lifetime_names.rs index 50a6ee316c8a6..8c34da0d14a4d 100644 --- a/clippy_lints/src/single_char_lifetime_names.rs +++ b/clippy_lints/src/single_char_lifetime_names.rs @@ -45,19 +45,20 @@ impl EarlyLintPass for SingleCharLifetimeNames { return; } - if let GenericParamKind::Lifetime = param.kind { - if !param.is_placeholder && param.ident.as_str().len() <= 2 { - #[expect(clippy::collapsible_span_lint_calls, reason = "rust-clippy#7797")] - span_lint_and_then( - ctx, - SINGLE_CHAR_LIFETIME_NAMES, - param.ident.span, - "single-character lifetime names are likely uninformative", - |diag| { - diag.help("use a more informative name"); - }, - ); - } + if let GenericParamKind::Lifetime = param.kind + && !param.is_placeholder + && param.ident.as_str().len() <= 2 + { + #[expect(clippy::collapsible_span_lint_calls, reason = "rust-clippy#7797")] + span_lint_and_then( + ctx, + SINGLE_CHAR_LIFETIME_NAMES, + param.ident.span, + "single-character lifetime names are likely uninformative", + |diag| { + diag.help("use a more informative name"); + }, + ); } } } diff --git a/clippy_lints/src/single_component_path_imports.rs b/clippy_lints/src/single_component_path_imports.rs index 35f80b2acda68..62939912304ba 100644 --- a/clippy_lints/src/single_component_path_imports.rs +++ b/clippy_lints/src/single_component_path_imports.rs @@ -204,17 +204,17 @@ impl SingleComponentPathImports { if let UseTreeKind::Nested { items, .. } = &use_tree.kind { for tree in items { let segments = &tree.0.prefix.segments; - if segments.len() == 1 { - if let UseTreeKind::Simple(None) = tree.0.kind { - let name = segments[0].ident.name; - if !macros.contains(&name) { - single_use_usages.push(SingleUse { - name, - span: tree.0.span, - item_id: item.id, - can_suggest: false, - }); - } + if segments.len() == 1 + && let UseTreeKind::Simple(None) = tree.0.kind + { + let name = segments[0].ident.name; + if !macros.contains(&name) { + single_use_usages.push(SingleUse { + name, + span: tree.0.span, + item_id: item.id, + can_suggest: false, + }); } } } diff --git a/clippy_lints/src/strings.rs b/clippy_lints/src/strings.rs index 27c548bed9f64..43a3e69610513 100644 --- a/clippy_lints/src/strings.rs +++ b/clippy_lints/src/strings.rs @@ -3,7 +3,7 @@ use clippy_utils::source::{snippet, snippet_with_applicability}; use clippy_utils::ty::is_type_lang_item; use clippy_utils::{ SpanlessEq, get_expr_use_or_unification_node, get_parent_expr, is_lint_allowed, method_calls, path_def_id, - peel_blocks, + peel_blocks, sym, }; use rustc_errors::Applicability; use rustc_hir::def_id::DefId; @@ -12,7 +12,6 @@ use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::ty; use rustc_session::declare_lint_pass; use rustc_span::source_map::Spanned; -use rustc_span::sym; use std::ops::ControlFlow; @@ -162,13 +161,12 @@ impl<'tcx> LateLintPass<'tcx> for StringAdd { if is_string(cx, left) { if !is_lint_allowed(cx, STRING_ADD_ASSIGN, e.hir_id) { let parent = get_parent_expr(cx, e); - if let Some(p) = parent { - if let ExprKind::Assign(target, _, _) = p.kind { + if let Some(p) = parent + && let ExprKind::Assign(target, _, _) = p.kind // avoid duplicate matches - if SpanlessEq::new(cx).eq_expr(target, left) { - return; - } - } + && SpanlessEq::new(cx).eq_expr(target, left) + { + return; } } span_lint( @@ -263,7 +261,7 @@ impl<'tcx> LateLintPass<'tcx> for StringLitAsBytes { && let ExprKind::AddrOf(BorrowKind::Ref, _, args) = bytes_arg.kind && let ExprKind::Index(left, right, _) = args.kind && let (method_names, expressions, _) = method_calls(left, 1) - && method_names == [sym!(as_bytes)] + && method_names == [sym::as_bytes] && expressions.len() == 1 && expressions[0].1.is_empty() diff --git a/clippy_lints/src/suspicious_trait_impl.rs b/clippy_lints/src/suspicious_trait_impl.rs index 56bd8fefdb459..83241f97a99ac 100644 --- a/clippy_lints/src/suspicious_trait_impl.rs +++ b/clippy_lints/src/suspicious_trait_impl.rs @@ -59,25 +59,18 @@ impl<'tcx> LateLintPass<'tcx> for SuspiciousImpl { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'_>) { match expr.kind { hir::ExprKind::Binary(op, _, _) => { - self.check_expr_inner(cx, expr, op.node, op.span); - } + check_expr_inner(cx, expr, op.node, op.span); + }, hir::ExprKind::AssignOp(op, _, _) => { - self.check_expr_inner(cx, expr, op.node.into(), op.span); - } - _ => {} + check_expr_inner(cx, expr, op.node.into(), op.span); + }, + _ => {}, } } } -impl<'tcx> SuspiciousImpl { - fn check_expr_inner( - &mut self, - cx: &LateContext<'tcx>, - expr: &'tcx hir::Expr<'_>, - binop: hir::BinOpKind, - span: Span, - ) { - if let Some((binop_trait_lang, op_assign_trait_lang)) = binop_traits(binop) +fn check_expr_inner<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'_>, binop: hir::BinOpKind, span: Span) { + if let Some((binop_trait_lang, op_assign_trait_lang)) = binop_traits(binop) && let Some(binop_trait_id) = cx.tcx.lang_items().get(binop_trait_lang) && let Some(op_assign_trait_id) = cx.tcx.lang_items().get(op_assign_trait_lang) @@ -98,18 +91,17 @@ impl<'tcx> SuspiciousImpl { .iter() .find(|&(ts, _)| ts.iter().any(|&t| Some(trait_id) == cx.tcx.lang_items().get(t))) && count_binops(body.value) == 1 - { - span_lint( - cx, - lint, - span, - format!( - "suspicious use of `{}` in `{}` impl", - binop.as_str(), - cx.tcx.item_name(trait_id) - ), - ); - } + { + span_lint( + cx, + lint, + span, + format!( + "suspicious use of `{}` in `{}` impl", + binop.as_str(), + cx.tcx.item_name(trait_id) + ), + ); } } diff --git a/clippy_lints/src/swap.rs b/clippy_lints/src/swap.rs index 0337b74b4b124..e3ecd6508bf9a 100644 --- a/clippy_lints/src/swap.rs +++ b/clippy_lints/src/swap.rs @@ -133,7 +133,7 @@ fn generate_swap_warning<'tcx>( applicability: &mut applicability, } .snippet_index_bindings(&[idx1, idx2, rhs1, rhs2]), - slice.maybe_par(), + slice.maybe_paren(), snippet_with_context(cx, idx1.span, ctxt, "..", &mut applicability).0, snippet_with_context(cx, idx2.span, ctxt, "..", &mut applicability).0, ), @@ -269,12 +269,11 @@ fn parse<'a, 'hir>(stmt: &'a Stmt<'hir>) -> Option<(ExprOrIdent<'hir>, &'a Expr< if let ExprKind::Assign(lhs, rhs, _) = expr.kind { return Some((ExprOrIdent::Expr(lhs), rhs)); } - } else if let StmtKind::Let(expr) = stmt.kind { - if let Some(rhs) = expr.init { - if let PatKind::Binding(_, _, ident_l, _) = expr.pat.kind { - return Some((ExprOrIdent::Ident(ident_l), rhs)); - } - } + } else if let StmtKind::Let(expr) = stmt.kind + && let Some(rhs) = expr.init + && let PatKind::Binding(_, _, ident_l, _) = expr.pat.kind + { + return Some((ExprOrIdent::Ident(ident_l), rhs)); } None } diff --git a/clippy_lints/src/trait_bounds.rs b/clippy_lints/src/trait_bounds.rs index fa36c9a21f65e..8aac3a5910294 100644 --- a/clippy_lints/src/trait_bounds.rs +++ b/clippy_lints/src/trait_bounds.rs @@ -151,20 +151,19 @@ impl<'tcx> LateLintPass<'tcx> for TraitBounds { .iter() .filter_map(get_trait_info_from_bound) .for_each(|(trait_item_res, trait_item_segments, span)| { - if let Some(self_segments) = self_bounds_map.get(&trait_item_res) { - if SpanlessEq::new(cx) + if let Some(self_segments) = self_bounds_map.get(&trait_item_res) + && SpanlessEq::new(cx) .paths_by_resolution() .eq_path_segments(self_segments, trait_item_segments) - { - span_lint_and_help( - cx, - TRAIT_DUPLICATION_IN_BOUNDS, - span, - "this trait bound is already specified in trait declaration", - None, - "consider removing this trait bound", - ); - } + { + span_lint_and_help( + cx, + TRAIT_DUPLICATION_IN_BOUNDS, + span, + "this trait bound is already specified in trait declaration", + None, + "consider removing this trait bound", + ); } }); } diff --git a/clippy_lints/src/transmute/transmute_float_to_int.rs b/clippy_lints/src/transmute/transmute_float_to_int.rs index f2c757952af38..df2f681a16291 100644 --- a/clippy_lints/src/transmute/transmute_float_to_int.rs +++ b/clippy_lints/src/transmute/transmute_float_to_int.rs @@ -47,7 +47,7 @@ pub(super) fn check<'tcx>( } } - sugg = sugg::Sugg::NonParen(format!("{}.to_bits()", sugg.maybe_par()).into()); + sugg = sugg::Sugg::NonParen(format!("{}.to_bits()", sugg.maybe_paren()).into()); // cast the result of `to_bits` if `to_ty` is signed sugg = if let ty::Int(int_ty) = to_ty.kind() { diff --git a/clippy_lints/src/transmute/transmute_ptr_to_ptr.rs b/clippy_lints/src/transmute/transmute_ptr_to_ptr.rs index fcc763763bd2f..933e25fe98c65 100644 --- a/clippy_lints/src/transmute/transmute_ptr_to_ptr.rs +++ b/clippy_lints/src/transmute/transmute_ptr_to_ptr.rs @@ -33,7 +33,7 @@ pub(super) fn check<'tcx>( diag.span_suggestion_verbose( e.span, "use `pointer::cast` instead", - format!("{}.cast::<{to_pointee_ty}>()", arg.maybe_par()), + format!("{}.cast::<{to_pointee_ty}>()", arg.maybe_paren()), Applicability::MaybeIncorrect, ); } else if from_pointee_ty == to_pointee_ty @@ -48,7 +48,7 @@ pub(super) fn check<'tcx>( diag.span_suggestion_verbose( e.span, format!("use `pointer::{method}` instead"), - format!("{}.{method}()", arg.maybe_par()), + format!("{}.{method}()", arg.maybe_paren()), Applicability::MaybeIncorrect, ); } else { diff --git a/clippy_lints/src/transmute/transmute_ptr_to_ref.rs b/clippy_lints/src/transmute/transmute_ptr_to_ref.rs index 45ee83c78ab67..e58212fae15cf 100644 --- a/clippy_lints/src/transmute/transmute_ptr_to_ref.rs +++ b/clippy_lints/src/transmute/transmute_ptr_to_ref.rs @@ -38,7 +38,7 @@ pub(super) fn check<'tcx>( let sugg = if let Some(ty) = get_explicit_type(path) { let ty_snip = snippet_with_applicability(cx, ty.span, "..", &mut app); if msrv.meets(cx, msrvs::POINTER_CAST) { - format!("{deref}{}.cast::<{ty_snip}>()", arg.maybe_par()) + format!("{deref}{}.cast::<{ty_snip}>()", arg.maybe_paren()) } else if from_ptr_ty.has_erased_regions() { sugg::make_unop(deref, arg.as_ty(format!("{cast} () as {cast} {ty_snip}"))).to_string() } else { @@ -47,7 +47,7 @@ pub(super) fn check<'tcx>( } else if *from_ptr_ty == *to_ref_ty { if from_ptr_ty.has_erased_regions() { if msrv.meets(cx, msrvs::POINTER_CAST) { - format!("{deref}{}.cast::<{to_ref_ty}>()", arg.maybe_par()) + format!("{deref}{}.cast::<{to_ref_ty}>()", arg.maybe_paren()) } else { sugg::make_unop(deref, arg.as_ty(format!("{cast} () as {cast} {to_ref_ty}"))) .to_string() diff --git a/clippy_lints/src/types/mod.rs b/clippy_lints/src/types/mod.rs index b6f4c4d7f0a41..3147058b4cda0 100644 --- a/clippy_lints/src/types/mod.rs +++ b/clippy_lints/src/types/mod.rs @@ -591,26 +591,26 @@ impl Types { TyKind::Path(ref qpath) if !context.in_body => { let hir_id = hir_ty.hir_id; let res = cx.qpath_res(qpath, hir_id); - if let Some(def_id) = res.opt_def_id() { - if self.is_type_change_allowed(context) { - // All lints that are being checked in this block are guarded by - // the `avoid_breaking_exported_api` configuration. When adding a - // new lint, please also add the name to the configuration documentation - // in `clippy_config::conf` - - let mut triggered = false; - triggered |= box_collection::check(cx, hir_ty, qpath, def_id); - triggered |= redundant_allocation::check(cx, hir_ty, qpath, def_id); - triggered |= rc_buffer::check(cx, hir_ty, qpath, def_id); - triggered |= vec_box::check(cx, hir_ty, qpath, def_id, self.vec_box_size_threshold); - triggered |= option_option::check(cx, hir_ty, qpath, def_id); - triggered |= linked_list::check(cx, hir_ty, def_id); - triggered |= rc_mutex::check(cx, hir_ty, qpath, def_id); - triggered |= owned_cow::check(cx, qpath, def_id); - - if triggered { - return; - } + if let Some(def_id) = res.opt_def_id() + && self.is_type_change_allowed(context) + { + // All lints that are being checked in this block are guarded by + // the `avoid_breaking_exported_api` configuration. When adding a + // new lint, please also add the name to the configuration documentation + // in `clippy_config::conf` + + let mut triggered = false; + triggered |= box_collection::check(cx, hir_ty, qpath, def_id); + triggered |= redundant_allocation::check(cx, hir_ty, qpath, def_id); + triggered |= rc_buffer::check(cx, hir_ty, qpath, def_id); + triggered |= vec_box::check(cx, hir_ty, qpath, def_id, self.vec_box_size_threshold); + triggered |= option_option::check(cx, hir_ty, qpath, def_id); + triggered |= linked_list::check(cx, hir_ty, def_id); + triggered |= rc_mutex::check(cx, hir_ty, qpath, def_id); + triggered |= owned_cow::check(cx, qpath, def_id); + + if triggered { + return; } } match *qpath { diff --git a/clippy_lints/src/unconditional_recursion.rs b/clippy_lints/src/unconditional_recursion.rs index 0c17cc5d8f667..d321c48f6aff8 100644 --- a/clippy_lints/src/unconditional_recursion.rs +++ b/clippy_lints/src/unconditional_recursion.rs @@ -23,8 +23,8 @@ declare_clippy_lint! { /// implementations. /// /// ### Why is this bad? - /// This is a hard to find infinite recursion that will crash any code - /// using it. + /// Infinite recursion in trait implementation will either cause crashes + /// or result in an infinite loop, and it is hard to detect. /// /// ### Example /// ```no_run @@ -39,9 +39,31 @@ declare_clippy_lint! { /// } /// } /// ``` + /// /// Use instead: /// - /// In such cases, either use `#[derive(PartialEq)]` or don't implement it. + /// ```no_run + /// #[derive(PartialEq)] + /// enum Foo { + /// A, + /// B, + /// } + /// ``` + /// + /// As an alternative, rewrite the logic without recursion: + /// + /// ```no_run + /// enum Foo { + /// A, + /// B, + /// } + /// + /// impl PartialEq for Foo { + /// fn eq(&self, other: &Self) -> bool { + /// matches!((self, other), (Foo::A, Foo::A) | (Foo::B, Foo::B)) + /// } + /// } + /// ``` #[clippy::version = "1.77.0"] pub UNCONDITIONAL_RECURSION, suspicious, @@ -113,7 +135,7 @@ fn get_impl_trait_def_id(cx: &LateContext<'_>, method_def_id: LocalDefId) -> Opt }), )) = cx.tcx.hir_parent_iter(hir_id).next() // We exclude `impl` blocks generated from rustc's proc macros. - && !cx.tcx.has_attr(*owner_id, sym::automatically_derived) + && !cx.tcx.is_automatically_derived(owner_id.to_def_id()) // It is a implementation of a trait. && let Some(trait_) = impl_.of_trait { @@ -218,7 +240,7 @@ fn check_to_string(cx: &LateContext<'_>, method_span: Span, method_def_id: Local }), )) = cx.tcx.hir_parent_iter(hir_id).next() // We exclude `impl` blocks generated from rustc's proc macros. - && !cx.tcx.has_attr(*owner_id, sym::automatically_derived) + && !cx.tcx.is_automatically_derived(owner_id.to_def_id()) // It is a implementation of a trait. && let Some(trait_) = impl_.of_trait && let Some(trait_def_id) = trait_.trait_def_id() @@ -315,7 +337,7 @@ impl UnconditionalRecursion { for (ty, impl_def_ids) in impls.non_blanket_impls() { let Some(self_def_id) = ty.def() else { continue }; for impl_def_id in impl_def_ids { - if !cx.tcx.has_attr(*impl_def_id, sym::automatically_derived) && + if !cx.tcx.is_automatically_derived(*impl_def_id) && let Some(assoc_item) = cx .tcx .associated_items(impl_def_id) diff --git a/clippy_lints/src/unicode.rs b/clippy_lints/src/unicode.rs index e1fc644e4ceeb..79571b0409d21 100644 --- a/clippy_lints/src/unicode.rs +++ b/clippy_lints/src/unicode.rs @@ -76,10 +76,10 @@ declare_lint_pass!(Unicode => [INVISIBLE_CHARACTERS, NON_ASCII_LITERAL, UNICODE_ impl LateLintPass<'_> for Unicode { fn check_expr(&mut self, cx: &LateContext<'_>, expr: &'_ Expr<'_>) { - if let ExprKind::Lit(lit) = expr.kind { - if let LitKind::Str(_, _) | LitKind::Char(_) = lit.node { - check_str(cx, lit.span, expr.hir_id); - } + if let ExprKind::Lit(lit) = expr.kind + && let LitKind::Str(_, _) | LitKind::Char(_) = lit.node + { + check_str(cx, lit.span, expr.hir_id); } } } diff --git a/clippy_lints/src/unnecessary_wraps.rs b/clippy_lints/src/unnecessary_wraps.rs index 937e35dea96d9..bcd05cceca9c3 100644 --- a/clippy_lints/src/unnecessary_wraps.rs +++ b/clippy_lints/src/unnecessary_wraps.rs @@ -93,13 +93,13 @@ impl<'tcx> LateLintPass<'tcx> for UnnecessaryWraps { // Abort if the method is implementing a trait or of it a trait method. let hir_id = cx.tcx.local_def_id_to_hir_id(def_id); - if let Node::Item(item) = cx.tcx.parent_hir_node(hir_id) { - if matches!( + if let Node::Item(item) = cx.tcx.parent_hir_node(hir_id) + && matches!( item.kind, ItemKind::Impl(Impl { of_trait: Some(_), .. }) | ItemKind::Trait(..) - ) { - return; - } + ) + { + return; } // Get the wrapper and inner types, if can't, abort. diff --git a/clippy_lints/src/unnested_or_patterns.rs b/clippy_lints/src/unnested_or_patterns.rs index 8966e6851ac2f..9ad184450de43 100644 --- a/clippy_lints/src/unnested_or_patterns.rs +++ b/clippy_lints/src/unnested_or_patterns.rs @@ -69,10 +69,10 @@ impl EarlyLintPass for UnnestedOrPatterns { } fn check_expr(&mut self, cx: &EarlyContext<'_>, e: &ast::Expr) { - if self.msrv.meets(msrvs::OR_PATTERNS) { - if let ast::ExprKind::Let(pat, _, _, _) = &e.kind { - lint_unnested_or_patterns(cx, pat); - } + if self.msrv.meets(msrvs::OR_PATTERNS) + && let ast::ExprKind::Let(pat, _, _, _) = &e.kind + { + lint_unnested_or_patterns(cx, pat); } } @@ -120,18 +120,25 @@ fn lint_unnested_or_patterns(cx: &EarlyContext<'_>, pat: &Pat) { /// Remove all `(p)` patterns in `pat`. fn remove_all_parens(pat: &mut P) { - struct Visitor; + #[derive(Default)] + struct Visitor { + /// If is not in the outer most pattern. This is needed to avoid removing the outermost + /// parens because top-level or-patterns are not allowed in let statements. + is_inner: bool, + } + impl MutVisitor for Visitor { fn visit_pat(&mut self, pat: &mut P) { + let is_inner = mem::replace(&mut self.is_inner, true); walk_pat(self, pat); let inner = match &mut pat.kind { - Paren(i) => mem::replace(&mut i.kind, Wild), + Paren(i) if is_inner => mem::replace(&mut i.kind, Wild), _ => return, }; pat.kind = inner; } } - Visitor.visit_pat(pat); + Visitor::default().visit_pat(pat); } /// Insert parens where necessary according to Rust's precedence rules for patterns. diff --git a/clippy_lints/src/unused_io_amount.rs b/clippy_lints/src/unused_io_amount.rs index 0687fc319af68..2d88c490b1abe 100644 --- a/clippy_lints/src/unused_io_amount.rs +++ b/clippy_lints/src/unused_io_amount.rs @@ -265,15 +265,14 @@ fn unpack_match<'a>(mut expr: &'a hir::Expr<'a>) -> &'a hir::Expr<'a> { /// If `expr` is an (e).await, return the inner expression "e" that's being /// waited on. Otherwise return None. fn unpack_await<'a>(expr: &'a hir::Expr<'a>) -> &'a hir::Expr<'a> { - if let ExprKind::Match(expr, _, hir::MatchSource::AwaitDesugar) = expr.kind { - if let ExprKind::Call(func, [arg_0]) = expr.kind { - if matches!( - func.kind, - ExprKind::Path(hir::QPath::LangItem(hir::LangItem::IntoFutureIntoFuture, ..)) - ) { - return arg_0; - } - } + if let ExprKind::Match(expr, _, hir::MatchSource::AwaitDesugar) = expr.kind + && let ExprKind::Call(func, [arg_0]) = expr.kind + && matches!( + func.kind, + ExprKind::Path(hir::QPath::LangItem(hir::LangItem::IntoFutureIntoFuture, ..)) + ) + { + return arg_0; } expr } diff --git a/clippy_lints/src/unwrap.rs b/clippy_lints/src/unwrap.rs index b466a8e127a94..ce82b56eb946f 100644 --- a/clippy_lints/src/unwrap.rs +++ b/clippy_lints/src/unwrap.rs @@ -1,7 +1,7 @@ use clippy_utils::diagnostics::span_lint_hir_and_then; use clippy_utils::ty::is_type_diagnostic_item; use clippy_utils::usage::is_potentially_local_place; -use clippy_utils::{higher, path_to_local}; +use clippy_utils::{higher, path_to_local, sym}; use rustc_errors::Applicability; use rustc_hir::intravisit::{FnKind, Visitor, walk_expr, walk_fn}; use rustc_hir::{BinOpKind, Body, Expr, ExprKind, FnDecl, HirId, Node, PathSegment, UnOp}; @@ -11,8 +11,8 @@ use rustc_middle::hir::nested_filter; use rustc_middle::mir::FakeReadCause; use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_session::declare_lint_pass; +use rustc_span::Span; use rustc_span::def_id::LocalDefId; -use rustc_span::{Span, sym}; declare_clippy_lint! { /// ### What it does @@ -307,8 +307,8 @@ impl<'tcx> Visitor<'tcx> for UnwrappableVariablesVisitor<'_, 'tcx> { if let ExprKind::MethodCall(method_name, self_arg, ..) = expr.kind && let (self_arg, as_ref_kind) = consume_option_as_ref(self_arg) && let Some(id) = path_to_local(self_arg) - && [sym::unwrap, sym::expect, sym!(unwrap_err)].contains(&method_name.ident.name) - && let call_to_unwrap = [sym::unwrap, sym::expect].contains(&method_name.ident.name) + && matches!(method_name.ident.name, sym::unwrap | sym::expect | sym::unwrap_err) + && let call_to_unwrap = matches!(method_name.ident.name, sym::unwrap | sym::expect) && let Some(unwrappable) = self.unwrappables.iter() .find(|u| u.local_id == id) // Span contexts should not differ with the conditional branch diff --git a/clippy_lints/src/useless_conversion.rs b/clippy_lints/src/useless_conversion.rs index 57bb2fc27f145..3a9c997a579d1 100644 --- a/clippy_lints/src/useless_conversion.rs +++ b/clippy_lints/src/useless_conversion.rs @@ -92,36 +92,36 @@ fn into_iter_bound<'tcx>( let mut into_iter_span = None; for (pred, span) in cx.tcx.explicit_predicates_of(fn_did).predicates { - if let ty::ClauseKind::Trait(tr) = pred.kind().skip_binder() { - if tr.self_ty().is_param(param_index) { - if tr.def_id() == into_iter_did { - into_iter_span = Some(*span); - } else { - let tr = cx.tcx.erase_regions(tr); - if tr.has_escaping_bound_vars() { - return None; - } - - // Substitute generics in the predicate and replace the IntoIterator type parameter with the - // `.into_iter()` receiver to see if the bound also holds for that type. - let args = cx.tcx.mk_args_from_iter(node_args.iter().enumerate().map(|(i, arg)| { - if i == param_index as usize { - GenericArg::from(into_iter_receiver) - } else { - arg - } - })); + if let ty::ClauseKind::Trait(tr) = pred.kind().skip_binder() + && tr.self_ty().is_param(param_index) + { + if tr.def_id() == into_iter_did { + into_iter_span = Some(*span); + } else { + let tr = cx.tcx.erase_regions(tr); + if tr.has_escaping_bound_vars() { + return None; + } - let predicate = EarlyBinder::bind(tr).instantiate(cx.tcx, args); - let obligation = Obligation::new(cx.tcx, ObligationCause::dummy(), cx.param_env, predicate); - if !cx - .tcx - .infer_ctxt() - .build(cx.typing_mode()) - .predicate_must_hold_modulo_regions(&obligation) - { - return None; + // Substitute generics in the predicate and replace the IntoIterator type parameter with the + // `.into_iter()` receiver to see if the bound also holds for that type. + let args = cx.tcx.mk_args_from_iter(node_args.iter().enumerate().map(|(i, arg)| { + if i == param_index as usize { + GenericArg::from(into_iter_receiver) + } else { + arg } + })); + + let predicate = EarlyBinder::bind(tr).instantiate(cx.tcx, args); + let obligation = Obligation::new(cx.tcx, ObligationCause::dummy(), cx.param_env, predicate); + if !cx + .tcx + .infer_ctxt() + .build(cx.typing_mode()) + .predicate_must_hold_modulo_regions(&obligation) + { + return None; } } } @@ -356,7 +356,7 @@ impl<'tcx> LateLintPass<'tcx> for UselessConversion { if cx.tcx.is_diagnostic_item(sym::from_fn, def_id) && same_type_and_consts(a, b) { let mut app = Applicability::MachineApplicable; - let sugg = Sugg::hir_with_context(cx, arg, e.span.ctxt(), "", &mut app).maybe_par(); + let sugg = Sugg::hir_with_context(cx, arg, e.span.ctxt(), "", &mut app).maybe_paren(); let sugg_msg = format!("consider removing `{}()`", snippet(cx, path.span, "From::from")); span_lint_and_sugg( cx, diff --git a/clippy_lints/src/utils/internal_lints.rs b/clippy_lints/src/utils/internal_lints.rs deleted file mode 100644 index deb983b6971dc..0000000000000 --- a/clippy_lints/src/utils/internal_lints.rs +++ /dev/null @@ -1,11 +0,0 @@ -pub mod almost_standard_lint_formulation; -pub mod collapsible_calls; -pub mod interning_defined_symbol; -pub mod invalid_paths; -pub mod lint_without_lint_pass; -pub mod msrv_attr_impl; -pub mod outer_expn_data_pass; -pub mod produce_ice; -pub mod slow_symbol_comparisons; -pub mod unnecessary_def_path; -pub mod unsorted_clippy_utils_paths; diff --git a/clippy_lints/src/utils/internal_lints/interning_defined_symbol.rs b/clippy_lints/src/utils/internal_lints/interning_defined_symbol.rs deleted file mode 100644 index e454427adde1b..0000000000000 --- a/clippy_lints/src/utils/internal_lints/interning_defined_symbol.rs +++ /dev/null @@ -1,241 +0,0 @@ -use clippy_utils::consts::{ConstEvalCtxt, Constant}; -use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::source::snippet; -use clippy_utils::ty::match_type; -use clippy_utils::{def_path_def_ids, is_expn_of, match_def_path, paths}; -use rustc_data_structures::fx::FxHashMap; -use rustc_errors::Applicability; -use rustc_hir::def::{DefKind, Res}; -use rustc_hir::def_id::DefId; -use rustc_hir::{BinOpKind, Expr, ExprKind, UnOp}; -use rustc_lint::{LateContext, LateLintPass}; -use rustc_middle::mir::ConstValue; -use rustc_middle::ty; -use rustc_session::impl_lint_pass; -use rustc_span::sym; -use rustc_span::symbol::Symbol; - -use std::borrow::Cow; - -declare_clippy_lint! { - /// ### What it does - /// Checks for interning symbols that have already been pre-interned and defined as constants. - /// - /// ### Why is this bad? - /// It's faster and easier to use the symbol constant. - /// - /// ### Example - /// ```rust,ignore - /// let _ = sym!(f32); - /// ``` - /// - /// Use instead: - /// ```rust,ignore - /// let _ = sym::f32; - /// ``` - pub INTERNING_DEFINED_SYMBOL, - internal, - "interning a symbol that is pre-interned and defined as a constant" -} - -declare_clippy_lint! { - /// ### What it does - /// Checks for unnecessary conversion from Symbol to a string. - /// - /// ### Why is this bad? - /// It's faster use symbols directly instead of strings. - /// - /// ### Example - /// ```rust,ignore - /// symbol.as_str() == "clippy"; - /// ``` - /// - /// Use instead: - /// ```rust,ignore - /// symbol == sym::clippy; - /// ``` - pub UNNECESSARY_SYMBOL_STR, - internal, - "unnecessary conversion between Symbol and string" -} - -#[derive(Default)] -pub struct InterningDefinedSymbol { - // Maps the symbol value to the constant DefId. - symbol_map: FxHashMap, -} - -impl_lint_pass!(InterningDefinedSymbol => [INTERNING_DEFINED_SYMBOL, UNNECESSARY_SYMBOL_STR]); - -impl<'tcx> LateLintPass<'tcx> for InterningDefinedSymbol { - fn check_crate(&mut self, cx: &LateContext<'_>) { - if !self.symbol_map.is_empty() { - return; - } - - for &module in &[&paths::KW_MODULE, &paths::SYM_MODULE] { - for def_id in def_path_def_ids(cx.tcx, module) { - for item in cx.tcx.module_children(def_id) { - if let Res::Def(DefKind::Const, item_def_id) = item.res - && let ty = cx.tcx.type_of(item_def_id).instantiate_identity() - && match_type(cx, ty, &paths::SYMBOL) - && let Ok(ConstValue::Scalar(value)) = cx.tcx.const_eval_poly(item_def_id) - && let Some(value) = value.to_u32().discard_err() - { - self.symbol_map.insert(value, item_def_id); - } - } - } - } - } - - fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { - if let ExprKind::Call(func, [arg]) = &expr.kind - && let ty::FnDef(def_id, _) = cx.typeck_results().expr_ty(func).kind() - && cx.tcx.is_diagnostic_item(sym::SymbolIntern, *def_id) - && let Some(Constant::Str(arg)) = ConstEvalCtxt::new(cx).eval_simple(arg) - && let value = Symbol::intern(&arg).as_u32() - && let Some(&def_id) = self.symbol_map.get(&value) - { - span_lint_and_sugg( - cx, - INTERNING_DEFINED_SYMBOL, - is_expn_of(expr.span, "sym").unwrap_or(expr.span), - "interning a defined symbol", - "try", - cx.tcx.def_path_str(def_id), - Applicability::MachineApplicable, - ); - } - if let ExprKind::Binary(op, left, right) = expr.kind { - if matches!(op.node, BinOpKind::Eq | BinOpKind::Ne) { - let data = [ - (left, self.symbol_str_expr(left, cx)), - (right, self.symbol_str_expr(right, cx)), - ]; - match data { - // both operands are a symbol string - [(_, Some(left)), (_, Some(right))] => { - span_lint_and_sugg( - cx, - UNNECESSARY_SYMBOL_STR, - expr.span, - "unnecessary `Symbol` to string conversion", - "try", - format!( - "{} {} {}", - left.as_symbol_snippet(cx), - op.node.as_str(), - right.as_symbol_snippet(cx), - ), - Applicability::MachineApplicable, - ); - }, - // one of the operands is a symbol string - [(expr, Some(symbol)), _] | [_, (expr, Some(symbol))] => { - // creating an owned string for comparison - if matches!(symbol, SymbolStrExpr::Expr { is_to_owned: true, .. }) { - span_lint_and_sugg( - cx, - UNNECESSARY_SYMBOL_STR, - expr.span, - "unnecessary string allocation", - "try", - format!("{}.as_str()", symbol.as_symbol_snippet(cx)), - Applicability::MachineApplicable, - ); - } - }, - // nothing found - [(_, None), (_, None)] => {}, - } - } - } - } -} - -impl InterningDefinedSymbol { - fn symbol_str_expr<'tcx>(&self, expr: &'tcx Expr<'tcx>, cx: &LateContext<'tcx>) -> Option> { - static IDENT_STR_PATHS: &[&[&str]] = &[&paths::IDENT_AS_STR]; - static SYMBOL_STR_PATHS: &[&[&str]] = &[&paths::SYMBOL_AS_STR, &paths::SYMBOL_TO_IDENT_STRING]; - let call = if let ExprKind::AddrOf(_, _, e) = expr.kind - && let ExprKind::Unary(UnOp::Deref, e) = e.kind - { - e - } else { - expr - }; - if let ExprKind::MethodCall(_, item, [], _) = call.kind - // is a method call - && let Some(did) = cx.typeck_results().type_dependent_def_id(call.hir_id) - && let ty = cx.typeck_results().expr_ty(item) - // ...on either an Ident or a Symbol - && let Some(is_ident) = if match_type(cx, ty, &paths::SYMBOL) { - Some(false) - } else if match_type(cx, ty, &paths::IDENT) { - Some(true) - } else { - None - } - // ...which converts it to a string - && let paths = if is_ident { IDENT_STR_PATHS } else { SYMBOL_STR_PATHS } - && let Some(is_to_owned) = paths - .iter() - .find_map(|path| if match_def_path(cx, did, path) { - Some(path == &paths::SYMBOL_TO_IDENT_STRING) - } else { - None - }) - .or_else(|| if cx.tcx.is_diagnostic_item(sym::to_string_method, did) { - Some(true) - } else { - None - }) - { - return Some(SymbolStrExpr::Expr { - item, - is_ident, - is_to_owned, - }); - } - // is a string constant - if let Some(Constant::Str(s)) = ConstEvalCtxt::new(cx).eval_simple(expr) { - let value = Symbol::intern(&s).as_u32(); - // ...which matches a symbol constant - if let Some(&def_id) = self.symbol_map.get(&value) { - return Some(SymbolStrExpr::Const(def_id)); - } - } - None - } -} - -enum SymbolStrExpr<'tcx> { - /// a string constant with a corresponding symbol constant - Const(DefId), - /// a "symbol to string" expression like `symbol.as_str()` - Expr { - /// part that evaluates to `Symbol` or `Ident` - item: &'tcx Expr<'tcx>, - is_ident: bool, - /// whether an owned `String` is created like `to_ident_string()` - is_to_owned: bool, - }, -} - -impl<'tcx> SymbolStrExpr<'tcx> { - /// Returns a snippet that evaluates to a `Symbol` and is const if possible - fn as_symbol_snippet(&self, cx: &LateContext<'_>) -> Cow<'tcx, str> { - match *self { - Self::Const(def_id) => cx.tcx.def_path_str(def_id).into(), - Self::Expr { item, is_ident, .. } => { - let mut snip = snippet(cx, item.span.source_callsite(), ".."); - if is_ident { - // get `Ident.name` - snip.to_mut().push_str(".name"); - } - snip - }, - } - } -} diff --git a/clippy_lints/src/utils/internal_lints/slow_symbol_comparisons.rs b/clippy_lints/src/utils/internal_lints/slow_symbol_comparisons.rs deleted file mode 100644 index b8bcb9b375601..0000000000000 --- a/clippy_lints/src/utils/internal_lints/slow_symbol_comparisons.rs +++ /dev/null @@ -1,74 +0,0 @@ -use clippy_utils::consts::{ConstEvalCtxt, Constant}; -use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::paths; -use clippy_utils::source::snippet_with_applicability; -use clippy_utils::ty::match_type; -use rustc_errors::Applicability; -use rustc_hir::{BinOpKind, Expr, ExprKind}; -use rustc_lint::{LateContext, LateLintPass}; -use rustc_session::declare_lint_pass; -use rustc_span::{Span, sym}; - -declare_clippy_lint! { - /// ### What it does - /// - /// Detects symbol comparison using `Symbol::intern`. - /// - /// ### Why is this bad? - /// - /// Comparison via `Symbol::as_str()` is faster if the interned symbols are not reused. - /// - /// ### Example - /// - /// None, see suggestion. - pub SLOW_SYMBOL_COMPARISONS, - internal, - "detects slow comparisons of symbol" -} - -declare_lint_pass!(SlowSymbolComparisons => [SLOW_SYMBOL_COMPARISONS]); - -fn check_slow_comparison<'tcx>( - cx: &LateContext<'tcx>, - op1: &'tcx Expr<'tcx>, - op2: &'tcx Expr<'tcx>, -) -> Option<(Span, String)> { - if match_type(cx, cx.typeck_results().expr_ty(op1), &paths::SYMBOL) - && let ExprKind::Call(fun, args) = op2.kind - && let ExprKind::Path(ref qpath) = fun.kind - && cx - .tcx - .is_diagnostic_item(sym::SymbolIntern, cx.qpath_res(qpath, fun.hir_id).opt_def_id()?) - && let [symbol_name_expr] = args - && let Some(Constant::Str(symbol_name)) = ConstEvalCtxt::new(cx).eval_simple(symbol_name_expr) - { - Some((op1.span, symbol_name)) - } else { - None - } -} - -impl<'tcx> LateLintPass<'tcx> for SlowSymbolComparisons { - fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &Expr<'tcx>) { - if let ExprKind::Binary(op, left, right) = expr.kind - && (op.node == BinOpKind::Eq || op.node == BinOpKind::Ne) - && let Some((symbol_span, symbol_name)) = - check_slow_comparison(cx, left, right).or_else(|| check_slow_comparison(cx, right, left)) - { - let mut applicability = Applicability::MachineApplicable; - span_lint_and_sugg( - cx, - SLOW_SYMBOL_COMPARISONS, - expr.span, - "comparing `Symbol` via `Symbol::intern`", - "use `Symbol::as_str` and check the string instead", - format!( - "{}.as_str() {} \"{symbol_name}\"", - snippet_with_applicability(cx, symbol_span, "symbol", &mut applicability), - op.node.as_str() - ), - applicability, - ); - } - } -} diff --git a/clippy_lints/src/utils/internal_lints/unsorted_clippy_utils_paths.rs b/clippy_lints/src/utils/internal_lints/unsorted_clippy_utils_paths.rs deleted file mode 100644 index a5c4bf474f7aa..0000000000000 --- a/clippy_lints/src/utils/internal_lints/unsorted_clippy_utils_paths.rs +++ /dev/null @@ -1,49 +0,0 @@ -use clippy_utils::diagnostics::span_lint; -use rustc_ast::ast::{Crate, ItemKind, ModKind}; -use rustc_lint::{EarlyContext, EarlyLintPass}; -use rustc_session::declare_lint_pass; - -declare_clippy_lint! { - /// ### What it does - /// Checks that [`clippy_utils::paths`] is sorted lexically - /// - /// ### Why is this bad? - /// We like to pretend we're an example of tidy code. - /// - /// ### Example - /// Wrong ordering of the util::paths constants. - pub UNSORTED_CLIPPY_UTILS_PATHS, - internal, - "various things that will negatively affect your clippy experience" -} - -declare_lint_pass!(UnsortedClippyUtilsPaths => [UNSORTED_CLIPPY_UTILS_PATHS]); - -impl EarlyLintPass for UnsortedClippyUtilsPaths { - fn check_crate(&mut self, cx: &EarlyContext<'_>, krate: &Crate) { - if let Some(utils) = krate.items.iter().find(|item| item.ident.name.as_str() == "utils") { - if let ItemKind::Mod(_, ModKind::Loaded(ref items, ..)) = utils.kind { - if let Some(paths) = items.iter().find(|item| item.ident.name.as_str() == "paths") { - if let ItemKind::Mod(_, ModKind::Loaded(ref items, ..)) = paths.kind { - let mut last_name: Option<&str> = None; - for item in items { - let name = item.ident.as_str(); - if let Some(last_name) = last_name { - if *last_name > *name { - span_lint( - cx, - UNSORTED_CLIPPY_UTILS_PATHS, - item.span, - "this constant should be before the previous constant due to lexical \ - ordering", - ); - } - } - last_name = Some(name); - } - } - } - } - } - } -} diff --git a/clippy_lints/src/utils/mod.rs b/clippy_lints/src/utils/mod.rs index 4476cd1005e7e..16066dd96c0ab 100644 --- a/clippy_lints/src/utils/mod.rs +++ b/clippy_lints/src/utils/mod.rs @@ -2,6 +2,3 @@ pub mod attr_collector; pub mod author; pub mod dump_hir; pub mod format_args_collector; - -#[cfg(feature = "internal")] -pub mod internal_lints; diff --git a/clippy_lints/src/wildcard_imports.rs b/clippy_lints/src/wildcard_imports.rs index 405310512dff3..5b3f60ad6ab0b 100644 --- a/clippy_lints/src/wildcard_imports.rs +++ b/clippy_lints/src/wildcard_imports.rs @@ -68,6 +68,8 @@ declare_clippy_lint! { /// (including the standard library) provide modules named "prelude" specifically designed /// for wildcard import. /// + /// Wildcard imports reexported through `pub use` are also allowed. + /// /// `use super::*` is allowed in test modules. This is defined as any module with "test" in the name. /// /// These exceptions can be disabled using the `warn-on-all-wildcard-imports` configuration flag. @@ -121,7 +123,9 @@ impl LateLintPass<'_> for WildcardImports { } let module = cx.tcx.parent_module_from_def_id(item.owner_id.def_id); - if cx.tcx.visibility(item.owner_id.def_id) != ty::Visibility::Restricted(module.to_def_id()) { + if cx.tcx.visibility(item.owner_id.def_id) != ty::Visibility::Restricted(module.to_def_id()) + && !self.warn_on_all + { return; } if let ItemKind::Use(use_path, UseKind::Glob) = &item.kind diff --git a/clippy_lints/src/zero_sized_map_values.rs b/clippy_lints/src/zero_sized_map_values.rs index f6948be7f67aa..a97643e0eaca5 100644 --- a/clippy_lints/src/zero_sized_map_values.rs +++ b/clippy_lints/src/zero_sized_map_values.rs @@ -74,10 +74,10 @@ impl LateLintPass<'_> for ZeroSizedMapValues { fn in_trait_impl(cx: &LateContext<'_>, hir_id: HirId) -> bool { let parent_id = cx.tcx.hir_get_parent_item(hir_id); let second_parent_id = cx.tcx.hir_get_parent_item(parent_id.into()).def_id; - if let Node::Item(item) = cx.tcx.hir_node_by_def_id(second_parent_id) { - if let ItemKind::Impl(hir::Impl { of_trait: Some(_), .. }) = item.kind { - return true; - } + if let Node::Item(item) = cx.tcx.hir_node_by_def_id(second_parent_id) + && let ItemKind::Impl(hir::Impl { of_trait: Some(_), .. }) = item.kind + { + return true; } false } diff --git a/clippy_lints/src/zombie_processes.rs b/clippy_lints/src/zombie_processes.rs index 7667db469689e..39c1aab8967ad 100644 --- a/clippy_lints/src/zombie_processes.rs +++ b/clippy_lints/src/zombie_processes.rs @@ -131,7 +131,7 @@ struct WaitFinder<'a, 'tcx> { local_id: HirId, state: VisitorState, early_return: Option, - // When joining two if branches where one of them doesn't call `wait()`, stores its span for more targetted help + // When joining two if branches where one of them doesn't call `wait()`, stores its span for more targeted help // messages missing_wait_branch: Option, } diff --git a/clippy_lints_internal/Cargo.toml b/clippy_lints_internal/Cargo.toml new file mode 100644 index 0000000000000..2a0ceac27a324 --- /dev/null +++ b/clippy_lints_internal/Cargo.toml @@ -0,0 +1,14 @@ +[package] +name = "clippy_lints_internal" +version = "0.0.1" +edition = "2021" + +[dependencies] +clippy_config = { path = "../clippy_config" } +clippy_utils = { path = "../clippy_utils" } +regex = { version = "1.5" } +rustc-semver = "1.1" + +[package.metadata.rust-analyzer] +# This crate uses #[feature(rustc_private)] +rustc_private = true diff --git a/clippy_lints/src/utils/internal_lints/almost_standard_lint_formulation.rs b/clippy_lints_internal/src/almost_standard_lint_formulation.rs similarity index 92% rename from clippy_lints/src/utils/internal_lints/almost_standard_lint_formulation.rs rename to clippy_lints_internal/src/almost_standard_lint_formulation.rs index 0a01a364a75b9..4fd5ea459a554 100644 --- a/clippy_lints/src/utils/internal_lints/almost_standard_lint_formulation.rs +++ b/clippy_lints_internal/src/almost_standard_lint_formulation.rs @@ -1,11 +1,12 @@ -use crate::utils::internal_lints::lint_without_lint_pass::is_lint_ref_type; +use crate::lint_without_lint_pass::is_lint_ref_type; use clippy_utils::diagnostics::span_lint_and_help; use regex::Regex; use rustc_hir::{Attribute, Item, ItemKind, Mutability}; use rustc_lint::{LateContext, LateLintPass}; +use rustc_lint_defs::declare_tool_lint; use rustc_session::impl_lint_pass; -declare_clippy_lint! { +declare_tool_lint! { /// ### What it does /// Checks if lint formulations have a standardized format. /// @@ -14,9 +15,10 @@ declare_clippy_lint! { /// /// ### Example /// `Checks for use...` can be written as `Checks for usage...` . - pub ALMOST_STANDARD_LINT_FORMULATION, - internal, - "lint formulations must have a standardized format." + pub clippy::ALMOST_STANDARD_LINT_FORMULATION, + Warn, + "lint formulations must have a standardized format.", + report_in_external_macro: true } impl_lint_pass!(AlmostStandardFormulation => [ALMOST_STANDARD_LINT_FORMULATION]); diff --git a/clippy_lints/src/utils/internal_lints/collapsible_calls.rs b/clippy_lints_internal/src/collapsible_calls.rs similarity index 97% rename from clippy_lints/src/utils/internal_lints/collapsible_calls.rs rename to clippy_lints_internal/src/collapsible_calls.rs index 2e6fb7c4ce4d5..d7967a0cc022f 100644 --- a/clippy_lints/src/utils/internal_lints/collapsible_calls.rs +++ b/clippy_lints_internal/src/collapsible_calls.rs @@ -4,12 +4,13 @@ use clippy_utils::{SpanlessEq, is_expr_path_def_path, is_lint_allowed, peel_bloc use rustc_errors::Applicability; use rustc_hir::{Closure, Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; +use rustc_lint_defs::declare_tool_lint; use rustc_session::declare_lint_pass; use rustc_span::Span; use std::borrow::{Borrow, Cow}; -declare_clippy_lint! { +declare_tool_lint! { /// ### What it does /// Lints `span_lint_and_then` function calls, where the /// closure argument has only one statement and that statement is a method @@ -64,9 +65,10 @@ declare_clippy_lint! { /// span_lint_and_note(cx, TEST_LINT, expr.span, lint_msg, Some(expr.span), note_msg); /// span_lint_and_note(cx, TEST_LINT, expr.span, lint_msg, None, note_msg); /// ``` - pub COLLAPSIBLE_SPAN_LINT_CALLS, - internal, - "found collapsible `span_lint_and_then` calls" + pub clippy::COLLAPSIBLE_SPAN_LINT_CALLS, + Warn, + "found collapsible `span_lint_and_then` calls", + report_in_external_macro: true } declare_lint_pass!(CollapsibleCalls => [COLLAPSIBLE_SPAN_LINT_CALLS]); diff --git a/clippy_lints_internal/src/interning_literals.rs b/clippy_lints_internal/src/interning_literals.rs new file mode 100644 index 0000000000000..6cee37442349c --- /dev/null +++ b/clippy_lints_internal/src/interning_literals.rs @@ -0,0 +1,102 @@ +use clippy_utils::consts::{ConstEvalCtxt, Constant}; +use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::ty::match_type; +use clippy_utils::{def_path_def_ids, paths}; +use rustc_data_structures::fx::FxHashMap; +use rustc_errors::Applicability; +use rustc_hir::def::{DefKind, Res}; +use rustc_hir::{Expr, ExprKind}; +use rustc_lint::{LateContext, LateLintPass}; +use rustc_lint_defs::declare_tool_lint; +use rustc_middle::mir::ConstValue; +use rustc_middle::ty; +use rustc_session::impl_lint_pass; +use rustc_span::sym; +use rustc_span::symbol::Symbol; + +declare_tool_lint! { + /// ### What it does + /// Checks for interning string literals as symbols + /// + /// ### Why is this bad? + /// It's faster and easier to use the symbol constant. If one doesn't exist it can be added to `clippy_utils/src/sym.rs` + /// + /// ### Example + /// ```rust,ignore + /// let _ = Symbol::intern("f32"); + /// ``` + /// + /// Use instead: + /// ```rust,ignore + /// let _ = sym::f32; + /// ``` + pub clippy::INTERNING_LITERALS, + Warn, + "interning a symbol that is a literal", + report_in_external_macro: true +} + +#[derive(Default)] +pub struct InterningDefinedSymbol { + // Maps the symbol to the import path + symbol_map: FxHashMap, +} + +impl_lint_pass!(InterningDefinedSymbol => [INTERNING_LITERALS]); + +impl<'tcx> LateLintPass<'tcx> for InterningDefinedSymbol { + fn check_crate(&mut self, cx: &LateContext<'_>) { + let modules = [ + ("kw", &paths::KW_MODULE[..]), + ("sym", &paths::SYM_MODULE), + ("sym", &paths::CLIPPY_SYM_MODULE), + ]; + for (prefix, module) in modules { + for def_id in def_path_def_ids(cx.tcx, module) { + // When linting `clippy_utils` itself we can't use `module_children` as it's a local def id. It will + // still lint but the suggestion will say to add it to `sym.rs` even if it's already there + if def_id.is_local() { + continue; + } + + for item in cx.tcx.module_children(def_id) { + if let Res::Def(DefKind::Const, item_def_id) = item.res + && let ty = cx.tcx.type_of(item_def_id).instantiate_identity() + && match_type(cx, ty, &paths::SYMBOL) + && let Ok(ConstValue::Scalar(value)) = cx.tcx.const_eval_poly(item_def_id) + && let Some(value) = value.to_u32().discard_err() + { + self.symbol_map.insert(value, (prefix, item.ident.name)); + } + } + } + } + } + + fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) { + if let ExprKind::Call(func, [arg]) = &expr.kind + && let ty::FnDef(def_id, _) = cx.typeck_results().expr_ty(func).kind() + && cx.tcx.is_diagnostic_item(sym::SymbolIntern, *def_id) + && let Some(Constant::Str(arg)) = ConstEvalCtxt::new(cx).eval_simple(arg) + { + span_lint_and_then( + cx, + INTERNING_LITERALS, + expr.span, + "interning a string literal", + |diag| { + let value = Symbol::intern(&arg).as_u32(); + let (message, path) = if let Some((prefix, name)) = self.symbol_map.get(&value) { + ("use the preinterned symbol", format!("{prefix}::{name}")) + } else { + ( + "add the symbol to `clippy_utils/src/sym.rs` and use it", + format!("sym::{}", arg.replace(|ch: char| !ch.is_alphanumeric(), "_")), + ) + }; + diag.span_suggestion_verbose(expr.span, message, path, Applicability::MaybeIncorrect); + }, + ); + } + } +} diff --git a/clippy_lints/src/utils/internal_lints/invalid_paths.rs b/clippy_lints_internal/src/invalid_paths.rs similarity index 79% rename from clippy_lints/src/utils/internal_lints/invalid_paths.rs rename to clippy_lints_internal/src/invalid_paths.rs index 252ac5e676822..bee87efa3fcd4 100644 --- a/clippy_lints/src/utils/internal_lints/invalid_paths.rs +++ b/clippy_lints_internal/src/invalid_paths.rs @@ -5,12 +5,13 @@ use rustc_hir as hir; use rustc_hir::Item; use rustc_hir::def::DefKind; use rustc_lint::{LateContext, LateLintPass}; +use rustc_lint_defs::declare_tool_lint; use rustc_middle::ty::fast_reject::SimplifiedType; use rustc_middle::ty::{self, FloatTy}; use rustc_session::declare_lint_pass; use rustc_span::symbol::Symbol; -declare_clippy_lint! { +declare_tool_lint! { /// ### What it does /// Checks the paths module for invalid paths. /// @@ -19,9 +20,10 @@ declare_clippy_lint! { /// /// ### Example /// None. - pub INVALID_PATHS, - internal, - "invalid path" + pub clippy::INVALID_PATHS, + Warn, + "invalid path", + report_in_external_macro: true } declare_lint_pass!(InvalidPaths => [INVALID_PATHS]); @@ -80,22 +82,22 @@ pub fn check_path(cx: &LateContext<'_>, path: &[&str]) -> bool { .copied(); for item_def_id in lang_items.iter().map(|(_, def_id)| def_id).chain(incoherent_impls) { let lang_item_path = cx.get_def_path(item_def_id); - if path_syms.starts_with(&lang_item_path) { - if let [item] = &path_syms[lang_item_path.len()..] { - if matches!( - cx.tcx.def_kind(item_def_id), - DefKind::Mod | DefKind::Enum | DefKind::Trait - ) { - for child in cx.tcx.module_children(item_def_id) { - if child.ident.name == *item { - return true; - } + if path_syms.starts_with(&lang_item_path) + && let [item] = &path_syms[lang_item_path.len()..] + { + if matches!( + cx.tcx.def_kind(item_def_id), + DefKind::Mod | DefKind::Enum | DefKind::Trait + ) { + for child in cx.tcx.module_children(item_def_id) { + if child.ident.name == *item { + return true; } - } else { - for child in cx.tcx.associated_item_def_ids(item_def_id) { - if cx.tcx.item_name(*child) == *item { - return true; - } + } + } else { + for child in cx.tcx.associated_item_def_ids(item_def_id) { + if cx.tcx.item_name(*child) == *item { + return true; } } } diff --git a/clippy_lints_internal/src/lib.rs b/clippy_lints_internal/src/lib.rs new file mode 100644 index 0000000000000..1c42f4112f9a1 --- /dev/null +++ b/clippy_lints_internal/src/lib.rs @@ -0,0 +1,74 @@ +#![feature(let_chains, rustc_private)] +#![allow( + clippy::missing_docs_in_private_items, + clippy::must_use_candidate, + rustc::diagnostic_outside_of_impl, + rustc::untranslatable_diagnostic +)] +#![warn( + trivial_casts, + trivial_numeric_casts, + rust_2018_idioms, + unused_lifetimes, + unused_qualifications, + rustc::internal +)] +// Disable this rustc lint for now, as it was also done in rustc +#![allow(rustc::potential_query_instability)] +// None of these lints need a version. +#![allow(clippy::missing_clippy_version_attribute)] + +extern crate rustc_ast; +extern crate rustc_attr_parsing; +extern crate rustc_data_structures; +extern crate rustc_errors; +extern crate rustc_hir; +extern crate rustc_lint; +extern crate rustc_lint_defs; +extern crate rustc_middle; +extern crate rustc_session; +extern crate rustc_span; + +mod almost_standard_lint_formulation; +mod collapsible_calls; +mod interning_literals; +mod invalid_paths; +mod lint_without_lint_pass; +mod msrv_attr_impl; +mod outer_expn_data_pass; +mod produce_ice; +mod unnecessary_def_path; +mod unsorted_clippy_utils_paths; + +use rustc_lint::{Lint, LintStore}; + +static LINTS: &[&Lint] = &[ + almost_standard_lint_formulation::ALMOST_STANDARD_LINT_FORMULATION, + collapsible_calls::COLLAPSIBLE_SPAN_LINT_CALLS, + interning_literals::INTERNING_LITERALS, + invalid_paths::INVALID_PATHS, + lint_without_lint_pass::DEFAULT_LINT, + lint_without_lint_pass::INVALID_CLIPPY_VERSION_ATTRIBUTE, + lint_without_lint_pass::LINT_WITHOUT_LINT_PASS, + lint_without_lint_pass::MISSING_CLIPPY_VERSION_ATTRIBUTE, + msrv_attr_impl::MISSING_MSRV_ATTR_IMPL, + outer_expn_data_pass::OUTER_EXPN_EXPN_DATA, + produce_ice::PRODUCE_ICE, + unnecessary_def_path::UNNECESSARY_DEF_PATH, + unsorted_clippy_utils_paths::UNSORTED_CLIPPY_UTILS_PATHS, +]; + +pub fn register_lints(store: &mut LintStore) { + store.register_lints(LINTS); + + store.register_early_pass(|| Box::new(unsorted_clippy_utils_paths::UnsortedClippyUtilsPaths)); + store.register_early_pass(|| Box::new(produce_ice::ProduceIce)); + store.register_late_pass(|_| Box::new(collapsible_calls::CollapsibleCalls)); + store.register_late_pass(|_| Box::new(invalid_paths::InvalidPaths)); + store.register_late_pass(|_| Box::::default()); + store.register_late_pass(|_| Box::::default()); + store.register_late_pass(|_| Box::::default()); + store.register_late_pass(|_| Box::new(outer_expn_data_pass::OuterExpnDataPass)); + store.register_late_pass(|_| Box::new(msrv_attr_impl::MsrvAttrImpl)); + store.register_late_pass(|_| Box::new(almost_standard_lint_formulation::AlmostStandardFormulation::new())); +} diff --git a/clippy_lints/src/utils/internal_lints/lint_without_lint_pass.rs b/clippy_lints_internal/src/lint_without_lint_pass.rs similarity index 90% rename from clippy_lints/src/utils/internal_lints/lint_without_lint_pass.rs rename to clippy_lints_internal/src/lint_without_lint_pass.rs index 94a2e598522b2..6a75defcce341 100644 --- a/clippy_lints/src/utils/internal_lints/lint_without_lint_pass.rs +++ b/clippy_lints_internal/src/lint_without_lint_pass.rs @@ -9,13 +9,14 @@ use rustc_hir::hir_id::CRATE_HIR_ID; use rustc_hir::intravisit::Visitor; use rustc_hir::{ExprKind, HirId, Item, MutTy, Mutability, Path, TyKind}; use rustc_lint::{LateContext, LateLintPass}; +use rustc_lint_defs::declare_tool_lint; use rustc_middle::hir::nested_filter; use rustc_session::impl_lint_pass; use rustc_span::source_map::Spanned; use rustc_span::symbol::Symbol; use rustc_span::{Span, sym}; -declare_clippy_lint! { +declare_tool_lint! { /// ### What it does /// Ensures every lint is associated to a `LintPass`. /// @@ -37,12 +38,14 @@ declare_clippy_lint! { /// declare_lint_pass!(Pass => [LINT_1, LINT_2]); /// // missing FORGOTTEN_LINT /// ``` - pub LINT_WITHOUT_LINT_PASS, - internal, - "declaring a lint without associating it in a LintPass" + pub clippy::LINT_WITHOUT_LINT_PASS, + Warn, + "declaring a lint without associating it in a LintPass", + report_in_external_macro: true + } -declare_clippy_lint! { +declare_tool_lint! { /// ### What it does /// Checks for cases of an auto-generated lint without an updated description, /// i.e. `default lint description`. @@ -59,30 +62,32 @@ declare_clippy_lint! { /// ```rust,ignore /// declare_lint! { pub COOL_LINT, nursery, "a great new lint" } /// ``` - pub DEFAULT_LINT, - internal, - "found 'default lint description' in a lint declaration" + pub clippy::DEFAULT_LINT, + Warn, + "found 'default lint description' in a lint declaration", + report_in_external_macro: true } -declare_clippy_lint! { +declare_tool_lint! { /// ### What it does /// Checks for invalid `clippy::version` attributes. /// /// Valid values are: /// * "pre 1.29.0" /// * any valid semantic version - pub INVALID_CLIPPY_VERSION_ATTRIBUTE, - internal, - "found an invalid `clippy::version` attribute" + pub clippy::INVALID_CLIPPY_VERSION_ATTRIBUTE, + Warn, + "found an invalid `clippy::version` attribute", + report_in_external_macro: true } -declare_clippy_lint! { +declare_tool_lint! { /// ### What it does /// Checks for declared clippy lints without the `clippy::version` attribute. - /// - pub MISSING_CLIPPY_VERSION_ATTRIBUTE, - internal, - "found clippy lint without `clippy::version` attribute" + pub clippy::MISSING_CLIPPY_VERSION_ATTRIBUTE, + Warn, + "found clippy lint without `clippy::version` attribute", + report_in_external_macro: true } #[derive(Clone, Debug, Default)] @@ -100,10 +105,6 @@ impl_lint_pass!(LintWithoutLintPass => [ impl<'tcx> LateLintPass<'tcx> for LintWithoutLintPass { fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'_>) { - if is_lint_allowed(cx, DEFAULT_LINT, item.hir_id()) { - return; - } - if let hir::ItemKind::Static(ident, ty, Mutability::Not, body_id) = item.kind { if is_lint_ref_type(cx, ty) { check_invalid_clippy_version_attribute(cx, item); @@ -205,12 +206,10 @@ pub(super) fn is_lint_ref_type(cx: &LateContext<'_>, ty: &hir::Ty<'_>) -> bool { mutbl: Mutability::Not, }, ) = ty.kind + && let TyKind::Path(ref path) = inner.kind + && let Res::Def(DefKind::Struct, def_id) = cx.qpath_res(path, inner.hir_id) { - if let TyKind::Path(ref path) = inner.kind { - if let Res::Def(DefKind::Struct, def_id) = cx.qpath_res(path, inner.hir_id) { - return match_def_path(cx, def_id, &paths::LINT); - } - } + return match_def_path(cx, def_id, &paths::LINT); } false diff --git a/clippy_lints/src/utils/internal_lints/msrv_attr_impl.rs b/clippy_lints_internal/src/msrv_attr_impl.rs similarity index 93% rename from clippy_lints/src/utils/internal_lints/msrv_attr_impl.rs rename to clippy_lints_internal/src/msrv_attr_impl.rs index 558acacb97245..dda054546e262 100644 --- a/clippy_lints/src/utils/internal_lints/msrv_attr_impl.rs +++ b/clippy_lints_internal/src/msrv_attr_impl.rs @@ -5,16 +5,17 @@ use clippy_utils::{match_def_path, paths}; use rustc_errors::Applicability; use rustc_hir as hir; use rustc_lint::{LateContext, LateLintPass, LintContext}; +use rustc_lint_defs::declare_tool_lint; use rustc_middle::ty::{self, EarlyBinder, GenericArgKind}; use rustc_session::declare_lint_pass; -declare_clippy_lint! { +declare_tool_lint! { /// ### What it does /// Check that the `extract_msrv_attr!` macro is used, when a lint has a MSRV. - /// - pub MISSING_MSRV_ATTR_IMPL, - internal, - "checking if all necessary steps were taken when adding a MSRV to a lint" + pub clippy::MISSING_MSRV_ATTR_IMPL, + Warn, + "checking if all necessary steps were taken when adding a MSRV to a lint", + report_in_external_macro: true } declare_lint_pass!(MsrvAttrImpl => [MISSING_MSRV_ATTR_IMPL]); diff --git a/clippy_lints/src/utils/internal_lints/outer_expn_data_pass.rs b/clippy_lints_internal/src/outer_expn_data_pass.rs similarity index 92% rename from clippy_lints/src/utils/internal_lints/outer_expn_data_pass.rs rename to clippy_lints_internal/src/outer_expn_data_pass.rs index 326e172146130..e94419647978c 100644 --- a/clippy_lints/src/utils/internal_lints/outer_expn_data_pass.rs +++ b/clippy_lints_internal/src/outer_expn_data_pass.rs @@ -4,10 +4,11 @@ use clippy_utils::{is_lint_allowed, method_calls, paths}; use rustc_errors::Applicability; use rustc_hir as hir; use rustc_lint::{LateContext, LateLintPass}; +use rustc_lint_defs::declare_tool_lint; use rustc_session::declare_lint_pass; use rustc_span::symbol::Symbol; -declare_clippy_lint! { +declare_tool_lint! { /// ### What it does /// Checks for calls to `cx.outer().expn_data()` and suggests to use /// the `cx.outer_expn_data()` @@ -24,9 +25,10 @@ declare_clippy_lint! { /// ```rust,ignore /// expr.span.ctxt().outer_expn_data() /// ``` - pub OUTER_EXPN_EXPN_DATA, - internal, - "using `cx.outer_expn().expn_data()` instead of `cx.outer_expn_data()`" + pub clippy::OUTER_EXPN_EXPN_DATA, + Warn, + "using `cx.outer_expn().expn_data()` instead of `cx.outer_expn_data()`", + report_in_external_macro: true } declare_lint_pass!(OuterExpnDataPass => [OUTER_EXPN_EXPN_DATA]); diff --git a/clippy_lints/src/utils/internal_lints/produce_ice.rs b/clippy_lints_internal/src/produce_ice.rs similarity index 79% rename from clippy_lints/src/utils/internal_lints/produce_ice.rs rename to clippy_lints_internal/src/produce_ice.rs index 0a07919d659fe..14e93dc6d5f13 100644 --- a/clippy_lints/src/utils/internal_lints/produce_ice.rs +++ b/clippy_lints_internal/src/produce_ice.rs @@ -1,10 +1,11 @@ use rustc_ast::ast::NodeId; use rustc_ast::visit::FnKind; use rustc_lint::{EarlyContext, EarlyLintPass, LintContext}; +use rustc_lint_defs::declare_tool_lint; use rustc_session::declare_lint_pass; use rustc_span::Span; -declare_clippy_lint! { +declare_tool_lint! { /// ### What it does /// Not an actual lint. This lint is only meant for testing our customized internal compiler /// error message by calling `panic`. @@ -16,9 +17,10 @@ declare_clippy_lint! { /// ```rust,ignore /// 🍦🍦🍦🍦🍦 /// ``` - pub PRODUCE_ICE, - internal, - "this message should not appear anywhere as we ICE before and don't emit the lint" + pub clippy::PRODUCE_ICE, + Warn, + "this message should not appear anywhere as we ICE before and don't emit the lint", + report_in_external_macro: true } declare_lint_pass!(ProduceIce => [PRODUCE_ICE]); @@ -35,7 +37,7 @@ impl EarlyLintPass for ProduceIce { fn is_trigger_fn(fn_kind: FnKind<'_>) -> bool { match fn_kind { - FnKind::Fn(_, ident, ..) => ident.name.as_str() == "it_looks_like_you_are_trying_to_kill_clippy", + FnKind::Fn(_, _, func) => func.ident.name.as_str() == "it_looks_like_you_are_trying_to_kill_clippy", FnKind::Closure(..) => false, } } diff --git a/clippy_lints/src/utils/internal_lints/unnecessary_def_path.rs b/clippy_lints_internal/src/unnecessary_def_path.rs similarity index 97% rename from clippy_lints/src/utils/internal_lints/unnecessary_def_path.rs rename to clippy_lints_internal/src/unnecessary_def_path.rs index 76b0a52621be4..6bdfbed55b062 100644 --- a/clippy_lints/src/utils/internal_lints/unnecessary_def_path.rs +++ b/clippy_lints_internal/src/unnecessary_def_path.rs @@ -8,6 +8,7 @@ use rustc_hir::def::{DefKind, Res}; use rustc_hir::def_id::DefId; use rustc_hir::{Expr, ExprKind, LetStmt, Mutability, Node}; use rustc_lint::{LateContext, LateLintPass}; +use rustc_lint_defs::declare_tool_lint; use rustc_middle::mir::ConstValue; use rustc_middle::mir::interpret::{Allocation, GlobalAlloc}; use rustc_middle::ty::{self, Ty}; @@ -17,7 +18,7 @@ use rustc_span::symbol::Symbol; use std::str; -declare_clippy_lint! { +declare_tool_lint! { /// ### What it does /// Checks for usage of def paths when a diagnostic item or a `LangItem` could be used. /// @@ -34,9 +35,10 @@ declare_clippy_lint! { /// ```rust,ignore /// utils::is_type_diagnostic_item(cx, ty, sym::Vec) /// ``` - pub UNNECESSARY_DEF_PATH, - internal, - "using a def path when a diagnostic item or a `LangItem` is available" + pub clippy::UNNECESSARY_DEF_PATH, + Warn, + "using a def path when a diagnostic item or a `LangItem` is available", + report_in_external_macro: true } impl_lint_pass!(UnnecessaryDefPath => [UNNECESSARY_DEF_PATH]); @@ -281,10 +283,10 @@ fn path_from_array(exprs: &[Expr<'_>]) -> Option> { exprs .iter() .map(|expr| { - if let ExprKind::Lit(lit) = &expr.kind { - if let LitKind::Str(sym, _) = lit.node { - return Some((*sym.as_str()).to_owned()); - } + if let ExprKind::Lit(lit) = &expr.kind + && let LitKind::Str(sym, _) = lit.node + { + return Some((*sym.as_str()).to_owned()); } None diff --git a/clippy_lints_internal/src/unsorted_clippy_utils_paths.rs b/clippy_lints_internal/src/unsorted_clippy_utils_paths.rs new file mode 100644 index 0000000000000..8e281ecb2ee44 --- /dev/null +++ b/clippy_lints_internal/src/unsorted_clippy_utils_paths.rs @@ -0,0 +1,54 @@ +use clippy_utils::diagnostics::span_lint; +use rustc_ast::ast::{Crate, ItemKind, ModKind}; +use rustc_lint::{EarlyContext, EarlyLintPass}; +use rustc_lint_defs::declare_tool_lint; +use rustc_session::declare_lint_pass; + +declare_tool_lint! { + /// ### What it does + /// Checks that [`clippy_utils::paths`] is sorted lexically + /// + /// ### Why is this bad? + /// We like to pretend we're an example of tidy code. + /// + /// ### Example + /// Wrong ordering of the util::paths constants. + pub clippy::UNSORTED_CLIPPY_UTILS_PATHS, + Warn, + "various things that will negatively affect your clippy experience", + report_in_external_macro: true +} + +declare_lint_pass!(UnsortedClippyUtilsPaths => [UNSORTED_CLIPPY_UTILS_PATHS]); + +impl EarlyLintPass for UnsortedClippyUtilsPaths { + fn check_crate(&mut self, cx: &EarlyContext<'_>, krate: &Crate) { + if let Some(utils) = krate + .items + .iter() + .find(|item| item.kind.ident().is_some_and(|i| i.name.as_str() == "utils")) + && let ItemKind::Mod(_, _, ModKind::Loaded(ref items, ..)) = utils.kind + && let Some(paths) = items + .iter() + .find(|item| item.kind.ident().is_some_and(|i| i.name.as_str() == "paths")) + && let ItemKind::Mod(_, _, ModKind::Loaded(ref items, ..)) = paths.kind + { + let mut last_name: Option = None; + for item in items { + let name = item.kind.ident().expect("const items have idents").to_string(); + if let Some(last_name) = last_name + && *last_name > *name + { + span_lint( + cx, + UNSORTED_CLIPPY_UTILS_PATHS, + item.span, + "this constant should be before the previous constant due to lexical \ + ordering", + ); + } + last_name = Some(name); + } + } + } +} diff --git a/clippy_utils/Cargo.toml b/clippy_utils/Cargo.toml index ba4bb1d177c57..b98e990175033 100644 --- a/clippy_utils/Cargo.toml +++ b/clippy_utils/Cargo.toml @@ -1,7 +1,7 @@ [package] name = "clippy_utils" # begin autogenerated version -version = "0.1.87" +version = "0.1.88" # end autogenerated version edition = "2024" description = "Helpful tools for writing lints, provided as they are used in Clippy" diff --git a/clippy_utils/README.md b/clippy_utils/README.md index 7c665b4249776..aceff14a1599c 100644 --- a/clippy_utils/README.md +++ b/clippy_utils/README.md @@ -8,7 +8,7 @@ This crate is only guaranteed to build with this `nightly` toolchain: ``` -nightly-2025-03-20 +nightly-2025-04-22 ``` diff --git a/clippy_utils/src/ast_utils/mod.rs b/clippy_utils/src/ast_utils/mod.rs index c5dce26143be4..8996b694ed8f7 100644 --- a/clippy_utils/src/ast_utils/mod.rs +++ b/clippy_utils/src/ast_utils/mod.rs @@ -348,11 +348,7 @@ pub fn eq_item_kind(l: &ItemKind, r: &ItemKind) -> bool { safety: rs, define_opaque: _, }), - ) => eq_id(*li, *ri) - && lm == rm - && ls == rs - && eq_ty(lt, rt) - && eq_expr_opt(le.as_ref(), re.as_ref()), + ) => eq_id(*li, *ri) && lm == rm && ls == rs && eq_ty(lt, rt) && eq_expr_opt(le.as_ref(), re.as_ref()), ( Const(box ConstItem { defaultness: ld, @@ -370,11 +366,13 @@ pub fn eq_item_kind(l: &ItemKind, r: &ItemKind) -> bool { expr: re, define_opaque: _, }), - ) => eq_defaultness(*ld, *rd) + ) => { + eq_defaultness(*ld, *rd) && eq_id(*li, *ri) && eq_generics(lg, rg) && eq_ty(lt, rt) - && eq_expr_opt(le.as_ref(), re.as_ref()), + && eq_expr_opt(le.as_ref(), re.as_ref()) + }, ( Fn(box ast::Fn { defaultness: ld, @@ -440,7 +438,7 @@ pub fn eq_item_kind(l: &ItemKind, r: &ItemKind) -> bool { }, (Enum(li, le, lg), Enum(ri, re, rg)) => { eq_id(*li, *ri) && over(&le.variants, &re.variants, eq_variant) && eq_generics(lg, rg) - } + }, (Struct(li, lv, lg), Struct(ri, rv, rg)) | (Union(li, lv, lg), Union(ri, rv, rg)) => { eq_id(*li, *ri) && eq_variant_data(lv, rv) && eq_generics(lg, rg) }, @@ -471,7 +469,7 @@ pub fn eq_item_kind(l: &ItemKind, r: &ItemKind) -> bool { }, (TraitAlias(li, lg, lb), TraitAlias(ri, rg, rb)) => { eq_id(*li, *ri) && eq_generics(lg, rg) && over(lb, rb, eq_generic_bound) - } + }, ( Impl(box ast::Impl { safety: lu, @@ -506,7 +504,7 @@ pub fn eq_item_kind(l: &ItemKind, r: &ItemKind) -> bool { (MacCall(l), MacCall(r)) => eq_mac_call(l, r), (MacroDef(li, ld), MacroDef(ri, rd)) => { eq_id(*li, *ri) && ld.macro_rules == rd.macro_rules && eq_delim_args(&ld.body, &rd.body) - } + }, _ => false, } } @@ -531,13 +529,7 @@ pub fn eq_foreign_item_kind(l: &ForeignItemKind, r: &ForeignItemKind) -> bool { safety: rs, define_opaque: _, }), - ) => { - eq_id(*li, *ri) - && eq_ty(lt, rt) - && lm == rm - && eq_expr_opt(le.as_ref(), re.as_ref()) - && ls == rs - } + ) => eq_id(*li, *ri) && eq_ty(lt, rt) && lm == rm && eq_expr_opt(le.as_ref(), re.as_ref()) && ls == rs, ( Fn(box ast::Fn { defaultness: ld, @@ -620,7 +612,7 @@ pub fn eq_assoc_item_kind(l: &AssocItemKind, r: &AssocItemKind) -> bool { && eq_generics(lg, rg) && eq_ty(lt, rt) && eq_expr_opt(le.as_ref(), re.as_ref()) - } + }, ( Fn(box ast::Fn { defaultness: ld, diff --git a/clippy_utils/src/consts.rs b/clippy_utils/src/consts.rs index 17751e824c021..b9928b8eed497 100644 --- a/clippy_utils/src/consts.rs +++ b/clippy_utils/src/consts.rs @@ -43,14 +43,16 @@ pub enum Constant<'tcx> { Char(char), /// An integer's bit representation. Int(u128), - /// An `f16`. - F16(f16), + /// An `f16` bitcast to a `u16`. + // FIXME(f16_f128): use `f16` once builtins are available on all host tools platforms. + F16(u16), /// An `f32`. F32(f32), /// An `f64`. F64(f64), - /// An `f128`. - F128(f128), + /// An `f128` bitcast to a `u128`. + // FIXME(f16_f128): use `f128` once builtins are available on all host tools platforms. + F128(u128), /// `true` or `false`. Bool(bool), /// An array of constants. @@ -177,7 +179,7 @@ impl Hash for Constant<'_> { }, Self::F16(f) => { // FIXME(f16_f128): once conversions to/from `f128` are available on all platforms, - f.to_bits().hash(state); + f.hash(state); }, Self::F32(f) => { f64::from(f).to_bits().hash(state); @@ -186,7 +188,7 @@ impl Hash for Constant<'_> { f.to_bits().hash(state); }, Self::F128(f) => { - f.to_bits().hash(state); + f.hash(state); }, Self::Bool(b) => { b.hash(state); @@ -292,12 +294,12 @@ impl Constant<'_> { fn parse_f16(s: &str) -> Self { let f: Half = s.parse().unwrap(); - Self::F16(f16::from_bits(f.to_bits().try_into().unwrap())) + Self::F16(f.to_bits().try_into().unwrap()) } fn parse_f128(s: &str) -> Self { let f: Quad = s.parse().unwrap(); - Self::F128(f128::from_bits(f.to_bits())) + Self::F128(f.to_bits()) } } @@ -868,10 +870,10 @@ pub fn mir_to_const<'tcx>(tcx: TyCtxt<'tcx>, result: mir::Const<'tcx>) -> Option ty::Adt(adt_def, _) if adt_def.is_struct() => Some(Constant::Adt(result)), ty::Bool => Some(Constant::Bool(int == ScalarInt::TRUE)), ty::Uint(_) | ty::Int(_) => Some(Constant::Int(int.to_bits(int.size()))), - ty::Float(FloatTy::F16) => Some(Constant::F16(f16::from_bits(int.into()))), + ty::Float(FloatTy::F16) => Some(Constant::F16(int.into())), ty::Float(FloatTy::F32) => Some(Constant::F32(f32::from_bits(int.into()))), ty::Float(FloatTy::F64) => Some(Constant::F64(f64::from_bits(int.into()))), - ty::Float(FloatTy::F128) => Some(Constant::F128(f128::from_bits(int.into()))), + ty::Float(FloatTy::F128) => Some(Constant::F128(int.into())), ty::RawPtr(_, _) => Some(Constant::RawPtr(int.to_bits(int.size()))), _ => None, }, @@ -892,10 +894,10 @@ pub fn mir_to_const<'tcx>(tcx: TyCtxt<'tcx>, result: mir::Const<'tcx>) -> Option let range = alloc_range(offset + size * idx, size); let val = alloc.read_scalar(&tcx, range, /* read_provenance */ false).ok()?; res.push(match flt { - FloatTy::F16 => Constant::F16(f16::from_bits(val.to_u16().discard_err()?)), + FloatTy::F16 => Constant::F16(val.to_u16().discard_err()?), FloatTy::F32 => Constant::F32(f32::from_bits(val.to_u32().discard_err()?)), FloatTy::F64 => Constant::F64(f64::from_bits(val.to_u64().discard_err()?)), - FloatTy::F128 => Constant::F128(f128::from_bits(val.to_u128().discard_err()?)), + FloatTy::F128 => Constant::F128(val.to_u128().discard_err()?), }); } Some(Constant::Vec(res)) diff --git a/clippy_utils/src/diagnostics.rs b/clippy_utils/src/diagnostics.rs index 292792408c642..cd2098a89891d 100644 --- a/clippy_utils/src/diagnostics.rs +++ b/clippy_utils/src/diagnostics.rs @@ -17,16 +17,16 @@ use rustc_span::Span; use std::env; fn docs_link(diag: &mut Diag<'_, ()>, lint: &'static Lint) { - if env::var("CLIPPY_DISABLE_DOCS_LINKS").is_err() { - if let Some(lint) = lint.name_lower().strip_prefix("clippy::") { - diag.help(format!( - "for further information visit https://rust-lang.github.io/rust-clippy/{}/index.html#{lint}", - &option_env!("RUST_RELEASE_NUM").map_or("master".to_string(), |n| { - // extract just major + minor version and ignore patch versions - format!("rust-{}", n.rsplit_once('.').unwrap().1) - }) - )); - } + if env::var("CLIPPY_DISABLE_DOCS_LINKS").is_err() + && let Some(lint) = lint.name_lower().strip_prefix("clippy::") + { + diag.help(format!( + "for further information visit https://rust-lang.github.io/rust-clippy/{}/index.html#{lint}", + &option_env!("RUST_RELEASE_NUM").map_or("master".to_string(), |n| { + // extract just major + minor version and ignore patch versions + format!("rust-{}", n.rsplit_once('.').unwrap().1) + }) + )); } } diff --git a/clippy_utils/src/higher.rs b/clippy_utils/src/higher.rs index c4d00002292c9..d4e66ebd8e1fb 100644 --- a/clippy_utils/src/higher.rs +++ b/clippy_utils/src/higher.rs @@ -118,18 +118,17 @@ impl<'hir> IfLet<'hir> { ) = expr.kind { let mut iter = cx.tcx.hir_parent_iter(expr.hir_id); - if let Some((_, Node::Block(Block { stmts: [], .. }))) = iter.next() { - if let Some(( + if let Some((_, Node::Block(Block { stmts: [], .. }))) = iter.next() + && let Some(( _, Node::Expr(Expr { kind: ExprKind::Loop(_, _, LoopSource::While, _), .. }), )) = iter.next() - { - // while loop desugar - return None; - } + { + // while loop desugar + return None; } return Some(Self { let_pat, @@ -176,6 +175,12 @@ impl<'hir> IfLetOrMatch<'hir> { ), } } + + pub fn scrutinee(&self) -> &'hir Expr<'hir> { + match self { + Self::Match(scrutinee, _, _) | Self::IfLet(scrutinee, _, _, _, _) => scrutinee, + } + } } /// An `if` or `if let` expression diff --git a/clippy_utils/src/hir_utils.rs b/clippy_utils/src/hir_utils.rs index be295b59f609e..fe1fd70a9fa78 100644 --- a/clippy_utils/src/hir_utils.rs +++ b/clippy_utils/src/hir_utils.rs @@ -148,7 +148,7 @@ pub struct HirEqInterExpr<'a, 'b, 'tcx> { impl HirEqInterExpr<'_, '_, '_> { pub fn eq_stmt(&mut self, left: &Stmt<'_>, right: &Stmt<'_>) -> bool { match (&left.kind, &right.kind) { - (&StmtKind::Let(l), &StmtKind::Let(r)) => { + (StmtKind::Let(l), StmtKind::Let(r)) => { // This additional check ensures that the type of the locals are equivalent even if the init // expression or type have some inferred parts. if let Some((typeck_lhs, typeck_rhs)) = self.inner.maybe_typeck_results { @@ -166,7 +166,7 @@ impl HirEqInterExpr<'_, '_, '_> { && both(l.els.as_ref(), r.els.as_ref(), |l, r| self.eq_block(l, r)) && self.eq_pat(l.pat, r.pat) }, - (&StmtKind::Expr(l), &StmtKind::Expr(r)) | (&StmtKind::Semi(l), &StmtKind::Semi(r)) => self.eq_expr(l, r), + (StmtKind::Expr(l), StmtKind::Expr(r)) | (StmtKind::Semi(l), StmtKind::Semi(r)) => self.eq_expr(l, r), _ => false, } } @@ -260,7 +260,7 @@ impl HirEqInterExpr<'_, '_, '_> { fn should_ignore(&mut self, expr: &Expr<'_>) -> bool { macro_backtrace(expr.span).last().is_some_and(|macro_call| { matches!( - &self.inner.cx.tcx.get_diagnostic_name(macro_call.def_id), + self.inner.cx.tcx.get_diagnostic_name(macro_call.def_id), Some(sym::todo_macro | sym::unimplemented_macro) ) }) @@ -301,58 +301,58 @@ impl HirEqInterExpr<'_, '_, '_> { reduce_exprkind(self.inner.cx, &left.kind), reduce_exprkind(self.inner.cx, &right.kind), ) { - (&ExprKind::AddrOf(lb, l_mut, le), &ExprKind::AddrOf(rb, r_mut, re)) => { + (ExprKind::AddrOf(lb, l_mut, le), ExprKind::AddrOf(rb, r_mut, re)) => { lb == rb && l_mut == r_mut && self.eq_expr(le, re) }, - (&ExprKind::Array(l), &ExprKind::Array(r)) => self.eq_exprs(l, r), - (&ExprKind::Assign(ll, lr, _), &ExprKind::Assign(rl, rr, _)) => { + (ExprKind::Array(l), ExprKind::Array(r)) => self.eq_exprs(l, r), + (ExprKind::Assign(ll, lr, _), ExprKind::Assign(rl, rr, _)) => { self.inner.allow_side_effects && self.eq_expr(ll, rl) && self.eq_expr(lr, rr) }, - (&ExprKind::AssignOp(ref lo, ll, lr), &ExprKind::AssignOp(ref ro, rl, rr)) => { + (ExprKind::AssignOp(lo, ll, lr), ExprKind::AssignOp(ro, rl, rr)) => { self.inner.allow_side_effects && lo.node == ro.node && self.eq_expr(ll, rl) && self.eq_expr(lr, rr) }, - (&ExprKind::Block(l, _), &ExprKind::Block(r, _)) => self.eq_block(l, r), - (&ExprKind::Binary(l_op, ll, lr), &ExprKind::Binary(r_op, rl, rr)) => { + (ExprKind::Block(l, _), ExprKind::Block(r, _)) => self.eq_block(l, r), + (ExprKind::Binary(l_op, ll, lr), ExprKind::Binary(r_op, rl, rr)) => { l_op.node == r_op.node && self.eq_expr(ll, rl) && self.eq_expr(lr, rr) || swap_binop(l_op.node, ll, lr).is_some_and(|(l_op, ll, lr)| { l_op == r_op.node && self.eq_expr(ll, rl) && self.eq_expr(lr, rr) }) }, - (&ExprKind::Break(li, ref le), &ExprKind::Break(ri, ref re)) => { + (ExprKind::Break(li, le), ExprKind::Break(ri, re)) => { both(li.label.as_ref(), ri.label.as_ref(), |l, r| l.ident.name == r.ident.name) && both(le.as_ref(), re.as_ref(), |l, r| self.eq_expr(l, r)) }, - (&ExprKind::Call(l_fun, l_args), &ExprKind::Call(r_fun, r_args)) => { + (ExprKind::Call(l_fun, l_args), ExprKind::Call(r_fun, r_args)) => { self.inner.allow_side_effects && self.eq_expr(l_fun, r_fun) && self.eq_exprs(l_args, r_args) }, - (&ExprKind::Cast(lx, lt), &ExprKind::Cast(rx, rt)) => { + (ExprKind::Cast(lx, lt), ExprKind::Cast(rx, rt)) => { self.eq_expr(lx, rx) && self.eq_ty(lt, rt) }, - (&ExprKind::Closure(_l), &ExprKind::Closure(_r)) => false, - (&ExprKind::ConstBlock(lb), &ExprKind::ConstBlock(rb)) => self.eq_body(lb.body, rb.body), - (&ExprKind::Continue(li), &ExprKind::Continue(ri)) => { + (ExprKind::Closure(_l), ExprKind::Closure(_r)) => false, + (ExprKind::ConstBlock(lb), ExprKind::ConstBlock(rb)) => self.eq_body(lb.body, rb.body), + (ExprKind::Continue(li), ExprKind::Continue(ri)) => { both(li.label.as_ref(), ri.label.as_ref(), |l, r| l.ident.name == r.ident.name) }, - (&ExprKind::DropTemps(le), &ExprKind::DropTemps(re)) => self.eq_expr(le, re), - (&ExprKind::Field(l_f_exp, ref l_f_ident), &ExprKind::Field(r_f_exp, ref r_f_ident)) => { + (ExprKind::DropTemps(le), ExprKind::DropTemps(re)) => self.eq_expr(le, re), + (ExprKind::Field(l_f_exp, l_f_ident), ExprKind::Field(r_f_exp, r_f_ident)) => { l_f_ident.name == r_f_ident.name && self.eq_expr(l_f_exp, r_f_exp) }, - (&ExprKind::Index(la, li, _), &ExprKind::Index(ra, ri, _)) => self.eq_expr(la, ra) && self.eq_expr(li, ri), - (&ExprKind::If(lc, lt, ref le), &ExprKind::If(rc, rt, ref re)) => { + (ExprKind::Index(la, li, _), ExprKind::Index(ra, ri, _)) => self.eq_expr(la, ra) && self.eq_expr(li, ri), + (ExprKind::If(lc, lt, le), ExprKind::If(rc, rt, re)) => { self.eq_expr(lc, rc) && self.eq_expr(lt, rt) && both(le.as_ref(), re.as_ref(), |l, r| self.eq_expr(l, r)) }, - (&ExprKind::Let(l), &ExprKind::Let(r)) => { + (ExprKind::Let(l), ExprKind::Let(r)) => { self.eq_pat(l.pat, r.pat) && both(l.ty.as_ref(), r.ty.as_ref(), |l, r| self.eq_ty(l, r)) && self.eq_expr(l.init, r.init) }, (ExprKind::Lit(l), ExprKind::Lit(r)) => l.node == r.node, - (&ExprKind::Loop(lb, ref ll, ref lls, _), &ExprKind::Loop(rb, ref rl, ref rls, _)) => { + (ExprKind::Loop(lb, ll, lls, _), ExprKind::Loop(rb, rl, rls, _)) => { lls == rls && self.eq_block(lb, rb) && both(ll.as_ref(), rl.as_ref(), |l, r| l.ident.name == r.ident.name) }, - (&ExprKind::Match(le, la, ref ls), &ExprKind::Match(re, ra, ref rs)) => { + (ExprKind::Match(le, la, ls), ExprKind::Match(re, ra, rs)) => { (ls == rs || (matches!((ls, rs), (TryDesugar(_), TryDesugar(_))))) && self.eq_expr(le, re) && over(la, ra, |l, r| { @@ -362,27 +362,27 @@ impl HirEqInterExpr<'_, '_, '_> { }) }, ( - &ExprKind::MethodCall(l_path, l_receiver, l_args, _), - &ExprKind::MethodCall(r_path, r_receiver, r_args, _), + ExprKind::MethodCall(l_path, l_receiver, l_args, _), + ExprKind::MethodCall(r_path, r_receiver, r_args, _), ) => { self.inner.allow_side_effects && self.eq_path_segment(l_path, r_path) && self.eq_expr(l_receiver, r_receiver) && self.eq_exprs(l_args, r_args) }, - (&ExprKind::UnsafeBinderCast(lkind, le, None), &ExprKind::UnsafeBinderCast(rkind, re, None)) => + (ExprKind::UnsafeBinderCast(lkind, le, None), ExprKind::UnsafeBinderCast(rkind, re, None)) => lkind == rkind && self.eq_expr(le, re), - (&ExprKind::UnsafeBinderCast(lkind, le, Some(lt)), &ExprKind::UnsafeBinderCast(rkind, re, Some(rt))) => + (ExprKind::UnsafeBinderCast(lkind, le, Some(lt)), ExprKind::UnsafeBinderCast(rkind, re, Some(rt))) => lkind == rkind && self.eq_expr(le, re) && self.eq_ty(lt, rt), - (&ExprKind::OffsetOf(l_container, l_fields), &ExprKind::OffsetOf(r_container, r_fields)) => { + (ExprKind::OffsetOf(l_container, l_fields), ExprKind::OffsetOf(r_container, r_fields)) => { self.eq_ty(l_container, r_container) && over(l_fields, r_fields, |l, r| l.name == r.name) }, (ExprKind::Path(l), ExprKind::Path(r)) => self.eq_qpath(l, r), - (&ExprKind::Repeat(le, ll), &ExprKind::Repeat(re, rl)) => { + (ExprKind::Repeat(le, ll), ExprKind::Repeat(re, rl)) => { self.eq_expr(le, re) && self.eq_const_arg(ll, rl) }, (ExprKind::Ret(l), ExprKind::Ret(r)) => both(l.as_ref(), r.as_ref(), |l, r| self.eq_expr(l, r)), - (&ExprKind::Struct(l_path, lf, ref lo), &ExprKind::Struct(r_path, rf, ref ro)) => { + (ExprKind::Struct(l_path, lf, lo), ExprKind::Struct(r_path, rf, ro)) => { self.eq_qpath(l_path, r_path) && match (lo, ro) { (StructTailExpr::Base(l),StructTailExpr::Base(r)) => self.eq_expr(l, r), @@ -392,58 +392,58 @@ impl HirEqInterExpr<'_, '_, '_> { } && over(lf, rf, |l, r| self.eq_expr_field(l, r)) }, - (&ExprKind::Tup(l_tup), &ExprKind::Tup(r_tup)) => self.eq_exprs(l_tup, r_tup), - (&ExprKind::Use(l_expr, _), &ExprKind::Use(r_expr, _)) => self.eq_expr(l_expr, r_expr), - (&ExprKind::Type(le, lt), &ExprKind::Type(re, rt)) => self.eq_expr(le, re) && self.eq_ty(lt, rt), - (&ExprKind::Unary(l_op, le), &ExprKind::Unary(r_op, re)) => l_op == r_op && self.eq_expr(le, re), - (&ExprKind::Yield(le, _), &ExprKind::Yield(re, _)) => return self.eq_expr(le, re), + (ExprKind::Tup(l_tup), ExprKind::Tup(r_tup)) => self.eq_exprs(l_tup, r_tup), + (ExprKind::Use(l_expr, _), ExprKind::Use(r_expr, _)) => self.eq_expr(l_expr, r_expr), + (ExprKind::Type(le, lt), ExprKind::Type(re, rt)) => self.eq_expr(le, re) && self.eq_ty(lt, rt), + (ExprKind::Unary(l_op, le), ExprKind::Unary(r_op, re)) => l_op == r_op && self.eq_expr(le, re), + (ExprKind::Yield(le, _), ExprKind::Yield(re, _)) => return self.eq_expr(le, re), ( // Else branches for branches above, grouped as per `match_same_arms`. - | &ExprKind::AddrOf(..) - | &ExprKind::Array(..) - | &ExprKind::Assign(..) - | &ExprKind::AssignOp(..) - | &ExprKind::Binary(..) - | &ExprKind::Become(..) - | &ExprKind::Block(..) - | &ExprKind::Break(..) - | &ExprKind::Call(..) - | &ExprKind::Cast(..) - | &ExprKind::ConstBlock(..) - | &ExprKind::Continue(..) - | &ExprKind::DropTemps(..) - | &ExprKind::Field(..) - | &ExprKind::Index(..) - | &ExprKind::If(..) - | &ExprKind::Let(..) - | &ExprKind::Lit(..) - | &ExprKind::Loop(..) - | &ExprKind::Match(..) - | &ExprKind::MethodCall(..) - | &ExprKind::OffsetOf(..) - | &ExprKind::Path(..) - | &ExprKind::Repeat(..) - | &ExprKind::Ret(..) - | &ExprKind::Struct(..) - | &ExprKind::Tup(..) - | &ExprKind::Use(..) - | &ExprKind::Type(..) - | &ExprKind::Unary(..) - | &ExprKind::Yield(..) - | &ExprKind::UnsafeBinderCast(..) + | ExprKind::AddrOf(..) + | ExprKind::Array(..) + | ExprKind::Assign(..) + | ExprKind::AssignOp(..) + | ExprKind::Binary(..) + | ExprKind::Become(..) + | ExprKind::Block(..) + | ExprKind::Break(..) + | ExprKind::Call(..) + | ExprKind::Cast(..) + | ExprKind::ConstBlock(..) + | ExprKind::Continue(..) + | ExprKind::DropTemps(..) + | ExprKind::Field(..) + | ExprKind::Index(..) + | ExprKind::If(..) + | ExprKind::Let(..) + | ExprKind::Lit(..) + | ExprKind::Loop(..) + | ExprKind::Match(..) + | ExprKind::MethodCall(..) + | ExprKind::OffsetOf(..) + | ExprKind::Path(..) + | ExprKind::Repeat(..) + | ExprKind::Ret(..) + | ExprKind::Struct(..) + | ExprKind::Tup(..) + | ExprKind::Use(..) + | ExprKind::Type(..) + | ExprKind::Unary(..) + | ExprKind::Yield(..) + | ExprKind::UnsafeBinderCast(..) // --- Special cases that do not have a positive branch. // `Err` represents an invalid expression, so let's never assume that // an invalid expressions is equal to anything. - | &ExprKind::Err(..) + | ExprKind::Err(..) // For the time being, we always consider that two closures are unequal. // This behavior may change in the future. - | &ExprKind::Closure(..) + | ExprKind::Closure(..) // For the time being, we always consider that two instances of InlineAsm are different. // This behavior may change in the future. - | &ExprKind::InlineAsm(_) + | ExprKind::InlineAsm(_) , _ ) => false, }; @@ -494,11 +494,11 @@ impl HirEqInterExpr<'_, '_, '_> { fn eq_pat_expr(&mut self, left: &PatExpr<'_>, right: &PatExpr<'_>) -> bool { match (&left.kind, &right.kind) { ( - &PatExprKind::Lit { + PatExprKind::Lit { lit: left, negated: left_neg, }, - &PatExprKind::Lit { + PatExprKind::Lit { lit: right, negated: right_neg, }, @@ -512,47 +512,47 @@ impl HirEqInterExpr<'_, '_, '_> { /// Checks whether two patterns are the same. fn eq_pat(&mut self, left: &Pat<'_>, right: &Pat<'_>) -> bool { match (&left.kind, &right.kind) { - (&PatKind::Box(l), &PatKind::Box(r)) => self.eq_pat(l, r), - (&PatKind::Struct(ref lp, la, ..), &PatKind::Struct(ref rp, ra, ..)) => { + (PatKind::Box(l), PatKind::Box(r)) => self.eq_pat(l, r), + (PatKind::Struct(lp, la, ..), PatKind::Struct(rp, ra, ..)) => { self.eq_qpath(lp, rp) && over(la, ra, |l, r| self.eq_pat_field(l, r)) }, - (&PatKind::TupleStruct(ref lp, la, ls), &PatKind::TupleStruct(ref rp, ra, rs)) => { + (PatKind::TupleStruct(lp, la, ls), PatKind::TupleStruct(rp, ra, rs)) => { self.eq_qpath(lp, rp) && over(la, ra, |l, r| self.eq_pat(l, r)) && ls == rs }, - (&PatKind::Binding(lb, li, _, ref lp), &PatKind::Binding(rb, ri, _, ref rp)) => { + (PatKind::Binding(lb, li, _, lp), PatKind::Binding(rb, ri, _, rp)) => { let eq = lb == rb && both(lp.as_ref(), rp.as_ref(), |l, r| self.eq_pat(l, r)); if eq { - self.locals.insert(li, ri); + self.locals.insert(*li, *ri); } eq }, - (&PatKind::Expr(l), &PatKind::Expr(r)) => self.eq_pat_expr(l, r), - (&PatKind::Tuple(l, ls), &PatKind::Tuple(r, rs)) => ls == rs && over(l, r, |l, r| self.eq_pat(l, r)), - (&PatKind::Range(ref ls, ref le, li), &PatKind::Range(ref rs, ref re, ri)) => { + (PatKind::Expr(l), PatKind::Expr(r)) => self.eq_pat_expr(l, r), + (PatKind::Tuple(l, ls), PatKind::Tuple(r, rs)) => ls == rs && over(l, r, |l, r| self.eq_pat(l, r)), + (PatKind::Range(ls, le, li), PatKind::Range(rs, re, ri)) => { both(ls.as_ref(), rs.as_ref(), |a, b| self.eq_pat_expr(a, b)) && both(le.as_ref(), re.as_ref(), |a, b| self.eq_pat_expr(a, b)) && (li == ri) }, - (&PatKind::Ref(le, ref lm), &PatKind::Ref(re, ref rm)) => lm == rm && self.eq_pat(le, re), - (&PatKind::Slice(ls, ref li, le), &PatKind::Slice(rs, ref ri, re)) => { + (PatKind::Ref(le, lm), PatKind::Ref(re, rm)) => lm == rm && self.eq_pat(le, re), + (PatKind::Slice(ls, li, le), PatKind::Slice(rs, ri, re)) => { over(ls, rs, |l, r| self.eq_pat(l, r)) && over(le, re, |l, r| self.eq_pat(l, r)) && both(li.as_ref(), ri.as_ref(), |l, r| self.eq_pat(l, r)) }, - (&PatKind::Wild, &PatKind::Wild) => true, + (PatKind::Wild, PatKind::Wild) => true, _ => false, } } fn eq_qpath(&mut self, left: &QPath<'_>, right: &QPath<'_>) -> bool { match (left, right) { - (&QPath::Resolved(ref lty, lpath), &QPath::Resolved(ref rty, rpath)) => { + (QPath::Resolved(lty, lpath), QPath::Resolved(rty, rpath)) => { both(lty.as_ref(), rty.as_ref(), |l, r| self.eq_ty(l, r)) && self.eq_path(lpath, rpath) }, - (&QPath::TypeRelative(lty, lseg), &QPath::TypeRelative(rty, rseg)) => { + (QPath::TypeRelative(lty, lseg), QPath::TypeRelative(rty, rseg)) => { self.eq_ty(lty, rty) && self.eq_path_segment(lseg, rseg) }, - (&QPath::LangItem(llang_item, ..), &QPath::LangItem(rlang_item, ..)) => llang_item == rlang_item, + (QPath::LangItem(llang_item, ..), QPath::LangItem(rlang_item, ..)) => llang_item == rlang_item, _ => false, } } @@ -611,15 +611,15 @@ impl HirEqInterExpr<'_, '_, '_> { pub fn eq_ty(&mut self, left: &Ty<'_>, right: &Ty<'_>) -> bool { match (&left.kind, &right.kind) { - (&TyKind::Slice(l_vec), &TyKind::Slice(r_vec)) => self.eq_ty(l_vec, r_vec), - (&TyKind::Array(lt, ll), &TyKind::Array(rt, rl)) => self.eq_ty(lt, rt) && self.eq_const_arg(ll, rl), + (TyKind::Slice(l_vec), TyKind::Slice(r_vec)) => self.eq_ty(l_vec, r_vec), + (TyKind::Array(lt, ll), TyKind::Array(rt, rl)) => self.eq_ty(lt, rt) && self.eq_const_arg(ll, rl), (TyKind::Ptr(l_mut), TyKind::Ptr(r_mut)) => l_mut.mutbl == r_mut.mutbl && self.eq_ty(l_mut.ty, r_mut.ty), (TyKind::Ref(_, l_rmut), TyKind::Ref(_, r_rmut)) => { l_rmut.mutbl == r_rmut.mutbl && self.eq_ty(l_rmut.ty, r_rmut.ty) }, (TyKind::Path(l), TyKind::Path(r)) => self.eq_qpath(l, r), - (&TyKind::Tup(l), &TyKind::Tup(r)) => over(l, r, |l, r| self.eq_ty(l, r)), - (&TyKind::Infer(()), &TyKind::Infer(())) => true, + (TyKind::Tup(l), TyKind::Tup(r)) => over(l, r, |l, r| self.eq_ty(l, r)), + (TyKind::Infer(()), TyKind::Infer(())) => true, _ => false, } } @@ -853,9 +853,9 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { std::mem::discriminant(&e.kind).hash(&mut self.s); - match e.kind { + match &e.kind { ExprKind::AddrOf(kind, m, e) => { - std::mem::discriminant(&kind).hash(&mut self.s); + std::mem::discriminant(kind).hash(&mut self.s); m.hash(&mut self.s); self.hash_expr(e); }, @@ -871,7 +871,7 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { self.hash_expr(l); self.hash_expr(r); }, - ExprKind::AssignOp(ref o, l, r) => { + ExprKind::AssignOp(o, l, r) => { std::mem::discriminant(&o.node).hash(&mut self.s); self.hash_expr(l); self.hash_expr(r); @@ -887,11 +887,11 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { self.hash_expr(l); self.hash_expr(r); }, - ExprKind::Break(i, ref j) => { + ExprKind::Break(i, j) => { if let Some(i) = i.label { self.hash_name(i.ident.name); } - if let Some(j) = *j { + if let Some(j) = j { self.hash_expr(j); } }, @@ -903,20 +903,20 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { self.hash_expr(e); self.hash_ty(ty); }, - ExprKind::Closure(&Closure { + ExprKind::Closure(Closure { capture_clause, body, .. }) => { - std::mem::discriminant(&capture_clause).hash(&mut self.s); + std::mem::discriminant(capture_clause).hash(&mut self.s); // closures inherit TypeckResults - self.hash_expr(self.cx.tcx.hir_body(body).value); + self.hash_expr(self.cx.tcx.hir_body(*body).value); }, - ExprKind::ConstBlock(ref l_id) => { + ExprKind::ConstBlock(l_id) => { self.hash_body(l_id.body); }, ExprKind::DropTemps(e) | ExprKind::Yield(e, _) => { self.hash_expr(e); }, - ExprKind::Field(e, ref f) => { + ExprKind::Field(e, f) => { self.hash_expr(e); self.hash_name(f.name); }, @@ -991,23 +991,23 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { ExprKind::Lit(l) => { l.node.hash(&mut self.s); }, - ExprKind::Loop(b, ref i, ..) => { + ExprKind::Loop(b, i, ..) => { self.hash_block(b); - if let Some(i) = *i { + if let Some(i) = i { self.hash_name(i.ident.name); } }, - ExprKind::If(cond, then, ref else_opt) => { + ExprKind::If(cond, then, else_opt) => { self.hash_expr(cond); self.hash_expr(then); - if let Some(e) = *else_opt { + if let Some(e) = else_opt { self.hash_expr(e); } }, - ExprKind::Match(e, arms, ref s) => { + ExprKind::Match(e, arms, s) => { self.hash_expr(e); - for arm in arms { + for arm in *arms { self.hash_pat(arm.pat); if let Some(e) = arm.guard { self.hash_expr(e); @@ -1017,38 +1017,38 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { s.hash(&mut self.s); }, - ExprKind::MethodCall(path, receiver, args, ref _fn_span) => { + ExprKind::MethodCall(path, receiver, args, _fn_span) => { self.hash_name(path.ident.name); self.hash_expr(receiver); self.hash_exprs(args); }, ExprKind::OffsetOf(container, fields) => { self.hash_ty(container); - for field in fields { + for field in *fields { self.hash_name(field.name); } }, - ExprKind::Path(ref qpath) => { + ExprKind::Path(qpath) => { self.hash_qpath(qpath); }, ExprKind::Repeat(e, len) => { self.hash_expr(e); self.hash_const_arg(len); }, - ExprKind::Ret(ref e) => { - if let Some(e) = *e { + ExprKind::Ret(e) => { + if let Some(e) = e { self.hash_expr(e); } }, - ExprKind::Struct(path, fields, ref expr) => { + ExprKind::Struct(path, fields, expr) => { self.hash_qpath(path); - for f in fields { + for f in *fields { self.hash_name(f.ident.name); self.hash_expr(f.expr); } - if let StructTailExpr::Base(e) = *expr { + if let StructTailExpr::Base(e) = expr { self.hash_expr(e); } }, @@ -1059,11 +1059,11 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { self.hash_expr(expr); }, ExprKind::Unary(lop, le) => { - std::mem::discriminant(&lop).hash(&mut self.s); + std::mem::discriminant(lop).hash(&mut self.s); self.hash_expr(le); }, ExprKind::UnsafeBinderCast(kind, expr, ty) => { - std::mem::discriminant(&kind).hash(&mut self.s); + std::mem::discriminant(kind).hash(&mut self.s); self.hash_expr(expr); if let Some(ty) = ty { self.hash_ty(ty); @@ -1084,7 +1084,7 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { } pub fn hash_qpath(&mut self, p: &QPath<'_>) { - match *p { + match p { QPath::Resolved(_, path) => { self.hash_path(path); }, @@ -1092,7 +1092,7 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { self.hash_name(path.ident.name); }, QPath::LangItem(lang_item, ..) => { - std::mem::discriminant(&lang_item).hash(&mut self.s); + std::mem::discriminant(lang_item).hash(&mut self.s); }, } // self.maybe_typeck_results.unwrap().qpath_res(p, id).hash(&mut self.s); @@ -1123,11 +1123,11 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { pub fn hash_pat(&mut self, pat: &Pat<'_>) { std::mem::discriminant(&pat.kind).hash(&mut self.s); - match pat.kind { + match &pat.kind { PatKind::Missing => unreachable!(), PatKind::Binding(BindingMode(by_ref, mutability), _, _, pat) => { - std::mem::discriminant(&by_ref).hash(&mut self.s); - std::mem::discriminant(&mutability).hash(&mut self.s); + std::mem::discriminant(by_ref).hash(&mut self.s); + std::mem::discriminant(mutability).hash(&mut self.s); if let Some(pat) = pat { self.hash_pat(pat); } @@ -1135,7 +1135,7 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { PatKind::Box(pat) | PatKind::Deref(pat) => self.hash_pat(pat), PatKind::Expr(expr) => self.hash_pat_expr(expr), PatKind::Or(pats) => { - for pat in pats { + for pat in *pats { self.hash_pat(pat); } }, @@ -1146,44 +1146,44 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { if let Some(e) = e { self.hash_pat_expr(e); } - std::mem::discriminant(&i).hash(&mut self.s); + std::mem::discriminant(i).hash(&mut self.s); }, PatKind::Ref(pat, mu) => { self.hash_pat(pat); - std::mem::discriminant(&mu).hash(&mut self.s); + std::mem::discriminant(mu).hash(&mut self.s); }, PatKind::Guard(pat, guard) => { self.hash_pat(pat); self.hash_expr(guard); }, PatKind::Slice(l, m, r) => { - for pat in l { + for pat in *l { self.hash_pat(pat); } if let Some(pat) = m { self.hash_pat(pat); } - for pat in r { + for pat in *r { self.hash_pat(pat); } }, - PatKind::Struct(ref qpath, fields, e) => { + PatKind::Struct(qpath, fields, e) => { self.hash_qpath(qpath); - for f in fields { + for f in *fields { self.hash_name(f.ident.name); self.hash_pat(f.pat); } e.hash(&mut self.s); }, PatKind::Tuple(pats, e) => { - for pat in pats { + for pat in *pats { self.hash_pat(pat); } e.hash(&mut self.s); }, - PatKind::TupleStruct(ref qpath, pats, e) => { + PatKind::TupleStruct(qpath, pats, e) => { self.hash_qpath(qpath); - for pat in pats { + for pat in *pats { self.hash_pat(pat); } e.hash(&mut self.s); @@ -1261,7 +1261,7 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { TyKind::Slice(ty) => { self.hash_ty(ty); }, - &TyKind::Array(ty, len) => { + TyKind::Array(ty, len) => { self.hash_ty(ty); self.hash_const_arg(len); }, @@ -1334,11 +1334,11 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { fn hash_generic_args(&mut self, arg_list: &[GenericArg<'_>]) { for arg in arg_list { - match *arg { + match arg { GenericArg::Lifetime(l) => self.hash_lifetime(l), GenericArg::Type(ty) => self.hash_ty(ty.as_unambig_ty()), GenericArg::Const(ca) => self.hash_const_arg(ca.as_unambig_ct()), - GenericArg::Infer(ref inf) => self.hash_ty(&inf.to_ty()), + GenericArg::Infer(inf) => self.hash_ty(&inf.to_ty()), } } } diff --git a/clippy_utils/src/lib.rs b/clippy_utils/src/lib.rs index f715fc86e4e5d..264b9b0406d0b 100644 --- a/clippy_utils/src/lib.rs +++ b/clippy_utils/src/lib.rs @@ -1,10 +1,8 @@ #![feature(array_chunks)] #![feature(box_patterns)] -#![feature(f128)] -#![feature(f16)] #![feature(if_let_guard)] -#![feature(macro_metavar_expr)] #![feature(macro_metavar_expr_concat)] +#![feature(macro_metavar_expr)] #![feature(let_chains)] #![feature(never_type)] #![feature(rustc_private)] @@ -53,9 +51,6 @@ extern crate rustc_span; extern crate rustc_trait_selection; extern crate smallvec; -#[macro_use] -pub mod sym_helper; - pub mod ast_utils; pub mod attrs; mod check_proc_macro; @@ -108,10 +103,10 @@ use rustc_hir::hir_id::{HirIdMap, HirIdSet}; use rustc_hir::intravisit::{FnKind, Visitor, walk_expr}; use rustc_hir::{ self as hir, Arm, BindingMode, Block, BlockCheckMode, Body, ByRef, Closure, ConstArgKind, ConstContext, - Destination, Expr, ExprField, ExprKind, FnDecl, FnRetTy, GenericArg, GenericArgs, HirId, Impl, ImplItem, - ImplItemKind, ImplItemRef, Item, ItemKind, LangItem, LetStmt, MatchSource, Mutability, Node, OwnerId, OwnerNode, - Param, Pat, PatExpr, PatExprKind, PatKind, Path, PathSegment, PrimTy, QPath, Stmt, StmtKind, TraitFn, TraitItem, - TraitItemKind, TraitItemRef, TraitRef, TyKind, UnOp, def, + CoroutineDesugaring, CoroutineKind, Destination, Expr, ExprField, ExprKind, FnDecl, FnRetTy, GenericArg, + GenericArgs, HirId, Impl, ImplItem, ImplItemKind, ImplItemRef, Item, ItemKind, LangItem, LetStmt, MatchSource, + Mutability, Node, OwnerId, OwnerNode, Param, Pat, PatExpr, PatExprKind, PatKind, Path, PathSegment, PrimTy, QPath, + Stmt, StmtKind, TraitFn, TraitItem, TraitItemKind, TraitItemRef, TraitRef, TyKind, UnOp, def, }; use rustc_lexer::{TokenKind, tokenize}; use rustc_lint::{LateContext, Level, Lint, LintContext}; @@ -129,6 +124,7 @@ use rustc_span::hygiene::{ExpnKind, MacroKind}; use rustc_span::source_map::SourceMap; use rustc_span::symbol::{Ident, Symbol, kw}; use rustc_span::{InnerSpan, Span}; +use source::walk_span_to_context; use visitors::{Visitable, for_each_unconsumed_temporary}; use crate::consts::{ConstEvalCtxt, Constant, mir_to_const}; @@ -370,10 +366,10 @@ pub fn is_inherent_method_call(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { /// Checks if a method is defined in an impl of a diagnostic item pub fn is_diag_item_method(cx: &LateContext<'_>, def_id: DefId, diag_item: Symbol) -> bool { - if let Some(impl_did) = cx.tcx.impl_of_method(def_id) { - if let Some(adt) = cx.tcx.type_of(impl_did).instantiate_identity().ty_adt_def() { - return cx.tcx.is_diagnostic_item(diag_item, adt.did()); - } + if let Some(impl_did) = cx.tcx.impl_of_method(def_id) + && let Some(adt) = cx.tcx.type_of(impl_did).instantiate_identity().ty_adt_def() + { + return cx.tcx.is_diagnostic_item(diag_item, adt.did()); } false } @@ -460,10 +456,10 @@ pub fn match_qpath(path: &QPath<'_>, segments: &[&str]) -> bool { QPath::Resolved(_, path) => match_path(path, segments), QPath::TypeRelative(ty, segment) => match ty.kind { TyKind::Path(ref inner_path) => { - if let [prefix @ .., end] = segments { - if match_qpath(inner_path, prefix) { - return segment.ident.name.as_str() == *end; - } + if let [prefix @ .., end] = segments + && match_qpath(inner_path, prefix) + { + return segment.ident.name.as_str() == *end; } false }, @@ -526,10 +522,10 @@ pub fn match_path(path: &Path<'_>, segments: &[&str]) -> bool { /// If the expression is a path to a local, returns the canonical `HirId` of the local. pub fn path_to_local(expr: &Expr<'_>) -> Option { - if let ExprKind::Path(QPath::Resolved(None, path)) = expr.kind { - if let Res::Local(id) = path.res { - return Some(id); - } + if let ExprKind::Path(QPath::Resolved(None, path)) = expr.kind + && let Res::Local(id) = path.res + { + return Some(id); } None } @@ -896,16 +892,14 @@ fn is_default_equivalent_ctor(cx: &LateContext<'_>, def_id: DefId, path: &QPath< sym::BinaryHeap, ]; - if let QPath::TypeRelative(_, method) = path { - if method.ident.name == sym::new { - if let Some(impl_did) = cx.tcx.impl_of_method(def_id) { - if let Some(adt) = cx.tcx.type_of(impl_did).instantiate_identity().ty_adt_def() { - return std_types_symbols.iter().any(|&symbol| { - cx.tcx.is_diagnostic_item(symbol, adt.did()) || Some(adt.did()) == cx.tcx.lang_items().string() - }); - } - } - } + if let QPath::TypeRelative(_, method) = path + && method.ident.name == sym::new + && let Some(impl_did) = cx.tcx.impl_of_method(def_id) + && let Some(adt) = cx.tcx.type_of(impl_did).instantiate_identity().ty_adt_def() + { + return std_types_symbols.iter().any(|&symbol| { + cx.tcx.is_diagnostic_item(symbol, adt.did()) || Some(adt.did()) == cx.tcx.lang_items().string() + }); } false } @@ -1030,6 +1024,7 @@ pub fn is_default_equivalent(cx: &LateContext<'_>, e: &Expr<'_>) -> bool { ExprKind::Call(from_func, [arg]) => is_default_equivalent_from(cx, from_func, arg), ExprKind::Path(qpath) => is_res_lang_ctor(cx, cx.qpath_res(qpath, e.hir_id), OptionNone), ExprKind::AddrOf(rustc_hir::BorrowKind::Ref, _, expr) => matches!(expr.kind, ExprKind::Array([])), + ExprKind::Block(Block { stmts: [], expr, .. }, _) => expr.is_some_and(|e| is_default_equivalent(cx, e)), _ => false, } } @@ -1206,12 +1201,10 @@ pub fn capture_local_usage(cx: &LateContext<'_>, e: &Expr<'_>) -> CaptureKind { .adjustments() .get(child_id) .map_or(&[][..], |x| &**x) - { - if let rustc_ty::RawPtr(_, mutability) | rustc_ty::Ref(_, _, mutability) = + && let rustc_ty::RawPtr(_, mutability) | rustc_ty::Ref(_, _, mutability) = *adjust.last().map_or(target, |a| a.target).kind() - { - return CaptureKind::Ref(mutability); - } + { + return CaptureKind::Ref(mutability); } match parent { @@ -1739,10 +1732,10 @@ pub fn is_integer_const(cx: &LateContext<'_>, e: &Expr<'_>, value: u128) -> bool /// Checks whether the given expression is a constant literal of the given value. pub fn is_integer_literal(expr: &Expr<'_>, value: u128) -> bool { // FIXME: use constant folding - if let ExprKind::Lit(spanned) = expr.kind { - if let LitKind::Int(v, _) = spanned.node { - return v == value; - } + if let ExprKind::Lit(spanned) = expr.kind + && let LitKind::Int(v, _) = spanned.node + { + return v == value; } false } @@ -1779,10 +1772,10 @@ pub fn is_expn_of(mut span: Span, name: &str) -> Option { let data = span.ctxt().outer_expn_data(); let new_span = data.call_site; - if let ExpnKind::Macro(MacroKind::Bang, mac_name) = data.kind { - if mac_name.as_str() == name { - return Some(new_span); - } + if let ExpnKind::Macro(MacroKind::Bang, mac_name) = data.kind + && mac_name.as_str() == name + { + return Some(new_span); } span = new_span; @@ -1808,10 +1801,10 @@ pub fn is_direct_expn_of(span: Span, name: &str) -> Option { let data = span.ctxt().outer_expn_data(); let new_span = data.call_site; - if let ExpnKind::Macro(MacroKind::Bang, mac_name) = data.kind { - if mac_name.as_str() == name { - return Some(new_span); - } + if let ExpnKind::Macro(MacroKind::Bang, mac_name) = data.kind + && mac_name.as_str() == name + { + return Some(new_span); } } @@ -1832,15 +1825,15 @@ pub fn nth_arg<'tcx>(cx: &LateContext<'tcx>, fn_def_id: OwnerId, nth: usize) -> /// Checks if an expression is constructing a tuple-like enum variant or struct pub fn is_ctor_or_promotable_const_function(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { - if let ExprKind::Call(fun, _) = expr.kind { - if let ExprKind::Path(ref qp) = fun.kind { - let res = cx.qpath_res(qp, fun.hir_id); - return match res { - Res::Def(DefKind::Variant | DefKind::Ctor(..), ..) => true, - Res::Def(_, def_id) => cx.tcx.is_promotable_const_fn(def_id), - _ => false, - }; - } + if let ExprKind::Call(fun, _) = expr.kind + && let ExprKind::Path(ref qp) = fun.kind + { + let res = cx.qpath_res(qp, fun.hir_id); + return match res { + Res::Def(DefKind::Variant | DefKind::Ctor(..), ..) => true, + Res::Def(_, def_id) => cx.tcx.is_promotable_const_fn(def_id), + _ => false, + }; } false } @@ -1914,10 +1907,10 @@ pub fn is_self(slf: &Param<'_>) -> bool { } pub fn is_self_ty(slf: &hir::Ty<'_>) -> bool { - if let TyKind::Path(QPath::Resolved(None, path)) = slf.kind { - if let Res::SelfTyParam { .. } | Res::SelfTyAlias { .. } = path.res { - return true; - } + if let TyKind::Path(QPath::Resolved(None, path)) = slf.kind + && let Res::SelfTyParam { .. } | Res::SelfTyAlias { .. } = path.res + { + return true; } false } @@ -2122,10 +2115,10 @@ pub fn if_sequence<'tcx>(mut expr: &'tcx Expr<'tcx>) -> (Vec<&'tcx Expr<'tcx>>, } // final `else {..}` - if !blocks.is_empty() { - if let ExprKind::Block(block, _) = expr.kind { - blocks.push(block); - } + if !blocks.is_empty() + && let ExprKind::Block(block, _) = expr.kind + { + blocks.push(block); } (conds, blocks) @@ -2140,26 +2133,34 @@ pub fn is_async_fn(kind: FnKind<'_>) -> bool { } } -/// Peels away all the compiler generated code surrounding the body of an async function, -pub fn get_async_fn_body<'tcx>(tcx: TyCtxt<'tcx>, body: &Body<'_>) -> Option<&'tcx Expr<'tcx>> { - if let ExprKind::Closure(&Closure { body, .. }) = body.value.kind { - if let ExprKind::Block( +/// Peels away all the compiler generated code surrounding the body of an async closure. +pub fn get_async_closure_expr<'tcx>(tcx: TyCtxt<'tcx>, expr: &Expr<'_>) -> Option<&'tcx Expr<'tcx>> { + if let ExprKind::Closure(&Closure { + body, + kind: hir::ClosureKind::Coroutine(CoroutineKind::Desugared(CoroutineDesugaring::Async, _)), + .. + }) = expr.kind + && let ExprKind::Block( Block { - stmts: [], expr: Some(Expr { - kind: ExprKind::DropTemps(expr), + kind: ExprKind::DropTemps(inner_expr), .. }), .. }, _, ) = tcx.hir_body(body).value.kind - { - return Some(expr); - } + { + Some(inner_expr) + } else { + None } - None +} + +/// Peels away all the compiler generated code surrounding the body of an async function, +pub fn get_async_fn_body<'tcx>(tcx: TyCtxt<'tcx>, body: &Body<'_>) -> Option<&'tcx Expr<'tcx>> { + get_async_closure_expr(tcx, body.value) } // check if expr is calling method or function with #[must_use] attribute @@ -2631,17 +2632,19 @@ pub fn peel_ref_operators<'hir>(cx: &LateContext<'_>, mut expr: &'hir Expr<'hir> } pub fn is_hir_ty_cfg_dependant(cx: &LateContext<'_>, ty: &hir::Ty<'_>) -> bool { - if let TyKind::Path(QPath::Resolved(_, path)) = ty.kind { - if let Res::Def(_, def_id) = path.res { - return cx.tcx.has_attr(def_id, sym::cfg_trace) || cx.tcx.has_attr(def_id, sym::cfg_attr); - } + if let TyKind::Path(QPath::Resolved(_, path)) = ty.kind + && let Res::Def(_, def_id) = path.res + { + return cx.tcx.has_attr(def_id, sym::cfg) || cx.tcx.has_attr(def_id, sym::cfg_attr); } false } static TEST_ITEM_NAMES_CACHE: OnceLock>>> = OnceLock::new(); -fn with_test_item_names(tcx: TyCtxt<'_>, module: LocalModDefId, f: impl Fn(&[Symbol]) -> bool) -> bool { +/// Apply `f()` to the set of test item names. +/// The names are sorted using the default `Symbol` ordering. +fn with_test_item_names(tcx: TyCtxt<'_>, module: LocalModDefId, f: impl FnOnce(&[Symbol]) -> bool) -> bool { let cache = TEST_ITEM_NAMES_CACHE.get_or_init(|| Mutex::new(FxHashMap::default())); let mut map: MutexGuard<'_, FxHashMap>> = cache.lock().unwrap(); let value = map.entry(module); @@ -2653,18 +2656,16 @@ fn with_test_item_names(tcx: TyCtxt<'_>, module: LocalModDefId, f: impl Fn(&[Sym if matches!(tcx.def_kind(id.owner_id), DefKind::Const) && let item = tcx.hir_item(id) && let ItemKind::Const(ident, ty, _generics, _body) = item.kind - { - if let TyKind::Path(QPath::Resolved(_, path)) = ty.kind { + && let TyKind::Path(QPath::Resolved(_, path)) = ty.kind // We could also check for the type name `test::TestDescAndFn` - if let Res::Def(DefKind::Struct, _) = path.res { - let has_test_marker = tcx - .hir_attrs(item.hir_id()) - .iter() - .any(|a| a.has_name(sym::rustc_test_marker)); - if has_test_marker { - names.push(ident.name); - } - } + && let Res::Def(DefKind::Struct, _) = path.res + { + let has_test_marker = tcx + .hir_attrs(item.hir_id()) + .iter() + .any(|a| a.has_name(sym::rustc_test_marker)); + if has_test_marker { + names.push(ident.name); } } } @@ -2685,18 +2686,37 @@ pub fn is_in_test_function(tcx: TyCtxt<'_>, id: HirId) -> bool { // Since you can nest functions we need to collect all until we leave // function scope .any(|(_id, node)| { - if let Node::Item(item) = node { - if let ItemKind::Fn { ident, .. } = item.kind { - // Note that we have sorted the item names in the visitor, - // so the binary_search gets the same as `contains`, but faster. - return names.binary_search(&ident.name).is_ok(); - } + if let Node::Item(item) = node + && let ItemKind::Fn { ident, .. } = item.kind + { + // Note that we have sorted the item names in the visitor, + // so the binary_search gets the same as `contains`, but faster. + return names.binary_search(&ident.name).is_ok(); } false }) }) } +/// Checks if `fn_def_id` has a `#[test]` attribute applied +/// +/// This only checks directly applied attributes. To see if a node has a parent function marked with +/// `#[test]` use [`is_in_test_function`]. +/// +/// Note: Add `//@compile-flags: --test` to UI tests with a `#[test]` function +pub fn is_test_function(tcx: TyCtxt<'_>, fn_def_id: LocalDefId) -> bool { + let id = tcx.local_def_id_to_hir_id(fn_def_id); + if let Node::Item(item) = tcx.hir_node(id) + && let ItemKind::Fn { ident, .. } = item.kind + { + with_test_item_names(tcx, tcx.parent_module(id), |names| { + names.binary_search(&ident.name).is_ok() + }) + } else { + false + } +} + /// Checks if `id` has a `#[cfg(test)]` attribute applied /// /// This only checks directly applied attributes, to see if a node is inside a `#[cfg(test)]` parent @@ -3728,3 +3748,20 @@ pub fn peel_hir_ty_options<'tcx>(cx: &LateContext<'tcx>, mut hir_ty: &'tcx hir:: } hir_ty } + +/// If `expr` is a desugared `.await`, return the original expression if it does not come from a +/// macro expansion. +pub fn desugar_await<'tcx>(expr: &'tcx Expr<'_>) -> Option<&'tcx Expr<'tcx>> { + if let ExprKind::Match(match_value, _, MatchSource::AwaitDesugar) = expr.kind + && let ExprKind::Call(_, [into_future_arg]) = match_value.kind + && let ctxt = expr.span.ctxt() + && for_each_expr_without_closures(into_future_arg, |e| { + walk_span_to_context(e.span, ctxt).map_or(ControlFlow::Break(()), |_| ControlFlow::Continue(())) + }) + .is_none() + { + Some(into_future_arg) + } else { + None + } +} diff --git a/clippy_utils/src/mir/mod.rs b/clippy_utils/src/mir/mod.rs index ffcfcd240ea5a..9ba644fdd20ec 100644 --- a/clippy_utils/src/mir/mod.rs +++ b/clippy_utils/src/mir/mod.rs @@ -76,7 +76,7 @@ impl<'tcx> Visitor<'tcx> for V<'_> { } if matches!( ctx, - PlaceContext::NonMutatingUse(NonMutatingUseContext::Move) + PlaceContext::NonMutatingUse(NonMutatingUseContext::Move | NonMutatingUseContext::Inspect) | PlaceContext::MutatingUse(MutatingUseContext::Borrow) ) { self.results[i].local_consume_or_mutate_locs.push(loc); diff --git a/clippy_utils/src/msrvs.rs b/clippy_utils/src/msrvs.rs index 86f4f190b950a..19061b574ff88 100644 --- a/clippy_utils/src/msrvs.rs +++ b/clippy_utils/src/msrvs.rs @@ -1,10 +1,10 @@ +use crate::sym; use rustc_ast::Attribute; use rustc_ast::attr::AttributeExt; - use rustc_attr_parsing::{RustcVersion, parse_version}; use rustc_lint::LateContext; use rustc_session::Session; -use rustc_span::{Symbol, sym}; +use rustc_span::Symbol; use serde::Deserialize; use smallvec::SmallVec; use std::iter::once; @@ -24,10 +24,10 @@ macro_rules! msrv_aliases { msrv_aliases! { 1,87,0 { OS_STR_DISPLAY, INT_MIDPOINT } 1,85,0 { UINT_FLOAT_MIDPOINT } - 1,84,0 { CONST_OPTION_AS_SLICE } + 1,84,0 { CONST_OPTION_AS_SLICE, MANUAL_DANGLING_PTR } 1,83,0 { CONST_EXTERN_FN, CONST_FLOAT_BITS_CONV, CONST_FLOAT_CLASSIFY, CONST_MUT_REFS, CONST_UNWRAP } 1,82,0 { IS_NONE_OR, REPEAT_N, RAW_REF_OP } - 1,81,0 { LINT_REASONS_STABILIZATION, ERROR_IN_CORE, EXPLICIT_SELF_TYPE_ELISION } + 1,81,0 { LINT_REASONS_STABILIZATION, ERROR_IN_CORE, EXPLICIT_SELF_TYPE_ELISION, DURATION_ABS_DIFF } 1,80,0 { BOX_INTO_ITER, LAZY_CELL } 1,77,0 { C_STR_LITERALS } 1,76,0 { PTR_FROM_REF, OPTION_RESULT_INSPECT } @@ -40,6 +40,7 @@ msrv_aliases! { 1,65,0 { LET_ELSE, POINTER_CAST_CONSTNESS } 1,63,0 { CLONE_INTO } 1,62,0 { BOOL_THEN_SOME, DEFAULT_ENUM_ATTRIBUTE, CONST_EXTERN_C_FN } + 1,60,0 { ABS_DIFF } 1,59,0 { THREAD_LOCAL_CONST_INIT } 1,58,0 { FORMAT_ARGS_CAPTURE, PATTERN_TRAIT_CHAR_ARRAY, CONST_RAW_PTR_DEREF } 1,57,0 { MAP_WHILE } @@ -63,6 +64,7 @@ msrv_aliases! { 1,35,0 { OPTION_COPIED, RANGE_CONTAINS } 1,34,0 { TRY_FROM } 1,33,0 { UNDERSCORE_IMPORTS } + 1,32,0 { CONST_IS_POWER_OF_TWO } 1,31,0 { OPTION_REPLACE } 1,30,0 { ITERATOR_FIND_MAP, TOOL_ATTRIBUTES } 1,29,0 { ITER_FLATTEN } @@ -182,8 +184,7 @@ impl MsrvStack { } fn parse_attrs(sess: &Session, attrs: &[impl AttributeExt]) -> Option { - let sym_msrv = Symbol::intern("msrv"); - let mut msrv_attrs = attrs.iter().filter(|attr| attr.path_matches(&[sym::clippy, sym_msrv])); + let mut msrv_attrs = attrs.iter().filter(|attr| attr.path_matches(&[sym::clippy, sym::msrv])); if let Some(msrv_attr) = msrv_attrs.next() { if let Some(duplicate) = msrv_attrs.next_back() { diff --git a/clippy_utils/src/paths.rs b/clippy_utils/src/paths.rs index 51d06ad9b1aa5..7f64ebd3b6437 100644 --- a/clippy_utils/src/paths.rs +++ b/clippy_utils/src/paths.rs @@ -30,9 +30,11 @@ pub const SYNTAX_CONTEXT: [&str; 3] = ["rustc_span", "hygiene", "SyntaxContext"] pub const CHAR_IS_ASCII: [&str; 5] = ["core", "char", "methods", "", "is_ascii"]; pub const IO_ERROR_NEW: [&str; 5] = ["std", "io", "error", "Error", "new"]; pub const IO_ERRORKIND_OTHER: [&str; 5] = ["std", "io", "error", "ErrorKind", "Other"]; +pub const ALIGN_OF: [&str; 3] = ["core", "mem", "align_of"]; // Paths in clippy itself pub const MSRV_STACK: [&str; 3] = ["clippy_utils", "msrvs", "MsrvStack"]; +pub const CLIPPY_SYM_MODULE: [&str; 2] = ["clippy_utils", "sym"]; // Paths in external crates #[expect(clippy::invalid_paths)] // internal lints do not know about all external crates diff --git a/clippy_utils/src/source.rs b/clippy_utils/src/source.rs index 80066e9702d34..3aa72cf5eaffd 100644 --- a/clippy_utils/src/source.rs +++ b/clippy_utils/src/source.rs @@ -142,7 +142,19 @@ pub trait SpanRangeExt: SpanRange { map_range(cx.sess().source_map(), self.into_range(), f) } - /// Extends the range to include all preceding whitespace characters. + /// Extends the range to include all preceding whitespace characters, unless there + /// are non-whitespace characters left on the same line after `self`. + /// + /// This extra condition prevents a problem when removing the '}' in: + /// ```ignore + /// ( // There was an opening bracket after the parenthesis, which has been removed + /// // This is a comment + /// }) + /// ``` + /// Removing the whitespaces, including the linefeed, before the '}', would put the + /// closing parenthesis at the end of the `// This is a comment` line, which would + /// make it part of the comment as well. In this case, it is best to keep the span + /// on the '}' alone. fn with_leading_whitespace(self, cx: &impl HasSession) -> Range { with_leading_whitespace(cx.sess().source_map(), self.into_range()) } @@ -263,10 +275,15 @@ fn map_range( } fn with_leading_whitespace(sm: &SourceMap, sp: Range) -> Range { - map_range(sm, sp.clone(), |src, range| { - Some(src.get(..range.start)?.trim_end().len()..range.end) + map_range(sm, sp, |src, range| { + let non_blank_after = src.len() - src.get(range.end..)?.trim_start().len(); + if src.get(range.end..non_blank_after)?.contains(['\r', '\n']) { + Some(src.get(..range.start)?.trim_end().len()..range.end) + } else { + Some(range) + } }) - .unwrap_or(sp) + .unwrap() } fn trim_start(sm: &SourceMap, sp: Range) -> Range { @@ -384,10 +401,10 @@ pub fn snippet_indent(sess: &impl HasSession, span: Span) -> Option { // For some reason these attributes don't have any expansion info on them, so // we have to check it this way until there is a better way. pub fn is_present_in_source(sess: &impl HasSession, span: Span) -> bool { - if let Some(snippet) = snippet_opt(sess, span) { - if snippet.is_empty() { - return false; - } + if let Some(snippet) = snippet_opt(sess, span) + && snippet.is_empty() + { + return false; } true } @@ -408,11 +425,11 @@ pub fn position_before_rarrow(s: &str) -> Option { let mut rpos = rpos; let chars: Vec = s.chars().collect(); while rpos > 1 { - if let Some(c) = chars.get(rpos - 1) { - if c.is_whitespace() { - rpos -= 1; - continue; - } + if let Some(c) = chars.get(rpos - 1) + && c.is_whitespace() + { + rpos -= 1; + continue; } break; } diff --git a/clippy_utils/src/str_utils.rs b/clippy_utils/src/str_utils.rs index 421b25a77fe8b..f0f82c8dddcf5 100644 --- a/clippy_utils/src/str_utils.rs +++ b/clippy_utils/src/str_utils.rs @@ -1,4 +1,4 @@ -/// Dealing with sting indices can be hard, this struct ensures that both the +/// Dealing with string indices can be hard, this struct ensures that both the /// character and byte index are provided for correct indexing. #[derive(Debug, Default, PartialEq, Eq)] pub struct StrIndex { @@ -165,7 +165,7 @@ pub fn camel_case_split(s: &str) -> Vec<&str> { offsets.windows(2).map(|w| &s[w[0]..w[1]]).collect() } -/// Dealing with sting comparison can be complicated, this struct ensures that both the +/// Dealing with string comparison can be complicated, this struct ensures that both the /// character and byte count are provided for correct indexing. #[derive(Debug, Default, PartialEq, Eq)] pub struct StrCount { diff --git a/clippy_utils/src/sugg.rs b/clippy_utils/src/sugg.rs index e92c0c79b2556..93dec113d31a5 100644 --- a/clippy_utils/src/sugg.rs +++ b/clippy_utils/src/sugg.rs @@ -326,7 +326,7 @@ impl<'a> Sugg<'a> { /// `self` argument of a method call /// (e.g., to build `bar.foo()` or `(1 + 2).foo()`). #[must_use] - pub fn maybe_par(self) -> Self { + pub fn maybe_paren(self) -> Self { match self { Sugg::NonParen(..) => self, // `(x)` and `(x).y()` both don't need additional parens. @@ -494,7 +494,7 @@ impl Display for ParenHelper { /// operators have the same /// precedence. pub fn make_unop(op: &str, expr: Sugg<'_>) -> Sugg<'static> { - Sugg::MaybeParen(format!("{op}{}", expr.maybe_par()).into()) + Sugg::MaybeParen(format!("{op}{}", expr.maybe_paren()).into()) } /// Builds the string for ` ` adding parenthesis when necessary. @@ -946,10 +946,9 @@ impl<'tcx> Delegate<'tcx> for DerefDelegate<'_, 'tcx> { // some items do not need explicit deref, such as array accesses, // so we mark them as already processed // i.e.: don't suggest `*sub[1..4].len()` for `|sub| sub[1..4].len() == 3` - if let ty::Ref(_, inner, _) = cmt.place.ty_before_projection(i).kind() { - if matches!(inner.kind(), ty::Ref(_, innermost, _) if innermost.is_array()) { - projections_handled = true; - } + if let ty::Ref(_, inner, _) = cmt.place.ty_before_projection(i).kind() + && matches!(inner.kind(), ty::Ref(_, innermost, _) if innermost.is_array()) { + projections_handled = true; } }, } @@ -1008,12 +1007,12 @@ mod test { } #[test] - fn binop_maybe_par() { + fn binop_maybe_paren() { let sugg = Sugg::BinOp(AssocOp::Binary(ast::BinOpKind::Add), "1".into(), "1".into()); - assert_eq!("(1 + 1)", sugg.maybe_par().to_string()); + assert_eq!("(1 + 1)", sugg.maybe_paren().to_string()); let sugg = Sugg::BinOp(AssocOp::Binary(ast::BinOpKind::Add), "(1 + 1)".into(), "(1 + 1)".into()); - assert_eq!("((1 + 1) + (1 + 1))", sugg.maybe_par().to_string()); + assert_eq!("((1 + 1) + (1 + 1))", sugg.maybe_paren().to_string()); } #[test] fn not_op() { diff --git a/clippy_utils/src/sym.rs b/clippy_utils/src/sym.rs index 9cc72a5b3aaaa..1a30b473d1063 100644 --- a/clippy_utils/src/sym.rs +++ b/clippy_utils/src/sym.rs @@ -1,23 +1,69 @@ #![allow(non_upper_case_globals)] -use rustc_span::symbol::{Symbol, PREDEFINED_SYMBOLS_COUNT}; +use rustc_span::symbol::{PREDEFINED_SYMBOLS_COUNT, Symbol}; +#[doc(no_inline)] pub use rustc_span::sym::*; +macro_rules! val { + ($name:ident) => { + stringify!($name) + }; + ($name:ident $value:literal) => { + $value + }; +} + macro_rules! generate { - ($($sym:ident,)*) => { + ($($name:ident $(: $value:literal)? ,)*) => { /// To be supplied to `rustc_interface::Config` pub const EXTRA_SYMBOLS: &[&str] = &[ - $(stringify!($sym),)* + $( + val!($name $($value)?), + )* ]; $( - pub const $sym: Symbol = Symbol::new(PREDEFINED_SYMBOLS_COUNT + ${index()}); + pub const $name: Symbol = Symbol::new(PREDEFINED_SYMBOLS_COUNT + ${index()}); )* }; } generate! { + as_bytes, + as_deref_mut, + as_deref, + as_mut, + Binary, + Cargo_toml: "Cargo.toml", + CLIPPY_ARGS, + CLIPPY_CONF_DIR, + cloned, + contains, + copied, + Current, + get, + insert, + int_roundings, + IntoIter, + is_empty, + is_ok, + is_some, + LowerExp, + LowerHex, + msrv, + Octal, + or_default, + regex, rustfmt_skip, + Start, + to_owned, unused_extern_crates, + unwrap_err, + unwrap_or_default, + UpperExp, + UpperHex, + V4, + V6, + Weak, } diff --git a/clippy_utils/src/sym_helper.rs b/clippy_utils/src/sym_helper.rs deleted file mode 100644 index f47dc80ebade8..0000000000000 --- a/clippy_utils/src/sym_helper.rs +++ /dev/null @@ -1,7 +0,0 @@ -#[macro_export] -/// Convenience wrapper around rustc's `Symbol::intern` -macro_rules! sym { - ($tt:tt) => { - rustc_span::symbol::Symbol::intern(stringify!($tt)) - }; -} diff --git a/clippy_utils/src/ty/mod.rs b/clippy_utils/src/ty/mod.rs index d33e59342a598..8db9cd593b335 100644 --- a/clippy_utils/src/ty/mod.rs +++ b/clippy_utils/src/ty/mod.rs @@ -19,9 +19,9 @@ use rustc_middle::mir::interpret::Scalar; use rustc_middle::traits::EvaluationResult; use rustc_middle::ty::layout::ValidityRequirement; use rustc_middle::ty::{ - self, AdtDef, AliasTy, AssocItem, AssocTag, Binder, BoundRegion, FnSig, GenericArg, GenericArgKind, - GenericArgsRef, GenericParamDefKind, IntTy, ParamEnv, Region, RegionKind, TraitRef, Ty, TyCtxt, TypeSuperVisitable, - TypeVisitable, TypeVisitableExt, TypeVisitor, UintTy, Upcast, VariantDef, VariantDiscr, + self, AdtDef, AliasTy, AssocItem, AssocTag, Binder, BoundRegion, FnSig, GenericArg, GenericArgKind, GenericArgsRef, + GenericParamDefKind, IntTy, ParamEnv, Region, RegionKind, TraitRef, Ty, TyCtxt, TypeSuperVisitable, TypeVisitable, + TypeVisitableExt, TypeVisitor, UintTy, Upcast, VariantDef, VariantDiscr, }; use rustc_span::symbol::Ident; use rustc_span::{DUMMY_SP, Span, Symbol, sym}; @@ -128,10 +128,10 @@ pub fn contains_ty_adt_constructor_opaque<'tcx>(cx: &LateContext<'tcx>, ty: Ty<' // For `impl Trait`, it will register a predicate of `::Assoc = U`, // so we check the term for `U`. ty::ClauseKind::Projection(projection_predicate) => { - if let ty::TermKind::Ty(ty) = projection_predicate.term.unpack() { - if contains_ty_adt_constructor_opaque_inner(cx, ty, needle, seen) { - return true; - } + if let ty::TermKind::Ty(ty) = projection_predicate.term.unpack() + && contains_ty_adt_constructor_opaque_inner(cx, ty, needle, seen) + { + return true; } }, _ => (), @@ -337,20 +337,20 @@ pub fn is_must_use_ty<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool { ty::Tuple(args) => args.iter().any(|ty| is_must_use_ty(cx, ty)), ty::Alias(ty::Opaque, AliasTy { def_id, .. }) => { for (predicate, _) in cx.tcx.explicit_item_self_bounds(def_id).skip_binder() { - if let ty::ClauseKind::Trait(trait_predicate) = predicate.kind().skip_binder() { - if cx.tcx.has_attr(trait_predicate.trait_ref.def_id, sym::must_use) { - return true; - } + if let ty::ClauseKind::Trait(trait_predicate) = predicate.kind().skip_binder() + && cx.tcx.has_attr(trait_predicate.trait_ref.def_id, sym::must_use) + { + return true; } } false }, ty::Dynamic(binder, _, _) => { for predicate in *binder { - if let ty::ExistentialPredicate::Trait(ref trait_ref) = predicate.skip_binder() { - if cx.tcx.has_attr(trait_ref.def_id, sym::must_use) { - return true; - } + if let ty::ExistentialPredicate::Trait(ref trait_ref) = predicate.skip_binder() + && cx.tcx.has_attr(trait_ref.def_id, sym::must_use) + { + return true; } } false @@ -1352,7 +1352,7 @@ pub fn get_adt_inherent_method<'a>(cx: &'a LateContext<'_>, ty: Ty<'_>, method_n } } -/// Get's the type of a field by name. +/// Gets the type of a field by name. pub fn get_field_by_name<'tcx>(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>, name: Symbol) -> Option> { match *ty.kind() { ty::Adt(def, args) if def.is_union() || def.is_struct() => def @@ -1376,3 +1376,49 @@ pub fn option_arg_ty<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Option None, } } + +/// Check if a Ty<'_> of `Iterator` contains any mutable access to non-owning types by checking if +/// it contains fields of mutable references or pointers, or references/pointers to non-`Freeze` +/// types, or `PhantomData` types containing any of the previous. This can be used to check whether +/// skipping iterating over an iterator will change its behavior. +pub fn has_non_owning_mutable_access<'tcx>(cx: &LateContext<'tcx>, iter_ty: Ty<'tcx>) -> bool { + fn normalize_ty<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Ty<'tcx> { + cx.tcx.try_normalize_erasing_regions(cx.typing_env(), ty).unwrap_or(ty) + } + + /// Check if `ty` contains mutable references or equivalent, which includes: + /// - A mutable reference/pointer. + /// - A reference/pointer to a non-`Freeze` type. + /// - A `PhantomData` type containing any of the previous. + fn has_non_owning_mutable_access_inner<'tcx>( + cx: &LateContext<'tcx>, + phantoms: &mut FxHashSet>, + ty: Ty<'tcx>, + ) -> bool { + match ty.kind() { + ty::Adt(adt_def, args) if adt_def.is_phantom_data() => { + phantoms.insert(ty) + && args + .types() + .any(|arg_ty| has_non_owning_mutable_access_inner(cx, phantoms, arg_ty)) + }, + ty::Adt(adt_def, args) => adt_def.all_fields().any(|field| { + has_non_owning_mutable_access_inner(cx, phantoms, normalize_ty(cx, field.ty(cx.tcx, args))) + }), + ty::Array(elem_ty, _) | ty::Slice(elem_ty) => has_non_owning_mutable_access_inner(cx, phantoms, *elem_ty), + ty::RawPtr(pointee_ty, mutability) | ty::Ref(_, pointee_ty, mutability) => { + mutability.is_mut() || !pointee_ty.is_freeze(cx.tcx, cx.typing_env()) + }, + ty::Closure(_, closure_args) => { + matches!(closure_args.types().next_back(), Some(captures) if has_non_owning_mutable_access_inner(cx, phantoms, captures)) + }, + ty::Tuple(tuple_args) => tuple_args + .iter() + .any(|arg_ty| has_non_owning_mutable_access_inner(cx, phantoms, arg_ty)), + _ => false, + } + } + + let mut phantoms = FxHashSet::default(); + has_non_owning_mutable_access_inner(cx, &mut phantoms, iter_ty) +} diff --git a/clippy_utils/src/usage.rs b/clippy_utils/src/usage.rs index a079fd940c009..1b049b6d12c4c 100644 --- a/clippy_utils/src/usage.rs +++ b/clippy_utils/src/usage.rs @@ -126,10 +126,10 @@ impl<'tcx> Visitor<'tcx> for BindingUsageFinder<'_, 'tcx> { type NestedFilter = nested_filter::OnlyBodies; fn visit_path(&mut self, path: &hir::Path<'tcx>, _: HirId) -> Self::Result { - if let Res::Local(id) = path.res { - if self.binding_ids.contains(&id) { - return ControlFlow::Break(()); - } + if let Res::Local(id) = path.res + && self.binding_ids.contains(&id) + { + return ControlFlow::Break(()); } ControlFlow::Continue(()) diff --git a/clippy_utils/src/visitors.rs b/clippy_utils/src/visitors.rs index 63dd00f2de0fb..fc6e30a980476 100644 --- a/clippy_utils/src/visitors.rs +++ b/clippy_utils/src/visitors.rs @@ -297,10 +297,10 @@ where /// Checks if the given resolved path is used in the given body. pub fn is_res_used(cx: &LateContext<'_>, res: Res, body: BodyId) -> bool { for_each_expr(cx, cx.tcx.hir_body(body).value, |e| { - if let ExprKind::Path(p) = &e.kind { - if cx.qpath_res(p, e.hir_id) == res { - return ControlFlow::Break(()); - } + if let ExprKind::Path(p) = &e.kind + && cx.qpath_res(p, e.hir_id) == res + { + return ControlFlow::Break(()); } ControlFlow::Continue(()) }) diff --git a/lintcheck/ci-config/clippy.toml b/lintcheck/ci-config/clippy.toml new file mode 100644 index 0000000000000..9853465c83f00 --- /dev/null +++ b/lintcheck/ci-config/clippy.toml @@ -0,0 +1,7 @@ +# Configuration applied when running lintcheck from the CI +# +# The CI will set the `CLIPPY_CONF_DIR` environment variable +# to `$PWD/lintcheck/ci-config`. + +avoid-breaking-exported-api = false +lint-commented-code = false diff --git a/lintcheck/src/main.rs b/lintcheck/src/main.rs index 8d0d41ab9450f..fe488ef89da1f 100644 --- a/lintcheck/src/main.rs +++ b/lintcheck/src/main.rs @@ -120,14 +120,17 @@ impl Crate { if config.perf { cmd = Command::new("perf"); + let perf_data_filename = get_perf_data_filename(&self.path); cmd.args(&[ "record", "-e", "instructions", // Only count instructions "-g", // Enable call-graph, useful for flamegraphs and produces richer reports "--quiet", // Do not tamper with lintcheck's normal output + "--compression-level=22", + "--freq=3000", // Slow down program to capture all events "-o", - "perf.data", + &perf_data_filename, "--", "cargo", ]); @@ -165,7 +168,7 @@ impl Crate { return Vec::new(); } - if !config.fix { + if !config.fix && !config.perf { cmd.arg("--message-format=json"); } @@ -203,6 +206,11 @@ impl Crate { return Vec::new(); } + // We don't want to keep target directories if benchmarking + if config.perf { + let _ = fs::remove_dir_all(&shared_target_dir); + } + // get all clippy warnings and ICEs let mut entries: Vec = Message::parse_stream(stdout.as_bytes()) .filter_map(|msg| match msg { @@ -441,6 +449,35 @@ fn lintcheck(config: LintcheckConfig) { fs::write(&config.lintcheck_results_path, text).unwrap(); } +/// Traverse a directory looking for `perf.data.` files, and adds one +/// to the most recent of those files, returning the new most recent `perf.data` +/// file name. +fn get_perf_data_filename(source_path: &Path) -> String { + if source_path.join("perf.data").exists() { + let mut max_number = 0; + fs::read_dir(source_path) + .unwrap() + .filter_map(Result::ok) + .filter(|path| { + path.file_name() + .as_os_str() + .to_string_lossy() // We don't care about data loss, as we're checking for equality + .starts_with("perf.data") + }) + .for_each(|path| { + let file_name = path.file_name(); + let file_name = file_name.as_os_str().to_str().unwrap().split('.').next_back().unwrap(); + if let Ok(parsed_file_name) = file_name.parse::() + && parsed_file_name >= max_number + { + max_number = parsed_file_name + 1; + } + }); + return format!("perf.data.{max_number}"); + } + String::from("perf.data") +} + /// Returns the path to the Clippy project directory #[must_use] fn clippy_project_root() -> &'static Path { diff --git a/lintcheck/src/recursive.rs b/lintcheck/src/recursive.rs index 57073f523648e..6406b2dcb643b 100644 --- a/lintcheck/src/recursive.rs +++ b/lintcheck/src/recursive.rs @@ -64,7 +64,7 @@ fn process_stream( // It's 99% likely that dependencies compiled with recursive mode are on crates.io // and therefore on docs.rs. This links to the sources directly, do avoid invalid - // links due to remaped paths. See rust-lang/docs.rs#2551 for more details. + // links due to remapped paths. See rust-lang/docs.rs#2551 for more details. let base_url = format!( "https://docs.rs/crate/{}/{}/source/src/{{file}}#{{line}}", driver_info.package_name, driver_info.version diff --git a/rust-toolchain b/rust-toolchain.toml similarity index 85% rename from rust-toolchain rename to rust-toolchain.toml index fcaeedc9a66b5..d2f79da1a541b 100644 --- a/rust-toolchain +++ b/rust-toolchain.toml @@ -1,6 +1,6 @@ [toolchain] # begin autogenerated nightly -channel = "nightly-2025-03-20" +channel = "nightly-2025-04-22" # end autogenerated nightly components = ["cargo", "llvm-tools", "rust-src", "rust-std", "rustc", "rustc-dev", "rustfmt"] profile = "minimal" diff --git a/rustc_tools_util/src/lib.rs b/rustc_tools_util/src/lib.rs index 423154a69fa0b..b45edf2345585 100644 --- a/rustc_tools_util/src/lib.rs +++ b/rustc_tools_util/src/lib.rs @@ -121,7 +121,7 @@ fn get_output(cmd: &str, args: &[&str]) -> Option { pub fn rerun_if_git_changes() -> Option<()> { // Make sure we get rerun when the git commit changes. // We want to watch two files: HEAD, which tracks which branch we are on, - // and the file for that branch that tracks which commit is is on. + // and the file for that branch that tracks which commit is checked out. // First, find the `HEAD` file. This should work even with worktrees. let git_head_file = PathBuf::from(get_output("git", &["rev-parse", "--git-path", "HEAD"])?); diff --git a/src/driver.rs b/src/driver.rs index df9c4e8e6ae9a..87ca9c5beddfb 100644 --- a/src/driver.rs +++ b/src/driver.rs @@ -14,6 +14,7 @@ extern crate rustc_interface; extern crate rustc_session; extern crate rustc_span; +use clippy_utils::sym; use rustc_interface::interface; use rustc_session::EarlyDiagCtxt; use rustc_session::config::ErrorOutputType; @@ -78,7 +79,7 @@ fn track_clippy_args(psess: &mut ParseSess, args_env_var: Option<&str>) { psess .env_depinfo .get_mut() - .insert((Symbol::intern("CLIPPY_ARGS"), args_env_var.map(Symbol::intern))); + .insert((sym::CLIPPY_ARGS, args_env_var.map(Symbol::intern))); } /// Track files that may be accessed at runtime in `file_depinfo` so that cargo will re-run clippy @@ -89,7 +90,7 @@ fn track_files(psess: &mut ParseSess) { // Used by `clippy::cargo` lints and to determine the MSRV. `cargo clippy` executes `clippy-driver` // with the current directory set to `CARGO_MANIFEST_DIR` so a relative path is fine if Path::new("Cargo.toml").exists() { - file_depinfo.insert(Symbol::intern("Cargo.toml")); + file_depinfo.insert(sym::Cargo_toml); } // `clippy.toml` will be automatically tracked as it's loaded with `sess.source_map().load_file()` @@ -145,7 +146,7 @@ impl rustc_driver::Callbacks for ClippyCallbacks { // Trigger a rebuild if CLIPPY_CONF_DIR changes. The value must be a valid string so // changes between dirs that are invalid UTF-8 will not trigger rebuilds psess.env_depinfo.get_mut().insert(( - Symbol::intern("CLIPPY_CONF_DIR"), + sym::CLIPPY_CONF_DIR, env::var("CLIPPY_CONF_DIR").ok().map(|dir| Symbol::intern(&dir)), )); })); @@ -158,9 +159,10 @@ impl rustc_driver::Callbacks for ClippyCallbacks { let conf = clippy_config::Conf::read(sess, &conf_path); clippy_lints::register_lints(lint_store, conf); - clippy_lints::register_pre_expansion_lints(lint_store, conf); + #[cfg(feature = "internal")] + clippy_lints_internal::register_lints(lint_store); })); - config.extra_symbols = clippy_utils::sym::EXTRA_SYMBOLS.into(); + config.extra_symbols = sym::EXTRA_SYMBOLS.into(); // FIXME: #4825; This is required, because Clippy lints that are based on MIR have to be // run on the unoptimized MIR. On the other hand this results in some false negatives. If @@ -208,12 +210,12 @@ pub fn main() { // Beside checking for existence of `--sysroot` on the command line, we need to // check for the arg files that are prefixed with @ as well to be consistent with rustc for arg in args.iter() { - if let Some(arg_file_path) = arg.strip_prefix('@') { - if let Ok(arg_file) = read_to_string(arg_file_path) { - let split_arg_file: Vec = arg_file.lines().map(ToString::to_string).collect(); - if has_arg(&split_arg_file, "--sysroot") { - return true; - } + if let Some(arg_file_path) = arg.strip_prefix('@') + && let Ok(arg_file) = read_to_string(arg_file_path) + { + let split_arg_file: Vec = arg_file.lines().map(ToString::to_string).collect(); + if has_arg(&split_arg_file, "--sysroot") { + return true; } } } @@ -222,10 +224,10 @@ pub fn main() { let sys_root_env = std::env::var("SYSROOT").ok(); let pass_sysroot_env_if_given = |args: &mut Vec, sys_root_env| { - if let Some(sys_root) = sys_root_env { - if !has_sysroot_arg(args) { - args.extend(vec!["--sysroot".into(), sys_root]); - } + if let Some(sys_root) = sys_root_env + && !has_sysroot_arg(args) + { + args.extend(vec!["--sysroot".into(), sys_root]); } }; diff --git a/tests/clippy.toml b/tests/clippy.toml index 5eb7ac0354198..91a2e55180b97 100644 --- a/tests/clippy.toml +++ b/tests/clippy.toml @@ -1 +1,2 @@ # default config for tests, overrides clippy.toml at the project root +lint-commented-code = false diff --git a/tests/compile-test.rs b/tests/compile-test.rs index 956a05288f358..6d391bd622a8d 100644 --- a/tests/compile-test.rs +++ b/tests/compile-test.rs @@ -2,6 +2,8 @@ #![warn(rust_2018_idioms, unused_lifetimes)] #![allow(unused_extern_crates)] +use askama::Template; +use askama::filters::Safe; use cargo_metadata::Message; use cargo_metadata::diagnostic::{Applicability, Diagnostic}; use clippy_config::ClippyConfiguration; @@ -9,11 +11,10 @@ use clippy_lints::LintInfo; use clippy_lints::declared_lints::LINTS; use clippy_lints::deprecated_lints::{DEPRECATED, DEPRECATED_VERSION, RENAMED}; use pulldown_cmark::{Options, Parser, html}; -use rinja::Template; -use rinja::filters::Safe; use serde::Deserialize; use test_utils::IS_RUSTC_TEST_SUITE; use ui_test::custom_flags::Flag; +use ui_test::custom_flags::edition::Edition; use ui_test::custom_flags::rustfix::RustfixMode; use ui_test::spanned::Spanned; use ui_test::{Args, CommandBuilder, Config, Match, error_on_output_conflict, status_emitter}; @@ -86,13 +87,13 @@ fn extern_flags() -> Vec { let name = name.strip_prefix("lib").unwrap_or(name); Some((name, path_str)) }; - if let Some((name, path)) = parse_name_path() { - if TEST_DEPENDENCIES.contains(&name) { - // A dependency may be listed twice if it is available in sysroot, - // and the sysroot dependencies are listed first. As of the writing, - // this only seems to apply to if_chain. - crates.insert(name, path); - } + if let Some((name, path)) = parse_name_path() + && TEST_DEPENDENCIES.contains(&name) + { + // A dependency may be listed twice if it is available in sysroot, + // and the sysroot dependencies are listed first. As of the writing, + // this only seems to apply to if_chain. + crates.insert(name, path); } } let not_found: Vec<&str> = TEST_DEPENDENCIES @@ -147,11 +148,16 @@ impl TestContext { .map(|filters| filters.split(',').map(str::to_string).collect()) .unwrap_or_default(), target: None, - bless_command: Some("cargo uibless".into()), + bless_command: Some(if IS_RUSTC_TEST_SUITE { + "./x test src/tools/clippy --bless".into() + } else { + "cargo uibless".into() + }), out_dir: target_dir.join("ui_test"), ..Config::rustc(Path::new("tests").join(test_dir)) }; let defaults = config.comment_defaults.base(); + defaults.set_custom("edition", Edition("2024".into())); defaults.exit_status = None.into(); if mandatory_annotations { defaults.require_annotations = Some(Spanned::dummy(true)).into(); diff --git a/tests/dogfood.rs b/tests/dogfood.rs index 858be389a9e6e..16a1a415102c4 100644 --- a/tests/dogfood.rs +++ b/tests/dogfood.rs @@ -36,6 +36,7 @@ fn dogfood() { for package in [ "./", "clippy_dev", + "clippy_lints_internal", "clippy_lints", "clippy_utils", "clippy_config", @@ -80,11 +81,9 @@ fn run_clippy_for_package(project: &str, args: &[&str]) -> bool { command.arg("--").args(args); command.arg("-Cdebuginfo=0"); // disable debuginfo to generate less data in the target dir + command.args(["-D", "clippy::dbg_macro"]); - if cfg!(feature = "internal") { - // internal lints only exist if we build with the internal feature - command.args(["-D", "clippy::internal"]); - } else { + if !cfg!(feature = "internal") { // running a clippy built without internal lints on the clippy source // that contains e.g. `allow(clippy::invalid_paths)` command.args(["-A", "unknown_lints"]); diff --git a/tests/ui-internal/auxiliary/paths.rs b/tests/ui-internal/auxiliary/paths.rs index 52fcaec4df32e..f730f564a09cf 100644 --- a/tests/ui-internal/auxiliary/paths.rs +++ b/tests/ui-internal/auxiliary/paths.rs @@ -1,2 +1,4 @@ +#![allow(clippy::unnecessary_def_path)] + pub static OPTION: [&str; 3] = ["core", "option", "Option"]; pub const RESULT: &[&str] = &["core", "result", "Result"]; diff --git a/tests/ui-internal/check_clippy_version_attribute.rs b/tests/ui-internal/check_clippy_version_attribute.rs index e5f6001b74d09..897002949e67e 100644 --- a/tests/ui-internal/check_clippy_version_attribute.rs +++ b/tests/ui-internal/check_clippy_version_attribute.rs @@ -1,5 +1,5 @@ -#![deny(clippy::internal)] #![feature(rustc_private)] +#![deny(clippy::invalid_clippy_version_attribute, clippy::missing_clippy_version_attribute)] #[macro_use] extern crate rustc_middle; @@ -86,6 +86,15 @@ mod internal_clippy_lints { } use crate::internal_clippy_lints::ALLOW_MISSING_ATTRIBUTE_ONE; -declare_lint_pass!(Pass2 => [VALID_ONE, VALID_TWO, VALID_THREE, INVALID_ONE, INVALID_TWO, MISSING_ATTRIBUTE_ONE, MISSING_ATTRIBUTE_TWO, ALLOW_MISSING_ATTRIBUTE_ONE]); +declare_lint_pass!(Pass2 => [ + VALID_ONE, + VALID_TWO, + VALID_THREE, + INVALID_ONE, + INVALID_TWO, + MISSING_ATTRIBUTE_ONE, + MISSING_ATTRIBUTE_TWO, + ALLOW_MISSING_ATTRIBUTE_ONE, +]); fn main() {} diff --git a/tests/ui-internal/check_clippy_version_attribute.stderr b/tests/ui-internal/check_clippy_version_attribute.stderr index 1129c35d1d01b..952bc94403033 100644 --- a/tests/ui-internal/check_clippy_version_attribute.stderr +++ b/tests/ui-internal/check_clippy_version_attribute.stderr @@ -12,11 +12,10 @@ LL | | } | = help: please use a valid semantic version, see `doc/adding_lints.md` note: the lint level is defined here - --> tests/ui-internal/check_clippy_version_attribute.rs:1:9 + --> tests/ui-internal/check_clippy_version_attribute.rs:2:9 | -LL | #![deny(clippy::internal)] - | ^^^^^^^^^^^^^^^^ - = note: `#[deny(clippy::invalid_clippy_version_attribute)]` implied by `#[deny(clippy::internal)]` +LL | #![deny(clippy::invalid_clippy_version_attribute, clippy::missing_clippy_version_attribute)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ = note: this error originates in the macro `$crate::declare_tool_lint` which comes from the expansion of the macro `declare_tool_lint` (in Nightly builds, run with -Z macro-backtrace for more info) error: this item has an invalid `clippy::version` attribute @@ -47,7 +46,11 @@ LL | | } | |_^ | = help: please use a `clippy::version` attribute, see `doc/adding_lints.md` - = note: `#[deny(clippy::missing_clippy_version_attribute)]` implied by `#[deny(clippy::internal)]` +note: the lint level is defined here + --> tests/ui-internal/check_clippy_version_attribute.rs:2:51 + | +LL | #![deny(clippy::invalid_clippy_version_attribute, clippy::missing_clippy_version_attribute)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ = note: this error originates in the macro `$crate::declare_tool_lint` which comes from the expansion of the macro `declare_tool_lint` (in Nightly builds, run with -Z macro-backtrace for more info) error: this lint is missing the `clippy::version` attribute or version value diff --git a/tests/ui-internal/check_formulation.rs b/tests/ui-internal/check_formulation.rs index 8265a78769d16..bcbb0d783198e 100644 --- a/tests/ui-internal/check_formulation.rs +++ b/tests/ui-internal/check_formulation.rs @@ -1,4 +1,5 @@ -#![warn(clippy::almost_standard_lint_formulation)] +#![deny(clippy::almost_standard_lint_formulation)] +#![allow(clippy::lint_without_lint_pass)] #![feature(rustc_private)] #[macro_use] diff --git a/tests/ui-internal/check_formulation.stderr b/tests/ui-internal/check_formulation.stderr index b16e1bf868737..9aeb9e1f2d49c 100644 --- a/tests/ui-internal/check_formulation.stderr +++ b/tests/ui-internal/check_formulation.stderr @@ -1,15 +1,18 @@ error: non-standard lint formulation - --> tests/ui-internal/check_formulation.rs:23:5 + --> tests/ui-internal/check_formulation.rs:24:5 | LL | /// Check for lint formulations that are correct | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: consider using `Checks for` - = note: `-D clippy::almost-standard-lint-formulation` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::almost_standard_lint_formulation)]` +note: the lint level is defined here + --> tests/ui-internal/check_formulation.rs:1:9 + | +LL | #![deny(clippy::almost_standard_lint_formulation)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: non-standard lint formulation - --> tests/ui-internal/check_formulation.rs:34:5 + --> tests/ui-internal/check_formulation.rs:35:5 | LL | /// Detects uses of incorrect formulations | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui-internal/collapsible_span_lint_calls.fixed b/tests/ui-internal/collapsible_span_lint_calls.fixed index 918e33345a779..76f68686ee2a8 100644 --- a/tests/ui-internal/collapsible_span_lint_calls.fixed +++ b/tests/ui-internal/collapsible_span_lint_calls.fixed @@ -1,4 +1,4 @@ -#![deny(clippy::internal)] +#![deny(clippy::collapsible_span_lint_calls)] #![allow(clippy::missing_clippy_version_attribute)] #![feature(rustc_private)] diff --git a/tests/ui-internal/collapsible_span_lint_calls.rs b/tests/ui-internal/collapsible_span_lint_calls.rs index 2f289ae2b4819..214c8783a6690 100644 --- a/tests/ui-internal/collapsible_span_lint_calls.rs +++ b/tests/ui-internal/collapsible_span_lint_calls.rs @@ -1,4 +1,4 @@ -#![deny(clippy::internal)] +#![deny(clippy::collapsible_span_lint_calls)] #![allow(clippy::missing_clippy_version_attribute)] #![feature(rustc_private)] diff --git a/tests/ui-internal/collapsible_span_lint_calls.stderr b/tests/ui-internal/collapsible_span_lint_calls.stderr index a2be1f1cd367d..9c83538947cab 100644 --- a/tests/ui-internal/collapsible_span_lint_calls.stderr +++ b/tests/ui-internal/collapsible_span_lint_calls.stderr @@ -10,9 +10,8 @@ LL | | }); note: the lint level is defined here --> tests/ui-internal/collapsible_span_lint_calls.rs:1:9 | -LL | #![deny(clippy::internal)] - | ^^^^^^^^^^^^^^^^ - = note: `#[deny(clippy::collapsible_span_lint_calls)]` implied by `#[deny(clippy::internal)]` +LL | #![deny(clippy::collapsible_span_lint_calls)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: this call is collapsible --> tests/ui-internal/collapsible_span_lint_calls.rs:39:9 diff --git a/tests/ui-internal/custom_ice_message.rs b/tests/ui-internal/custom_ice_message.rs index 71819fe370701..c7e92b1bf164f 100644 --- a/tests/ui-internal/custom_ice_message.rs +++ b/tests/ui-internal/custom_ice_message.rs @@ -6,7 +6,7 @@ //@normalize-stderr-test: "rustc 1\.\d+.* running on .*" -> "rustc running on " //@normalize-stderr-test: "(?ms)query stack during panic:\n.*end of query stack\n" -> "" -#![deny(clippy::internal)] +#![deny(clippy::produce_ice)] #![allow(clippy::missing_clippy_version_attribute)] fn it_looks_like_you_are_trying_to_kill_clippy() {} diff --git a/tests/ui-internal/custom_ice_message.stderr b/tests/ui-internal/custom_ice_message.stderr index 589e1190a907e..884d3d035a29d 100644 --- a/tests/ui-internal/custom_ice_message.stderr +++ b/tests/ui-internal/custom_ice_message.stderr @@ -8,7 +8,7 @@ error: internal compiler error: Would you like some help with that? LL | fn it_looks_like_you_are_trying_to_kill_clippy() {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | -note: delayed at clippy_lints/src/utils/internal_lints/produce_ice.rs - disabled backtrace +note: delayed at clippy_lints_internal/src/produce_ice.rs - disabled backtrace --> tests/ui-internal/custom_ice_message.rs:12:1 | LL | fn it_looks_like_you_are_trying_to_kill_clippy() {} diff --git a/tests/ui-internal/default_lint.rs b/tests/ui-internal/default_lint.rs index 959bfd27e3899..809f2c4d080dc 100644 --- a/tests/ui-internal/default_lint.rs +++ b/tests/ui-internal/default_lint.rs @@ -1,4 +1,4 @@ -#![deny(clippy::internal)] +#![deny(clippy::default_lint)] #![allow(clippy::missing_clippy_version_attribute)] #![feature(rustc_private)] diff --git a/tests/ui-internal/default_lint.stderr b/tests/ui-internal/default_lint.stderr index 9d4c2e15349f6..2c700ec82dcd4 100644 --- a/tests/ui-internal/default_lint.stderr +++ b/tests/ui-internal/default_lint.stderr @@ -13,9 +13,8 @@ LL | | } note: the lint level is defined here --> tests/ui-internal/default_lint.rs:1:9 | -LL | #![deny(clippy::internal)] - | ^^^^^^^^^^^^^^^^ - = note: `#[deny(clippy::default_lint)]` implied by `#[deny(clippy::internal)]` +LL | #![deny(clippy::default_lint)] + | ^^^^^^^^^^^^^^^^^^^^ = note: this error originates in the macro `$crate::declare_tool_lint` which comes from the expansion of the macro `declare_tool_lint` (in Nightly builds, run with -Z macro-backtrace for more info) error: aborting due to 1 previous error diff --git a/tests/ui-internal/disallow_span_lint.rs b/tests/ui-internal/disallow_span_lint.rs index 3fed38cab64d4..36e4158f6e688 100644 --- a/tests/ui-internal/disallow_span_lint.rs +++ b/tests/ui-internal/disallow_span_lint.rs @@ -1,4 +1,5 @@ #![feature(rustc_private)] +#![deny(clippy::disallowed_methods)] extern crate rustc_errors; extern crate rustc_hir; diff --git a/tests/ui-internal/disallow_span_lint.stderr b/tests/ui-internal/disallow_span_lint.stderr index 9a7a7ecbbff92..f03a745963e00 100644 --- a/tests/ui-internal/disallow_span_lint.stderr +++ b/tests/ui-internal/disallow_span_lint.stderr @@ -1,15 +1,18 @@ error: use of a disallowed method `rustc_lint::context::LintContext::span_lint` - --> tests/ui-internal/disallow_span_lint.rs:14:8 + --> tests/ui-internal/disallow_span_lint.rs:15:8 | LL | cx.span_lint(lint, span, |lint| { | ^^^^^^^^^ | = note: this function does not add a link to our documentation, please use the `clippy_utils::diagnostics::span_lint*` functions instead - = note: `-D clippy::disallowed-methods` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::disallowed_methods)]` +note: the lint level is defined here + --> tests/ui-internal/disallow_span_lint.rs:2:9 + | +LL | #![deny(clippy::disallowed_methods)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ error: use of a disallowed method `rustc_middle::ty::context::TyCtxt::node_span_lint` - --> tests/ui-internal/disallow_span_lint.rs:21:9 + --> tests/ui-internal/disallow_span_lint.rs:22:9 | LL | tcx.node_span_lint(lint, hir_id, span, |lint| { | ^^^^^^^^^^^^^^ diff --git a/tests/ui-internal/interning_defined_symbol.fixed b/tests/ui-internal/interning_defined_symbol.fixed deleted file mode 100644 index 92d3b1537e0c8..0000000000000 --- a/tests/ui-internal/interning_defined_symbol.fixed +++ /dev/null @@ -1,40 +0,0 @@ -#![deny(clippy::internal)] -#![allow(clippy::missing_clippy_version_attribute, clippy::let_unit_value)] -#![feature(rustc_private)] - -extern crate rustc_span; - -use rustc_span::symbol::Symbol; - -macro_rules! sym { - ($tt:tt) => { - rustc_span::symbol::Symbol::intern(stringify!($tt)) - }; -} - -fn main() { - // Direct use of Symbol::intern - let _ = rustc_span::sym::f32; - //~^ interning_defined_symbol - - // Using a sym macro - let _ = rustc_span::sym::f32; - //~^ interning_defined_symbol - - // Correct suggestion when symbol isn't stringified constant name - let _ = rustc_span::sym::proc_dash_macro; - //~^ interning_defined_symbol - - // interning a keyword - let _ = rustc_span::kw::SelfLower; - //~^ interning_defined_symbol - - // Interning a symbol that is not defined - let _ = Symbol::intern("xyz123"); - let _ = sym!(xyz123); - - // Using a different `intern` function - let _ = intern("f32"); -} - -fn intern(_: &str) {} diff --git a/tests/ui-internal/interning_defined_symbol.rs b/tests/ui-internal/interning_defined_symbol.rs deleted file mode 100644 index d1e6f9cb1c416..0000000000000 --- a/tests/ui-internal/interning_defined_symbol.rs +++ /dev/null @@ -1,40 +0,0 @@ -#![deny(clippy::internal)] -#![allow(clippy::missing_clippy_version_attribute, clippy::let_unit_value)] -#![feature(rustc_private)] - -extern crate rustc_span; - -use rustc_span::symbol::Symbol; - -macro_rules! sym { - ($tt:tt) => { - rustc_span::symbol::Symbol::intern(stringify!($tt)) - }; -} - -fn main() { - // Direct use of Symbol::intern - let _ = Symbol::intern("f32"); - //~^ interning_defined_symbol - - // Using a sym macro - let _ = sym!(f32); - //~^ interning_defined_symbol - - // Correct suggestion when symbol isn't stringified constant name - let _ = Symbol::intern("proc-macro"); - //~^ interning_defined_symbol - - // interning a keyword - let _ = Symbol::intern("self"); - //~^ interning_defined_symbol - - // Interning a symbol that is not defined - let _ = Symbol::intern("xyz123"); - let _ = sym!(xyz123); - - // Using a different `intern` function - let _ = intern("f32"); -} - -fn intern(_: &str) {} diff --git a/tests/ui-internal/interning_defined_symbol.stderr b/tests/ui-internal/interning_defined_symbol.stderr deleted file mode 100644 index c84a566436a8e..0000000000000 --- a/tests/ui-internal/interning_defined_symbol.stderr +++ /dev/null @@ -1,33 +0,0 @@ -error: interning a defined symbol - --> tests/ui-internal/interning_defined_symbol.rs:17:13 - | -LL | let _ = Symbol::intern("f32"); - | ^^^^^^^^^^^^^^^^^^^^^ help: try: `rustc_span::sym::f32` - | -note: the lint level is defined here - --> tests/ui-internal/interning_defined_symbol.rs:1:9 - | -LL | #![deny(clippy::internal)] - | ^^^^^^^^^^^^^^^^ - = note: `#[deny(clippy::interning_defined_symbol)]` implied by `#[deny(clippy::internal)]` - -error: interning a defined symbol - --> tests/ui-internal/interning_defined_symbol.rs:21:13 - | -LL | let _ = sym!(f32); - | ^^^^^^^^^ help: try: `rustc_span::sym::f32` - -error: interning a defined symbol - --> tests/ui-internal/interning_defined_symbol.rs:25:13 - | -LL | let _ = Symbol::intern("proc-macro"); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `rustc_span::sym::proc_dash_macro` - -error: interning a defined symbol - --> tests/ui-internal/interning_defined_symbol.rs:29:13 - | -LL | let _ = Symbol::intern("self"); - | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `rustc_span::kw::SelfLower` - -error: aborting due to 4 previous errors - diff --git a/tests/ui-internal/interning_literals.fixed b/tests/ui-internal/interning_literals.fixed new file mode 100644 index 0000000000000..03e97768b996f --- /dev/null +++ b/tests/ui-internal/interning_literals.fixed @@ -0,0 +1,31 @@ +#![allow(clippy::let_unit_value)] +#![feature(rustc_private)] + +extern crate rustc_span; + +use clippy_utils::sym; +use rustc_span::{Symbol, kw}; + +fn main() { + let _ = sym::f32; + //~^ interning_literals + + // Correct suggestion when symbol isn't stringified constant name + let _ = sym::proc_dash_macro; + //~^ interning_literals + + // Interning a keyword + let _ = kw::SelfLower; + //~^ interning_literals + + // Defined in clippy_utils + let _ = sym::msrv; + //~^ interning_literals + let _ = sym::Cargo_toml; + //~^ interning_literals + + // Using a different `intern` function + let _ = intern("f32"); +} + +fn intern(_: &str) {} diff --git a/tests/ui-internal/interning_literals.rs b/tests/ui-internal/interning_literals.rs new file mode 100644 index 0000000000000..561fd5702a59f --- /dev/null +++ b/tests/ui-internal/interning_literals.rs @@ -0,0 +1,31 @@ +#![allow(clippy::let_unit_value)] +#![feature(rustc_private)] + +extern crate rustc_span; + +use clippy_utils::sym; +use rustc_span::{Symbol, kw}; + +fn main() { + let _ = Symbol::intern("f32"); + //~^ interning_literals + + // Correct suggestion when symbol isn't stringified constant name + let _ = Symbol::intern("proc-macro"); + //~^ interning_literals + + // Interning a keyword + let _ = Symbol::intern("self"); + //~^ interning_literals + + // Defined in clippy_utils + let _ = Symbol::intern("msrv"); + //~^ interning_literals + let _ = Symbol::intern("Cargo.toml"); + //~^ interning_literals + + // Using a different `intern` function + let _ = intern("f32"); +} + +fn intern(_: &str) {} diff --git a/tests/ui-internal/interning_literals.stderr b/tests/ui-internal/interning_literals.stderr new file mode 100644 index 0000000000000..628b97eff84da --- /dev/null +++ b/tests/ui-internal/interning_literals.stderr @@ -0,0 +1,64 @@ +error: interning a string literal + --> tests/ui-internal/interning_literals.rs:10:13 + | +LL | let _ = Symbol::intern("f32"); + | ^^^^^^^^^^^^^^^^^^^^^ + | + = note: `-D clippy::interning-literals` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::interning_literals)]` +help: use the preinterned symbol + | +LL - let _ = Symbol::intern("f32"); +LL + let _ = sym::f32; + | + +error: interning a string literal + --> tests/ui-internal/interning_literals.rs:14:13 + | +LL | let _ = Symbol::intern("proc-macro"); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use the preinterned symbol + | +LL - let _ = Symbol::intern("proc-macro"); +LL + let _ = sym::proc_dash_macro; + | + +error: interning a string literal + --> tests/ui-internal/interning_literals.rs:18:13 + | +LL | let _ = Symbol::intern("self"); + | ^^^^^^^^^^^^^^^^^^^^^^ + | +help: use the preinterned symbol + | +LL - let _ = Symbol::intern("self"); +LL + let _ = kw::SelfLower; + | + +error: interning a string literal + --> tests/ui-internal/interning_literals.rs:22:13 + | +LL | let _ = Symbol::intern("msrv"); + | ^^^^^^^^^^^^^^^^^^^^^^ + | +help: use the preinterned symbol + | +LL - let _ = Symbol::intern("msrv"); +LL + let _ = sym::msrv; + | + +error: interning a string literal + --> tests/ui-internal/interning_literals.rs:24:13 + | +LL | let _ = Symbol::intern("Cargo.toml"); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: use the preinterned symbol + | +LL - let _ = Symbol::intern("Cargo.toml"); +LL + let _ = sym::Cargo_toml; + | + +error: aborting due to 5 previous errors + diff --git a/tests/ui-internal/interning_literals_unfixable.rs b/tests/ui-internal/interning_literals_unfixable.rs new file mode 100644 index 0000000000000..43872e95a5854 --- /dev/null +++ b/tests/ui-internal/interning_literals_unfixable.rs @@ -0,0 +1,16 @@ +//@no-rustfix: paths that don't exist yet +#![feature(rustc_private)] + +extern crate rustc_span; + +use rustc_span::Symbol; + +fn main() { + // Not yet defined + let _ = Symbol::intern("xyz123"); + //~^ interning_literals + let _ = Symbol::intern("with-dash"); + //~^ interning_literals + let _ = Symbol::intern("with.dot"); + //~^ interning_literals +} diff --git a/tests/ui-internal/interning_literals_unfixable.stderr b/tests/ui-internal/interning_literals_unfixable.stderr new file mode 100644 index 0000000000000..8294453a8f945 --- /dev/null +++ b/tests/ui-internal/interning_literals_unfixable.stderr @@ -0,0 +1,40 @@ +error: interning a string literal + --> tests/ui-internal/interning_literals_unfixable.rs:10:13 + | +LL | let _ = Symbol::intern("xyz123"); + | ^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: `-D clippy::interning-literals` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::interning_literals)]` +help: add the symbol to `clippy_utils/src/sym.rs` and use it + | +LL - let _ = Symbol::intern("xyz123"); +LL + let _ = sym::xyz123; + | + +error: interning a string literal + --> tests/ui-internal/interning_literals_unfixable.rs:12:13 + | +LL | let _ = Symbol::intern("with-dash"); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: add the symbol to `clippy_utils/src/sym.rs` and use it + | +LL - let _ = Symbol::intern("with-dash"); +LL + let _ = sym::with_dash; + | + +error: interning a string literal + --> tests/ui-internal/interning_literals_unfixable.rs:14:13 + | +LL | let _ = Symbol::intern("with.dot"); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: add the symbol to `clippy_utils/src/sym.rs` and use it + | +LL - let _ = Symbol::intern("with.dot"); +LL + let _ = sym::with_dot; + | + +error: aborting due to 3 previous errors + diff --git a/tests/ui-internal/invalid_msrv_attr_impl.fixed b/tests/ui-internal/invalid_msrv_attr_impl.fixed index 6804e2bbae83c..238ef9ae6d0ac 100644 --- a/tests/ui-internal/invalid_msrv_attr_impl.fixed +++ b/tests/ui-internal/invalid_msrv_attr_impl.fixed @@ -1,4 +1,4 @@ -#![deny(clippy::internal)] +#![deny(clippy::missing_msrv_attr_impl)] #![allow(clippy::missing_clippy_version_attribute)] #![feature(rustc_private)] diff --git a/tests/ui-internal/invalid_msrv_attr_impl.rs b/tests/ui-internal/invalid_msrv_attr_impl.rs index c625a5d9a4590..7753dcaad7139 100644 --- a/tests/ui-internal/invalid_msrv_attr_impl.rs +++ b/tests/ui-internal/invalid_msrv_attr_impl.rs @@ -1,4 +1,4 @@ -#![deny(clippy::internal)] +#![deny(clippy::missing_msrv_attr_impl)] #![allow(clippy::missing_clippy_version_attribute)] #![feature(rustc_private)] diff --git a/tests/ui-internal/invalid_msrv_attr_impl.stderr b/tests/ui-internal/invalid_msrv_attr_impl.stderr index 0a7636313eff2..d5928d8c0c2de 100644 --- a/tests/ui-internal/invalid_msrv_attr_impl.stderr +++ b/tests/ui-internal/invalid_msrv_attr_impl.stderr @@ -7,9 +7,8 @@ LL | impl EarlyLintPass for Pass { note: the lint level is defined here --> tests/ui-internal/invalid_msrv_attr_impl.rs:1:9 | -LL | #![deny(clippy::internal)] - | ^^^^^^^^^^^^^^^^ - = note: `#[deny(clippy::missing_msrv_attr_impl)]` implied by `#[deny(clippy::internal)]` +LL | #![deny(clippy::missing_msrv_attr_impl)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: add `extract_msrv_attr!()` to the `EarlyLintPass` implementation | LL ~ impl EarlyLintPass for Pass { diff --git a/tests/ui-internal/invalid_paths.rs b/tests/ui-internal/invalid_paths.rs index abfb111f938e4..7317abc2185a3 100644 --- a/tests/ui-internal/invalid_paths.rs +++ b/tests/ui-internal/invalid_paths.rs @@ -1,4 +1,4 @@ -#![warn(clippy::internal)] +#![deny(clippy::invalid_paths)] #![allow(clippy::missing_clippy_version_attribute, clippy::unnecessary_def_path)] mod paths { diff --git a/tests/ui-internal/invalid_paths.stderr b/tests/ui-internal/invalid_paths.stderr index 7bde37667be42..7b7b25ce8d8db 100644 --- a/tests/ui-internal/invalid_paths.stderr +++ b/tests/ui-internal/invalid_paths.stderr @@ -4,8 +4,11 @@ error: invalid path LL | pub const TRANSMUTE: [&str; 4] = ["core", "intrinsics", "", "transmute"]; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | - = note: `-D clippy::invalid-paths` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::invalid_paths)]` +note: the lint level is defined here + --> tests/ui-internal/invalid_paths.rs:1:9 + | +LL | #![deny(clippy::invalid_paths)] + | ^^^^^^^^^^^^^^^^^^^^^ error: invalid path --> tests/ui-internal/invalid_paths.rs:19:5 diff --git a/tests/ui-internal/lint_without_lint_pass.rs b/tests/ui-internal/lint_without_lint_pass.rs index 69591523432c8..6b649132aca31 100644 --- a/tests/ui-internal/lint_without_lint_pass.rs +++ b/tests/ui-internal/lint_without_lint_pass.rs @@ -1,4 +1,4 @@ -#![deny(clippy::internal)] +#![deny(clippy::lint_without_lint_pass)] #![allow(clippy::missing_clippy_version_attribute)] #![feature(rustc_private)] diff --git a/tests/ui-internal/lint_without_lint_pass.stderr b/tests/ui-internal/lint_without_lint_pass.stderr index 9cca96ca16020..3798293f4c111 100644 --- a/tests/ui-internal/lint_without_lint_pass.stderr +++ b/tests/ui-internal/lint_without_lint_pass.stderr @@ -13,9 +13,8 @@ LL | | } note: the lint level is defined here --> tests/ui-internal/lint_without_lint_pass.rs:1:9 | -LL | #![deny(clippy::internal)] - | ^^^^^^^^^^^^^^^^ - = note: `#[deny(clippy::lint_without_lint_pass)]` implied by `#[deny(clippy::internal)]` +LL | #![deny(clippy::lint_without_lint_pass)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ = note: this error originates in the macro `declare_tool_lint` (in Nightly builds, run with -Z macro-backtrace for more info) error: aborting due to 1 previous error diff --git a/tests/ui-internal/outer_expn_data.fixed b/tests/ui-internal/outer_expn_data.fixed index cb7680b8bb142..900ca5b2ab9d8 100644 --- a/tests/ui-internal/outer_expn_data.fixed +++ b/tests/ui-internal/outer_expn_data.fixed @@ -1,4 +1,4 @@ -#![deny(clippy::internal)] +#![deny(clippy::outer_expn_expn_data)] #![allow(clippy::missing_clippy_version_attribute)] #![feature(rustc_private)] diff --git a/tests/ui-internal/outer_expn_data.rs b/tests/ui-internal/outer_expn_data.rs index 41d735110b5a0..bcfc42aa2ac75 100644 --- a/tests/ui-internal/outer_expn_data.rs +++ b/tests/ui-internal/outer_expn_data.rs @@ -1,4 +1,4 @@ -#![deny(clippy::internal)] +#![deny(clippy::outer_expn_expn_data)] #![allow(clippy::missing_clippy_version_attribute)] #![feature(rustc_private)] diff --git a/tests/ui-internal/outer_expn_data.stderr b/tests/ui-internal/outer_expn_data.stderr index 33ac91e4fb0de..b86138a5d45d2 100644 --- a/tests/ui-internal/outer_expn_data.stderr +++ b/tests/ui-internal/outer_expn_data.stderr @@ -7,9 +7,8 @@ LL | let _ = expr.span.ctxt().outer_expn().expn_data(); note: the lint level is defined here --> tests/ui-internal/outer_expn_data.rs:1:9 | -LL | #![deny(clippy::internal)] - | ^^^^^^^^^^^^^^^^ - = note: `#[deny(clippy::outer_expn_expn_data)]` implied by `#[deny(clippy::internal)]` +LL | #![deny(clippy::outer_expn_expn_data)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: aborting due to 1 previous error diff --git a/tests/ui-internal/slow_symbol_comparisons.fixed b/tests/ui-internal/slow_symbol_comparisons.fixed deleted file mode 100644 index 2cbd646a0fd5d..0000000000000 --- a/tests/ui-internal/slow_symbol_comparisons.fixed +++ /dev/null @@ -1,24 +0,0 @@ -#![feature(rustc_private)] -#![warn(clippy::slow_symbol_comparisons)] - -extern crate rustc_span; - -use clippy_utils::sym; -use rustc_span::Symbol; - -fn main() { - let symbol = sym!(example); - let other_symbol = sym!(other_example); - - // Should lint - let slow_comparison = symbol.as_str() == "example"; - //~^ error: comparing `Symbol` via `Symbol::intern` - let slow_comparison_macro = symbol.as_str() == "example"; - //~^ error: comparing `Symbol` via `Symbol::intern` - let slow_comparison_backwards = symbol.as_str() == "example"; - //~^ error: comparing `Symbol` via `Symbol::intern` - - // Should not lint - let faster_comparison = symbol.as_str() == "other_example"; - let preinterned_comparison = symbol == other_symbol; -} diff --git a/tests/ui-internal/slow_symbol_comparisons.rs b/tests/ui-internal/slow_symbol_comparisons.rs deleted file mode 100644 index 0cea3c3fcff9f..0000000000000 --- a/tests/ui-internal/slow_symbol_comparisons.rs +++ /dev/null @@ -1,24 +0,0 @@ -#![feature(rustc_private)] -#![warn(clippy::slow_symbol_comparisons)] - -extern crate rustc_span; - -use clippy_utils::sym; -use rustc_span::Symbol; - -fn main() { - let symbol = sym!(example); - let other_symbol = sym!(other_example); - - // Should lint - let slow_comparison = symbol == Symbol::intern("example"); - //~^ error: comparing `Symbol` via `Symbol::intern` - let slow_comparison_macro = symbol == sym!(example); - //~^ error: comparing `Symbol` via `Symbol::intern` - let slow_comparison_backwards = sym!(example) == symbol; - //~^ error: comparing `Symbol` via `Symbol::intern` - - // Should not lint - let faster_comparison = symbol.as_str() == "other_example"; - let preinterned_comparison = symbol == other_symbol; -} diff --git a/tests/ui-internal/slow_symbol_comparisons.stderr b/tests/ui-internal/slow_symbol_comparisons.stderr deleted file mode 100644 index 72cb20a7fed90..0000000000000 --- a/tests/ui-internal/slow_symbol_comparisons.stderr +++ /dev/null @@ -1,23 +0,0 @@ -error: comparing `Symbol` via `Symbol::intern` - --> tests/ui-internal/slow_symbol_comparisons.rs:14:27 - | -LL | let slow_comparison = symbol == Symbol::intern("example"); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `Symbol::as_str` and check the string instead: `symbol.as_str() == "example"` - | - = note: `-D clippy::slow-symbol-comparisons` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::slow_symbol_comparisons)]` - -error: comparing `Symbol` via `Symbol::intern` - --> tests/ui-internal/slow_symbol_comparisons.rs:16:33 - | -LL | let slow_comparison_macro = symbol == sym!(example); - | ^^^^^^^^^^^^^^^^^^^^^^^ help: use `Symbol::as_str` and check the string instead: `symbol.as_str() == "example"` - -error: comparing `Symbol` via `Symbol::intern` - --> tests/ui-internal/slow_symbol_comparisons.rs:18:37 - | -LL | let slow_comparison_backwards = sym!(example) == symbol; - | ^^^^^^^^^^^^^^^^^^^^^^^ help: use `Symbol::as_str` and check the string instead: `symbol.as_str() == "example"` - -error: aborting due to 3 previous errors - diff --git a/tests/ui-internal/unnecessary_def_path.fixed b/tests/ui-internal/unnecessary_def_path.fixed index 577fad9341b64..89902ebe4e54e 100644 --- a/tests/ui-internal/unnecessary_def_path.fixed +++ b/tests/ui-internal/unnecessary_def_path.fixed @@ -1,5 +1,5 @@ //@aux-build:paths.rs -#![deny(clippy::internal)] +#![deny(clippy::unnecessary_def_path)] #![feature(rustc_private)] #![allow(clippy::unnecessary_map_or)] diff --git a/tests/ui-internal/unnecessary_def_path.rs b/tests/ui-internal/unnecessary_def_path.rs index d4deb3626d0b6..cfca15267c195 100644 --- a/tests/ui-internal/unnecessary_def_path.rs +++ b/tests/ui-internal/unnecessary_def_path.rs @@ -1,5 +1,5 @@ //@aux-build:paths.rs -#![deny(clippy::internal)] +#![deny(clippy::unnecessary_def_path)] #![feature(rustc_private)] #![allow(clippy::unnecessary_map_or)] diff --git a/tests/ui-internal/unnecessary_def_path.stderr b/tests/ui-internal/unnecessary_def_path.stderr index 0053ba321bbe7..d7fb4ea551e1d 100644 --- a/tests/ui-internal/unnecessary_def_path.stderr +++ b/tests/ui-internal/unnecessary_def_path.stderr @@ -7,9 +7,8 @@ LL | let _ = match_type(cx, ty, &OPTION); note: the lint level is defined here --> tests/ui-internal/unnecessary_def_path.rs:2:9 | -LL | #![deny(clippy::internal)] - | ^^^^^^^^^^^^^^^^ - = note: `#[deny(clippy::unnecessary_def_path)]` implied by `#[deny(clippy::internal)]` +LL | #![deny(clippy::unnecessary_def_path)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: use of a def path to a diagnostic item --> tests/ui-internal/unnecessary_def_path.rs:39:13 diff --git a/tests/ui-internal/unnecessary_def_path_hardcoded_path.rs b/tests/ui-internal/unnecessary_def_path_hardcoded_path.rs index 4801d76bd2685..bd7a55114acbc 100644 --- a/tests/ui-internal/unnecessary_def_path_hardcoded_path.rs +++ b/tests/ui-internal/unnecessary_def_path_hardcoded_path.rs @@ -1,6 +1,6 @@ #![feature(rustc_private)] #![allow(unused)] -#![warn(clippy::unnecessary_def_path)] +#![deny(clippy::unnecessary_def_path)] extern crate rustc_hir; diff --git a/tests/ui-internal/unnecessary_def_path_hardcoded_path.stderr b/tests/ui-internal/unnecessary_def_path_hardcoded_path.stderr index b938395193234..88fdf6f1c1888 100644 --- a/tests/ui-internal/unnecessary_def_path_hardcoded_path.stderr +++ b/tests/ui-internal/unnecessary_def_path_hardcoded_path.stderr @@ -5,8 +5,11 @@ LL | const DEREF_TRAIT: [&str; 4] = ["core", "ops", "deref", "Deref"]; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: convert all references to use `sym::Deref` - = note: `-D clippy::unnecessary-def-path` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::unnecessary_def_path)]` +note: the lint level is defined here + --> tests/ui-internal/unnecessary_def_path_hardcoded_path.rs:3:9 + | +LL | #![deny(clippy::unnecessary_def_path)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: hardcoded path to a language item --> tests/ui-internal/unnecessary_def_path_hardcoded_path.rs:12:40 diff --git a/tests/ui-internal/unnecessary_symbol_str.fixed b/tests/ui-internal/unnecessary_symbol_str.fixed deleted file mode 100644 index dc564daef8293..0000000000000 --- a/tests/ui-internal/unnecessary_symbol_str.fixed +++ /dev/null @@ -1,26 +0,0 @@ -#![feature(rustc_private)] -#![deny(clippy::internal)] -#![allow( - clippy::slow_symbol_comparisons, - clippy::borrow_deref_ref, - clippy::unnecessary_operation, - unused_must_use, - clippy::missing_clippy_version_attribute -)] - -extern crate rustc_span; - -use rustc_span::symbol::{Ident, Symbol}; - -fn main() { - Symbol::intern("foo") == rustc_span::sym::clippy; - //~^ unnecessary_symbol_str - Symbol::intern("foo") == rustc_span::kw::SelfLower; - //~^ unnecessary_symbol_str - Symbol::intern("foo") != rustc_span::kw::SelfUpper; - //~^ unnecessary_symbol_str - Ident::empty().name == rustc_span::sym::clippy; - //~^ unnecessary_symbol_str - rustc_span::sym::clippy == Ident::empty().name; - //~^ unnecessary_symbol_str -} diff --git a/tests/ui-internal/unnecessary_symbol_str.rs b/tests/ui-internal/unnecessary_symbol_str.rs deleted file mode 100644 index d74262d1294b7..0000000000000 --- a/tests/ui-internal/unnecessary_symbol_str.rs +++ /dev/null @@ -1,26 +0,0 @@ -#![feature(rustc_private)] -#![deny(clippy::internal)] -#![allow( - clippy::slow_symbol_comparisons, - clippy::borrow_deref_ref, - clippy::unnecessary_operation, - unused_must_use, - clippy::missing_clippy_version_attribute -)] - -extern crate rustc_span; - -use rustc_span::symbol::{Ident, Symbol}; - -fn main() { - Symbol::intern("foo").as_str() == "clippy"; - //~^ unnecessary_symbol_str - Symbol::intern("foo").to_string() == "self"; - //~^ unnecessary_symbol_str - Symbol::intern("foo").to_ident_string() != "Self"; - //~^ unnecessary_symbol_str - &*Ident::empty().as_str() == "clippy"; - //~^ unnecessary_symbol_str - "clippy" == Ident::empty().to_string(); - //~^ unnecessary_symbol_str -} diff --git a/tests/ui-internal/unnecessary_symbol_str.stderr b/tests/ui-internal/unnecessary_symbol_str.stderr deleted file mode 100644 index 517a395e93f2c..0000000000000 --- a/tests/ui-internal/unnecessary_symbol_str.stderr +++ /dev/null @@ -1,39 +0,0 @@ -error: unnecessary `Symbol` to string conversion - --> tests/ui-internal/unnecessary_symbol_str.rs:16:5 - | -LL | Symbol::intern("foo").as_str() == "clippy"; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Symbol::intern("foo") == rustc_span::sym::clippy` - | -note: the lint level is defined here - --> tests/ui-internal/unnecessary_symbol_str.rs:2:9 - | -LL | #![deny(clippy::internal)] - | ^^^^^^^^^^^^^^^^ - = note: `#[deny(clippy::unnecessary_symbol_str)]` implied by `#[deny(clippy::internal)]` - -error: unnecessary `Symbol` to string conversion - --> tests/ui-internal/unnecessary_symbol_str.rs:18:5 - | -LL | Symbol::intern("foo").to_string() == "self"; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Symbol::intern("foo") == rustc_span::kw::SelfLower` - -error: unnecessary `Symbol` to string conversion - --> tests/ui-internal/unnecessary_symbol_str.rs:20:5 - | -LL | Symbol::intern("foo").to_ident_string() != "Self"; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Symbol::intern("foo") != rustc_span::kw::SelfUpper` - -error: unnecessary `Symbol` to string conversion - --> tests/ui-internal/unnecessary_symbol_str.rs:22:5 - | -LL | &*Ident::empty().as_str() == "clippy"; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Ident::empty().name == rustc_span::sym::clippy` - -error: unnecessary `Symbol` to string conversion - --> tests/ui-internal/unnecessary_symbol_str.rs:24:5 - | -LL | "clippy" == Ident::empty().to_string(); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `rustc_span::sym::clippy == Ident::empty().name` - -error: aborting due to 5 previous errors - diff --git a/tests/ui-toml/arbitrary_source_item_ordering/ordering_good.rs b/tests/ui-toml/arbitrary_source_item_ordering/ordering_good.rs index b43791521cb5a..694ef45c75b08 100644 --- a/tests/ui-toml/arbitrary_source_item_ordering/ordering_good.rs +++ b/tests/ui-toml/arbitrary_source_item_ordering/ordering_good.rs @@ -16,6 +16,7 @@ //@[bad_conf_4] error-in-other-file: //@[bad_conf_5] error-in-other-file: //@[bad_conf_6] error-in-other-file: +//@compile-flags: --test #![allow(dead_code)] #![warn(clippy::arbitrary_source_item_ordering)] diff --git a/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.default.stderr b/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.default.stderr index 7fc216b30d508..fcd7864c6677d 100644 --- a/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.default.stderr +++ b/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.default.stderr @@ -1,16 +1,16 @@ error: incorrect ordering of items (must be alphabetically ordered) - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:35:5 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:36:5 | LL | a: bool, | ^ | note: should be placed before `b` - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:34:5 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:35:5 | LL | b: bool, | ^ note: the lint level is defined here - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:32:8 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:33:8 | LL | #[deny(clippy::arbitrary_source_item_ordering)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.ord_in_2.stderr b/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.ord_in_2.stderr index 1f75f5099ecc1..81c35ff778b7f 100644 --- a/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.ord_in_2.stderr +++ b/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.ord_in_2.stderr @@ -1,33 +1,33 @@ error: incorrect ordering of items (must be alphabetically ordered) - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:24:8 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:25:8 | LL | struct OrderedChecked { | ^^^^^^^^^^^^^^ | note: should be placed before `Unordered` - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:18:8 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:19:8 | LL | struct Unordered { | ^^^^^^^^^ note: the lint level is defined here - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:9:9 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:10:9 | LL | #![deny(clippy::arbitrary_source_item_ordering)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: incorrect ordering of items (must be alphabetically ordered) - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:35:5 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:36:5 | LL | a: bool, | ^ | note: should be placed before `b` - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:34:5 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:35:5 | LL | b: bool, | ^ note: the lint level is defined here - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:32:8 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:33:8 | LL | #[deny(clippy::arbitrary_source_item_ordering)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.ord_in_3.stderr b/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.ord_in_3.stderr index 8027f55add673..09ede57f295e8 100644 --- a/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.ord_in_3.stderr +++ b/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.ord_in_3.stderr @@ -1,16 +1,16 @@ error: incorrect ordering of items (must be alphabetically ordered) - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:24:8 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:25:8 | LL | struct OrderedChecked { | ^^^^^^^^^^^^^^ | note: should be placed before `Unordered` - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:18:8 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:19:8 | LL | struct Unordered { | ^^^^^^^^^ note: the lint level is defined here - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:9:9 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:10:9 | LL | #![deny(clippy::arbitrary_source_item_ordering)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.ord_within.stderr b/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.ord_within.stderr index 333a601f6a952..7c515f050c127 100644 --- a/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.ord_within.stderr +++ b/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.ord_within.stderr @@ -1,48 +1,60 @@ error: incorrect ordering of items (must be alphabetically ordered) - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:24:8 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:25:8 | LL | struct OrderedChecked { | ^^^^^^^^^^^^^^ | note: should be placed before `Unordered` - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:18:8 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:19:8 | LL | struct Unordered { | ^^^^^^^^^ note: the lint level is defined here - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:9:9 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:10:9 | LL | #![deny(clippy::arbitrary_source_item_ordering)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: incorrect ordering of items (must be alphabetically ordered) - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:45:4 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:46:4 | LL | fn before_main() {} | ^^^^^^^^^^^ | note: should be placed before `main` - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:41:4 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:42:4 | LL | fn main() { | ^^^^ error: incorrect ordering of items (must be alphabetically ordered) - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:35:5 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:36:5 | LL | a: bool, | ^ | note: should be placed before `b` - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:34:5 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:35:5 | LL | b: bool, | ^ note: the lint level is defined here - --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:32:8 + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:33:8 | LL | #[deny(clippy::arbitrary_source_item_ordering)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -error: aborting due to 3 previous errors +error: incorrect ordering of items (must be alphabetically ordered) + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:52:11 + | +LL | const A: i8 = 0; + | ^ + | +note: should be placed before `B` + --> tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs:51:11 + | +LL | const B: i8 = 1; + | ^ + +error: aborting due to 4 previous errors diff --git a/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs b/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs index e32b921dd9659..cb6d0170b8f97 100644 --- a/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs +++ b/tests/ui-toml/arbitrary_source_item_ordering/selective_ordering.rs @@ -4,6 +4,7 @@ //@[ord_within] rustc-env:CLIPPY_CONF_DIR=tests/ui-toml/arbitrary_source_item_ordering/ord_within //@[ord_in_2] rustc-env:CLIPPY_CONF_DIR=tests/ui-toml/arbitrary_source_item_ordering/ord_in_2 //@[ord_in_3] rustc-env:CLIPPY_CONF_DIR=tests/ui-toml/arbitrary_source_item_ordering/ord_in_3 +//@compile-flags: --test #![allow(dead_code)] #![deny(clippy::arbitrary_source_item_ordering)] @@ -44,3 +45,10 @@ fn main() { fn before_main() {} //~[ord_within]^ arbitrary_source_item_ordering + +#[cfg(test)] +mod test { + const B: i8 = 1; + const A: i8 = 0; + //~[ord_within]^ arbitrary_source_item_ordering +} diff --git a/tests/ui-toml/await_holding_invalid_type_with_replacement/await_holding_invalid_type.stderr b/tests/ui-toml/await_holding_invalid_type_with_replacement/await_holding_invalid_type.stderr index 86e30409af068..d0fce3614a145 100644 --- a/tests/ui-toml/await_holding_invalid_type_with_replacement/await_holding_invalid_type.stderr +++ b/tests/ui-toml/await_holding_invalid_type_with_replacement/await_holding_invalid_type.stderr @@ -1,11 +1,8 @@ error: error reading Clippy's configuration file: replacement not allowed for this configuration - --> $DIR/tests/ui-toml/await_holding_invalid_type_with_replacement/clippy.toml:1:31 + --> $DIR/tests/ui-toml/await_holding_invalid_type_with_replacement/clippy.toml:2:5 | -LL | await-holding-invalid-types = [ - | _______________________________^ -LL | | { path = "std::string::String", replacement = "std::net::Ipv4Addr" }, -LL | | ] - | |_^ +LL | { path = "std::string::String", replacement = "std::net::Ipv4Addr" }, + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: aborting due to 1 previous error diff --git a/tests/ui-toml/collapsible_if/clippy.toml b/tests/ui-toml/collapsible_if/clippy.toml new file mode 100644 index 0000000000000..592cea90cff5c --- /dev/null +++ b/tests/ui-toml/collapsible_if/clippy.toml @@ -0,0 +1 @@ +lint-commented-code = true diff --git a/tests/ui-toml/collapsible_if/collapsible_if.fixed b/tests/ui-toml/collapsible_if/collapsible_if.fixed new file mode 100644 index 0000000000000..6f5cc47ba6c75 --- /dev/null +++ b/tests/ui-toml/collapsible_if/collapsible_if.fixed @@ -0,0 +1,34 @@ +#![allow(clippy::eq_op, clippy::nonminimal_bool)] + +#[rustfmt::skip] +#[warn(clippy::collapsible_if)] +fn main() { + let (x, y) = ("hello", "world"); + + if x == "hello" + // Comment must be kept + && y == "world" { + println!("Hello world!"); + } + //~^^^^^^ collapsible_if + + // The following tests check for the fix of https://github.com/rust-lang/rust-clippy/issues/798 + if x == "hello" // Inner comment + && y == "world" { + println!("Hello world!"); + } + //~^^^^^ collapsible_if + + if x == "hello" + /* Inner comment */ + && y == "world" { + println!("Hello world!"); + } + //~^^^^^^ collapsible_if + + if x == "hello" /* Inner comment */ + && y == "world" { + println!("Hello world!"); + } + //~^^^^^ collapsible_if +} diff --git a/tests/ui-toml/collapsible_if/collapsible_if.rs b/tests/ui-toml/collapsible_if/collapsible_if.rs new file mode 100644 index 0000000000000..868b4adcde502 --- /dev/null +++ b/tests/ui-toml/collapsible_if/collapsible_if.rs @@ -0,0 +1,38 @@ +#![allow(clippy::eq_op, clippy::nonminimal_bool)] + +#[rustfmt::skip] +#[warn(clippy::collapsible_if)] +fn main() { + let (x, y) = ("hello", "world"); + + if x == "hello" { + // Comment must be kept + if y == "world" { + println!("Hello world!"); + } + } + //~^^^^^^ collapsible_if + + // The following tests check for the fix of https://github.com/rust-lang/rust-clippy/issues/798 + if x == "hello" { // Inner comment + if y == "world" { + println!("Hello world!"); + } + } + //~^^^^^ collapsible_if + + if x == "hello" { + /* Inner comment */ + if y == "world" { + println!("Hello world!"); + } + } + //~^^^^^^ collapsible_if + + if x == "hello" { /* Inner comment */ + if y == "world" { + println!("Hello world!"); + } + } + //~^^^^^ collapsible_if +} diff --git a/tests/ui-toml/collapsible_if/collapsible_if.stderr b/tests/ui-toml/collapsible_if/collapsible_if.stderr new file mode 100644 index 0000000000000..357ce4ad32deb --- /dev/null +++ b/tests/ui-toml/collapsible_if/collapsible_if.stderr @@ -0,0 +1,80 @@ +error: this `if` statement can be collapsed + --> tests/ui-toml/collapsible_if/collapsible_if.rs:8:5 + | +LL | / if x == "hello" { +LL | | // Comment must be kept +LL | | if y == "world" { +LL | | println!("Hello world!"); +LL | | } +LL | | } + | |_____^ + | + = note: `-D clippy::collapsible-if` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::collapsible_if)]` +help: collapse nested if block + | +LL ~ if x == "hello" +LL | // Comment must be kept +LL ~ && y == "world" { +LL | println!("Hello world!"); +LL ~ } + | + +error: this `if` statement can be collapsed + --> tests/ui-toml/collapsible_if/collapsible_if.rs:17:5 + | +LL | / if x == "hello" { // Inner comment +LL | | if y == "world" { +LL | | println!("Hello world!"); +LL | | } +LL | | } + | |_____^ + | +help: collapse nested if block + | +LL ~ if x == "hello" // Inner comment +LL ~ && y == "world" { +LL | println!("Hello world!"); +LL ~ } + | + +error: this `if` statement can be collapsed + --> tests/ui-toml/collapsible_if/collapsible_if.rs:24:5 + | +LL | / if x == "hello" { +LL | | /* Inner comment */ +LL | | if y == "world" { +LL | | println!("Hello world!"); +LL | | } +LL | | } + | |_____^ + | +help: collapse nested if block + | +LL ~ if x == "hello" +LL | /* Inner comment */ +LL ~ && y == "world" { +LL | println!("Hello world!"); +LL ~ } + | + +error: this `if` statement can be collapsed + --> tests/ui-toml/collapsible_if/collapsible_if.rs:32:5 + | +LL | / if x == "hello" { /* Inner comment */ +LL | | if y == "world" { +LL | | println!("Hello world!"); +LL | | } +LL | | } + | |_____^ + | +help: collapse nested if block + | +LL ~ if x == "hello" /* Inner comment */ +LL ~ && y == "world" { +LL | println!("Hello world!"); +LL ~ } + | + +error: aborting due to 4 previous errors + diff --git a/tests/ui-toml/collapsible_if/collapsible_if_let_chains.fixed b/tests/ui-toml/collapsible_if/collapsible_if_let_chains.fixed new file mode 100644 index 0000000000000..f12273954c6dd --- /dev/null +++ b/tests/ui-toml/collapsible_if/collapsible_if_let_chains.fixed @@ -0,0 +1,25 @@ +#![feature(let_chains)] +#![warn(clippy::collapsible_if)] + +fn main() { + if let Some(a) = Some(3) + // with comment + && let Some(b) = Some(4) { + let _ = a + b; + } + //~^^^^^^ collapsible_if + + if let Some(a) = Some(3) + // with comment + && a + 1 == 4 { + let _ = a; + } + //~^^^^^^ collapsible_if + + if Some(3) == Some(4).map(|x| x - 1) + // with comment + && let Some(b) = Some(4) { + let _ = b; + } + //~^^^^^^ collapsible_if +} diff --git a/tests/ui-toml/collapsible_if/collapsible_if_let_chains.rs b/tests/ui-toml/collapsible_if/collapsible_if_let_chains.rs new file mode 100644 index 0000000000000..5a984d7a3cbee --- /dev/null +++ b/tests/ui-toml/collapsible_if/collapsible_if_let_chains.rs @@ -0,0 +1,28 @@ +#![feature(let_chains)] +#![warn(clippy::collapsible_if)] + +fn main() { + if let Some(a) = Some(3) { + // with comment + if let Some(b) = Some(4) { + let _ = a + b; + } + } + //~^^^^^^ collapsible_if + + if let Some(a) = Some(3) { + // with comment + if a + 1 == 4 { + let _ = a; + } + } + //~^^^^^^ collapsible_if + + if Some(3) == Some(4).map(|x| x - 1) { + // with comment + if let Some(b) = Some(4) { + let _ = b; + } + } + //~^^^^^^ collapsible_if +} diff --git a/tests/ui-toml/collapsible_if/collapsible_if_let_chains.stderr b/tests/ui-toml/collapsible_if/collapsible_if_let_chains.stderr new file mode 100644 index 0000000000000..c22a65a447301 --- /dev/null +++ b/tests/ui-toml/collapsible_if/collapsible_if_let_chains.stderr @@ -0,0 +1,64 @@ +error: this `if` statement can be collapsed + --> tests/ui-toml/collapsible_if/collapsible_if_let_chains.rs:5:5 + | +LL | / if let Some(a) = Some(3) { +LL | | // with comment +LL | | if let Some(b) = Some(4) { +LL | | let _ = a + b; +LL | | } +LL | | } + | |_____^ + | + = note: `-D clippy::collapsible-if` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::collapsible_if)]` +help: collapse nested if block + | +LL ~ if let Some(a) = Some(3) +LL | // with comment +LL ~ && let Some(b) = Some(4) { +LL | let _ = a + b; +LL ~ } + | + +error: this `if` statement can be collapsed + --> tests/ui-toml/collapsible_if/collapsible_if_let_chains.rs:13:5 + | +LL | / if let Some(a) = Some(3) { +LL | | // with comment +LL | | if a + 1 == 4 { +LL | | let _ = a; +LL | | } +LL | | } + | |_____^ + | +help: collapse nested if block + | +LL ~ if let Some(a) = Some(3) +LL | // with comment +LL ~ && a + 1 == 4 { +LL | let _ = a; +LL ~ } + | + +error: this `if` statement can be collapsed + --> tests/ui-toml/collapsible_if/collapsible_if_let_chains.rs:21:5 + | +LL | / if Some(3) == Some(4).map(|x| x - 1) { +LL | | // with comment +LL | | if let Some(b) = Some(4) { +LL | | let _ = b; +LL | | } +LL | | } + | |_____^ + | +help: collapse nested if block + | +LL ~ if Some(3) == Some(4).map(|x| x - 1) +LL | // with comment +LL ~ && let Some(b) = Some(4) { +LL | let _ = b; +LL ~ } + | + +error: aborting due to 3 previous errors + diff --git a/tests/ui-toml/macro_metavars_in_unsafe/default/test.rs b/tests/ui-toml/macro_metavars_in_unsafe/default/test.rs index 2465fe45645f1..d3d5b0c103e7f 100644 --- a/tests/ui-toml/macro_metavars_in_unsafe/default/test.rs +++ b/tests/ui-toml/macro_metavars_in_unsafe/default/test.rs @@ -251,6 +251,16 @@ pub mod issue13219 { } } +#[macro_export] +macro_rules! issue14488 { + ($e:expr) => { + #[expect(clippy::macro_metavars_in_unsafe)] + unsafe { + $e + } + }; +} + fn main() { allow_works!(1); simple!(1); @@ -271,4 +281,10 @@ fn main() { multiple_unsafe_blocks!(1, 1, 1); unsafe_from_root_ctxt!(unsafe { 1 }); nested_macros!(1, 1); + + // These two invocations lead to two expanded unsafe blocks, each with an `#[expect]` on it. + // Only of them gets a warning, which used to result in an unfulfilled expectation for the other + // expanded unsafe block. + issue14488!(1); + issue14488!(2); } diff --git a/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.fixed b/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.fixed index 36540bf1dcf73..2877871d0bf4c 100644 --- a/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.fixed +++ b/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.fixed @@ -1,3 +1,4 @@ +#![allow(clippy::uninlined_format_args)] #![deny(clippy::index_refutable_slice)] fn below_limit() { diff --git a/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.rs b/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.rs index da76bb20fd961..f958b92a102a3 100644 --- a/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.rs +++ b/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.rs @@ -1,3 +1,4 @@ +#![allow(clippy::uninlined_format_args)] #![deny(clippy::index_refutable_slice)] fn below_limit() { diff --git a/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.stderr b/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.stderr index 022deb330e6e3..e1a8941e102f5 100644 --- a/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.stderr +++ b/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.stderr @@ -1,11 +1,11 @@ error: this binding can be a slice pattern to avoid indexing - --> tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.rs:5:17 + --> tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.rs:6:17 | LL | if let Some(slice) = slice { | ^^^^^ | note: the lint level is defined here - --> tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.rs:1:9 + --> tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.rs:2:9 | LL | #![deny(clippy::index_refutable_slice)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui-toml/strict_non_send_fields_in_send_ty/test.rs b/tests/ui-toml/strict_non_send_fields_in_send_ty/test.rs index 08a8e1186d5cb..13e19e9fe14bf 100644 --- a/tests/ui-toml/strict_non_send_fields_in_send_ty/test.rs +++ b/tests/ui-toml/strict_non_send_fields_in_send_ty/test.rs @@ -29,7 +29,7 @@ unsafe impl Send for MyOption {} //~^ non_send_fields_in_send_ty // All fields are disallowed when raw pointer heuristic is off -extern "C" { +unsafe extern "C" { type NonSend; } diff --git a/tests/ui-toml/toml_inconsistent_struct_constructor/clippy.toml b/tests/ui-toml/toml_inconsistent_struct_constructor/clippy.toml index f43c9d97e825d..3cb8523562a8f 100644 --- a/tests/ui-toml/toml_inconsistent_struct_constructor/clippy.toml +++ b/tests/ui-toml/toml_inconsistent_struct_constructor/clippy.toml @@ -1 +1 @@ -lint-inconsistent-struct-field-initializers = true +check-inconsistent-struct-field-initializers = true diff --git a/tests/ui-toml/toml_invalid_path/clippy.toml b/tests/ui-toml/toml_invalid_path/clippy.toml new file mode 100644 index 0000000000000..6d0d732a92237 --- /dev/null +++ b/tests/ui-toml/toml_invalid_path/clippy.toml @@ -0,0 +1,14 @@ +[[disallowed-types]] +path = "std::result::Result::Err" + +[[disallowed-macros]] +path = "bool" + +[[disallowed-methods]] +path = "std::process::current_exe" + +# negative test + +[[disallowed-methods]] +path = "std::current_exe" +allow-invalid = true diff --git a/tests/ui-toml/toml_invalid_path/conf_invalid_path.rs b/tests/ui-toml/toml_invalid_path/conf_invalid_path.rs new file mode 100644 index 0000000000000..c152038270348 --- /dev/null +++ b/tests/ui-toml/toml_invalid_path/conf_invalid_path.rs @@ -0,0 +1,5 @@ +//@error-in-other-file: expected a macro, found a primitive type +//@error-in-other-file: `std::process::current_exe` does not refer to an existing function +//@error-in-other-file: expected a type, found a tuple variant + +fn main() {} diff --git a/tests/ui-toml/toml_invalid_path/conf_invalid_path.stderr b/tests/ui-toml/toml_invalid_path/conf_invalid_path.stderr new file mode 100644 index 0000000000000..82550108eba53 --- /dev/null +++ b/tests/ui-toml/toml_invalid_path/conf_invalid_path.stderr @@ -0,0 +1,23 @@ +warning: expected a macro, found a primitive type + --> $DIR/tests/ui-toml/toml_invalid_path/clippy.toml:4:1 + | +LL | / [[disallowed-macros]] +LL | | path = "bool" + | |_____________^ + +warning: `std::process::current_exe` does not refer to an existing function + --> $DIR/tests/ui-toml/toml_invalid_path/clippy.toml:7:1 + | +LL | / [[disallowed-methods]] +LL | | path = "std::process::current_exe" + | |__________________________________^ + +warning: expected a type, found a tuple variant + --> $DIR/tests/ui-toml/toml_invalid_path/clippy.toml:1:1 + | +LL | / [[disallowed-types]] +LL | | path = "std::result::Result::Err" + | |_________________________________^ + +warning: 3 warnings emitted + diff --git a/tests/ui-toml/toml_unknown_key/conf_unknown_key.stderr b/tests/ui-toml/toml_unknown_key/conf_unknown_key.stderr index fee5b01b68982..f2eaa66a4ae41 100644 --- a/tests/ui-toml/toml_unknown_key/conf_unknown_key.stderr +++ b/tests/ui-toml/toml_unknown_key/conf_unknown_key.stderr @@ -29,12 +29,11 @@ error: error reading Clippy's configuration file: unknown field `foobar`, expect array-size-threshold avoid-breaking-exported-api await-holding-invalid-types - blacklisted-names cargo-ignore-publish check-incompatible-msrv-in-tests + check-inconsistent-struct-field-initializers check-private-items cognitive-complexity-threshold - cyclomatic-complexity-threshold disallowed-macros disallowed-methods disallowed-names @@ -49,7 +48,7 @@ error: error reading Clippy's configuration file: unknown field `foobar`, expect future-size-threshold ignore-interior-mutability large-error-threshold - lint-inconsistent-struct-field-initializers + lint-commented-code literal-representation-threshold matches-for-let-else max-fn-params-bools @@ -122,12 +121,11 @@ error: error reading Clippy's configuration file: unknown field `barfoo`, expect array-size-threshold avoid-breaking-exported-api await-holding-invalid-types - blacklisted-names cargo-ignore-publish check-incompatible-msrv-in-tests + check-inconsistent-struct-field-initializers check-private-items cognitive-complexity-threshold - cyclomatic-complexity-threshold disallowed-macros disallowed-methods disallowed-names @@ -142,7 +140,7 @@ error: error reading Clippy's configuration file: unknown field `barfoo`, expect future-size-threshold ignore-interior-mutability large-error-threshold - lint-inconsistent-struct-field-initializers + lint-commented-code literal-representation-threshold matches-for-let-else max-fn-params-bools @@ -215,12 +213,11 @@ error: error reading Clippy's configuration file: unknown field `allow_mixed_uni array-size-threshold avoid-breaking-exported-api await-holding-invalid-types - blacklisted-names cargo-ignore-publish check-incompatible-msrv-in-tests + check-inconsistent-struct-field-initializers check-private-items cognitive-complexity-threshold - cyclomatic-complexity-threshold disallowed-macros disallowed-methods disallowed-names @@ -235,7 +232,7 @@ error: error reading Clippy's configuration file: unknown field `allow_mixed_uni future-size-threshold ignore-interior-mutability large-error-threshold - lint-inconsistent-struct-field-initializers + lint-commented-code literal-representation-threshold matches-for-let-else max-fn-params-bools diff --git a/tests/ui-toml/wildcard_imports/wildcard_imports.fixed b/tests/ui-toml/wildcard_imports/wildcard_imports.fixed index af72d6be0e096..20511cbed165e 100644 --- a/tests/ui-toml/wildcard_imports/wildcard_imports.fixed +++ b/tests/ui-toml/wildcard_imports/wildcard_imports.fixed @@ -15,7 +15,7 @@ mod my_crate { } } -use utils::{BAR, print}; +pub use utils::{BAR, print}; //~^ ERROR: usage of wildcard import use my_crate::utils::my_util_fn; //~^ ERROR: usage of wildcard import diff --git a/tests/ui-toml/wildcard_imports/wildcard_imports.rs b/tests/ui-toml/wildcard_imports/wildcard_imports.rs index 91009dd8835f8..8d05910f471ba 100644 --- a/tests/ui-toml/wildcard_imports/wildcard_imports.rs +++ b/tests/ui-toml/wildcard_imports/wildcard_imports.rs @@ -15,7 +15,7 @@ mod my_crate { } } -use utils::*; +pub use utils::*; //~^ ERROR: usage of wildcard import use my_crate::utils::*; //~^ ERROR: usage of wildcard import diff --git a/tests/ui-toml/wildcard_imports/wildcard_imports.stderr b/tests/ui-toml/wildcard_imports/wildcard_imports.stderr index 3d3be965aa411..5e624dd6c3cdc 100644 --- a/tests/ui-toml/wildcard_imports/wildcard_imports.stderr +++ b/tests/ui-toml/wildcard_imports/wildcard_imports.stderr @@ -1,8 +1,8 @@ error: usage of wildcard import - --> tests/ui-toml/wildcard_imports/wildcard_imports.rs:18:5 + --> tests/ui-toml/wildcard_imports/wildcard_imports.rs:18:9 | -LL | use utils::*; - | ^^^^^^^^ help: try: `utils::{BAR, print}` +LL | pub use utils::*; + | ^^^^^^^^ help: try: `utils::{BAR, print}` | = note: `-D clippy::wildcard-imports` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::wildcard_imports)]` diff --git a/tests/ui/asm_syntax_not_x86.rs b/tests/ui/asm_syntax_not_x86.rs index edcd5247f18ce..361bc2033934a 100644 --- a/tests/ui/asm_syntax_not_x86.rs +++ b/tests/ui/asm_syntax_not_x86.rs @@ -8,9 +8,11 @@ mod dont_warn { use std::arch::{asm, global_asm}; pub(super) unsafe fn use_asm() { - asm!(""); - asm!("", options()); - asm!("", options(nostack)); + unsafe { + asm!(""); + asm!("", options()); + asm!("", options(nostack)); + } } global_asm!(""); diff --git a/tests/ui/asm_syntax_x86.rs b/tests/ui/asm_syntax_x86.rs index 4e91f27cd3189..30401c9a0448a 100644 --- a/tests/ui/asm_syntax_x86.rs +++ b/tests/ui/asm_syntax_x86.rs @@ -5,17 +5,19 @@ mod warn_intel { use std::arch::{asm, global_asm}; pub(super) unsafe fn use_asm() { - asm!(""); - //~^ inline_asm_x86_intel_syntax + unsafe { + asm!(""); + //~^ inline_asm_x86_intel_syntax - asm!("", options()); - //~^ inline_asm_x86_intel_syntax + asm!("", options()); + //~^ inline_asm_x86_intel_syntax - asm!("", options(nostack)); - //~^ inline_asm_x86_intel_syntax + asm!("", options(nostack)); + //~^ inline_asm_x86_intel_syntax - asm!("", options(att_syntax)); - asm!("", options(nostack, att_syntax)); + asm!("", options(att_syntax)); + asm!("", options(nostack, att_syntax)); + } } global_asm!(""); @@ -32,14 +34,16 @@ mod warn_att { use std::arch::{asm, global_asm}; pub(super) unsafe fn use_asm() { - asm!(""); - asm!("", options()); - asm!("", options(nostack)); - asm!("", options(att_syntax)); - //~^ inline_asm_x86_att_syntax - - asm!("", options(nostack, att_syntax)); - //~^ inline_asm_x86_att_syntax + unsafe { + asm!(""); + asm!("", options()); + asm!("", options(nostack)); + asm!("", options(att_syntax)); + //~^ inline_asm_x86_att_syntax + + asm!("", options(nostack, att_syntax)); + //~^ inline_asm_x86_att_syntax + } } global_asm!(""); diff --git a/tests/ui/asm_syntax_x86.stderr b/tests/ui/asm_syntax_x86.stderr index 2dcd955f03479..8e068cf2349cd 100644 --- a/tests/ui/asm_syntax_x86.stderr +++ b/tests/ui/asm_syntax_x86.stderr @@ -1,31 +1,31 @@ error: Intel x86 assembly syntax used - --> tests/ui/asm_syntax_x86.rs:8:9 + --> tests/ui/asm_syntax_x86.rs:9:13 | -LL | asm!(""); - | ^^^^^^^^ +LL | asm!(""); + | ^^^^^^^^ | = help: use AT&T x86 assembly syntax = note: `-D clippy::inline-asm-x86-intel-syntax` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::inline_asm_x86_intel_syntax)]` error: Intel x86 assembly syntax used - --> tests/ui/asm_syntax_x86.rs:11:9 + --> tests/ui/asm_syntax_x86.rs:12:13 | -LL | asm!("", options()); - | ^^^^^^^^^^^^^^^^^^^ +LL | asm!("", options()); + | ^^^^^^^^^^^^^^^^^^^ | = help: use AT&T x86 assembly syntax error: Intel x86 assembly syntax used - --> tests/ui/asm_syntax_x86.rs:14:9 + --> tests/ui/asm_syntax_x86.rs:15:13 | -LL | asm!("", options(nostack)); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^ +LL | asm!("", options(nostack)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: use AT&T x86 assembly syntax error: Intel x86 assembly syntax used - --> tests/ui/asm_syntax_x86.rs:21:5 + --> tests/ui/asm_syntax_x86.rs:23:5 | LL | global_asm!(""); | ^^^^^^^^^^^^^^^ @@ -33,7 +33,7 @@ LL | global_asm!(""); = help: use AT&T x86 assembly syntax error: Intel x86 assembly syntax used - --> tests/ui/asm_syntax_x86.rs:24:5 + --> tests/ui/asm_syntax_x86.rs:26:5 | LL | global_asm!("", options()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -41,25 +41,25 @@ LL | global_asm!("", options()); = help: use AT&T x86 assembly syntax error: AT&T x86 assembly syntax used - --> tests/ui/asm_syntax_x86.rs:38:9 + --> tests/ui/asm_syntax_x86.rs:41:13 | -LL | asm!("", options(att_syntax)); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +LL | asm!("", options(att_syntax)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: use Intel x86 assembly syntax = note: `-D clippy::inline-asm-x86-att-syntax` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::inline_asm_x86_att_syntax)]` error: AT&T x86 assembly syntax used - --> tests/ui/asm_syntax_x86.rs:41:9 + --> tests/ui/asm_syntax_x86.rs:44:13 | -LL | asm!("", options(nostack, att_syntax)); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +LL | asm!("", options(nostack, att_syntax)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: use Intel x86 assembly syntax error: AT&T x86 assembly syntax used - --> tests/ui/asm_syntax_x86.rs:47:5 + --> tests/ui/asm_syntax_x86.rs:51:5 | LL | global_asm!("", options(att_syntax)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/author/if.rs b/tests/ui/author/if.rs index 59bc9f5bfa5c2..abefc34cf6b3e 100644 --- a/tests/ui/author/if.rs +++ b/tests/ui/author/if.rs @@ -1,6 +1,6 @@ //@ check-pass -#[allow(clippy::all)] +#![allow(clippy::all)] fn main() { #[clippy::author] diff --git a/tests/ui/author/macro_in_closure.rs b/tests/ui/author/macro_in_closure.rs index 8a02f38fad87b..373f0148d475a 100644 --- a/tests/ui/author/macro_in_closure.rs +++ b/tests/ui/author/macro_in_closure.rs @@ -1,5 +1,7 @@ //@ check-pass +#![allow(clippy::uninlined_format_args)] + fn main() { #[clippy::author] let print_text = |x| println!("{}", x); diff --git a/tests/ui/author/macro_in_loop.rs b/tests/ui/author/macro_in_loop.rs index 84ffe416e839b..f68275fefaaa3 100644 --- a/tests/ui/author/macro_in_loop.rs +++ b/tests/ui/author/macro_in_loop.rs @@ -1,6 +1,7 @@ //@ check-pass #![feature(stmt_expr_attributes)] +#![allow(clippy::uninlined_format_args)] fn main() { #[clippy::author] diff --git a/tests/ui/auxiliary/proc_macros.rs b/tests/ui/auxiliary/proc_macros.rs index 1a2a4ec231143..7a4cc4fa9ee8e 100644 --- a/tests/ui/auxiliary/proc_macros.rs +++ b/tests/ui/auxiliary/proc_macros.rs @@ -131,12 +131,12 @@ fn write_with_span(s: Span, mut input: IntoIter, out: &mut TokenStream) -> Resul pub fn make_it_big(input: TokenStream) -> TokenStream { let mut expr_repeat = syn::parse_macro_input!(input as syn::ExprRepeat); let len_span = expr_repeat.len.span(); - if let syn::Expr::Lit(expr_lit) = &mut *expr_repeat.len { - if let syn::Lit::Int(lit_int) = &expr_lit.lit { - let orig_val = lit_int.base10_parse::().expect("not a valid length parameter"); - let new_val = orig_val.saturating_mul(10); - expr_lit.lit = syn::parse_quote_spanned!( len_span => #new_val); - } + if let syn::Expr::Lit(expr_lit) = &mut *expr_repeat.len + && let syn::Lit::Int(lit_int) = &expr_lit.lit + { + let orig_val = lit_int.base10_parse::().expect("not a valid length parameter"); + let new_val = orig_val.saturating_mul(10); + expr_lit.lit = syn::parse_quote_spanned!( len_span => #new_val); } quote::quote!(#expr_repeat).into() } diff --git a/tests/ui/blocks_in_conditions.fixed b/tests/ui/blocks_in_conditions.fixed index cd307e803d0c9..c82276b358e1d 100644 --- a/tests/ui/blocks_in_conditions.fixed +++ b/tests/ui/blocks_in_conditions.fixed @@ -1,12 +1,7 @@ //@aux-build:proc_macro_attr.rs #![warn(clippy::blocks_in_conditions)] -#![allow( - unused, - clippy::let_and_return, - clippy::needless_if, - clippy::missing_transmute_annotations -)] +#![allow(unused, clippy::needless_if, clippy::missing_transmute_annotations)] #![warn(clippy::nonminimal_bool)] macro_rules! blocky { @@ -71,28 +66,6 @@ fn block_in_assert() { ); } -// issue #11814 -fn block_in_match_expr(num: i32) -> i32 { - let res = { - //~^ ERROR: in a `match` scrutinee, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a `let` - let opt = Some(2); - opt - }; match res { - Some(0) => 1, - Some(n) => num * 2, - None => 0, - }; - - match unsafe { - let hearty_hearty_hearty = vec![240, 159, 146, 150]; - String::from_utf8_unchecked(hearty_hearty_hearty).as_str() - } { - "💖" => 1, - "what" => 2, - _ => 3, - } -} - // issue #12162 macro_rules! timed { ($name:expr, $body:expr $(,)?) => {{ diff --git a/tests/ui/blocks_in_conditions.rs b/tests/ui/blocks_in_conditions.rs index 6a211c8edfd4f..6a4a7c6210686 100644 --- a/tests/ui/blocks_in_conditions.rs +++ b/tests/ui/blocks_in_conditions.rs @@ -1,12 +1,7 @@ //@aux-build:proc_macro_attr.rs #![warn(clippy::blocks_in_conditions)] -#![allow( - unused, - clippy::let_and_return, - clippy::needless_if, - clippy::missing_transmute_annotations -)] +#![allow(unused, clippy::needless_if, clippy::missing_transmute_annotations)] #![warn(clippy::nonminimal_bool)] macro_rules! blocky { @@ -71,28 +66,6 @@ fn block_in_assert() { ); } -// issue #11814 -fn block_in_match_expr(num: i32) -> i32 { - match { - //~^ ERROR: in a `match` scrutinee, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a `let` - let opt = Some(2); - opt - } { - Some(0) => 1, - Some(n) => num * 2, - None => 0, - }; - - match unsafe { - let hearty_hearty_hearty = vec![240, 159, 146, 150]; - String::from_utf8_unchecked(hearty_hearty_hearty).as_str() - } { - "💖" => 1, - "what" => 2, - _ => 3, - } -} - // issue #12162 macro_rules! timed { ($name:expr, $body:expr $(,)?) => {{ diff --git a/tests/ui/blocks_in_conditions.stderr b/tests/ui/blocks_in_conditions.stderr index da21344a84289..e57eca5dceef5 100644 --- a/tests/ui/blocks_in_conditions.stderr +++ b/tests/ui/blocks_in_conditions.stderr @@ -1,5 +1,5 @@ error: in an `if` condition, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a `let` - --> tests/ui/blocks_in_conditions.rs:30:5 + --> tests/ui/blocks_in_conditions.rs:25:5 | LL | / if { LL | | @@ -20,13 +20,13 @@ LL ~ }; if res { | error: omit braces around single expression condition - --> tests/ui/blocks_in_conditions.rs:42:8 + --> tests/ui/blocks_in_conditions.rs:37:8 | LL | if { true } { 6 } else { 10 } | ^^^^^^^^ help: try: `true` error: this boolean expression can be simplified - --> tests/ui/blocks_in_conditions.rs:48:8 + --> tests/ui/blocks_in_conditions.rs:43:8 | LL | if true && x == 3 { 6 } else { 10 } | ^^^^^^^^^^^^^^ help: try: `x == 3` @@ -34,24 +34,5 @@ LL | if true && x == 3 { 6 } else { 10 } = note: `-D clippy::nonminimal-bool` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::nonminimal_bool)]` -error: in a `match` scrutinee, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a `let` - --> tests/ui/blocks_in_conditions.rs:76:5 - | -LL | / match { -LL | | -LL | | let opt = Some(2); -LL | | opt -LL | | } { - | |_____^ - | -help: try - | -LL ~ let res = { -LL + -LL + let opt = Some(2); -LL + opt -LL ~ }; match res { - | - -error: aborting due to 4 previous errors +error: aborting due to 3 previous errors diff --git a/tests/ui/blocks_in_conditions_2021.fixed b/tests/ui/blocks_in_conditions_2021.fixed new file mode 100644 index 0000000000000..c7cc643dba679 --- /dev/null +++ b/tests/ui/blocks_in_conditions_2021.fixed @@ -0,0 +1,25 @@ +//@edition: 2021 + +#![allow(clippy::let_and_return)] + +// issue #11814 +fn block_in_match_expr(num: i32) -> i32 { + let res = { + //~^ ERROR: in a `match` scrutinee, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a `let` + let opt = Some(2); + opt + }; match res { + Some(0) => 1, + Some(n) => num * 2, + None => 0, + }; + + match unsafe { + let hearty_hearty_hearty = vec![240, 159, 146, 150]; + String::from_utf8_unchecked(hearty_hearty_hearty).as_str() + } { + "💖" => 1, + "what" => 2, + _ => 3, + } +} diff --git a/tests/ui/blocks_in_conditions_2021.rs b/tests/ui/blocks_in_conditions_2021.rs new file mode 100644 index 0000000000000..a911237f5f795 --- /dev/null +++ b/tests/ui/blocks_in_conditions_2021.rs @@ -0,0 +1,25 @@ +//@edition: 2021 + +#![allow(clippy::let_and_return)] + +// issue #11814 +fn block_in_match_expr(num: i32) -> i32 { + match { + //~^ ERROR: in a `match` scrutinee, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a `let` + let opt = Some(2); + opt + } { + Some(0) => 1, + Some(n) => num * 2, + None => 0, + }; + + match unsafe { + let hearty_hearty_hearty = vec![240, 159, 146, 150]; + String::from_utf8_unchecked(hearty_hearty_hearty).as_str() + } { + "💖" => 1, + "what" => 2, + _ => 3, + } +} diff --git a/tests/ui/blocks_in_conditions_2021.stderr b/tests/ui/blocks_in_conditions_2021.stderr new file mode 100644 index 0000000000000..497ee9d679dde --- /dev/null +++ b/tests/ui/blocks_in_conditions_2021.stderr @@ -0,0 +1,23 @@ +error: in a `match` scrutinee, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a `let` + --> tests/ui/blocks_in_conditions_2021.rs:7:5 + | +LL | / match { +LL | | +LL | | let opt = Some(2); +LL | | opt +LL | | } { + | |_____^ + | + = note: `-D clippy::blocks-in-conditions` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::blocks_in_conditions)]` +help: try + | +LL ~ let res = { +LL + +LL + let opt = Some(2); +LL + opt +LL ~ }; match res { + | + +error: aborting due to 1 previous error + diff --git a/tests/ui/bool_to_int_with_if.fixed b/tests/ui/bool_to_int_with_if.fixed index 0080801d46b78..ed6141244b409 100644 --- a/tests/ui/bool_to_int_with_if.fixed +++ b/tests/ui/bool_to_int_with_if.fixed @@ -117,3 +117,27 @@ fn if_let(a: Enum, b: Enum) { 0 }; } + +fn issue14628() { + macro_rules! mac { + (if $cond:expr, $then:expr, $else:expr) => { + if $cond { $then } else { $else } + }; + (zero) => { + 0 + }; + (one) => { + 1 + }; + } + + let _ = i32::from(dbg!(4 > 0)); + //~^ bool_to_int_with_if + + let _ = dbg!(i32::from(4 > 0)); + //~^ bool_to_int_with_if + + let _ = mac!(if 4 > 0, 1, 0); + let _ = if 4 > 0 { mac!(one) } else { 0 }; + let _ = if 4 > 0 { 1 } else { mac!(zero) }; +} diff --git a/tests/ui/bool_to_int_with_if.rs b/tests/ui/bool_to_int_with_if.rs index 72c7e2c71c560..3f1f1c766e460 100644 --- a/tests/ui/bool_to_int_with_if.rs +++ b/tests/ui/bool_to_int_with_if.rs @@ -157,3 +157,27 @@ fn if_let(a: Enum, b: Enum) { 0 }; } + +fn issue14628() { + macro_rules! mac { + (if $cond:expr, $then:expr, $else:expr) => { + if $cond { $then } else { $else } + }; + (zero) => { + 0 + }; + (one) => { + 1 + }; + } + + let _ = if dbg!(4 > 0) { 1 } else { 0 }; + //~^ bool_to_int_with_if + + let _ = dbg!(if 4 > 0 { 1 } else { 0 }); + //~^ bool_to_int_with_if + + let _ = mac!(if 4 > 0, 1, 0); + let _ = if 4 > 0 { mac!(one) } else { 0 }; + let _ = if 4 > 0 { 1 } else { mac!(zero) }; +} diff --git a/tests/ui/bool_to_int_with_if.stderr b/tests/ui/bool_to_int_with_if.stderr index 415e80f8d73d1..94089bc6dc8ef 100644 --- a/tests/ui/bool_to_int_with_if.stderr +++ b/tests/ui/bool_to_int_with_if.stderr @@ -114,5 +114,21 @@ LL | if a { 1 } else { 0 } | = note: `a as u8` or `a.into()` can also be valid options -error: aborting due to 9 previous errors +error: boolean to int conversion using if + --> tests/ui/bool_to_int_with_if.rs:174:13 + | +LL | let _ = if dbg!(4 > 0) { 1 } else { 0 }; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with from: `i32::from(dbg!(4 > 0))` + | + = note: `dbg!(4 > 0) as i32` or `dbg!(4 > 0).into()` can also be valid options + +error: boolean to int conversion using if + --> tests/ui/bool_to_int_with_if.rs:177:18 + | +LL | let _ = dbg!(if 4 > 0 { 1 } else { 0 }); + | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with from: `i32::from(4 > 0)` + | + = note: `(4 > 0) as i32` or `(4 > 0).into()` can also be valid options + +error: aborting due to 11 previous errors diff --git a/tests/ui/borrow_as_ptr.fixed b/tests/ui/borrow_as_ptr.fixed index 3dca06fce4b8d..3ba2eea59f0b0 100644 --- a/tests/ui/borrow_as_ptr.fixed +++ b/tests/ui/borrow_as_ptr.fixed @@ -29,3 +29,21 @@ fn issue_13882() { let _raw = (&raw mut x[1]).wrapping_offset(-1); //~^ borrow_as_ptr } + +fn implicit_cast() { + let val = 1; + let p: *const i32 = &raw const val; + //~^ borrow_as_ptr + + let mut val = 1; + let p: *mut i32 = &raw mut val; + //~^ borrow_as_ptr + + let mut val = 1; + // Only lint the leftmost argument, the rightmost is ref to a temporary + core::ptr::eq(&raw const val, &1); + //~^ borrow_as_ptr + + // Do not lint references to temporaries + core::ptr::eq(&0i32, &1i32); +} diff --git a/tests/ui/borrow_as_ptr.rs b/tests/ui/borrow_as_ptr.rs index 3559dc23d0185..8cdd0512da5f7 100644 --- a/tests/ui/borrow_as_ptr.rs +++ b/tests/ui/borrow_as_ptr.rs @@ -29,3 +29,21 @@ fn issue_13882() { let _raw = (&mut x[1] as *mut i32).wrapping_offset(-1); //~^ borrow_as_ptr } + +fn implicit_cast() { + let val = 1; + let p: *const i32 = &val; + //~^ borrow_as_ptr + + let mut val = 1; + let p: *mut i32 = &mut val; + //~^ borrow_as_ptr + + let mut val = 1; + // Only lint the leftmost argument, the rightmost is ref to a temporary + core::ptr::eq(&val, &1); + //~^ borrow_as_ptr + + // Do not lint references to temporaries + core::ptr::eq(&0i32, &1i32); +} diff --git a/tests/ui/borrow_as_ptr.stderr b/tests/ui/borrow_as_ptr.stderr index 4a9f2ed4aa003..b1fcce49403c8 100644 --- a/tests/ui/borrow_as_ptr.stderr +++ b/tests/ui/borrow_as_ptr.stderr @@ -25,5 +25,38 @@ error: borrow as raw pointer LL | let _raw = (&mut x[1] as *mut i32).wrapping_offset(-1); | ^^^^^^^^^^^^^^^^^^^^^ help: try: `&raw mut x[1]` -error: aborting due to 4 previous errors +error: implicit borrow as raw pointer + --> tests/ui/borrow_as_ptr.rs:35:25 + | +LL | let p: *const i32 = &val; + | ^^^^ + | +help: use a raw pointer instead + | +LL | let p: *const i32 = &raw const val; + | +++++++++ + +error: implicit borrow as raw pointer + --> tests/ui/borrow_as_ptr.rs:39:23 + | +LL | let p: *mut i32 = &mut val; + | ^^^^^^^^ + | +help: use a raw pointer instead + | +LL | let p: *mut i32 = &raw mut val; + | +++ + +error: implicit borrow as raw pointer + --> tests/ui/borrow_as_ptr.rs:44:19 + | +LL | core::ptr::eq(&val, &1); + | ^^^^ + | +help: use a raw pointer instead + | +LL | core::ptr::eq(&raw const val, &1); + | +++++++++ + +error: aborting due to 7 previous errors diff --git a/tests/ui/borrow_deref_ref.fixed b/tests/ui/borrow_deref_ref.fixed index 17c224f10bfea..765dd75fceb92 100644 --- a/tests/ui/borrow_deref_ref.fixed +++ b/tests/ui/borrow_deref_ref.fixed @@ -81,3 +81,46 @@ fn issue_13584() { let p = &raw const *s; let _ = p as *const i8; } + +mod issue_9905 { + use std::{fs, io}; + + pub enum File { + Stdio, + File(fs::File), + } + + impl io::Read for &'_ File { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + match self { + File::Stdio => io::stdin().read(buf), + File::File(file) => (&*file).read(buf), + } + } + } +} + +mod issue_11346 { + struct Struct; + + impl Struct { + fn foo(self: &mut &Self) {} + } + + trait Trait { + fn bar(&mut self) {} + } + + impl Trait for &Struct {} + + fn bar() { + let s = &Struct; + (&*s).foo(); + (&*s).bar(); + + let mut s = &Struct; + s.foo(); // To avoid a warning about `s` not needing to be mutable + s.foo(); + //~^ borrow_deref_ref + } +} diff --git a/tests/ui/borrow_deref_ref.rs b/tests/ui/borrow_deref_ref.rs index 130ed2903dc61..8ee66bfa881ab 100644 --- a/tests/ui/borrow_deref_ref.rs +++ b/tests/ui/borrow_deref_ref.rs @@ -81,3 +81,46 @@ fn issue_13584() { let p = &raw const *s; let _ = p as *const i8; } + +mod issue_9905 { + use std::{fs, io}; + + pub enum File { + Stdio, + File(fs::File), + } + + impl io::Read for &'_ File { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + match self { + File::Stdio => io::stdin().read(buf), + File::File(file) => (&*file).read(buf), + } + } + } +} + +mod issue_11346 { + struct Struct; + + impl Struct { + fn foo(self: &mut &Self) {} + } + + trait Trait { + fn bar(&mut self) {} + } + + impl Trait for &Struct {} + + fn bar() { + let s = &Struct; + (&*s).foo(); + (&*s).bar(); + + let mut s = &Struct; + s.foo(); // To avoid a warning about `s` not needing to be mutable + (&*s).foo(); + //~^ borrow_deref_ref + } +} diff --git a/tests/ui/borrow_deref_ref.stderr b/tests/ui/borrow_deref_ref.stderr index f5868aa874900..3d55da25b9b20 100644 --- a/tests/ui/borrow_deref_ref.stderr +++ b/tests/ui/borrow_deref_ref.stderr @@ -19,5 +19,11 @@ error: deref on an immutable reference LL | let addr_y = &&*x as *const _ as usize; // assert ok | ^^^ help: if you would like to reborrow, try removing `&*`: `x` -error: aborting due to 3 previous errors +error: deref on an immutable reference + --> tests/ui/borrow_deref_ref.rs:123:9 + | +LL | (&*s).foo(); + | ^^^^^ help: if you would like to reborrow, try removing `&*`: `s` + +error: aborting due to 4 previous errors diff --git a/tests/ui/box_collection.rs b/tests/ui/box_collection.rs index 0f7d3c74ddd07..7ae5446924fa0 100644 --- a/tests/ui/box_collection.rs +++ b/tests/ui/box_collection.rs @@ -1,4 +1,3 @@ -#![warn(clippy::all)] #![allow( clippy::boxed_local, clippy::needless_pass_by_value, diff --git a/tests/ui/box_collection.stderr b/tests/ui/box_collection.stderr index ebbc3d92b57f7..d730e2dcc1145 100644 --- a/tests/ui/box_collection.stderr +++ b/tests/ui/box_collection.stderr @@ -1,5 +1,5 @@ error: you seem to be trying to use `Box>`. Consider using just `Vec<..>` - --> tests/ui/box_collection.rs:21:15 + --> tests/ui/box_collection.rs:20:15 | LL | fn test1(foo: Box>) {} | ^^^^^^^^^^^^^^ @@ -9,7 +9,7 @@ LL | fn test1(foo: Box>) {} = help: to override `-D warnings` add `#[allow(clippy::box_collection)]` error: you seem to be trying to use `Box`. Consider using just `String` - --> tests/ui/box_collection.rs:29:15 + --> tests/ui/box_collection.rs:28:15 | LL | fn test3(foo: Box) {} | ^^^^^^^^^^^ @@ -17,7 +17,7 @@ LL | fn test3(foo: Box) {} = help: `String` is already on the heap, `Box` makes an extra allocation error: you seem to be trying to use `Box>`. Consider using just `HashMap<..>` - --> tests/ui/box_collection.rs:32:15 + --> tests/ui/box_collection.rs:31:15 | LL | fn test4(foo: Box>) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -25,7 +25,7 @@ LL | fn test4(foo: Box>) {} = help: `HashMap<..>` is already on the heap, `Box>` makes an extra allocation error: you seem to be trying to use `Box>`. Consider using just `HashSet<..>` - --> tests/ui/box_collection.rs:35:15 + --> tests/ui/box_collection.rs:34:15 | LL | fn test5(foo: Box>) {} | ^^^^^^^^^^^^^^^^^ @@ -33,7 +33,7 @@ LL | fn test5(foo: Box>) {} = help: `HashSet<..>` is already on the heap, `Box>` makes an extra allocation error: you seem to be trying to use `Box>`. Consider using just `VecDeque<..>` - --> tests/ui/box_collection.rs:38:15 + --> tests/ui/box_collection.rs:37:15 | LL | fn test6(foo: Box>) {} | ^^^^^^^^^^^^^^^^^^ @@ -41,7 +41,7 @@ LL | fn test6(foo: Box>) {} = help: `VecDeque<..>` is already on the heap, `Box>` makes an extra allocation error: you seem to be trying to use `Box>`. Consider using just `LinkedList<..>` - --> tests/ui/box_collection.rs:41:15 + --> tests/ui/box_collection.rs:40:15 | LL | fn test7(foo: Box>) {} | ^^^^^^^^^^^^^^^^^^^^ @@ -49,7 +49,7 @@ LL | fn test7(foo: Box>) {} = help: `LinkedList<..>` is already on the heap, `Box>` makes an extra allocation error: you seem to be trying to use `Box>`. Consider using just `BTreeMap<..>` - --> tests/ui/box_collection.rs:44:15 + --> tests/ui/box_collection.rs:43:15 | LL | fn test8(foo: Box>) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -57,7 +57,7 @@ LL | fn test8(foo: Box>) {} = help: `BTreeMap<..>` is already on the heap, `Box>` makes an extra allocation error: you seem to be trying to use `Box>`. Consider using just `BTreeSet<..>` - --> tests/ui/box_collection.rs:47:15 + --> tests/ui/box_collection.rs:46:15 | LL | fn test9(foo: Box>) {} | ^^^^^^^^^^^^^^^^^^ @@ -65,7 +65,7 @@ LL | fn test9(foo: Box>) {} = help: `BTreeSet<..>` is already on the heap, `Box>` makes an extra allocation error: you seem to be trying to use `Box>`. Consider using just `BinaryHeap<..>` - --> tests/ui/box_collection.rs:50:16 + --> tests/ui/box_collection.rs:49:16 | LL | fn test10(foo: Box>) {} | ^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/case_sensitive_file_extension_comparisons.fixed b/tests/ui/case_sensitive_file_extension_comparisons.fixed index bf7635fdf09bf..0c9d21243546d 100644 --- a/tests/ui/case_sensitive_file_extension_comparisons.fixed +++ b/tests/ui/case_sensitive_file_extension_comparisons.fixed @@ -1,5 +1,4 @@ #![warn(clippy::case_sensitive_file_extension_comparisons)] -#![allow(clippy::unnecessary_map_or)] use std::string::String; @@ -13,7 +12,7 @@ impl TestStruct { fn is_rust_file(filename: &str) -> bool { std::path::Path::new(filename) .extension() - .map_or(false, |ext| ext.eq_ignore_ascii_case("rs")) + .is_some_and(|ext| ext.eq_ignore_ascii_case("rs")) //~^ case_sensitive_file_extension_comparisons } @@ -21,18 +20,18 @@ fn main() { // std::string::String and &str should trigger the lint failure with .ext12 let _ = std::path::Path::new(&String::new()) .extension() - .map_or(false, |ext| ext.eq_ignore_ascii_case("ext12")); + .is_some_and(|ext| ext.eq_ignore_ascii_case("ext12")); //~^ case_sensitive_file_extension_comparisons let _ = std::path::Path::new("str") .extension() - .map_or(false, |ext| ext.eq_ignore_ascii_case("ext12")); + .is_some_and(|ext| ext.eq_ignore_ascii_case("ext12")); //~^ case_sensitive_file_extension_comparisons // The fixup should preserve the indentation level { let _ = std::path::Path::new("str") .extension() - .map_or(false, |ext| ext.eq_ignore_ascii_case("ext12")); + .is_some_and(|ext| ext.eq_ignore_ascii_case("ext12")); //~^ case_sensitive_file_extension_comparisons } @@ -42,11 +41,11 @@ fn main() { // std::string::String and &str should trigger the lint failure with .EXT12 let _ = std::path::Path::new(&String::new()) .extension() - .map_or(false, |ext| ext.eq_ignore_ascii_case("EXT12")); + .is_some_and(|ext| ext.eq_ignore_ascii_case("EXT12")); //~^ case_sensitive_file_extension_comparisons let _ = std::path::Path::new("str") .extension() - .map_or(false, |ext| ext.eq_ignore_ascii_case("EXT12")); + .is_some_and(|ext| ext.eq_ignore_ascii_case("EXT12")); //~^ case_sensitive_file_extension_comparisons // Should not trigger the lint failure because of the calls to to_lowercase and to_uppercase @@ -76,3 +75,11 @@ fn main() { let _ = "str".ends_with(".123"); TestStruct {}.ends_with(".123"); } + +#[clippy::msrv = "1.69"] +fn msrv_check() { + let _ = std::path::Path::new(&String::new()) + .extension() + .map_or(false, |ext| ext.eq_ignore_ascii_case("ext12")); + //~^ case_sensitive_file_extension_comparisons +} diff --git a/tests/ui/case_sensitive_file_extension_comparisons.rs b/tests/ui/case_sensitive_file_extension_comparisons.rs index 0c4070a42d4b0..f8a947aa827b9 100644 --- a/tests/ui/case_sensitive_file_extension_comparisons.rs +++ b/tests/ui/case_sensitive_file_extension_comparisons.rs @@ -1,5 +1,4 @@ #![warn(clippy::case_sensitive_file_extension_comparisons)] -#![allow(clippy::unnecessary_map_or)] use std::string::String; @@ -64,3 +63,9 @@ fn main() { let _ = "str".ends_with(".123"); TestStruct {}.ends_with(".123"); } + +#[clippy::msrv = "1.69"] +fn msrv_check() { + let _ = String::new().ends_with(".ext12"); + //~^ case_sensitive_file_extension_comparisons +} diff --git a/tests/ui/case_sensitive_file_extension_comparisons.stderr b/tests/ui/case_sensitive_file_extension_comparisons.stderr index e035534d26996..93bee8e766719 100644 --- a/tests/ui/case_sensitive_file_extension_comparisons.stderr +++ b/tests/ui/case_sensitive_file_extension_comparisons.stderr @@ -1,5 +1,5 @@ error: case-sensitive file extension comparison - --> tests/ui/case_sensitive_file_extension_comparisons.rs:14:5 + --> tests/ui/case_sensitive_file_extension_comparisons.rs:13:5 | LL | filename.ends_with(".rs") | ^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -11,11 +11,11 @@ help: use std::path::Path | LL ~ std::path::Path::new(filename) LL + .extension() -LL + .map_or(false, |ext| ext.eq_ignore_ascii_case("rs")) +LL + .is_some_and(|ext| ext.eq_ignore_ascii_case("rs")) | error: case-sensitive file extension comparison - --> tests/ui/case_sensitive_file_extension_comparisons.rs:20:13 + --> tests/ui/case_sensitive_file_extension_comparisons.rs:19:13 | LL | let _ = String::new().ends_with(".ext12"); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -25,11 +25,11 @@ help: use std::path::Path | LL ~ let _ = std::path::Path::new(&String::new()) LL + .extension() -LL ~ .map_or(false, |ext| ext.eq_ignore_ascii_case("ext12")); +LL ~ .is_some_and(|ext| ext.eq_ignore_ascii_case("ext12")); | error: case-sensitive file extension comparison - --> tests/ui/case_sensitive_file_extension_comparisons.rs:22:13 + --> tests/ui/case_sensitive_file_extension_comparisons.rs:21:13 | LL | let _ = "str".ends_with(".ext12"); | ^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -39,11 +39,11 @@ help: use std::path::Path | LL ~ let _ = std::path::Path::new("str") LL + .extension() -LL ~ .map_or(false, |ext| ext.eq_ignore_ascii_case("ext12")); +LL ~ .is_some_and(|ext| ext.eq_ignore_ascii_case("ext12")); | error: case-sensitive file extension comparison - --> tests/ui/case_sensitive_file_extension_comparisons.rs:27:17 + --> tests/ui/case_sensitive_file_extension_comparisons.rs:26:17 | LL | let _ = "str".ends_with(".ext12"); | ^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -53,11 +53,11 @@ help: use std::path::Path | LL ~ let _ = std::path::Path::new("str") LL + .extension() -LL ~ .map_or(false, |ext| ext.eq_ignore_ascii_case("ext12")); +LL ~ .is_some_and(|ext| ext.eq_ignore_ascii_case("ext12")); | error: case-sensitive file extension comparison - --> tests/ui/case_sensitive_file_extension_comparisons.rs:35:13 + --> tests/ui/case_sensitive_file_extension_comparisons.rs:34:13 | LL | let _ = String::new().ends_with(".EXT12"); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -67,11 +67,11 @@ help: use std::path::Path | LL ~ let _ = std::path::Path::new(&String::new()) LL + .extension() -LL ~ .map_or(false, |ext| ext.eq_ignore_ascii_case("EXT12")); +LL ~ .is_some_and(|ext| ext.eq_ignore_ascii_case("EXT12")); | error: case-sensitive file extension comparison - --> tests/ui/case_sensitive_file_extension_comparisons.rs:37:13 + --> tests/ui/case_sensitive_file_extension_comparisons.rs:36:13 | LL | let _ = "str".ends_with(".EXT12"); | ^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -81,8 +81,22 @@ help: use std::path::Path | LL ~ let _ = std::path::Path::new("str") LL + .extension() -LL ~ .map_or(false, |ext| ext.eq_ignore_ascii_case("EXT12")); +LL ~ .is_some_and(|ext| ext.eq_ignore_ascii_case("EXT12")); + | + +error: case-sensitive file extension comparison + --> tests/ui/case_sensitive_file_extension_comparisons.rs:69:13 + | +LL | let _ = String::new().ends_with(".ext12"); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: consider using a case-insensitive comparison instead +help: use std::path::Path + | +LL ~ let _ = std::path::Path::new(&String::new()) +LL + .extension() +LL ~ .map_or(false, |ext| ext.eq_ignore_ascii_case("ext12")); | -error: aborting due to 6 previous errors +error: aborting due to 7 previous errors diff --git a/tests/ui/char_indices_as_byte_indices.fixed b/tests/ui/char_indices_as_byte_indices.fixed new file mode 100644 index 0000000000000..04c8f6782c51e --- /dev/null +++ b/tests/ui/char_indices_as_byte_indices.fixed @@ -0,0 +1,65 @@ +#![feature(round_char_boundary)] +#![warn(clippy::char_indices_as_byte_indices)] + +trait StrExt { + fn use_index(&self, _: usize); +} +impl StrExt for str { + fn use_index(&self, _: usize) {} +} + +fn bad(prim: &str, string: String) { + for (idx, _) in prim.char_indices() { + let _ = prim[..idx]; + //~^ char_indices_as_byte_indices + prim.split_at(idx); + //~^ char_indices_as_byte_indices + + // This won't panic, but it can still return a wrong substring + let _ = prim[..prim.floor_char_boundary(idx)]; + //~^ char_indices_as_byte_indices + + // can't use #[expect] here because the .fixed file will still have the attribute and create an + // unfulfilled expectation, but make sure lint level attributes work on the use expression: + #[allow(clippy::char_indices_as_byte_indices)] + let _ = prim[..idx]; + } + + for c in prim.char_indices() { + let _ = prim[..c.0]; + //~^ char_indices_as_byte_indices + prim.split_at(c.0); + //~^ char_indices_as_byte_indices + } + + for (idx, _) in string.char_indices() { + let _ = string[..idx]; + //~^ char_indices_as_byte_indices + string.split_at(idx); + //~^ char_indices_as_byte_indices + } +} + +fn good(prim: &str, prim2: &str) { + for (idx, _) in prim.chars().enumerate() { + // Indexing into a different string + let _ = prim2[..idx]; + + // Unknown use + std::hint::black_box(idx); + + // Method call to user defined extension trait + prim.use_index(idx); + + // str method taking a usize that doesn't represent a byte index + prim.splitn(idx, prim2); + } + + let mut string = "äa".to_owned(); + for (idx, _) in string.clone().chars().enumerate() { + // Even though the receiver is the same expression, it should not be treated as the same value. + string.clone().remove(idx); + } +} + +fn main() {} diff --git a/tests/ui/char_indices_as_byte_indices.rs b/tests/ui/char_indices_as_byte_indices.rs new file mode 100644 index 0000000000000..773a4fc65f12f --- /dev/null +++ b/tests/ui/char_indices_as_byte_indices.rs @@ -0,0 +1,65 @@ +#![feature(round_char_boundary)] +#![warn(clippy::char_indices_as_byte_indices)] + +trait StrExt { + fn use_index(&self, _: usize); +} +impl StrExt for str { + fn use_index(&self, _: usize) {} +} + +fn bad(prim: &str, string: String) { + for (idx, _) in prim.chars().enumerate() { + let _ = prim[..idx]; + //~^ char_indices_as_byte_indices + prim.split_at(idx); + //~^ char_indices_as_byte_indices + + // This won't panic, but it can still return a wrong substring + let _ = prim[..prim.floor_char_boundary(idx)]; + //~^ char_indices_as_byte_indices + + // can't use #[expect] here because the .fixed file will still have the attribute and create an + // unfulfilled expectation, but make sure lint level attributes work on the use expression: + #[allow(clippy::char_indices_as_byte_indices)] + let _ = prim[..idx]; + } + + for c in prim.chars().enumerate() { + let _ = prim[..c.0]; + //~^ char_indices_as_byte_indices + prim.split_at(c.0); + //~^ char_indices_as_byte_indices + } + + for (idx, _) in string.chars().enumerate() { + let _ = string[..idx]; + //~^ char_indices_as_byte_indices + string.split_at(idx); + //~^ char_indices_as_byte_indices + } +} + +fn good(prim: &str, prim2: &str) { + for (idx, _) in prim.chars().enumerate() { + // Indexing into a different string + let _ = prim2[..idx]; + + // Unknown use + std::hint::black_box(idx); + + // Method call to user defined extension trait + prim.use_index(idx); + + // str method taking a usize that doesn't represent a byte index + prim.splitn(idx, prim2); + } + + let mut string = "äa".to_owned(); + for (idx, _) in string.clone().chars().enumerate() { + // Even though the receiver is the same expression, it should not be treated as the same value. + string.clone().remove(idx); + } +} + +fn main() {} diff --git a/tests/ui/char_indices_as_byte_indices.stderr b/tests/ui/char_indices_as_byte_indices.stderr new file mode 100644 index 0000000000000..e2b4c1db78cf4 --- /dev/null +++ b/tests/ui/char_indices_as_byte_indices.stderr @@ -0,0 +1,130 @@ +error: indexing into a string with a character position where a byte index is expected + --> tests/ui/char_indices_as_byte_indices.rs:13:24 + | +LL | let _ = prim[..idx]; + | ^^^ + | + = note: a character can take up more than one byte, so they are not interchangeable +note: position comes from the enumerate iterator + --> tests/ui/char_indices_as_byte_indices.rs:12:10 + | +LL | for (idx, _) in prim.chars().enumerate() { + | ^^^ ^^^^^^^^^^^ + = note: `-D clippy::char-indices-as-byte-indices` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::char_indices_as_byte_indices)]` +help: consider using `.char_indices()` instead + | +LL - for (idx, _) in prim.chars().enumerate() { +LL + for (idx, _) in prim.char_indices() { + | + +error: passing a character position to a method that expects a byte index + --> tests/ui/char_indices_as_byte_indices.rs:15:23 + | +LL | prim.split_at(idx); + | ^^^ + | + = note: a character can take up more than one byte, so they are not interchangeable +note: position comes from the enumerate iterator + --> tests/ui/char_indices_as_byte_indices.rs:12:10 + | +LL | for (idx, _) in prim.chars().enumerate() { + | ^^^ ^^^^^^^^^^^ +help: consider using `.char_indices()` instead + | +LL - for (idx, _) in prim.chars().enumerate() { +LL + for (idx, _) in prim.char_indices() { + | + +error: passing a character position to a method that expects a byte index + --> tests/ui/char_indices_as_byte_indices.rs:19:49 + | +LL | let _ = prim[..prim.floor_char_boundary(idx)]; + | ^^^ + | + = note: a character can take up more than one byte, so they are not interchangeable +note: position comes from the enumerate iterator + --> tests/ui/char_indices_as_byte_indices.rs:12:10 + | +LL | for (idx, _) in prim.chars().enumerate() { + | ^^^ ^^^^^^^^^^^ +help: consider using `.char_indices()` instead + | +LL - for (idx, _) in prim.chars().enumerate() { +LL + for (idx, _) in prim.char_indices() { + | + +error: indexing into a string with a character position where a byte index is expected + --> tests/ui/char_indices_as_byte_indices.rs:29:24 + | +LL | let _ = prim[..c.0]; + | ^^^ + | + = note: a character can take up more than one byte, so they are not interchangeable +note: position comes from the enumerate iterator + --> tests/ui/char_indices_as_byte_indices.rs:28:9 + | +LL | for c in prim.chars().enumerate() { + | ^ ^^^^^^^^^^^ +help: consider using `.char_indices()` instead + | +LL - for c in prim.chars().enumerate() { +LL + for c in prim.char_indices() { + | + +error: passing a character position to a method that expects a byte index + --> tests/ui/char_indices_as_byte_indices.rs:31:23 + | +LL | prim.split_at(c.0); + | ^^^ + | + = note: a character can take up more than one byte, so they are not interchangeable +note: position comes from the enumerate iterator + --> tests/ui/char_indices_as_byte_indices.rs:28:9 + | +LL | for c in prim.chars().enumerate() { + | ^ ^^^^^^^^^^^ +help: consider using `.char_indices()` instead + | +LL - for c in prim.chars().enumerate() { +LL + for c in prim.char_indices() { + | + +error: indexing into a string with a character position where a byte index is expected + --> tests/ui/char_indices_as_byte_indices.rs:36:26 + | +LL | let _ = string[..idx]; + | ^^^ + | + = note: a character can take up more than one byte, so they are not interchangeable +note: position comes from the enumerate iterator + --> tests/ui/char_indices_as_byte_indices.rs:35:10 + | +LL | for (idx, _) in string.chars().enumerate() { + | ^^^ ^^^^^^^^^^^ +help: consider using `.char_indices()` instead + | +LL - for (idx, _) in string.chars().enumerate() { +LL + for (idx, _) in string.char_indices() { + | + +error: passing a character position to a method that expects a byte index + --> tests/ui/char_indices_as_byte_indices.rs:38:25 + | +LL | string.split_at(idx); + | ^^^ + | + = note: a character can take up more than one byte, so they are not interchangeable +note: position comes from the enumerate iterator + --> tests/ui/char_indices_as_byte_indices.rs:35:10 + | +LL | for (idx, _) in string.chars().enumerate() { + | ^^^ ^^^^^^^^^^^ +help: consider using `.char_indices()` instead + | +LL - for (idx, _) in string.chars().enumerate() { +LL + for (idx, _) in string.char_indices() { + | + +error: aborting due to 7 previous errors + diff --git a/tests/ui/checked_unwrap/simple_conditionals.stderr b/tests/ui/checked_unwrap/simple_conditionals.stderr index c17eaef2326b3..bdac1e42309d8 100644 --- a/tests/ui/checked_unwrap/simple_conditionals.stderr +++ b/tests/ui/checked_unwrap/simple_conditionals.stderr @@ -244,8 +244,7 @@ LL | if X.is_some() { | = note: for more information, see = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives - = note: `-D static-mut-refs` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(static_mut_refs)]` + = note: `#[deny(static_mut_refs)]` on by default error: aborting due to 26 previous errors diff --git a/tests/ui/cmp_owned/with_suggestion.fixed b/tests/ui/cmp_owned/with_suggestion.fixed index eb01633a25fd5..85d0991bef05d 100644 --- a/tests/ui/cmp_owned/with_suggestion.fixed +++ b/tests/ui/cmp_owned/with_suggestion.fixed @@ -74,3 +74,12 @@ impl ToOwned for Baz { Baz } } + +fn issue_8103() { + let foo1 = String::from("foo"); + let _ = foo1 == "foo"; + //~^ cmp_owned + let foo2 = "foo"; + let _ = foo1 == foo2; + //~^ cmp_owned +} diff --git a/tests/ui/cmp_owned/with_suggestion.rs b/tests/ui/cmp_owned/with_suggestion.rs index 82409f27b129c..2393757d76f2b 100644 --- a/tests/ui/cmp_owned/with_suggestion.rs +++ b/tests/ui/cmp_owned/with_suggestion.rs @@ -74,3 +74,12 @@ impl ToOwned for Baz { Baz } } + +fn issue_8103() { + let foo1 = String::from("foo"); + let _ = foo1 == "foo".to_owned(); + //~^ cmp_owned + let foo2 = "foo"; + let _ = foo1 == foo2.to_owned(); + //~^ cmp_owned +} diff --git a/tests/ui/cmp_owned/with_suggestion.stderr b/tests/ui/cmp_owned/with_suggestion.stderr index ca2ab44847274..dd9ffa70897ab 100644 --- a/tests/ui/cmp_owned/with_suggestion.stderr +++ b/tests/ui/cmp_owned/with_suggestion.stderr @@ -37,5 +37,17 @@ error: this creates an owned instance just for comparison LL | "abc".chars().filter(|c| c.to_owned() != 'X'); | ^^^^^^^^^^^^ help: try: `*c` -error: aborting due to 6 previous errors +error: this creates an owned instance just for comparison + --> tests/ui/cmp_owned/with_suggestion.rs:80:21 + | +LL | let _ = foo1 == "foo".to_owned(); + | ^^^^^^^^^^^^^^^^ help: try: `"foo"` + +error: this creates an owned instance just for comparison + --> tests/ui/cmp_owned/with_suggestion.rs:83:21 + | +LL | let _ = foo1 == foo2.to_owned(); + | ^^^^^^^^^^^^^^^ help: try: `foo2` + +error: aborting due to 8 previous errors diff --git a/tests/ui/cognitive_complexity.rs b/tests/ui/cognitive_complexity.rs index 2dbec955f63fe..8080c6775e0be 100644 --- a/tests/ui/cognitive_complexity.rs +++ b/tests/ui/cognitive_complexity.rs @@ -1,6 +1,11 @@ -#![allow(clippy::all)] #![warn(clippy::cognitive_complexity)] -#![allow(unused, unused_crate_dependencies)] +#![allow( + clippy::eq_op, + clippy::needless_borrows_for_generic_args, + clippy::needless_return, + clippy::nonminimal_bool, + clippy::uninlined_format_args +)] #[rustfmt::skip] fn main() { @@ -448,3 +453,22 @@ mod issue9300 { } } } + +#[clippy::cognitive_complexity = "1"] +mod issue14422 { + fn foo() { + //~^ cognitive_complexity + for _ in 0..10 { + println!("hello there"); + } + } + + fn bar() { + //~^ cognitive_complexity + for _ in 0..10 { + println!("hello there"); + } + return; + return; + } +} diff --git a/tests/ui/cognitive_complexity.stderr b/tests/ui/cognitive_complexity.stderr index 52607b87c60ef..67ef4e5655bd6 100644 --- a/tests/ui/cognitive_complexity.stderr +++ b/tests/ui/cognitive_complexity.stderr @@ -1,5 +1,5 @@ error: the function has a cognitive complexity of (28/25) - --> tests/ui/cognitive_complexity.rs:6:4 + --> tests/ui/cognitive_complexity.rs:11:4 | LL | fn main() { | ^^^^ @@ -9,7 +9,7 @@ LL | fn main() { = help: to override `-D warnings` add `#[allow(clippy::cognitive_complexity)]` error: the function has a cognitive complexity of (7/1) - --> tests/ui/cognitive_complexity.rs:93:4 + --> tests/ui/cognitive_complexity.rs:98:4 | LL | fn kaboom() { | ^^^^^^ @@ -17,7 +17,7 @@ LL | fn kaboom() { = help: you could split it up into multiple smaller functions error: the function has a cognitive complexity of (2/1) - --> tests/ui/cognitive_complexity.rs:153:4 + --> tests/ui/cognitive_complexity.rs:158:4 | LL | fn baa() { | ^^^ @@ -25,7 +25,7 @@ LL | fn baa() { = help: you could split it up into multiple smaller functions error: the function has a cognitive complexity of (2/1) - --> tests/ui/cognitive_complexity.rs:156:13 + --> tests/ui/cognitive_complexity.rs:161:13 | LL | let x = || match 99 { | ^^ @@ -33,7 +33,7 @@ LL | let x = || match 99 { = help: you could split it up into multiple smaller functions error: the function has a cognitive complexity of (2/1) - --> tests/ui/cognitive_complexity.rs:174:4 + --> tests/ui/cognitive_complexity.rs:179:4 | LL | fn bar() { | ^^^ @@ -41,7 +41,7 @@ LL | fn bar() { = help: you could split it up into multiple smaller functions error: the function has a cognitive complexity of (2/1) - --> tests/ui/cognitive_complexity.rs:187:4 + --> tests/ui/cognitive_complexity.rs:192:4 | LL | fn dont_warn_on_tests() { | ^^^^^^^^^^^^^^^^^^ @@ -49,7 +49,7 @@ LL | fn dont_warn_on_tests() { = help: you could split it up into multiple smaller functions error: the function has a cognitive complexity of (2/1) - --> tests/ui/cognitive_complexity.rs:197:4 + --> tests/ui/cognitive_complexity.rs:202:4 | LL | fn barr() { | ^^^^ @@ -57,7 +57,7 @@ LL | fn barr() { = help: you could split it up into multiple smaller functions error: the function has a cognitive complexity of (3/1) - --> tests/ui/cognitive_complexity.rs:209:4 + --> tests/ui/cognitive_complexity.rs:214:4 | LL | fn barr2() { | ^^^^^ @@ -65,7 +65,7 @@ LL | fn barr2() { = help: you could split it up into multiple smaller functions error: the function has a cognitive complexity of (2/1) - --> tests/ui/cognitive_complexity.rs:227:4 + --> tests/ui/cognitive_complexity.rs:232:4 | LL | fn barrr() { | ^^^^^ @@ -73,7 +73,7 @@ LL | fn barrr() { = help: you could split it up into multiple smaller functions error: the function has a cognitive complexity of (3/1) - --> tests/ui/cognitive_complexity.rs:239:4 + --> tests/ui/cognitive_complexity.rs:244:4 | LL | fn barrr2() { | ^^^^^^ @@ -81,7 +81,7 @@ LL | fn barrr2() { = help: you could split it up into multiple smaller functions error: the function has a cognitive complexity of (2/1) - --> tests/ui/cognitive_complexity.rs:257:4 + --> tests/ui/cognitive_complexity.rs:262:4 | LL | fn barrrr() { | ^^^^^^ @@ -89,7 +89,7 @@ LL | fn barrrr() { = help: you could split it up into multiple smaller functions error: the function has a cognitive complexity of (3/1) - --> tests/ui/cognitive_complexity.rs:269:4 + --> tests/ui/cognitive_complexity.rs:274:4 | LL | fn barrrr2() { | ^^^^^^^ @@ -97,7 +97,7 @@ LL | fn barrrr2() { = help: you could split it up into multiple smaller functions error: the function has a cognitive complexity of (2/1) - --> tests/ui/cognitive_complexity.rs:287:4 + --> tests/ui/cognitive_complexity.rs:292:4 | LL | fn cake() { | ^^^^ @@ -105,7 +105,7 @@ LL | fn cake() { = help: you could split it up into multiple smaller functions error: the function has a cognitive complexity of (4/1) - --> tests/ui/cognitive_complexity.rs:299:8 + --> tests/ui/cognitive_complexity.rs:304:8 | LL | pub fn read_file(input_path: &str) -> String { | ^^^^^^^^^ @@ -113,7 +113,7 @@ LL | pub fn read_file(input_path: &str) -> String { = help: you could split it up into multiple smaller functions error: the function has a cognitive complexity of (2/1) - --> tests/ui/cognitive_complexity.rs:332:4 + --> tests/ui/cognitive_complexity.rs:337:4 | LL | fn void(void: Void) { | ^^^^ @@ -121,7 +121,7 @@ LL | fn void(void: Void) { = help: you could split it up into multiple smaller functions error: the function has a cognitive complexity of (8/1) - --> tests/ui/cognitive_complexity.rs:385:4 + --> tests/ui/cognitive_complexity.rs:390:4 | LL | fn early_ret() -> i32 { | ^^^^^^^^^ @@ -129,7 +129,7 @@ LL | fn early_ret() -> i32 { = help: you could split it up into multiple smaller functions error: the function has a cognitive complexity of (2/1) - --> tests/ui/cognitive_complexity.rs:408:13 + --> tests/ui/cognitive_complexity.rs:413:13 | LL | let x = |a: i32, b: i32| -> i32 { | ^^^^^^^^^^^^^^^^ @@ -137,7 +137,7 @@ LL | let x = |a: i32, b: i32| -> i32 { = help: you could split it up into multiple smaller functions error: the function has a cognitive complexity of (2/1) - --> tests/ui/cognitive_complexity.rs:423:8 + --> tests/ui/cognitive_complexity.rs:428:8 | LL | fn moo(&self) { | ^^^ @@ -145,7 +145,7 @@ LL | fn moo(&self) { = help: you could split it up into multiple smaller functions error: the function has a cognitive complexity of (2/1) - --> tests/ui/cognitive_complexity.rs:434:14 + --> tests/ui/cognitive_complexity.rs:439:14 | LL | async fn a() { | ^ @@ -153,12 +153,28 @@ LL | async fn a() { = help: you could split it up into multiple smaller functions error: the function has a cognitive complexity of (2/1) - --> tests/ui/cognitive_complexity.rs:443:22 + --> tests/ui/cognitive_complexity.rs:448:22 | LL | pub async fn async_method() { | ^^^^^^^^^^^^ | = help: you could split it up into multiple smaller functions -error: aborting due to 20 previous errors +error: the function has a cognitive complexity of (2/1) + --> tests/ui/cognitive_complexity.rs:459:8 + | +LL | fn foo() { + | ^^^ + | + = help: you could split it up into multiple smaller functions + +error: the function has a cognitive complexity of (2/1) + --> tests/ui/cognitive_complexity.rs:466:8 + | +LL | fn bar() { + | ^^^ + | + = help: you could split it up into multiple smaller functions + +error: aborting due to 22 previous errors diff --git a/tests/ui/collapsible_if.fixed b/tests/ui/collapsible_if.fixed index 6e994018aef01..e1ceb04f9cb89 100644 --- a/tests/ui/collapsible_if.fixed +++ b/tests/ui/collapsible_if.fixed @@ -12,34 +12,40 @@ fn main() { let x = "hello"; let y = "world"; - if x == "hello" && y == "world" { - println!("Hello world!"); - } + if x == "hello" + && y == "world" { + println!("Hello world!"); + } //~^^^^^ collapsible_if - if (x == "hello" || x == "world") && (y == "world" || y == "hello") { - println!("Hello world!"); - } + if (x == "hello" || x == "world") + && (y == "world" || y == "hello") { + println!("Hello world!"); + } //~^^^^^ collapsible_if - if x == "hello" && x == "world" && (y == "world" || y == "hello") { - println!("Hello world!"); - } + if x == "hello" && x == "world" + && (y == "world" || y == "hello") { + println!("Hello world!"); + } //~^^^^^ collapsible_if - if (x == "hello" || x == "world") && y == "world" && y == "hello" { - println!("Hello world!"); - } + if (x == "hello" || x == "world") + && y == "world" && y == "hello" { + println!("Hello world!"); + } //~^^^^^ collapsible_if - if x == "hello" && x == "world" && y == "world" && y == "hello" { - println!("Hello world!"); - } + if x == "hello" && x == "world" + && y == "world" && y == "hello" { + println!("Hello world!"); + } //~^^^^^ collapsible_if - if 42 == 1337 && 'a' != 'A' { - println!("world!") - } + if 42 == 1337 + && 'a' != 'A' { + println!("world!") + } //~^^^^^ collapsible_if // Works because any if with an else statement cannot be collapsed. @@ -71,37 +77,17 @@ fn main() { assert!(true); // assert! is just an `if` } - - // The following tests check for the fix of https://github.com/rust-lang/rust-clippy/issues/798 - if x == "hello" {// Not collapsible - if y == "world" { - println!("Hello world!"); - } - } - - if x == "hello" { // Not collapsible - if y == "world" { - println!("Hello world!"); - } - } - - if x == "hello" { - // Not collapsible - if y == "world" { + if x == "hello" + && y == "world" { // Collapsible println!("Hello world!"); } - } - - if x == "hello" && y == "world" { // Collapsible - println!("Hello world!"); - } //~^^^^^ collapsible_if if x == "hello" { print!("Hello "); } else { // Not collapsible - if y == "world" { + if let Some(42) = Some(42) { println!("world!") } } @@ -110,21 +96,8 @@ fn main() { print!("Hello "); } else { // Not collapsible - if let Some(42) = Some(42) { - println!("world!") - } - } - - if x == "hello" { - /* Not collapsible */ - if y == "world" { - println!("Hello world!"); - } - } - - if x == "hello" { /* Not collapsible */ if y == "world" { - println!("Hello world!"); + println!("world!") } } @@ -150,11 +123,13 @@ fn main() { } // Fix #5962 - if matches!(true, true) && matches!(true, true) {} + if matches!(true, true) + && matches!(true, true) {} //~^^^ collapsible_if // Issue #9375 - if matches!(true, true) && truth() && matches!(true, true) {} + if matches!(true, true) && truth() + && matches!(true, true) {} //~^^^ collapsible_if if true { @@ -163,4 +138,27 @@ fn main() { println!("Hello world!"); } } + + if true + && true { + println!("No comment, linted"); + } + //~^^^^^ collapsible_if + + if true { + // Do not collapse because of this comment + if true { + println!("Hello world!"); + } + } +} + +#[rustfmt::skip] +fn layout_check() -> u32 { + if true + && true { + } + // This is a comment, do not collapse code to it + ; 3 + //~^^^^^ collapsible_if } diff --git a/tests/ui/collapsible_if.rs b/tests/ui/collapsible_if.rs index 5cf591a658c7a..0b996dca22e85 100644 --- a/tests/ui/collapsible_if.rs +++ b/tests/ui/collapsible_if.rs @@ -83,27 +83,6 @@ fn main() { assert!(true); // assert! is just an `if` } - - // The following tests check for the fix of https://github.com/rust-lang/rust-clippy/issues/798 - if x == "hello" {// Not collapsible - if y == "world" { - println!("Hello world!"); - } - } - - if x == "hello" { // Not collapsible - if y == "world" { - println!("Hello world!"); - } - } - - if x == "hello" { - // Not collapsible - if y == "world" { - println!("Hello world!"); - } - } - if x == "hello" { if y == "world" { // Collapsible println!("Hello world!"); @@ -115,7 +94,7 @@ fn main() { print!("Hello "); } else { // Not collapsible - if y == "world" { + if let Some(42) = Some(42) { println!("world!") } } @@ -124,21 +103,8 @@ fn main() { print!("Hello "); } else { // Not collapsible - if let Some(42) = Some(42) { - println!("world!") - } - } - - if x == "hello" { - /* Not collapsible */ if y == "world" { - println!("Hello world!"); - } - } - - if x == "hello" { /* Not collapsible */ - if y == "world" { - println!("Hello world!"); + println!("world!") } } @@ -181,4 +147,28 @@ fn main() { println!("Hello world!"); } } + + if true { + if true { + println!("No comment, linted"); + } + } + //~^^^^^ collapsible_if + + if true { + // Do not collapse because of this comment + if true { + println!("Hello world!"); + } + } +} + +#[rustfmt::skip] +fn layout_check() -> u32 { + if true { + if true { + } + // This is a comment, do not collapse code to it + }; 3 + //~^^^^^ collapsible_if } diff --git a/tests/ui/collapsible_if.stderr b/tests/ui/collapsible_if.stderr index 3cc3fe5534f25..532811462393b 100644 --- a/tests/ui/collapsible_if.stderr +++ b/tests/ui/collapsible_if.stderr @@ -12,9 +12,10 @@ LL | | } = help: to override `-D warnings` add `#[allow(clippy::collapsible_if)]` help: collapse nested if block | -LL ~ if x == "hello" && y == "world" { -LL + println!("Hello world!"); -LL + } +LL ~ if x == "hello" +LL ~ && y == "world" { +LL | println!("Hello world!"); +LL ~ } | error: this `if` statement can be collapsed @@ -29,9 +30,10 @@ LL | | } | help: collapse nested if block | -LL ~ if (x == "hello" || x == "world") && (y == "world" || y == "hello") { -LL + println!("Hello world!"); -LL + } +LL ~ if (x == "hello" || x == "world") { +LL ~ && (y == "world" || y == "hello") { +LL | println!("Hello world!"); +LL ~ } | error: this `if` statement can be collapsed @@ -46,9 +48,10 @@ LL | | } | help: collapse nested if block | -LL ~ if x == "hello" && x == "world" && (y == "world" || y == "hello") { -LL + println!("Hello world!"); -LL + } +LL ~ if x == "hello" && x == "world" +LL ~ && (y == "world" || y == "hello") { +LL | println!("Hello world!"); +LL ~ } | error: this `if` statement can be collapsed @@ -63,9 +66,10 @@ LL | | } | help: collapse nested if block | -LL ~ if (x == "hello" || x == "world") && y == "world" && y == "hello" { -LL + println!("Hello world!"); -LL + } +LL ~ if (x == "hello" || x == "world") { +LL ~ && y == "world" && y == "hello" { +LL | println!("Hello world!"); +LL ~ } | error: this `if` statement can be collapsed @@ -80,9 +84,10 @@ LL | | } | help: collapse nested if block | -LL ~ if x == "hello" && x == "world" && y == "world" && y == "hello" { -LL + println!("Hello world!"); -LL + } +LL ~ if x == "hello" && x == "world" +LL ~ && y == "world" && y == "hello" { +LL | println!("Hello world!"); +LL ~ } | error: this `if` statement can be collapsed @@ -97,13 +102,14 @@ LL | | } | help: collapse nested if block | -LL ~ if 42 == 1337 && 'a' != 'A' { -LL + println!("world!") -LL + } +LL ~ if 42 == 1337 +LL ~ && 'a' != 'A' { +LL | println!("world!") +LL ~ } | error: this `if` statement can be collapsed - --> tests/ui/collapsible_if.rs:107:5 + --> tests/ui/collapsible_if.rs:86:5 | LL | / if x == "hello" { LL | | if y == "world" { // Collapsible @@ -114,26 +120,75 @@ LL | | } | help: collapse nested if block | -LL ~ if x == "hello" && y == "world" { // Collapsible -LL + println!("Hello world!"); -LL + } +LL ~ if x == "hello" +LL ~ && y == "world" { // Collapsible +LL | println!("Hello world!"); +LL ~ } | error: this `if` statement can be collapsed - --> tests/ui/collapsible_if.rs:167:5 + --> tests/ui/collapsible_if.rs:133:5 | LL | / if matches!(true, true) { LL | | if matches!(true, true) {} LL | | } - | |_____^ help: collapse nested if block: `if matches!(true, true) && matches!(true, true) {}` + | |_____^ + | +help: collapse nested if block + | +LL ~ if matches!(true, true) +LL ~ && matches!(true, true) {} + | error: this `if` statement can be collapsed - --> tests/ui/collapsible_if.rs:173:5 + --> tests/ui/collapsible_if.rs:139:5 | LL | / if matches!(true, true) && truth() { LL | | if matches!(true, true) {} LL | | } - | |_____^ help: collapse nested if block: `if matches!(true, true) && truth() && matches!(true, true) {}` + | |_____^ + | +help: collapse nested if block + | +LL ~ if matches!(true, true) && truth() +LL ~ && matches!(true, true) {} + | + +error: this `if` statement can be collapsed + --> tests/ui/collapsible_if.rs:151:5 + | +LL | / if true { +LL | | if true { +LL | | println!("No comment, linted"); +LL | | } +LL | | } + | |_____^ + | +help: collapse nested if block + | +LL ~ if true +LL ~ && true { +LL | println!("No comment, linted"); +LL ~ } + | + +error: this `if` statement can be collapsed + --> tests/ui/collapsible_if.rs:168:5 + | +LL | / if true { +LL | | if true { +... | +LL | | }; 3 + | |_____^ + | +help: collapse nested if block + | +LL ~ if true +LL ~ && true { +LL | } +LL | // This is a comment, do not collapse code to it +LL ~ ; 3 + | -error: aborting due to 9 previous errors +error: aborting due to 11 previous errors diff --git a/tests/ui/collapsible_if_let_chains.fixed b/tests/ui/collapsible_if_let_chains.fixed new file mode 100644 index 0000000000000..3dd9498a4c9f9 --- /dev/null +++ b/tests/ui/collapsible_if_let_chains.fixed @@ -0,0 +1,29 @@ +#![feature(let_chains)] +#![warn(clippy::collapsible_if)] + +fn main() { + if let Some(a) = Some(3) { + // with comment, so do not lint + if let Some(b) = Some(4) { + let _ = a + b; + } + } + + if let Some(a) = Some(3) + && let Some(b) = Some(4) { + let _ = a + b; + } + //~^^^^^ collapsible_if + + if let Some(a) = Some(3) + && a + 1 == 4 { + let _ = a; + } + //~^^^^^ collapsible_if + + if Some(3) == Some(4).map(|x| x - 1) + && let Some(b) = Some(4) { + let _ = b; + } + //~^^^^^ collapsible_if +} diff --git a/tests/ui/collapsible_if_let_chains.rs b/tests/ui/collapsible_if_let_chains.rs new file mode 100644 index 0000000000000..064b9a0be4847 --- /dev/null +++ b/tests/ui/collapsible_if_let_chains.rs @@ -0,0 +1,32 @@ +#![feature(let_chains)] +#![warn(clippy::collapsible_if)] + +fn main() { + if let Some(a) = Some(3) { + // with comment, so do not lint + if let Some(b) = Some(4) { + let _ = a + b; + } + } + + if let Some(a) = Some(3) { + if let Some(b) = Some(4) { + let _ = a + b; + } + } + //~^^^^^ collapsible_if + + if let Some(a) = Some(3) { + if a + 1 == 4 { + let _ = a; + } + } + //~^^^^^ collapsible_if + + if Some(3) == Some(4).map(|x| x - 1) { + if let Some(b) = Some(4) { + let _ = b; + } + } + //~^^^^^ collapsible_if +} diff --git a/tests/ui/collapsible_if_let_chains.stderr b/tests/ui/collapsible_if_let_chains.stderr new file mode 100644 index 0000000000000..64a88114c47a3 --- /dev/null +++ b/tests/ui/collapsible_if_let_chains.stderr @@ -0,0 +1,58 @@ +error: this `if` statement can be collapsed + --> tests/ui/collapsible_if_let_chains.rs:12:5 + | +LL | / if let Some(a) = Some(3) { +LL | | if let Some(b) = Some(4) { +LL | | let _ = a + b; +LL | | } +LL | | } + | |_____^ + | + = note: `-D clippy::collapsible-if` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::collapsible_if)]` +help: collapse nested if block + | +LL ~ if let Some(a) = Some(3) +LL ~ && let Some(b) = Some(4) { +LL | let _ = a + b; +LL ~ } + | + +error: this `if` statement can be collapsed + --> tests/ui/collapsible_if_let_chains.rs:19:5 + | +LL | / if let Some(a) = Some(3) { +LL | | if a + 1 == 4 { +LL | | let _ = a; +LL | | } +LL | | } + | |_____^ + | +help: collapse nested if block + | +LL ~ if let Some(a) = Some(3) +LL ~ && a + 1 == 4 { +LL | let _ = a; +LL ~ } + | + +error: this `if` statement can be collapsed + --> tests/ui/collapsible_if_let_chains.rs:26:5 + | +LL | / if Some(3) == Some(4).map(|x| x - 1) { +LL | | if let Some(b) = Some(4) { +LL | | let _ = b; +LL | | } +LL | | } + | |_____^ + | +help: collapse nested if block + | +LL ~ if Some(3) == Some(4).map(|x| x - 1) +LL ~ && let Some(b) = Some(4) { +LL | let _ = b; +LL ~ } + | + +error: aborting due to 3 previous errors + diff --git a/tests/ui/collapsible_match.rs b/tests/ui/collapsible_match.rs index 796cabd4b669a..55ef55844957a 100644 --- a/tests/ui/collapsible_match.rs +++ b/tests/ui/collapsible_match.rs @@ -303,6 +303,18 @@ pub fn test_2(x: Issue9647) { } } +// https://github.com/rust-lang/rust-clippy/issues/14281 +fn lint_emitted_at_right_node(opt: Option>) { + let n = match opt { + #[expect(clippy::collapsible_match)] + Some(n) => match n { + Ok(n) => n, + _ => return, + }, + None => return, + }; +} + fn make() -> T { unimplemented!() } diff --git a/tests/ui/crashes/enum-glob-import-crate.rs b/tests/ui/crashes/enum-glob-import-crate.rs index bbcd599f6d0b8..3352e822ef848 100644 --- a/tests/ui/crashes/enum-glob-import-crate.rs +++ b/tests/ui/crashes/enum-glob-import-crate.rs @@ -1,8 +1,5 @@ //@ check-pass -#![deny(clippy::all)] -#![allow(unused_imports)] - use std::*; fn main() {} diff --git a/tests/ui/crashes/ice-11230.fixed b/tests/ui/crashes/ice-11230.fixed index 181e1ebbe5a3a..c49a419f0d4ba 100644 --- a/tests/ui/crashes/ice-11230.fixed +++ b/tests/ui/crashes/ice-11230.fixed @@ -12,7 +12,7 @@ fn main() { // needless_collect trait Helper<'a>: Iterator {} +// Should not be linted because we have no idea whether the iterator has side effects fn x(w: &mut dyn for<'a> Helper<'a>) { - w.next().is_none(); - //~^ needless_collect + w.collect::>().is_empty(); } diff --git a/tests/ui/crashes/ice-11230.rs b/tests/ui/crashes/ice-11230.rs index fb05dc781bc0d..f66b7e961c889 100644 --- a/tests/ui/crashes/ice-11230.rs +++ b/tests/ui/crashes/ice-11230.rs @@ -12,7 +12,7 @@ fn main() { // needless_collect trait Helper<'a>: Iterator {} +// Should not be linted because we have no idea whether the iterator has side effects fn x(w: &mut dyn for<'a> Helper<'a>) { w.collect::>().is_empty(); - //~^ needless_collect } diff --git a/tests/ui/crashes/ice-11230.stderr b/tests/ui/crashes/ice-11230.stderr index b4a3f67081aec..91d59121ac4ed 100644 --- a/tests/ui/crashes/ice-11230.stderr +++ b/tests/ui/crashes/ice-11230.stderr @@ -7,14 +7,5 @@ LL | for v in A.iter() {} = note: `-D clippy::explicit-iter-loop` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::explicit_iter_loop)]` -error: avoid using `collect()` when not needed - --> tests/ui/crashes/ice-11230.rs:16:7 - | -LL | w.collect::>().is_empty(); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `next().is_none()` - | - = note: `-D clippy::needless-collect` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::needless_collect)]` - -error: aborting due to 2 previous errors +error: aborting due to 1 previous error diff --git a/tests/ui/crashes/ice-13544-original.rs b/tests/ui/crashes/ice-13544-original.rs new file mode 100644 index 0000000000000..1709eaeb365e8 --- /dev/null +++ b/tests/ui/crashes/ice-13544-original.rs @@ -0,0 +1,45 @@ +//@ check-pass +#![warn(clippy::significant_drop_tightening)] + +use std::mem::ManuallyDrop; +use std::ops::{Deref, DerefMut}; + +trait Scopable: Sized { + type SubType: Scopable; +} + +struct Subtree(ManuallyDrop>>); + +impl Drop for Subtree { + fn drop(&mut self) { + // SAFETY: The field cannot be used after we drop + unsafe { ManuallyDrop::drop(&mut self.0) } + } +} + +impl Deref for Subtree { + type Target = Tree; + fn deref(&self) -> &Self::Target { + &self.0 + } +} + +impl DerefMut for Subtree { + fn deref_mut(&mut self) -> &mut Self::Target { + &mut self.0 + } +} + +enum Tree { + Group(Vec>), + Subtree(Subtree), + Leaf(T), +} + +impl Tree { + fn foo(self) -> Self { + self + } +} + +fn main() {} diff --git a/tests/ui/crashes/ice-13544-reduced.rs b/tests/ui/crashes/ice-13544-reduced.rs new file mode 100644 index 0000000000000..9266e71f5d0e0 --- /dev/null +++ b/tests/ui/crashes/ice-13544-reduced.rs @@ -0,0 +1,16 @@ +//@ check-pass +#![warn(clippy::significant_drop_tightening)] +#![allow(unused, clippy::no_effect)] + +use std::marker::PhantomData; + +trait Trait { + type Assoc: Trait; +} +struct S(*const S, PhantomData); + +fn f(x: &mut S) { + &mut x.0; +} + +fn main() {} diff --git a/tests/ui/crashes/ice-1588.rs b/tests/ui/crashes/ice-1588.rs index 3ccd33052cd6c..422c29b66cf68 100644 --- a/tests/ui/crashes/ice-1588.rs +++ b/tests/ui/crashes/ice-1588.rs @@ -1,6 +1,6 @@ //@ check-pass -#![allow(clippy::all)] +#![expect(clippy::no_effect)] // Test for https://github.com/rust-lang/rust-clippy/issues/1588 diff --git a/tests/ui/crashes/ice-1969.rs b/tests/ui/crashes/ice-1969.rs index 34ff725d71176..813972a046f75 100644 --- a/tests/ui/crashes/ice-1969.rs +++ b/tests/ui/crashes/ice-1969.rs @@ -1,7 +1,5 @@ //@ check-pass -#![allow(clippy::all)] - // Test for https://github.com/rust-lang/rust-clippy/issues/1969 fn main() {} diff --git a/tests/ui/crashes/ice-3462.rs b/tests/ui/crashes/ice-3462.rs index 4ce484917ae2f..e06eccdf142ca 100644 --- a/tests/ui/crashes/ice-3462.rs +++ b/tests/ui/crashes/ice-3462.rs @@ -1,8 +1,6 @@ //@ check-pass -#![warn(clippy::all)] -#![allow(clippy::disallowed_names, clippy::equatable_if_let, clippy::needless_if)] -#![allow(unused)] +#![expect(clippy::disallowed_names)] // Test for https://github.com/rust-lang/rust-clippy/issues/3462 diff --git a/tests/ui/crashes/ice-700.rs b/tests/ui/crashes/ice-700.rs index aa3bf493c201c..ca82f638b0bba 100644 --- a/tests/ui/crashes/ice-700.rs +++ b/tests/ui/crashes/ice-700.rs @@ -1,7 +1,5 @@ //@ check-pass -#![deny(clippy::all)] - // Test for https://github.com/rust-lang/rust-clippy/issues/700 fn core() {} diff --git a/tests/ui/crashes/ice-7012.rs b/tests/ui/crashes/ice-7012.rs index d76995adadf1a..48c1c5a98d40a 100644 --- a/tests/ui/crashes/ice-7012.rs +++ b/tests/ui/crashes/ice-7012.rs @@ -1,6 +1,6 @@ //@ check-pass -#![allow(clippy::all)] +#![expect(clippy::single_match)] enum _MyOption { None, diff --git a/tests/ui/crashes/ice-7423.rs b/tests/ui/crashes/ice-7423.rs index a03981842fcc4..fbf5d6520ed64 100644 --- a/tests/ui/crashes/ice-7423.rs +++ b/tests/ui/crashes/ice-7423.rs @@ -6,7 +6,7 @@ pub trait Trait { impl Trait for usize { fn f() { - extern "C" { + unsafe extern "C" { fn g() -> usize; } } diff --git a/tests/ui/crashes/ice_exact_size.rs b/tests/ui/crashes/ice_exact_size.rs index cb4685e78e22f..0aa55cd0fac61 100644 --- a/tests/ui/crashes/ice_exact_size.rs +++ b/tests/ui/crashes/ice_exact_size.rs @@ -1,10 +1,7 @@ //@ check-pass -#![deny(clippy::all)] - // Test for https://github.com/rust-lang/rust-clippy/issues/1336 -#[allow(dead_code)] struct Foo; impl Iterator for Foo { diff --git a/tests/ui/crashes/needless_borrow_fp.rs b/tests/ui/crashes/needless_borrow_fp.rs index 68e39531682a0..1b3b0290d909e 100644 --- a/tests/ui/crashes/needless_borrow_fp.rs +++ b/tests/ui/crashes/needless_borrow_fp.rs @@ -1,6 +1,5 @@ //@ check-pass -#[deny(clippy::all)] #[derive(Debug)] pub enum Error { Type(&'static str), diff --git a/tests/ui/crate_level_checks/no_std_swap.fixed b/tests/ui/crate_level_checks/no_std_swap.fixed index e09a913ef06cd..9d977e9eddc84 100644 --- a/tests/ui/crate_level_checks/no_std_swap.fixed +++ b/tests/ui/crate_level_checks/no_std_swap.fixed @@ -3,7 +3,6 @@ use core::panic::PanicInfo; -#[warn(clippy::all)] pub fn main() { let mut a = 42; let mut b = 1337; diff --git a/tests/ui/crate_level_checks/no_std_swap.rs b/tests/ui/crate_level_checks/no_std_swap.rs index 66ca97690c175..0967efe2ed8dc 100644 --- a/tests/ui/crate_level_checks/no_std_swap.rs +++ b/tests/ui/crate_level_checks/no_std_swap.rs @@ -3,7 +3,6 @@ use core::panic::PanicInfo; -#[warn(clippy::all)] pub fn main() { let mut a = 42; let mut b = 1337; diff --git a/tests/ui/crate_level_checks/no_std_swap.stderr b/tests/ui/crate_level_checks/no_std_swap.stderr index 3e37bd95ef340..e16b53b51a810 100644 --- a/tests/ui/crate_level_checks/no_std_swap.stderr +++ b/tests/ui/crate_level_checks/no_std_swap.stderr @@ -1,5 +1,5 @@ error: this looks like you are trying to swap `a` and `b` - --> tests/ui/crate_level_checks/no_std_swap.rs:11:5 + --> tests/ui/crate_level_checks/no_std_swap.rs:10:5 | LL | / a = b; ... | @@ -7,8 +7,7 @@ LL | | b = a; | |_________^ help: try: `core::mem::swap(&mut a, &mut b)` | = note: or maybe you should use `core::mem::replace`? - = note: `-D clippy::almost-swapped` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::almost_swapped)]` + = note: `#[deny(clippy::almost_swapped)]` on by default error: aborting due to 1 previous error diff --git a/tests/ui/dbg_macro/dbg_macro.fixed b/tests/ui/dbg_macro/dbg_macro.fixed index fd1a0d8934b3c..3b9dee81898ab 100644 --- a/tests/ui/dbg_macro/dbg_macro.fixed +++ b/tests/ui/dbg_macro/dbg_macro.fixed @@ -1,5 +1,10 @@ +#![allow( + clippy::no_effect, + clippy::uninlined_format_args, + clippy::unit_arg, + clippy::unnecessary_operation +)] #![warn(clippy::dbg_macro)] -#![allow(clippy::unnecessary_operation, clippy::no_effect, clippy::unit_arg)] fn foo(n: u32) -> u32 { if let Some(n) = n.checked_sub(4) { n } else { n } diff --git a/tests/ui/dbg_macro/dbg_macro.rs b/tests/ui/dbg_macro/dbg_macro.rs index c96e2c7251c29..1dbbc6fe98456 100644 --- a/tests/ui/dbg_macro/dbg_macro.rs +++ b/tests/ui/dbg_macro/dbg_macro.rs @@ -1,5 +1,10 @@ +#![allow( + clippy::no_effect, + clippy::uninlined_format_args, + clippy::unit_arg, + clippy::unnecessary_operation +)] #![warn(clippy::dbg_macro)] -#![allow(clippy::unnecessary_operation, clippy::no_effect, clippy::unit_arg)] fn foo(n: u32) -> u32 { if let Some(n) = dbg!(n.checked_sub(4)) { n } else { n } diff --git a/tests/ui/dbg_macro/dbg_macro.stderr b/tests/ui/dbg_macro/dbg_macro.stderr index cd6dce584a2fa..f1412023cc897 100644 --- a/tests/ui/dbg_macro/dbg_macro.stderr +++ b/tests/ui/dbg_macro/dbg_macro.stderr @@ -1,5 +1,5 @@ error: the `dbg!` macro is intended as a debugging tool - --> tests/ui/dbg_macro/dbg_macro.rs:5:22 + --> tests/ui/dbg_macro/dbg_macro.rs:10:22 | LL | if let Some(n) = dbg!(n.checked_sub(4)) { n } else { n } | ^^^^^^^^^^^^^^^^^^^^^^ @@ -13,7 +13,7 @@ LL + if let Some(n) = n.checked_sub(4) { n } else { n } | error: the `dbg!` macro is intended as a debugging tool - --> tests/ui/dbg_macro/dbg_macro.rs:11:8 + --> tests/ui/dbg_macro/dbg_macro.rs:16:8 | LL | if dbg!(n <= 1) { | ^^^^^^^^^^^^ @@ -25,7 +25,7 @@ LL + if n <= 1 { | error: the `dbg!` macro is intended as a debugging tool - --> tests/ui/dbg_macro/dbg_macro.rs:14:9 + --> tests/ui/dbg_macro/dbg_macro.rs:19:9 | LL | dbg!(1) | ^^^^^^^ @@ -37,7 +37,7 @@ LL + 1 | error: the `dbg!` macro is intended as a debugging tool - --> tests/ui/dbg_macro/dbg_macro.rs:17:9 + --> tests/ui/dbg_macro/dbg_macro.rs:22:9 | LL | dbg!(n * factorial(n - 1)) | ^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -49,7 +49,7 @@ LL + n * factorial(n - 1) | error: the `dbg!` macro is intended as a debugging tool - --> tests/ui/dbg_macro/dbg_macro.rs:23:5 + --> tests/ui/dbg_macro/dbg_macro.rs:28:5 | LL | dbg!(42); | ^^^^^^^^ @@ -61,7 +61,7 @@ LL + 42; | error: the `dbg!` macro is intended as a debugging tool - --> tests/ui/dbg_macro/dbg_macro.rs:26:14 + --> tests/ui/dbg_macro/dbg_macro.rs:31:14 | LL | foo(3) + dbg!(factorial(4)); | ^^^^^^^^^^^^^^^^^^ @@ -73,7 +73,7 @@ LL + foo(3) + factorial(4); | error: the `dbg!` macro is intended as a debugging tool - --> tests/ui/dbg_macro/dbg_macro.rs:29:5 + --> tests/ui/dbg_macro/dbg_macro.rs:34:5 | LL | dbg!(1, 2, 3, 4, 5); | ^^^^^^^^^^^^^^^^^^^ @@ -85,7 +85,7 @@ LL + (1, 2, 3, 4, 5); | error: the `dbg!` macro is intended as a debugging tool - --> tests/ui/dbg_macro/dbg_macro.rs:51:5 + --> tests/ui/dbg_macro/dbg_macro.rs:56:5 | LL | dbg!(); | ^^^^^^ @@ -96,7 +96,7 @@ LL - dbg!(); | error: the `dbg!` macro is intended as a debugging tool - --> tests/ui/dbg_macro/dbg_macro.rs:55:13 + --> tests/ui/dbg_macro/dbg_macro.rs:60:13 | LL | let _ = dbg!(); | ^^^^^^ @@ -108,7 +108,7 @@ LL + let _ = (); | error: the `dbg!` macro is intended as a debugging tool - --> tests/ui/dbg_macro/dbg_macro.rs:58:9 + --> tests/ui/dbg_macro/dbg_macro.rs:63:9 | LL | bar(dbg!()); | ^^^^^^ @@ -120,7 +120,7 @@ LL + bar(()); | error: the `dbg!` macro is intended as a debugging tool - --> tests/ui/dbg_macro/dbg_macro.rs:61:10 + --> tests/ui/dbg_macro/dbg_macro.rs:66:10 | LL | foo!(dbg!()); | ^^^^^^ @@ -132,7 +132,7 @@ LL + foo!(()); | error: the `dbg!` macro is intended as a debugging tool - --> tests/ui/dbg_macro/dbg_macro.rs:64:16 + --> tests/ui/dbg_macro/dbg_macro.rs:69:16 | LL | foo2!(foo!(dbg!())); | ^^^^^^ @@ -144,7 +144,7 @@ LL + foo2!(foo!(())); | error: the `dbg!` macro is intended as a debugging tool - --> tests/ui/dbg_macro/dbg_macro.rs:46:13 + --> tests/ui/dbg_macro/dbg_macro.rs:51:13 | LL | dbg!(); | ^^^^^^ @@ -159,7 +159,7 @@ LL - dbg!(); | error: the `dbg!` macro is intended as a debugging tool - --> tests/ui/dbg_macro/dbg_macro.rs:87:9 + --> tests/ui/dbg_macro/dbg_macro.rs:92:9 | LL | dbg!(2); | ^^^^^^^ @@ -171,7 +171,7 @@ LL + 2; | error: the `dbg!` macro is intended as a debugging tool - --> tests/ui/dbg_macro/dbg_macro.rs:94:5 + --> tests/ui/dbg_macro/dbg_macro.rs:99:5 | LL | dbg!(1); | ^^^^^^^ @@ -183,7 +183,7 @@ LL + 1; | error: the `dbg!` macro is intended as a debugging tool - --> tests/ui/dbg_macro/dbg_macro.rs:100:5 + --> tests/ui/dbg_macro/dbg_macro.rs:105:5 | LL | dbg!(1); | ^^^^^^^ @@ -195,7 +195,7 @@ LL + 1; | error: the `dbg!` macro is intended as a debugging tool - --> tests/ui/dbg_macro/dbg_macro.rs:107:9 + --> tests/ui/dbg_macro/dbg_macro.rs:112:9 | LL | dbg!(1); | ^^^^^^^ @@ -207,7 +207,7 @@ LL + 1; | error: the `dbg!` macro is intended as a debugging tool - --> tests/ui/dbg_macro/dbg_macro.rs:114:31 + --> tests/ui/dbg_macro/dbg_macro.rs:119:31 | LL | println!("dbg: {:?}", dbg!(s)); | ^^^^^^^ @@ -219,7 +219,7 @@ LL + println!("dbg: {:?}", s); | error: the `dbg!` macro is intended as a debugging tool - --> tests/ui/dbg_macro/dbg_macro.rs:117:22 + --> tests/ui/dbg_macro/dbg_macro.rs:122:22 | LL | print!("{}", dbg!(s)); | ^^^^^^^ diff --git a/tests/ui/def_id_nocore.rs b/tests/ui/def_id_nocore.rs index 03f5ca31f5f07..40f40f7ea0960 100644 --- a/tests/ui/def_id_nocore.rs +++ b/tests/ui/def_id_nocore.rs @@ -5,7 +5,7 @@ #![allow(clippy::missing_safety_doc)] #[link(name = "c")] -extern "C" {} +unsafe extern "C" {} #[lang = "sized"] pub trait Sized {} diff --git a/tests/ui/default_constructed_unit_structs.fixed b/tests/ui/default_constructed_unit_structs.fixed index fa4d55177823e..1ca9be0ceddc7 100644 --- a/tests/ui/default_constructed_unit_structs.fixed +++ b/tests/ui/default_constructed_unit_structs.fixed @@ -161,3 +161,17 @@ fn main() { let _ = ::default(); } + +fn issue12654() { + #[derive(Default)] + struct G; + + fn f(_g: G) {} + + f(<_>::default()); + f(G); + //~^ default_constructed_unit_structs + + // No lint because `as Default` hides the singleton + f(::default()); +} diff --git a/tests/ui/default_constructed_unit_structs.rs b/tests/ui/default_constructed_unit_structs.rs index 291cd89da0b79..99eb8913fc3ce 100644 --- a/tests/ui/default_constructed_unit_structs.rs +++ b/tests/ui/default_constructed_unit_structs.rs @@ -161,3 +161,17 @@ fn main() { let _ = ::default(); } + +fn issue12654() { + #[derive(Default)] + struct G; + + fn f(_g: G) {} + + f(<_>::default()); + f(::default()); + //~^ default_constructed_unit_structs + + // No lint because `as Default` hides the singleton + f(::default()); +} diff --git a/tests/ui/default_constructed_unit_structs.stderr b/tests/ui/default_constructed_unit_structs.stderr index 6d4e1bdc2cc81..97fad792e4f7a 100644 --- a/tests/ui/default_constructed_unit_structs.stderr +++ b/tests/ui/default_constructed_unit_structs.stderr @@ -1,41 +1,65 @@ error: use of `default` to create a unit struct - --> tests/ui/default_constructed_unit_structs.rs:11:13 + --> tests/ui/default_constructed_unit_structs.rs:11:9 | LL | Self::default() - | ^^^^^^^^^^^ help: remove this call to `default` + | ^^^^----------- + | | + | help: remove this call to `default` | = note: `-D clippy::default-constructed-unit-structs` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::default_constructed_unit_structs)]` error: use of `default` to create a unit struct - --> tests/ui/default_constructed_unit_structs.rs:54:31 + --> tests/ui/default_constructed_unit_structs.rs:54:20 | LL | inner: PhantomData::default(), - | ^^^^^^^^^^^ help: remove this call to `default` + | ^^^^^^^^^^^----------- + | | + | help: remove this call to `default` error: use of `default` to create a unit struct - --> tests/ui/default_constructed_unit_structs.rs:128:33 + --> tests/ui/default_constructed_unit_structs.rs:128:13 | LL | let _ = PhantomData::::default(); - | ^^^^^^^^^^^ help: remove this call to `default` + | ^^^^^^^^^^^^^^^^^^^^----------- + | | + | help: remove this call to `default` error: use of `default` to create a unit struct - --> tests/ui/default_constructed_unit_structs.rs:130:42 + --> tests/ui/default_constructed_unit_structs.rs:130:31 | LL | let _: PhantomData = PhantomData::default(); - | ^^^^^^^^^^^ help: remove this call to `default` + | ^^^^^^^^^^^----------- + | | + | help: remove this call to `default` error: use of `default` to create a unit struct - --> tests/ui/default_constructed_unit_structs.rs:132:55 + --> tests/ui/default_constructed_unit_structs.rs:132:31 | LL | let _: PhantomData = std::marker::PhantomData::default(); - | ^^^^^^^^^^^ help: remove this call to `default` + | ^^^^^^^^^^^^^^^^^^^^^^^^----------- + | | + | help: remove this call to `default` error: use of `default` to create a unit struct - --> tests/ui/default_constructed_unit_structs.rs:134:23 + --> tests/ui/default_constructed_unit_structs.rs:134:13 | LL | let _ = UnitStruct::default(); - | ^^^^^^^^^^^ help: remove this call to `default` + | ^^^^^^^^^^----------- + | | + | help: remove this call to `default` -error: aborting due to 6 previous errors +error: use of `default` to create a unit struct + --> tests/ui/default_constructed_unit_structs.rs:172:7 + | +LL | f(::default()); + | ^^^^^^^^^^^^^^ + | +help: remove this call to `default` + | +LL - f(::default()); +LL + f(G); + | + +error: aborting due to 7 previous errors diff --git a/tests/ui/deprecated.rs b/tests/ui/deprecated.rs index 35646e1c23919..2787f6406fe39 100644 --- a/tests/ui/deprecated.rs +++ b/tests/ui/deprecated.rs @@ -16,5 +16,6 @@ #![warn(clippy::pub_enum_variant_names)] //~ ERROR: lint `clippy::pub_enum_variant_names` #![warn(clippy::wrong_pub_self_convention)] //~ ERROR: lint `clippy::wrong_pub_self_convention` #![warn(clippy::option_map_or_err_ok)] //~ ERROR: lint `clippy::option_map_or_err_ok` +#![warn(clippy::match_on_vec_items)] //~ ERROR: lint `clippy::match_on_vec_items` fn main() {} diff --git a/tests/ui/deprecated.stderr b/tests/ui/deprecated.stderr index d7be1e583b08b..604732405c370 100644 --- a/tests/ui/deprecated.stderr +++ b/tests/ui/deprecated.stderr @@ -85,5 +85,11 @@ error: lint `clippy::option_map_or_err_ok` has been removed: `clippy::manual_ok_ LL | #![warn(clippy::option_map_or_err_ok)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -error: aborting due to 14 previous errors +error: lint `clippy::match_on_vec_items` has been removed: `clippy::indexing_slicing` covers indexing and slicing on `Vec<_>` + --> tests/ui/deprecated.rs:19:9 + | +LL | #![warn(clippy::match_on_vec_items)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: aborting due to 15 previous errors diff --git a/tests/ui/derive.rs b/tests/ui/derive.rs index 707a9ff058576..e334203c7b2a7 100644 --- a/tests/ui/derive.rs +++ b/tests/ui/derive.rs @@ -6,6 +6,8 @@ dead_code )] #![warn(clippy::expl_impl_clone_on_copy)] +#![expect(incomplete_features)] // `unsafe_fields` is incomplete for the time being +#![feature(unsafe_fields)] // `clone()` cannot be derived automatically on unsafe fields #[derive(Copy)] @@ -113,4 +115,19 @@ impl Clone for Packed { } } +fn issue14558() { + pub struct Valid { + pub unsafe actual: (), + } + + unsafe impl Copy for Valid {} + + impl Clone for Valid { + #[inline] + fn clone(&self) -> Self { + *self + } + } +} + fn main() {} diff --git a/tests/ui/derive.stderr b/tests/ui/derive.stderr index 20278d4f4e4a4..9004ced6849e5 100644 --- a/tests/ui/derive.stderr +++ b/tests/ui/derive.stderr @@ -1,5 +1,5 @@ error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:14:1 + --> tests/ui/derive.rs:16:1 | LL | / impl Clone for Qux { LL | | @@ -10,7 +10,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:14:1 + --> tests/ui/derive.rs:16:1 | LL | / impl Clone for Qux { LL | | @@ -23,7 +23,7 @@ LL | | } = help: to override `-D warnings` add `#[allow(clippy::expl_impl_clone_on_copy)]` error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:40:1 + --> tests/ui/derive.rs:42:1 | LL | / impl<'a> Clone for Lt<'a> { LL | | @@ -34,7 +34,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:40:1 + --> tests/ui/derive.rs:42:1 | LL | / impl<'a> Clone for Lt<'a> { LL | | @@ -45,7 +45,7 @@ LL | | } | |_^ error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:53:1 + --> tests/ui/derive.rs:55:1 | LL | / impl Clone for BigArray { LL | | @@ -56,7 +56,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:53:1 + --> tests/ui/derive.rs:55:1 | LL | / impl Clone for BigArray { LL | | @@ -67,7 +67,7 @@ LL | | } | |_^ error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:66:1 + --> tests/ui/derive.rs:68:1 | LL | / impl Clone for FnPtr { LL | | @@ -78,7 +78,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:66:1 + --> tests/ui/derive.rs:68:1 | LL | / impl Clone for FnPtr { LL | | @@ -89,7 +89,7 @@ LL | | } | |_^ error: you are implementing `Clone` explicitly on a `Copy` type - --> tests/ui/derive.rs:88:1 + --> tests/ui/derive.rs:90:1 | LL | / impl Clone for Generic2 { LL | | @@ -100,7 +100,7 @@ LL | | } | |_^ | note: consider deriving `Clone` or removing `Copy` - --> tests/ui/derive.rs:88:1 + --> tests/ui/derive.rs:90:1 | LL | / impl Clone for Generic2 { LL | | diff --git a/tests/ui/doc/doc-fixable.fixed b/tests/ui/doc/doc-fixable.fixed index 5f2b697f88b02..8cf20d8b1a11c 100644 --- a/tests/ui/doc/doc-fixable.fixed +++ b/tests/ui/doc/doc-fixable.fixed @@ -1,4 +1,3 @@ - //! This file tests for the `DOC_MARKDOWN` lint. #![allow(dead_code, incomplete_features)] @@ -272,7 +271,7 @@ fn parenthesized_word() {} /// UXes fn plural_acronym_test() {} -extern "C" { +unsafe extern "C" { /// `foo()` //~^ doc_markdown fn in_extern(); diff --git a/tests/ui/doc/doc-fixable.rs b/tests/ui/doc/doc-fixable.rs index ed3925694c67e..5b6f2bd8330c5 100644 --- a/tests/ui/doc/doc-fixable.rs +++ b/tests/ui/doc/doc-fixable.rs @@ -1,4 +1,3 @@ - //! This file tests for the `DOC_MARKDOWN` lint. #![allow(dead_code, incomplete_features)] @@ -272,7 +271,7 @@ fn parenthesized_word() {} /// UXes fn plural_acronym_test() {} -extern "C" { +unsafe extern "C" { /// foo() //~^ doc_markdown fn in_extern(); diff --git a/tests/ui/doc/doc-fixable.stderr b/tests/ui/doc/doc-fixable.stderr index d67da75a230ca..98c26e6bec2eb 100644 --- a/tests/ui/doc/doc-fixable.stderr +++ b/tests/ui/doc/doc-fixable.stderr @@ -1,5 +1,5 @@ error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:9:9 + --> tests/ui/doc/doc-fixable.rs:8:9 | LL | /// The foo_bar function does _nothing_. See also foo::bar. (note the dot there) | ^^^^^^^ @@ -13,7 +13,7 @@ LL + /// The `foo_bar` function does _nothing_. See also foo::bar. (note the dot | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:9:51 + --> tests/ui/doc/doc-fixable.rs:8:51 | LL | /// The foo_bar function does _nothing_. See also foo::bar. (note the dot there) | ^^^^^^^^ @@ -25,7 +25,7 @@ LL + /// The foo_bar function does _nothing_. See also `foo::bar`. (note the dot | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:12:83 + --> tests/ui/doc/doc-fixable.rs:11:83 | LL | /// Markdown is _weird_. I mean _really weird_. This \_ is ok. So is `_`. But not Foo::some_fun | ^^^^^^^^^^^^^ @@ -37,7 +37,7 @@ LL + /// Markdown is _weird_. I mean _really weird_. This \_ is ok. So is `_`. B | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:15:13 + --> tests/ui/doc/doc-fixable.rs:14:13 | LL | /// Here be ::a::global:path, and _::another::global::path_. :: is not a path though. | ^^^^^^^^^^^^^^^^ @@ -49,7 +49,7 @@ LL + /// Here be `::a::global:path`, and _::another::global::path_. :: is not a | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:15:36 + --> tests/ui/doc/doc-fixable.rs:14:36 | LL | /// Here be ::a::global:path, and _::another::global::path_. :: is not a path though. | ^^^^^^^^^^^^^^^^^^^^^^^ @@ -61,7 +61,7 @@ LL + /// Here be ::a::global:path, and _`::another::global::path`_. :: is not a | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:18:25 + --> tests/ui/doc/doc-fixable.rs:17:25 | LL | /// Import an item from ::awesome::global::blob:: (Intended postfix) | ^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -73,7 +73,7 @@ LL + /// Import an item from `::awesome::global::blob::` (Intended postfix) | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:20:31 + --> tests/ui/doc/doc-fixable.rs:19:31 | LL | /// These are the options for ::Cat: (Intended trailing single colon, shouldn't be linted) | ^^^^^ @@ -85,7 +85,7 @@ LL + /// These are the options for `::Cat`: (Intended trailing single colon, sho | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:22:22 + --> tests/ui/doc/doc-fixable.rs:21:22 | LL | /// That's not code ~NotInCodeBlock~. | ^^^^^^^^^^^^^^ @@ -97,7 +97,7 @@ LL + /// That's not code ~`NotInCodeBlock`~. | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:24:5 + --> tests/ui/doc/doc-fixable.rs:23:5 | LL | /// be_sure_we_got_to_the_end_of_it | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -109,7 +109,7 @@ LL + /// `be_sure_we_got_to_the_end_of_it` | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:39:5 + --> tests/ui/doc/doc-fixable.rs:38:5 | LL | /// be_sure_we_got_to_the_end_of_it | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -121,7 +121,7 @@ LL + /// `be_sure_we_got_to_the_end_of_it` | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:47:5 + --> tests/ui/doc/doc-fixable.rs:46:5 | LL | /// be_sure_we_got_to_the_end_of_it | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -133,7 +133,7 @@ LL + /// `be_sure_we_got_to_the_end_of_it` | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:62:5 + --> tests/ui/doc/doc-fixable.rs:61:5 | LL | /// be_sure_we_got_to_the_end_of_it | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -145,7 +145,7 @@ LL + /// `be_sure_we_got_to_the_end_of_it` | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:91:5 + --> tests/ui/doc/doc-fixable.rs:90:5 | LL | /// be_sure_we_got_to_the_end_of_it | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -157,7 +157,7 @@ LL + /// `be_sure_we_got_to_the_end_of_it` | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:109:5 + --> tests/ui/doc/doc-fixable.rs:108:5 | LL | /// be_sure_we_got_to_the_end_of_it | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -169,7 +169,7 @@ LL + /// `be_sure_we_got_to_the_end_of_it` | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:118:8 + --> tests/ui/doc/doc-fixable.rs:117:8 | LL | /// ## CamelCaseThing | ^^^^^^^^^^^^^^ @@ -181,7 +181,7 @@ LL + /// ## `CamelCaseThing` | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:122:7 + --> tests/ui/doc/doc-fixable.rs:121:7 | LL | /// # CamelCaseThing | ^^^^^^^^^^^^^^ @@ -193,7 +193,7 @@ LL + /// # `CamelCaseThing` | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:125:22 + --> tests/ui/doc/doc-fixable.rs:124:22 | LL | /// Not a title #897 CamelCaseThing | ^^^^^^^^^^^^^^ @@ -205,7 +205,7 @@ LL + /// Not a title #897 `CamelCaseThing` | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:127:5 + --> tests/ui/doc/doc-fixable.rs:126:5 | LL | /// be_sure_we_got_to_the_end_of_it | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -217,7 +217,7 @@ LL + /// `be_sure_we_got_to_the_end_of_it` | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:135:5 + --> tests/ui/doc/doc-fixable.rs:134:5 | LL | /// be_sure_we_got_to_the_end_of_it | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -229,7 +229,7 @@ LL + /// `be_sure_we_got_to_the_end_of_it` | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:149:5 + --> tests/ui/doc/doc-fixable.rs:148:5 | LL | /// be_sure_we_got_to_the_end_of_it | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -241,7 +241,7 @@ LL + /// `be_sure_we_got_to_the_end_of_it` | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:161:43 + --> tests/ui/doc/doc-fixable.rs:160:43 | LL | /** E.g., serialization of an empty list: FooBar | ^^^^^^ @@ -253,7 +253,7 @@ LL + /** E.g., serialization of an empty list: `FooBar` | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:166:5 + --> tests/ui/doc/doc-fixable.rs:165:5 | LL | And BarQuz too. | ^^^^^^ @@ -265,7 +265,7 @@ LL + And `BarQuz` too. | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:167:1 + --> tests/ui/doc/doc-fixable.rs:166:1 | LL | be_sure_we_got_to_the_end_of_it | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -277,7 +277,7 @@ LL + `be_sure_we_got_to_the_end_of_it` | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:175:43 + --> tests/ui/doc/doc-fixable.rs:174:43 | LL | /** E.g., serialization of an empty list: FooBar | ^^^^^^ @@ -289,7 +289,7 @@ LL + /** E.g., serialization of an empty list: `FooBar` | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:180:5 + --> tests/ui/doc/doc-fixable.rs:179:5 | LL | And BarQuz too. | ^^^^^^ @@ -301,7 +301,7 @@ LL + And `BarQuz` too. | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:181:1 + --> tests/ui/doc/doc-fixable.rs:180:1 | LL | be_sure_we_got_to_the_end_of_it | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -313,7 +313,7 @@ LL + `be_sure_we_got_to_the_end_of_it` | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:195:5 + --> tests/ui/doc/doc-fixable.rs:194:5 | LL | /// be_sure_we_got_to_the_end_of_it | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -325,7 +325,7 @@ LL + /// `be_sure_we_got_to_the_end_of_it` | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:215:22 + --> tests/ui/doc/doc-fixable.rs:214:22 | LL | /// An iterator over mycrate::Collection's values. | ^^^^^^^^^^^^^^^^^^^ @@ -337,7 +337,7 @@ LL + /// An iterator over `mycrate::Collection`'s values. | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:240:34 + --> tests/ui/doc/doc-fixable.rs:239:34 | LL | /// Foo \[bar\] \[baz\] \[qux\]. DocMarkdownLint | ^^^^^^^^^^^^^^^ @@ -349,7 +349,7 @@ LL + /// Foo \[bar\] \[baz\] \[qux\]. `DocMarkdownLint` | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:264:22 + --> tests/ui/doc/doc-fixable.rs:263:22 | LL | /// There is no try (do() or do_not()). | ^^^^ @@ -361,7 +361,7 @@ LL + /// There is no try (`do()` or do_not()). | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:264:30 + --> tests/ui/doc/doc-fixable.rs:263:30 | LL | /// There is no try (do() or do_not()). | ^^^^^^^^ @@ -373,7 +373,7 @@ LL + /// There is no try (do() or `do_not()`). | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:269:5 + --> tests/ui/doc/doc-fixable.rs:268:5 | LL | /// ABes | ^^^^ @@ -385,7 +385,7 @@ LL + /// `ABes` | error: item in documentation is missing backticks - --> tests/ui/doc/doc-fixable.rs:276:9 + --> tests/ui/doc/doc-fixable.rs:275:9 | LL | /// foo() | ^^^^^ @@ -397,7 +397,7 @@ LL + /// `foo()` | error: you should put bare URLs between `<`/`>` or make a proper Markdown link - --> tests/ui/doc/doc-fixable.rs:281:5 + --> tests/ui/doc/doc-fixable.rs:280:5 | LL | /// https://github.com/rust-lang/rust-clippy/pull/12836 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `` diff --git a/tests/ui/doc_unsafe.rs b/tests/ui/doc_unsafe.rs index 1bdf01e4e22e9..7146fd7941ab0 100644 --- a/tests/ui/doc_unsafe.rs +++ b/tests/ui/doc_unsafe.rs @@ -103,7 +103,7 @@ macro_rules! very_unsafe { /// /// Please keep the seat belt fastened pub unsafe fn drive() { - whee() + unsafe { whee() } } }; } diff --git a/tests/ui/double_ended_iterator_last.fixed b/tests/ui/double_ended_iterator_last.fixed index 17d0d71a88545..2ce0c04c3017d 100644 --- a/tests/ui/double_ended_iterator_last.fixed +++ b/tests/ui/double_ended_iterator_last.fixed @@ -52,28 +52,35 @@ fn main() { let _ = CustomLast.last(); } +// Should not be linted because applying the lint would move the original iterator. This can only be +// linted if the iterator is used thereafter. fn issue_14139() { let mut index = [true, true, false, false, false, true].iter(); - let mut subindex = index.by_ref().take(3); - let _ = subindex.next_back(); //~ ERROR: called `Iterator::last` on a `DoubleEndedIterator` + let subindex = index.by_ref().take(3); + let _ = subindex.last(); + let _ = index.next(); let mut index = [true, true, false, false, false, true].iter(); let mut subindex = index.by_ref().take(3); - let _ = subindex.next_back(); //~ ERROR: called `Iterator::last` on a `DoubleEndedIterator` + let _ = subindex.last(); + let _ = index.next(); let mut index = [true, true, false, false, false, true].iter(); let mut subindex = index.by_ref().take(3); let subindex = &mut subindex; - let _ = subindex.next_back(); //~ ERROR: called `Iterator::last` on a `DoubleEndedIterator` + let _ = subindex.last(); + let _ = index.next(); let mut index = [true, true, false, false, false, true].iter(); let mut subindex = index.by_ref().take(3); let subindex = &mut subindex; - let _ = subindex.next_back(); //~ ERROR: called `Iterator::last` on a `DoubleEndedIterator` + let _ = subindex.last(); + let _ = index.next(); let mut index = [true, true, false, false, false, true].iter(); - let (mut subindex, _) = (index.by_ref().take(3), 42); - let _ = subindex.next_back(); //~ ERROR: called `Iterator::last` on a `DoubleEndedIterator` + let (subindex, _) = (index.by_ref().take(3), 42); + let _ = subindex.last(); + let _ = index.next(); } fn drop_order() { @@ -90,3 +97,14 @@ fn drop_order() { //~^ ERROR: called `Iterator::last` on a `DoubleEndedIterator` println!("Done"); } + +fn issue_14444() { + let mut squares = vec![]; + let last_square = [1, 2, 3] + .into_iter() + .map(|x| { + squares.push(x * x); + Some(x * x) + }) + .last(); +} diff --git a/tests/ui/double_ended_iterator_last.rs b/tests/ui/double_ended_iterator_last.rs index 41bc669b1719f..a4eb9b3337b9d 100644 --- a/tests/ui/double_ended_iterator_last.rs +++ b/tests/ui/double_ended_iterator_last.rs @@ -52,28 +52,35 @@ fn main() { let _ = CustomLast.last(); } +// Should not be linted because applying the lint would move the original iterator. This can only be +// linted if the iterator is used thereafter. fn issue_14139() { let mut index = [true, true, false, false, false, true].iter(); let subindex = index.by_ref().take(3); - let _ = subindex.last(); //~ ERROR: called `Iterator::last` on a `DoubleEndedIterator` + let _ = subindex.last(); + let _ = index.next(); let mut index = [true, true, false, false, false, true].iter(); let mut subindex = index.by_ref().take(3); - let _ = subindex.last(); //~ ERROR: called `Iterator::last` on a `DoubleEndedIterator` + let _ = subindex.last(); + let _ = index.next(); let mut index = [true, true, false, false, false, true].iter(); let mut subindex = index.by_ref().take(3); let subindex = &mut subindex; - let _ = subindex.last(); //~ ERROR: called `Iterator::last` on a `DoubleEndedIterator` + let _ = subindex.last(); + let _ = index.next(); let mut index = [true, true, false, false, false, true].iter(); let mut subindex = index.by_ref().take(3); let subindex = &mut subindex; - let _ = subindex.last(); //~ ERROR: called `Iterator::last` on a `DoubleEndedIterator` + let _ = subindex.last(); + let _ = index.next(); let mut index = [true, true, false, false, false, true].iter(); let (subindex, _) = (index.by_ref().take(3), 42); - let _ = subindex.last(); //~ ERROR: called `Iterator::last` on a `DoubleEndedIterator` + let _ = subindex.last(); + let _ = index.next(); } fn drop_order() { @@ -90,3 +97,14 @@ fn drop_order() { //~^ ERROR: called `Iterator::last` on a `DoubleEndedIterator` println!("Done"); } + +fn issue_14444() { + let mut squares = vec![]; + let last_square = [1, 2, 3] + .into_iter() + .map(|x| { + squares.push(x * x); + Some(x * x) + }) + .last(); +} diff --git a/tests/ui/double_ended_iterator_last.stderr b/tests/ui/double_ended_iterator_last.stderr index 1702a24d7a055..fe8cf2dcb2594 100644 --- a/tests/ui/double_ended_iterator_last.stderr +++ b/tests/ui/double_ended_iterator_last.stderr @@ -18,55 +18,7 @@ LL | let _ = DeIterator.last(); | help: try: `next_back()` error: called `Iterator::last` on a `DoubleEndedIterator`; this will needlessly iterate the entire iterator - --> tests/ui/double_ended_iterator_last.rs:58:13 - | -LL | let _ = subindex.last(); - | ^^^^^^^^^^^^^^^ - | -help: try - | -LL ~ let mut subindex = index.by_ref().take(3); -LL ~ let _ = subindex.next_back(); - | - -error: called `Iterator::last` on a `DoubleEndedIterator`; this will needlessly iterate the entire iterator - --> tests/ui/double_ended_iterator_last.rs:62:13 - | -LL | let _ = subindex.last(); - | ^^^^^^^^^------ - | | - | help: try: `next_back()` - -error: called `Iterator::last` on a `DoubleEndedIterator`; this will needlessly iterate the entire iterator - --> tests/ui/double_ended_iterator_last.rs:67:13 - | -LL | let _ = subindex.last(); - | ^^^^^^^^^------ - | | - | help: try: `next_back()` - -error: called `Iterator::last` on a `DoubleEndedIterator`; this will needlessly iterate the entire iterator - --> tests/ui/double_ended_iterator_last.rs:72:13 - | -LL | let _ = subindex.last(); - | ^^^^^^^^^------ - | | - | help: try: `next_back()` - -error: called `Iterator::last` on a `DoubleEndedIterator`; this will needlessly iterate the entire iterator - --> tests/ui/double_ended_iterator_last.rs:76:13 - | -LL | let _ = subindex.last(); - | ^^^^^^^^^^^^^^^ - | -help: try - | -LL ~ let (mut subindex, _) = (index.by_ref().take(3), 42); -LL ~ let _ = subindex.next_back(); - | - -error: called `Iterator::last` on a `DoubleEndedIterator`; this will needlessly iterate the entire iterator - --> tests/ui/double_ended_iterator_last.rs:89:36 + --> tests/ui/double_ended_iterator_last.rs:96:36 | LL | println!("Last element is {}", v.last().unwrap().0); | ^^^^^^^^ @@ -78,5 +30,5 @@ LL ~ let mut v = v.into_iter(); LL ~ println!("Last element is {}", v.next_back().unwrap().0); | -error: aborting due to 8 previous errors +error: aborting due to 3 previous errors diff --git a/tests/ui/double_ended_iterator_last_unfixable.rs b/tests/ui/double_ended_iterator_last_unfixable.rs index 3f125c7f20c1e..7c5de8832d698 100644 --- a/tests/ui/double_ended_iterator_last_unfixable.rs +++ b/tests/ui/double_ended_iterator_last_unfixable.rs @@ -1,10 +1,13 @@ //@no-rustfix #![warn(clippy::double_ended_iterator_last)] +// Should not be linted because applying the lint would move the original iterator. This can only be +// linted if the iterator is used thereafter. fn main() { let mut index = [true, true, false, false, false, true].iter(); let subindex = (index.by_ref().take(3), 42); - let _ = subindex.0.last(); //~ ERROR: called `Iterator::last` on a `DoubleEndedIterator` + let _ = subindex.0.last(); + let _ = index.next(); } fn drop_order() { diff --git a/tests/ui/double_ended_iterator_last_unfixable.stderr b/tests/ui/double_ended_iterator_last_unfixable.stderr index f4be757d00d29..845afc11f0422 100644 --- a/tests/ui/double_ended_iterator_last_unfixable.stderr +++ b/tests/ui/double_ended_iterator_last_unfixable.stderr @@ -1,21 +1,5 @@ error: called `Iterator::last` on a `DoubleEndedIterator`; this will needlessly iterate the entire iterator - --> tests/ui/double_ended_iterator_last_unfixable.rs:7:13 - | -LL | let _ = subindex.0.last(); - | ^^^^^^^^^^^------ - | | - | help: try: `next_back()` - | -note: this must be made mutable to use `.next_back()` - --> tests/ui/double_ended_iterator_last_unfixable.rs:7:13 - | -LL | let _ = subindex.0.last(); - | ^^^^^^^^^^ - = note: `-D clippy::double-ended-iterator-last` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::double_ended_iterator_last)]` - -error: called `Iterator::last` on a `DoubleEndedIterator`; this will needlessly iterate the entire iterator - --> tests/ui/double_ended_iterator_last_unfixable.rs:20:36 + --> tests/ui/double_ended_iterator_last_unfixable.rs:23:36 | LL | println!("Last element is {}", v.0.last().unwrap().0); | ^^^^------ @@ -24,10 +8,12 @@ LL | println!("Last element is {}", v.0.last().unwrap().0); | = note: this change will alter drop order which may be undesirable note: this must be made mutable to use `.next_back()` - --> tests/ui/double_ended_iterator_last_unfixable.rs:20:36 + --> tests/ui/double_ended_iterator_last_unfixable.rs:23:36 | LL | println!("Last element is {}", v.0.last().unwrap().0); | ^^^ + = note: `-D clippy::double-ended-iterator-last` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::double_ended_iterator_last)]` -error: aborting due to 2 previous errors +error: aborting due to 1 previous error diff --git a/tests/ui/eager_transmute.fixed b/tests/ui/eager_transmute.fixed index 14cbb6113e62f..47a32ec836cc9 100644 --- a/tests/ui/eager_transmute.fixed +++ b/tests/ui/eager_transmute.fixed @@ -71,8 +71,10 @@ fn f(op: u8, op2: Data, unrelated: u8) { } unsafe fn f2(op: u8) { - (op < 4).then(|| std::mem::transmute::<_, Opcode>(op)); - //~^ eager_transmute + unsafe { + (op < 4).then(|| std::mem::transmute::<_, Opcode>(op)); + //~^ eager_transmute + } } #[rustc_layout_scalar_valid_range_end(254)] diff --git a/tests/ui/eager_transmute.rs b/tests/ui/eager_transmute.rs index 48d7d50cdaef8..906cd7bccc86f 100644 --- a/tests/ui/eager_transmute.rs +++ b/tests/ui/eager_transmute.rs @@ -71,8 +71,10 @@ fn f(op: u8, op2: Data, unrelated: u8) { } unsafe fn f2(op: u8) { - (op < 4).then_some(std::mem::transmute::<_, Opcode>(op)); - //~^ eager_transmute + unsafe { + (op < 4).then_some(std::mem::transmute::<_, Opcode>(op)); + //~^ eager_transmute + } } #[rustc_layout_scalar_valid_range_end(254)] diff --git a/tests/ui/eager_transmute.stderr b/tests/ui/eager_transmute.stderr index 54850d110eb26..c719ca8adc12e 100644 --- a/tests/ui/eager_transmute.stderr +++ b/tests/ui/eager_transmute.stderr @@ -157,19 +157,19 @@ LL + let _: Option = (..=3).contains(&op).then(|| unsafe { std::mem: | error: this transmute is always evaluated eagerly, even if the condition is false - --> tests/ui/eager_transmute.rs:74:24 + --> tests/ui/eager_transmute.rs:75:28 | -LL | (op < 4).then_some(std::mem::transmute::<_, Opcode>(op)); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +LL | (op < 4).then_some(std::mem::transmute::<_, Opcode>(op)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | help: consider using `bool::then` to only transmute if the condition holds | -LL - (op < 4).then_some(std::mem::transmute::<_, Opcode>(op)); -LL + (op < 4).then(|| std::mem::transmute::<_, Opcode>(op)); +LL - (op < 4).then_some(std::mem::transmute::<_, Opcode>(op)); +LL + (op < 4).then(|| std::mem::transmute::<_, Opcode>(op)); | error: this transmute is always evaluated eagerly, even if the condition is false - --> tests/ui/eager_transmute.rs:104:62 + --> tests/ui/eager_transmute.rs:106:62 | LL | let _: Option> = (v1 > 0).then_some(unsafe { std::mem::transmute(v1) }); | ^^^^^^^^^^^^^^^^^^^^^^^ @@ -181,7 +181,7 @@ LL + let _: Option> = (v1 > 0).then(|| unsafe { std::mem::transm | error: this transmute is always evaluated eagerly, even if the condition is false - --> tests/ui/eager_transmute.rs:111:86 + --> tests/ui/eager_transmute.rs:113:86 | LL | let _: Option = (v2 < NonZero::new(255u8).unwrap()).then_some(unsafe { std::mem::transmute(v2) }); | ^^^^^^^^^^^^^^^^^^^^^^^ @@ -193,7 +193,7 @@ LL + let _: Option = (v2 < NonZero::new(255u8).unwrap()).then(|| u | error: this transmute is always evaluated eagerly, even if the condition is false - --> tests/ui/eager_transmute.rs:118:93 + --> tests/ui/eager_transmute.rs:120:93 | LL | let _: Option = (v2 < NonZero::new(255u8).unwrap()).then_some(unsafe { std::mem::transmute(v2) }); | ^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/empty_docs.rs b/tests/ui/empty_docs.rs index d7768e07901ae..57f8976cd6a79 100644 --- a/tests/ui/empty_docs.rs +++ b/tests/ui/empty_docs.rs @@ -84,7 +84,7 @@ mod issue_12377 { use proc_macro_attr::with_empty_docs; #[with_empty_docs] - extern "C" { + unsafe extern "C" { type Test; } diff --git a/tests/ui/empty_enum_variants_with_brackets.fixed b/tests/ui/empty_enum_variants_with_brackets.fixed index 885f6a50025e9..abdf6ca5cb61e 100644 --- a/tests/ui/empty_enum_variants_with_brackets.fixed +++ b/tests/ui/empty_enum_variants_with_brackets.fixed @@ -6,8 +6,7 @@ pub enum PublicTestEnum { NonEmptyParentheses(i32, i32), // No error EmptyBraces, //~^ empty_enum_variants_with_brackets - EmptyParentheses, - //~^ empty_enum_variants_with_brackets + EmptyParentheses(), // No error as enum is pub } enum TestEnum { @@ -20,6 +19,67 @@ enum TestEnum { AnotherEnum, // No error } +mod issue12551 { + enum EvenOdd { + // Used as functions -> no error + Even(), + Odd(), + // Not used as a function + Unknown, + //~^ empty_enum_variants_with_brackets + } + + fn even_odd(x: i32) -> EvenOdd { + (x % 2 == 0).then(EvenOdd::Even).unwrap_or_else(EvenOdd::Odd) + } + + fn natural_number(x: i32) -> NaturalOrNot { + (x > 0) + .then(NaturalOrNot::Natural) + .unwrap_or_else(NaturalOrNot::NotNatural) + } + + enum NaturalOrNot { + // Used as functions -> no error + Natural(), + NotNatural(), + // Not used as a function + Unknown, + //~^ empty_enum_variants_with_brackets + } + + enum RedundantParenthesesFunctionCall { + // Used as a function call but with redundant parentheses + Parentheses, + //~^ empty_enum_variants_with_brackets + // Not used as a function + NoParentheses, + } + + #[allow(clippy::no_effect)] + fn redundant_parentheses_function_call() { + // The parentheses in the below line are redundant. + RedundantParenthesesFunctionCall::Parentheses; + RedundantParenthesesFunctionCall::NoParentheses; + } + + // Same test as above but with usage of the enum occurring before the definition. + #[allow(clippy::no_effect)] + fn redundant_parentheses_function_call_2() { + // The parentheses in the below line are redundant. + RedundantParenthesesFunctionCall2::Parentheses; + RedundantParenthesesFunctionCall2::NoParentheses; + } + + enum RedundantParenthesesFunctionCall2 { + // Used as a function call but with redundant parentheses + Parentheses, + //~^ empty_enum_variants_with_brackets + // Not used as a function + NoParentheses, + } +} + enum TestEnumWithFeatures { NonEmptyBraces { #[cfg(feature = "thisisneverenabled")] @@ -28,4 +88,18 @@ enum TestEnumWithFeatures { NonEmptyParentheses(#[cfg(feature = "thisisneverenabled")] i32), // No error } +#[derive(Clone)] +enum Foo { + Variant1(i32), + Variant2, + Variant3, //~ ERROR: enum variant has empty brackets +} + +#[derive(Clone)] +pub enum PubFoo { + Variant1(i32), + Variant2, + Variant3(), +} + fn main() {} diff --git a/tests/ui/empty_enum_variants_with_brackets.rs b/tests/ui/empty_enum_variants_with_brackets.rs index 092712ee2ead4..63a5a8e9143e6 100644 --- a/tests/ui/empty_enum_variants_with_brackets.rs +++ b/tests/ui/empty_enum_variants_with_brackets.rs @@ -6,8 +6,7 @@ pub enum PublicTestEnum { NonEmptyParentheses(i32, i32), // No error EmptyBraces {}, //~^ empty_enum_variants_with_brackets - EmptyParentheses(), - //~^ empty_enum_variants_with_brackets + EmptyParentheses(), // No error as enum is pub } enum TestEnum { @@ -20,6 +19,67 @@ enum TestEnum { AnotherEnum, // No error } +mod issue12551 { + enum EvenOdd { + // Used as functions -> no error + Even(), + Odd(), + // Not used as a function + Unknown(), + //~^ empty_enum_variants_with_brackets + } + + fn even_odd(x: i32) -> EvenOdd { + (x % 2 == 0).then(EvenOdd::Even).unwrap_or_else(EvenOdd::Odd) + } + + fn natural_number(x: i32) -> NaturalOrNot { + (x > 0) + .then(NaturalOrNot::Natural) + .unwrap_or_else(NaturalOrNot::NotNatural) + } + + enum NaturalOrNot { + // Used as functions -> no error + Natural(), + NotNatural(), + // Not used as a function + Unknown(), + //~^ empty_enum_variants_with_brackets + } + + enum RedundantParenthesesFunctionCall { + // Used as a function call but with redundant parentheses + Parentheses(), + //~^ empty_enum_variants_with_brackets + // Not used as a function + NoParentheses, + } + + #[allow(clippy::no_effect)] + fn redundant_parentheses_function_call() { + // The parentheses in the below line are redundant. + RedundantParenthesesFunctionCall::Parentheses(); + RedundantParenthesesFunctionCall::NoParentheses; + } + + // Same test as above but with usage of the enum occurring before the definition. + #[allow(clippy::no_effect)] + fn redundant_parentheses_function_call_2() { + // The parentheses in the below line are redundant. + RedundantParenthesesFunctionCall2::Parentheses(); + RedundantParenthesesFunctionCall2::NoParentheses; + } + + enum RedundantParenthesesFunctionCall2 { + // Used as a function call but with redundant parentheses + Parentheses(), + //~^ empty_enum_variants_with_brackets + // Not used as a function + NoParentheses, + } +} + enum TestEnumWithFeatures { NonEmptyBraces { #[cfg(feature = "thisisneverenabled")] @@ -28,4 +88,18 @@ enum TestEnumWithFeatures { NonEmptyParentheses(#[cfg(feature = "thisisneverenabled")] i32), // No error } +#[derive(Clone)] +enum Foo { + Variant1(i32), + Variant2, + Variant3(), //~ ERROR: enum variant has empty brackets +} + +#[derive(Clone)] +pub enum PubFoo { + Variant1(i32), + Variant2, + Variant3(), +} + fn main() {} diff --git a/tests/ui/empty_enum_variants_with_brackets.stderr b/tests/ui/empty_enum_variants_with_brackets.stderr index a9ae3b476dd68..7fe85e829a351 100644 --- a/tests/ui/empty_enum_variants_with_brackets.stderr +++ b/tests/ui/empty_enum_variants_with_brackets.stderr @@ -9,7 +9,15 @@ LL | EmptyBraces {}, = help: remove the brackets error: enum variant has empty brackets - --> tests/ui/empty_enum_variants_with_brackets.rs:9:21 + --> tests/ui/empty_enum_variants_with_brackets.rs:15:16 + | +LL | EmptyBraces {}, + | ^^^ + | + = help: remove the brackets + +error: enum variant has empty brackets + --> tests/ui/empty_enum_variants_with_brackets.rs:17:21 | LL | EmptyParentheses(), | ^^ @@ -17,20 +25,58 @@ LL | EmptyParentheses(), = help: remove the brackets error: enum variant has empty brackets - --> tests/ui/empty_enum_variants_with_brackets.rs:16:16 + --> tests/ui/empty_enum_variants_with_brackets.rs:28:16 | -LL | EmptyBraces {}, - | ^^^ +LL | Unknown(), + | ^^ | = help: remove the brackets error: enum variant has empty brackets - --> tests/ui/empty_enum_variants_with_brackets.rs:18:21 + --> tests/ui/empty_enum_variants_with_brackets.rs:47:16 | -LL | EmptyParentheses(), - | ^^ +LL | Unknown(), + | ^^ + | + = help: remove the brackets + +error: enum variant has empty brackets + --> tests/ui/empty_enum_variants_with_brackets.rs:53:20 + | +LL | Parentheses(), + | ^^ + | +help: remove the brackets + | +LL ~ Parentheses, +LL | +... +LL | // The parentheses in the below line are redundant. +LL ~ RedundantParenthesesFunctionCall::Parentheses; + | + +error: enum variant has empty brackets + --> tests/ui/empty_enum_variants_with_brackets.rs:76:20 + | +LL | Parentheses(), + | ^^ + | +help: remove the brackets + | +LL ~ RedundantParenthesesFunctionCall2::Parentheses; +LL | RedundantParenthesesFunctionCall2::NoParentheses; +... +LL | // Used as a function call but with redundant parentheses +LL ~ Parentheses, + | + +error: enum variant has empty brackets + --> tests/ui/empty_enum_variants_with_brackets.rs:95:13 + | +LL | Variant3(), + | ^^ | = help: remove the brackets -error: aborting due to 4 previous errors +error: aborting due to 8 previous errors diff --git a/tests/ui/empty_line_after/doc_comments.1.fixed b/tests/ui/empty_line_after/doc_comments.1.fixed index e4ba09ea1d478..70ab235b694f5 100644 --- a/tests/ui/empty_line_after/doc_comments.1.fixed +++ b/tests/ui/empty_line_after/doc_comments.1.fixed @@ -142,4 +142,9 @@ impl Foo for LineComment { fn bar() {} } +//~v empty_line_after_doc_comments +/// Docs for this item. +// fn some_item() {} +impl LineComment {} // or any other nameless item kind + fn main() {} diff --git a/tests/ui/empty_line_after/doc_comments.2.fixed b/tests/ui/empty_line_after/doc_comments.2.fixed index a20f9bc20eb56..87c636c6ad2c7 100644 --- a/tests/ui/empty_line_after/doc_comments.2.fixed +++ b/tests/ui/empty_line_after/doc_comments.2.fixed @@ -152,4 +152,10 @@ impl Foo for LineComment { fn bar() {} } +//~v empty_line_after_doc_comments +// /// Docs for this item. +// fn some_item() {} + +impl LineComment {} // or any other nameless item kind + fn main() {} diff --git a/tests/ui/empty_line_after/doc_comments.rs b/tests/ui/empty_line_after/doc_comments.rs index 9e3ddfd5abe11..91e9c1ac0b6d3 100644 --- a/tests/ui/empty_line_after/doc_comments.rs +++ b/tests/ui/empty_line_after/doc_comments.rs @@ -155,4 +155,10 @@ impl Foo for LineComment { fn bar() {} } +//~v empty_line_after_doc_comments +/// Docs for this item. +// fn some_item() {} + +impl LineComment {} // or any other nameless item kind + fn main() {} diff --git a/tests/ui/empty_line_after/doc_comments.stderr b/tests/ui/empty_line_after/doc_comments.stderr index fe25ba9afcb90..ae8cb91ba12f7 100644 --- a/tests/ui/empty_line_after/doc_comments.stderr +++ b/tests/ui/empty_line_after/doc_comments.stderr @@ -87,7 +87,7 @@ LL | fn new_code() {} | ----------- the comment documents this function | = help: if the empty line is unintentional, remove it -help: if the doc comment should not document `new_code` comment it out +help: if the doc comment should not document function `new_code` then comment it out | LL | // /// docs for `old_code` | ++ @@ -107,7 +107,7 @@ LL | struct Multiple; | --------------- the comment documents this struct | = help: if the empty lines are unintentional, remove them -help: if the doc comment should not document `Multiple` comment it out +help: if the doc comment should not document struct `Multiple` then comment it out | LL ~ // /// Docs LL ~ // /// for OldA @@ -149,7 +149,7 @@ LL | fn new_code() {} | ----------- the comment documents this function | = help: if the empty line is unintentional, remove it -help: if the doc comment should not document `new_code` comment it out +help: if the doc comment should not document function `new_code` then comment it out | LL - /** LL + /* @@ -167,7 +167,7 @@ LL | fn new_code2() {} | ------------ the comment documents this function | = help: if the empty line is unintentional, remove it -help: if the doc comment should not document `new_code2` comment it out +help: if the doc comment should not document function `new_code2` then comment it out | LL | // /// Docs for `old_code2` | ++ @@ -183,10 +183,26 @@ LL | fn bar() {} | ------ the comment documents this function | = help: if the empty line is unintentional, remove it -help: if the doc comment should not document `bar` comment it out +help: if the doc comment should not document function `bar` then comment it out | LL | // /// comment on assoc item | ++ -error: aborting due to 11 previous errors +error: empty line after doc comment + --> tests/ui/empty_line_after/doc_comments.rs:159:1 + | +LL | / /// Docs for this item. +LL | | // fn some_item() {} +LL | | + | |_^ +LL | impl LineComment {} // or any other nameless item kind + | - the comment documents this implementation + | + = help: if the empty line is unintentional, remove it +help: if the doc comment should not document the following item then comment it out + | +LL | // /// Docs for this item. + | ++ + +error: aborting due to 12 previous errors diff --git a/tests/ui/entry.fixed b/tests/ui/entry.fixed index 69452a8d9a671..f2df9f0204ea6 100644 --- a/tests/ui/entry.fixed +++ b/tests/ui/entry.fixed @@ -226,4 +226,26 @@ fn issue11976() { } } +mod issue14449 { + use std::collections::BTreeMap; + + pub struct Meow { + map: BTreeMap, + } + + impl Meow { + fn pet(&self, _key: &str, _v: u32) -> u32 { + 42 + } + } + + pub fn f(meow: &Meow, x: String) { + if meow.map.contains_key(&x) { + let _ = meow.pet(&x, 1); + } else { + let _ = meow.pet(&x, 0); + } + } +} + fn main() {} diff --git a/tests/ui/entry.rs b/tests/ui/entry.rs index 3578324f01c58..166eea417ac23 100644 --- a/tests/ui/entry.rs +++ b/tests/ui/entry.rs @@ -232,4 +232,26 @@ fn issue11976() { } } +mod issue14449 { + use std::collections::BTreeMap; + + pub struct Meow { + map: BTreeMap, + } + + impl Meow { + fn pet(&self, _key: &str, _v: u32) -> u32 { + 42 + } + } + + pub fn f(meow: &Meow, x: String) { + if meow.map.contains_key(&x) { + let _ = meow.pet(&x, 1); + } else { + let _ = meow.pet(&x, 0); + } + } +} + fn main() {} diff --git a/tests/ui/explicit_auto_deref.fixed b/tests/ui/explicit_auto_deref.fixed index 7235f7d5b82af..ec6bed152e797 100644 --- a/tests/ui/explicit_auto_deref.fixed +++ b/tests/ui/explicit_auto_deref.fixed @@ -59,7 +59,7 @@ fn f_str_t(_: &str, _: T) {} fn f_box_t(_: &Box) {} -extern "C" { +unsafe extern "C" { fn var(_: u32, ...); } diff --git a/tests/ui/explicit_auto_deref.rs b/tests/ui/explicit_auto_deref.rs index c4d2b28ff4b5f..ca58c650d9ce9 100644 --- a/tests/ui/explicit_auto_deref.rs +++ b/tests/ui/explicit_auto_deref.rs @@ -59,7 +59,7 @@ fn f_str_t(_: &str, _: T) {} fn f_box_t(_: &Box) {} -extern "C" { +unsafe extern "C" { fn var(_: u32, ...); } diff --git a/tests/ui/filter_map_bool_then_unfixable.rs b/tests/ui/filter_map_bool_then_unfixable.rs new file mode 100644 index 0000000000000..68294292502ac --- /dev/null +++ b/tests/ui/filter_map_bool_then_unfixable.rs @@ -0,0 +1,63 @@ +#![allow(clippy::question_mark, unused)] +#![warn(clippy::filter_map_bool_then)] +//@no-rustfix + +fn issue11617() { + let mut x: Vec = vec![0; 10]; + let _ = (0..x.len()).zip(x.clone().iter()).filter_map(|(i, v)| { + //~^ filter_map_bool_then + (x[i] != *v).then(|| { + x[i] = i; + i + }) + }); +} + +mod issue14368 { + + fn do_something(_: ()) -> bool { + true + } + + fn option_with_early_return(x: &[Option]) { + let _ = x.iter().filter_map(|&x| x?.then(|| do_something(()))); + //~^ filter_map_bool_then + let _ = x + .iter() + .filter_map(|&x| if let Some(x) = x { x } else { return None }.then(|| do_something(()))); + //~^ filter_map_bool_then + let _ = x.iter().filter_map(|&x| { + //~^ filter_map_bool_then + match x { + Some(x) => x, + None => return None, + } + .then(|| do_something(())) + }); + } + + #[derive(Copy, Clone)] + enum Foo { + One(bool), + Two, + Three(Option), + } + + fn nested_type_with_early_return(x: &[Foo]) { + let _ = x.iter().filter_map(|&x| { + //~^ filter_map_bool_then + match x { + Foo::One(x) => x, + Foo::Two => return None, + Foo::Three(inner) => { + if inner? == 0 { + return Some(false); + } else { + true + } + }, + } + .then(|| do_something(())) + }); + } +} diff --git a/tests/ui/filter_map_bool_then_unfixable.stderr b/tests/ui/filter_map_bool_then_unfixable.stderr new file mode 100644 index 0000000000000..2025958136ba6 --- /dev/null +++ b/tests/ui/filter_map_bool_then_unfixable.stderr @@ -0,0 +1,65 @@ +error: usage of `bool::then` in `filter_map` + --> tests/ui/filter_map_bool_then_unfixable.rs:7:48 + | +LL | let _ = (0..x.len()).zip(x.clone().iter()).filter_map(|(i, v)| { + | ________________________________________________^ +LL | | +LL | | (x[i] != *v).then(|| { +LL | | x[i] = i; +LL | | i +LL | | }) +LL | | }); + | |______^ + | + = help: consider using `filter` then `map` instead + = note: `-D clippy::filter-map-bool-then` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::filter_map_bool_then)]` + +error: usage of `bool::then` in `filter_map` + --> tests/ui/filter_map_bool_then_unfixable.rs:23:26 + | +LL | let _ = x.iter().filter_map(|&x| x?.then(|| do_something(()))); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: consider using `filter` then `map` instead + +error: usage of `bool::then` in `filter_map` + --> tests/ui/filter_map_bool_then_unfixable.rs:27:14 + | +LL | .filter_map(|&x| if let Some(x) = x { x } else { return None }.then(|| do_something(()))); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = help: consider using `filter` then `map` instead + +error: usage of `bool::then` in `filter_map` + --> tests/ui/filter_map_bool_then_unfixable.rs:29:26 + | +LL | let _ = x.iter().filter_map(|&x| { + | __________________________^ +LL | | +LL | | match x { +LL | | Some(x) => x, +... | +LL | | .then(|| do_something(())) +LL | | }); + | |__________^ + | + = help: consider using `filter` then `map` instead + +error: usage of `bool::then` in `filter_map` + --> tests/ui/filter_map_bool_then_unfixable.rs:47:26 + | +LL | let _ = x.iter().filter_map(|&x| { + | __________________________^ +LL | | +LL | | match x { +LL | | Foo::One(x) => x, +... | +LL | | .then(|| do_something(())) +LL | | }); + | |__________^ + | + = help: consider using `filter` then `map` instead + +error: aborting due to 5 previous errors + diff --git a/tests/ui/filter_map_next.rs b/tests/ui/filter_map_next.rs index 2a2237ed16cf2..5414e01c87006 100644 --- a/tests/ui/filter_map_next.rs +++ b/tests/ui/filter_map_next.rs @@ -1,4 +1,4 @@ -#![warn(clippy::all, clippy::pedantic)] +#![warn(clippy::filter_map_next)] fn main() { let a = ["1", "lol", "3", "NaN", "5"]; diff --git a/tests/ui/filter_map_next_fixable.fixed b/tests/ui/filter_map_next_fixable.fixed index 285863ef340db..09c416041a4e9 100644 --- a/tests/ui/filter_map_next_fixable.fixed +++ b/tests/ui/filter_map_next_fixable.fixed @@ -1,5 +1,4 @@ -#![warn(clippy::all, clippy::pedantic)] -#![allow(unused)] +#![warn(clippy::filter_map_next)] fn main() { let a = ["1", "lol", "3", "NaN", "5"]; diff --git a/tests/ui/filter_map_next_fixable.rs b/tests/ui/filter_map_next_fixable.rs index af911689b7c72..3d686ef41d917 100644 --- a/tests/ui/filter_map_next_fixable.rs +++ b/tests/ui/filter_map_next_fixable.rs @@ -1,5 +1,4 @@ -#![warn(clippy::all, clippy::pedantic)] -#![allow(unused)] +#![warn(clippy::filter_map_next)] fn main() { let a = ["1", "lol", "3", "NaN", "5"]; diff --git a/tests/ui/filter_map_next_fixable.stderr b/tests/ui/filter_map_next_fixable.stderr index 707dec8687b1f..1002837732b86 100644 --- a/tests/ui/filter_map_next_fixable.stderr +++ b/tests/ui/filter_map_next_fixable.stderr @@ -1,5 +1,5 @@ error: called `filter_map(..).next()` on an `Iterator`. This is more succinctly expressed by calling `.find_map(..)` instead - --> tests/ui/filter_map_next_fixable.rs:7:32 + --> tests/ui/filter_map_next_fixable.rs:6:32 | LL | let element: Option = a.iter().filter_map(|s| s.parse().ok()).next(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `a.iter().find_map(|s| s.parse().ok())` @@ -8,7 +8,7 @@ LL | let element: Option = a.iter().filter_map(|s| s.parse().ok()).next = help: to override `-D warnings` add `#[allow(clippy::filter_map_next)]` error: called `filter_map(..).next()` on an `Iterator`. This is more succinctly expressed by calling `.find_map(..)` instead - --> tests/ui/filter_map_next_fixable.rs:21:26 + --> tests/ui/filter_map_next_fixable.rs:20:26 | LL | let _: Option = a.iter().filter_map(|s| s.parse().ok()).next(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `a.iter().find_map(|s| s.parse().ok())` diff --git a/tests/ui/find_map.rs b/tests/ui/find_map.rs index aba1f2cbe581e..a9a8508d5b7db 100644 --- a/tests/ui/find_map.rs +++ b/tests/ui/find_map.rs @@ -1,6 +1,5 @@ //@ check-pass -#![warn(clippy::all, clippy::pedantic)] #![allow(clippy::useless_vec)] #[derive(Debug, Copy, Clone)] diff --git a/tests/ui/fn_params_excessive_bools.rs b/tests/ui/fn_params_excessive_bools.rs index cc18708d25faf..25d25663d1e4d 100644 --- a/tests/ui/fn_params_excessive_bools.rs +++ b/tests/ui/fn_params_excessive_bools.rs @@ -1,7 +1,7 @@ #![warn(clippy::fn_params_excessive_bools)] #![allow(clippy::too_many_arguments)] -extern "C" { +unsafe extern "C" { // Should not lint, most of the time users have no control over extern function signatures fn f(_: bool, _: bool, _: bool, _: bool); } @@ -14,8 +14,8 @@ macro_rules! foo { foo!(); -#[no_mangle] -extern "C" fn k(_: bool, _: bool, _: bool, _: bool) {} +#[unsafe(no_mangle)] +unsafe extern "C" fn k(_: bool, _: bool, _: bool, _: bool) {} fn g(_: bool, _: bool, _: bool, _: bool) {} //~^ ERROR: more than 3 bools in function parameters fn h(_: bool, _: bool, _: bool) {} @@ -39,8 +39,8 @@ impl S { fn f(&self, _: bool, _: bool, _: bool, _: bool) {} //~^ ERROR: more than 3 bools in function parameters fn g(&self, _: bool, _: bool, _: bool) {} - #[no_mangle] - extern "C" fn h(_: bool, _: bool, _: bool, _: bool) {} + #[unsafe(no_mangle)] + unsafe extern "C" fn h(_: bool, _: bool, _: bool, _: bool) {} } impl Trait for S { diff --git a/tests/ui/formatting.rs b/tests/ui/formatting.rs index 4e84dcf7d5b70..009815633d759 100644 --- a/tests/ui/formatting.rs +++ b/tests/ui/formatting.rs @@ -1,6 +1,3 @@ -#![warn(clippy::all)] -#![allow(unused_variables)] -#![allow(unused_assignments)] #![allow(clippy::if_same_then_else)] #![allow(clippy::deref_addrof)] #![allow(clippy::nonminimal_bool)] diff --git a/tests/ui/formatting.stderr b/tests/ui/formatting.stderr index 972bd3a6a2e65..d9dc2a55f5b62 100644 --- a/tests/ui/formatting.stderr +++ b/tests/ui/formatting.stderr @@ -1,5 +1,5 @@ error: this looks like you are trying to use `.. -= ..`, but you really are doing `.. = (- ..)` - --> tests/ui/formatting.rs:16:6 + --> tests/ui/formatting.rs:13:6 | LL | a =- 35; | ^^^^ @@ -9,7 +9,7 @@ LL | a =- 35; = help: to override `-D warnings` add `#[allow(clippy::suspicious_assignment_formatting)]` error: this looks like you are trying to use `.. *= ..`, but you really are doing `.. = (* ..)` - --> tests/ui/formatting.rs:20:6 + --> tests/ui/formatting.rs:17:6 | LL | a =* &191; | ^^^^ @@ -17,7 +17,7 @@ LL | a =* &191; = note: to remove this lint, use either `*=` or `= *` error: this looks like you are trying to use `.. != ..`, but you really are doing `.. = (! ..)` - --> tests/ui/formatting.rs:26:6 + --> tests/ui/formatting.rs:23:6 | LL | b =! false; | ^^^^ @@ -25,17 +25,16 @@ LL | b =! false; = note: to remove this lint, use either `!=` or `= !` error: possibly missing a comma here - --> tests/ui/formatting.rs:38:19 + --> tests/ui/formatting.rs:35:19 | LL | -1, -2, -3 // <= no comma here | ^ | = note: to remove this lint, add a comma or write the expr in a single line - = note: `-D clippy::possible-missing-comma` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::possible_missing_comma)]` + = note: `#[deny(clippy::possible_missing_comma)]` on by default error: possibly missing a comma here - --> tests/ui/formatting.rs:45:19 + --> tests/ui/formatting.rs:42:19 | LL | -1, -2, -3 // <= no comma here | ^ @@ -43,7 +42,7 @@ LL | -1, -2, -3 // <= no comma here = note: to remove this lint, add a comma or write the expr in a single line error: possibly missing a comma here - --> tests/ui/formatting.rs:85:11 + --> tests/ui/formatting.rs:82:11 | LL | -1 | ^ diff --git a/tests/ui/from_iter_instead_of_collect.fixed b/tests/ui/from_iter_instead_of_collect.fixed index 8618004efb89f..be98b22779584 100644 --- a/tests/ui/from_iter_instead_of_collect.fixed +++ b/tests/ui/from_iter_instead_of_collect.fixed @@ -73,3 +73,46 @@ fn main() { for _i in [1, 2, 3].iter().collect::>() {} //~^ from_iter_instead_of_collect } + +fn issue14581() { + let nums = [0, 1, 2]; + let _ = &nums.iter().map(|&num| char::from_u32(num).unwrap()).collect::(); + //~^ from_iter_instead_of_collect +} + +fn test_implicit_generic_args(iter: impl Iterator + Copy) { + struct S<'l, T = i32, const A: usize = 3, const B: usize = 3> { + a: [&'l T; A], + b: [&'l T; B], + } + + impl<'l, T, const A: usize, const B: usize> FromIterator<&'l T> for S<'l, T, A, B> { + fn from_iter>(_: I) -> Self { + todo!() + } + } + + let _ = iter.collect::>(); + //~^ from_iter_instead_of_collect + + let _ = iter.collect::>(); + //~^ from_iter_instead_of_collect + + let _ = iter.collect::>(); + //~^ from_iter_instead_of_collect + + let _ = iter.collect::>(); + //~^ from_iter_instead_of_collect + + let _ = iter.collect::>(); + //~^ from_iter_instead_of_collect + + let _ = iter.collect::>(); + //~^ from_iter_instead_of_collect + + let _ = iter.collect::>(); + //~^ from_iter_instead_of_collect + + let _ = iter.collect::(); + //~^ from_iter_instead_of_collect +} diff --git a/tests/ui/from_iter_instead_of_collect.rs b/tests/ui/from_iter_instead_of_collect.rs index c46397e8ff560..ce20fef2ac337 100644 --- a/tests/ui/from_iter_instead_of_collect.rs +++ b/tests/ui/from_iter_instead_of_collect.rs @@ -73,3 +73,46 @@ fn main() { for _i in Vec::<&i32>::from_iter([1, 2, 3].iter()) {} //~^ from_iter_instead_of_collect } + +fn issue14581() { + let nums = [0, 1, 2]; + let _ = &String::from_iter(nums.iter().map(|&num| char::from_u32(num).unwrap())); + //~^ from_iter_instead_of_collect +} + +fn test_implicit_generic_args(iter: impl Iterator + Copy) { + struct S<'l, T = i32, const A: usize = 3, const B: usize = 3> { + a: [&'l T; A], + b: [&'l T; B], + } + + impl<'l, T, const A: usize, const B: usize> FromIterator<&'l T> for S<'l, T, A, B> { + fn from_iter>(_: I) -> Self { + todo!() + } + } + + let _ = >::from_iter(iter); + //~^ from_iter_instead_of_collect + + let _ = >::from_iter(iter); + //~^ from_iter_instead_of_collect + + let _ = >::from_iter(iter); + //~^ from_iter_instead_of_collect + + let _ = >::from_iter(iter); + //~^ from_iter_instead_of_collect + + let _ = >::from_iter(iter); + //~^ from_iter_instead_of_collect + + let _ = >::from_iter(iter); + //~^ from_iter_instead_of_collect + + let _ = >::from_iter(iter); + //~^ from_iter_instead_of_collect + + let _ = ::from_iter(iter); + //~^ from_iter_instead_of_collect +} diff --git a/tests/ui/from_iter_instead_of_collect.stderr b/tests/ui/from_iter_instead_of_collect.stderr index b46d97af152f6..ec11a375c0d87 100644 --- a/tests/ui/from_iter_instead_of_collect.stderr +++ b/tests/ui/from_iter_instead_of_collect.stderr @@ -91,5 +91,59 @@ error: usage of `FromIterator::from_iter` LL | for _i in Vec::<&i32>::from_iter([1, 2, 3].iter()) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `[1, 2, 3].iter().collect::>()` -error: aborting due to 15 previous errors +error: usage of `FromIterator::from_iter` + --> tests/ui/from_iter_instead_of_collect.rs:79:14 + | +LL | let _ = &String::from_iter(nums.iter().map(|&num| char::from_u32(num).unwrap())); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `nums.iter().map(|&num| char::from_u32(num).unwrap()).collect::()` + +error: usage of `FromIterator::from_iter` + --> tests/ui/from_iter_instead_of_collect.rs:95:13 + | +LL | let _ = >::from_iter(iter); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `iter.collect::>()` + +error: usage of `FromIterator::from_iter` + --> tests/ui/from_iter_instead_of_collect.rs:98:13 + | +LL | let _ = >::from_iter(iter); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `iter.collect::>()` + +error: usage of `FromIterator::from_iter` + --> tests/ui/from_iter_instead_of_collect.rs:101:13 + | +LL | let _ = >::from_iter(iter); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `iter.collect::>()` + +error: usage of `FromIterator::from_iter` + --> tests/ui/from_iter_instead_of_collect.rs:104:13 + | +LL | let _ = >::from_iter(iter); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `iter.collect::>()` + +error: usage of `FromIterator::from_iter` + --> tests/ui/from_iter_instead_of_collect.rs:107:13 + | +LL | let _ = >::from_iter(iter); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `iter.collect::>()` + +error: usage of `FromIterator::from_iter` + --> tests/ui/from_iter_instead_of_collect.rs:110:13 + | +LL | let _ = >::from_iter(iter); + | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `iter.collect::>()` + +error: usage of `FromIterator::from_iter` + --> tests/ui/from_iter_instead_of_collect.rs:113:13 + | +LL | let _ = >::from_iter(iter); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `iter.collect::>()` + +error: usage of `FromIterator::from_iter` + --> tests/ui/from_iter_instead_of_collect.rs:116:13 + | +LL | let _ = ::from_iter(iter); + | ^^^^^^^^^^^^^^^^^^^^ help: use `.collect()` instead of `::from_iter()`: `iter.collect::()` + +error: aborting due to 24 previous errors diff --git a/tests/ui/functions.rs b/tests/ui/functions.rs index 9c1ca8bf93009..ceaba392dc200 100644 --- a/tests/ui/functions.rs +++ b/tests/ui/functions.rs @@ -1,5 +1,3 @@ -#![warn(clippy::all)] -#![allow(dead_code, unused_unsafe)] #![allow(clippy::missing_safety_doc, clippy::uninlined_format_args)] // TOO_MANY_ARGUMENTS diff --git a/tests/ui/functions.stderr b/tests/ui/functions.stderr index c8770023f77a0..65cc627cc44c1 100644 --- a/tests/ui/functions.stderr +++ b/tests/ui/functions.stderr @@ -1,5 +1,5 @@ error: this function has too many arguments (8/7) - --> tests/ui/functions.rs:8:1 + --> tests/ui/functions.rs:6:1 | LL | fn bad(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ()) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -8,7 +8,7 @@ LL | fn bad(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f = help: to override `-D warnings` add `#[allow(clippy::too_many_arguments)]` error: this function has too many arguments (8/7) - --> tests/ui/functions.rs:12:1 + --> tests/ui/functions.rs:10:1 | LL | / fn bad_multiline( LL | | @@ -20,88 +20,87 @@ LL | | ) { | |_^ error: this function has too many arguments (8/7) - --> tests/ui/functions.rs:48:5 + --> tests/ui/functions.rs:46:5 | LL | fn bad(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: this function has too many arguments (8/7) - --> tests/ui/functions.rs:58:5 + --> tests/ui/functions.rs:56:5 | LL | fn bad_method(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ()) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: this public function might dereference a raw pointer but is not marked `unsafe` - --> tests/ui/functions.rs:68:34 + --> tests/ui/functions.rs:66:34 | LL | println!("{}", unsafe { *p }); | ^ | - = note: `-D clippy::not-unsafe-ptr-arg-deref` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::not_unsafe_ptr_arg_deref)]` + = note: `#[deny(clippy::not_unsafe_ptr_arg_deref)]` on by default error: this public function might dereference a raw pointer but is not marked `unsafe` - --> tests/ui/functions.rs:71:35 + --> tests/ui/functions.rs:69:35 | LL | println!("{:?}", unsafe { p.as_ref() }); | ^ error: this public function might dereference a raw pointer but is not marked `unsafe` - --> tests/ui/functions.rs:74:33 + --> tests/ui/functions.rs:72:33 | LL | unsafe { std::ptr::read(p) }; | ^ error: this public function might dereference a raw pointer but is not marked `unsafe` - --> tests/ui/functions.rs:86:30 + --> tests/ui/functions.rs:84:30 | LL | println!("{}", unsafe { *p }); | ^ error: this public function might dereference a raw pointer but is not marked `unsafe` - --> tests/ui/functions.rs:89:31 + --> tests/ui/functions.rs:87:31 | LL | println!("{:?}", unsafe { p.as_ref() }); | ^ error: this public function might dereference a raw pointer but is not marked `unsafe` - --> tests/ui/functions.rs:92:29 + --> tests/ui/functions.rs:90:29 | LL | unsafe { std::ptr::read(p) }; | ^ error: this public function might dereference a raw pointer but is not marked `unsafe` - --> tests/ui/functions.rs:99:30 + --> tests/ui/functions.rs:97:30 | LL | println!("{}", unsafe { *p }); | ^ error: this public function might dereference a raw pointer but is not marked `unsafe` - --> tests/ui/functions.rs:102:31 + --> tests/ui/functions.rs:100:31 | LL | println!("{:?}", unsafe { p.as_ref() }); | ^ error: this public function might dereference a raw pointer but is not marked `unsafe` - --> tests/ui/functions.rs:105:29 + --> tests/ui/functions.rs:103:29 | LL | unsafe { std::ptr::read(p) }; | ^ error: this public function might dereference a raw pointer but is not marked `unsafe` - --> tests/ui/functions.rs:115:34 + --> tests/ui/functions.rs:113:34 | LL | println!("{}", unsafe { *p }); | ^ error: this public function might dereference a raw pointer but is not marked `unsafe` - --> tests/ui/functions.rs:118:35 + --> tests/ui/functions.rs:116:35 | LL | println!("{:?}", unsafe { p.as_ref() }); | ^ error: this public function might dereference a raw pointer but is not marked `unsafe` - --> tests/ui/functions.rs:121:33 + --> tests/ui/functions.rs:119:33 | LL | unsafe { std::ptr::read(p) }; | ^ diff --git a/tests/ui/if_not_else.fixed b/tests/ui/if_not_else.fixed index d26a15156cd89..4e6f43e5671e8 100644 --- a/tests/ui/if_not_else.fixed +++ b/tests/ui/if_not_else.fixed @@ -1,4 +1,3 @@ -#![warn(clippy::all)] #![warn(clippy::if_not_else)] fn foo() -> bool { diff --git a/tests/ui/if_not_else.rs b/tests/ui/if_not_else.rs index 6171cf1164955..6cd2e3bd63fe9 100644 --- a/tests/ui/if_not_else.rs +++ b/tests/ui/if_not_else.rs @@ -1,4 +1,3 @@ -#![warn(clippy::all)] #![warn(clippy::if_not_else)] fn foo() -> bool { diff --git a/tests/ui/if_not_else.stderr b/tests/ui/if_not_else.stderr index f44dd0aabc863..824837bd52bb1 100644 --- a/tests/ui/if_not_else.stderr +++ b/tests/ui/if_not_else.stderr @@ -1,5 +1,5 @@ error: unnecessary boolean `not` operation - --> tests/ui/if_not_else.rs:12:5 + --> tests/ui/if_not_else.rs:11:5 | LL | / if !bla() { LL | | @@ -24,7 +24,7 @@ LL + } | error: unnecessary `!=` operation - --> tests/ui/if_not_else.rs:19:5 + --> tests/ui/if_not_else.rs:18:5 | LL | / if 4 != 5 { LL | | @@ -47,7 +47,7 @@ LL + } | error: unnecessary boolean `not` operation - --> tests/ui/if_not_else.rs:34:5 + --> tests/ui/if_not_else.rs:33:5 | LL | / if !(foo() && bla()) { LL | | @@ -79,7 +79,7 @@ LL + } | error: unnecessary boolean `not` operation - --> tests/ui/if_not_else.rs:53:5 + --> tests/ui/if_not_else.rs:52:5 | LL | / if !foo() { LL | | @@ -102,7 +102,7 @@ LL + } | error: unnecessary boolean `not` operation - --> tests/ui/if_not_else.rs:61:5 + --> tests/ui/if_not_else.rs:60:5 | LL | / if !bla() { LL | | @@ -125,7 +125,7 @@ LL + } | error: unnecessary boolean `not` operation - --> tests/ui/if_not_else.rs:72:5 + --> tests/ui/if_not_else.rs:71:5 | LL | / if !foo() { LL | | diff --git a/tests/ui/ignore_without_reason.rs b/tests/ui/ignore_without_reason.rs new file mode 100644 index 0000000000000..53ac34c27248e --- /dev/null +++ b/tests/ui/ignore_without_reason.rs @@ -0,0 +1,14 @@ +#![warn(clippy::ignore_without_reason)] + +fn main() {} + +#[test] +fn unignored_test() {} + +#[test] +#[ignore = "Some good reason"] +fn ignored_with_reason() {} + +#[test] +#[ignore] //~ ignore_without_reason +fn ignored_without_reason() {} diff --git a/tests/ui/ignore_without_reason.stderr b/tests/ui/ignore_without_reason.stderr new file mode 100644 index 0000000000000..4c0210c2bbc08 --- /dev/null +++ b/tests/ui/ignore_without_reason.stderr @@ -0,0 +1,12 @@ +error: `#[ignore]` without reason + --> tests/ui/ignore_without_reason.rs:13:1 + | +LL | #[ignore] + | ^^^^^^^^^ + | + = help: add a reason with `= ".."` + = note: `-D clippy::ignore-without-reason` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::ignore_without_reason)]` + +error: aborting due to 1 previous error + diff --git a/tests/ui/implicit_return.fixed b/tests/ui/implicit_return.fixed index 1cb639b60a9af..728c6e015c155 100644 --- a/tests/ui/implicit_return.fixed +++ b/tests/ui/implicit_return.fixed @@ -165,3 +165,46 @@ with_span!( x } ); + +fn desugared_closure_14446() { + let _ = async || return 0; + //~^ implicit_return + #[rustfmt::skip] + let _ = async || -> i32 { return 0 }; + //~^ implicit_return + let _ = async |a: i32| return a; + //~^ implicit_return + #[rustfmt::skip] + let _ = async |a: i32| { return a }; + //~^ implicit_return + + let _ = async || return 0; + let _ = async || -> i32 { return 0 }; + let _ = async |a: i32| return a; + #[rustfmt::skip] + let _ = async |a: i32| { return a; }; + + let _ = async || return foo().await; + //~^ implicit_return + let _ = async || { + foo().await; + return foo().await + }; + //~^^ implicit_return + #[rustfmt::skip] + let _ = async || { return foo().await }; + //~^ implicit_return + let _ = async || -> bool { return foo().await }; + //~^ implicit_return + + let _ = async || return foo().await; + let _ = async || { + foo().await; + return foo().await; + }; + #[rustfmt::skip] + let _ = async || { return foo().await; }; + let _ = async || -> bool { + return foo().await; + }; +} diff --git a/tests/ui/implicit_return.rs b/tests/ui/implicit_return.rs index 99d75e4987e47..3381fffb6e450 100644 --- a/tests/ui/implicit_return.rs +++ b/tests/ui/implicit_return.rs @@ -165,3 +165,46 @@ with_span!( x } ); + +fn desugared_closure_14446() { + let _ = async || 0; + //~^ implicit_return + #[rustfmt::skip] + let _ = async || -> i32 { 0 }; + //~^ implicit_return + let _ = async |a: i32| a; + //~^ implicit_return + #[rustfmt::skip] + let _ = async |a: i32| { a }; + //~^ implicit_return + + let _ = async || return 0; + let _ = async || -> i32 { return 0 }; + let _ = async |a: i32| return a; + #[rustfmt::skip] + let _ = async |a: i32| { return a; }; + + let _ = async || foo().await; + //~^ implicit_return + let _ = async || { + foo().await; + foo().await + }; + //~^^ implicit_return + #[rustfmt::skip] + let _ = async || { foo().await }; + //~^ implicit_return + let _ = async || -> bool { foo().await }; + //~^ implicit_return + + let _ = async || return foo().await; + let _ = async || { + foo().await; + return foo().await; + }; + #[rustfmt::skip] + let _ = async || { return foo().await; }; + let _ = async || -> bool { + return foo().await; + }; +} diff --git a/tests/ui/implicit_return.stderr b/tests/ui/implicit_return.stderr index 02044df47ac3c..05cd7f62583b1 100644 --- a/tests/ui/implicit_return.stderr +++ b/tests/ui/implicit_return.stderr @@ -183,5 +183,93 @@ help: add `return` as shown LL | return true | ++++++ -error: aborting due to 16 previous errors +error: missing `return` statement + --> tests/ui/implicit_return.rs:170:22 + | +LL | let _ = async || 0; + | ^ + | +help: add `return` as shown + | +LL | let _ = async || return 0; + | ++++++ + +error: missing `return` statement + --> tests/ui/implicit_return.rs:173:31 + | +LL | let _ = async || -> i32 { 0 }; + | ^ + | +help: add `return` as shown + | +LL | let _ = async || -> i32 { return 0 }; + | ++++++ + +error: missing `return` statement + --> tests/ui/implicit_return.rs:175:28 + | +LL | let _ = async |a: i32| a; + | ^ + | +help: add `return` as shown + | +LL | let _ = async |a: i32| return a; + | ++++++ + +error: missing `return` statement + --> tests/ui/implicit_return.rs:178:30 + | +LL | let _ = async |a: i32| { a }; + | ^ + | +help: add `return` as shown + | +LL | let _ = async |a: i32| { return a }; + | ++++++ + +error: missing `return` statement + --> tests/ui/implicit_return.rs:187:22 + | +LL | let _ = async || foo().await; + | ^^^^^ + | +help: add `return` as shown + | +LL | let _ = async || return foo().await; + | ++++++ + +error: missing `return` statement + --> tests/ui/implicit_return.rs:191:9 + | +LL | foo().await + | ^^^^^ + | +help: add `return` as shown + | +LL | return foo().await + | ++++++ + +error: missing `return` statement + --> tests/ui/implicit_return.rs:195:24 + | +LL | let _ = async || { foo().await }; + | ^^^^^ + | +help: add `return` as shown + | +LL | let _ = async || { return foo().await }; + | ++++++ + +error: missing `return` statement + --> tests/ui/implicit_return.rs:197:32 + | +LL | let _ = async || -> bool { foo().await }; + | ^^^^^ + | +help: add `return` as shown + | +LL | let _ = async || -> bool { return foo().await }; + | ++++++ + +error: aborting due to 24 previous errors diff --git a/tests/ui/items_after_test_module/root_module.fixed b/tests/ui/items_after_test_module/root_module.fixed index f036b368a6676..c00d6440f1c6a 100644 --- a/tests/ui/items_after_test_module/root_module.fixed +++ b/tests/ui/items_after_test_module/root_module.fixed @@ -1,4 +1,3 @@ -#![allow(unused)] #![warn(clippy::items_after_test_module)] fn main() {} diff --git a/tests/ui/items_after_test_module/root_module.rs b/tests/ui/items_after_test_module/root_module.rs index de0cbb120330e..23d191e3b13b0 100644 --- a/tests/ui/items_after_test_module/root_module.rs +++ b/tests/ui/items_after_test_module/root_module.rs @@ -1,4 +1,3 @@ -#![allow(unused)] #![warn(clippy::items_after_test_module)] fn main() {} diff --git a/tests/ui/items_after_test_module/root_module.stderr b/tests/ui/items_after_test_module/root_module.stderr index bed8d4bd5a00c..952489ff5ef9a 100644 --- a/tests/ui/items_after_test_module/root_module.stderr +++ b/tests/ui/items_after_test_module/root_module.stderr @@ -1,5 +1,5 @@ error: items after a test module - --> tests/ui/items_after_test_module/root_module.rs:12:1 + --> tests/ui/items_after_test_module/root_module.rs:11:1 | LL | mod tests { | ^^^^^^^^^ diff --git a/tests/ui/iter_cloned_collect.fixed b/tests/ui/iter_cloned_collect.fixed index e9fb44e89598e..231fac7cdde7d 100644 --- a/tests/ui/iter_cloned_collect.fixed +++ b/tests/ui/iter_cloned_collect.fixed @@ -29,3 +29,30 @@ fn main() { let _: Vec = v.to_vec(); //~^ iter_cloned_collect } + +mod issue9119 { + + use std::iter; + + #[derive(Clone)] + struct Example(u16); + + impl iter::FromIterator for Vec { + fn from_iter(iter: T) -> Self + where + T: IntoIterator, + { + iter.into_iter().flat_map(|e| e.0.to_le_bytes()).collect() + } + } + + fn foo() { + let examples = [Example(1), Example(0x1234)]; + let encoded: Vec = examples.iter().cloned().collect(); + assert_eq!(encoded, vec![0x01, 0x00, 0x34, 0x12]); + + let a = [&&String::new()]; + let v: Vec<&&String> = a.to_vec(); + //~^ iter_cloned_collect + } +} diff --git a/tests/ui/iter_cloned_collect.rs b/tests/ui/iter_cloned_collect.rs index c9b8abcc9a0d0..e73b6ecae8021 100644 --- a/tests/ui/iter_cloned_collect.rs +++ b/tests/ui/iter_cloned_collect.rs @@ -33,3 +33,30 @@ fn main() { let _: Vec = v.iter().copied().collect(); //~^ iter_cloned_collect } + +mod issue9119 { + + use std::iter; + + #[derive(Clone)] + struct Example(u16); + + impl iter::FromIterator for Vec { + fn from_iter(iter: T) -> Self + where + T: IntoIterator, + { + iter.into_iter().flat_map(|e| e.0.to_le_bytes()).collect() + } + } + + fn foo() { + let examples = [Example(1), Example(0x1234)]; + let encoded: Vec = examples.iter().cloned().collect(); + assert_eq!(encoded, vec![0x01, 0x00, 0x34, 0x12]); + + let a = [&&String::new()]; + let v: Vec<&&String> = a.iter().cloned().collect(); + //~^ iter_cloned_collect + } +} diff --git a/tests/ui/iter_cloned_collect.stderr b/tests/ui/iter_cloned_collect.stderr index 119698cb46343..f8a507943270d 100644 --- a/tests/ui/iter_cloned_collect.stderr +++ b/tests/ui/iter_cloned_collect.stderr @@ -36,5 +36,11 @@ error: called `iter().copied().collect()` on a slice to create a `Vec`. Calling LL | let _: Vec = v.iter().copied().collect(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `.to_vec()` -error: aborting due to 5 previous errors +error: called `iter().cloned().collect()` on a slice to create a `Vec`. Calling `to_vec()` is both faster and more readable + --> tests/ui/iter_cloned_collect.rs:59:33 + | +LL | let v: Vec<&&String> = a.iter().cloned().collect(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `.to_vec()` + +error: aborting due to 6 previous errors diff --git a/tests/ui/iter_kv_map.fixed b/tests/ui/iter_kv_map.fixed index 7fcab6592e26c..874f749b33d02 100644 --- a/tests/ui/iter_kv_map.fixed +++ b/tests/ui/iter_kv_map.fixed @@ -166,3 +166,18 @@ fn msrv_1_54() { let _ = map.values().map(|v| v + 2).collect::>(); //~^ iter_kv_map } + +fn issue14595() { + pub struct Foo(BTreeMap); + + impl AsRef> for Foo { + fn as_ref(&self) -> &BTreeMap { + &self.0 + } + } + + let map = Foo(BTreeMap::default()); + + let _ = map.as_ref().values().copied().collect::>(); + //~^ iter_kv_map +} diff --git a/tests/ui/iter_kv_map.rs b/tests/ui/iter_kv_map.rs index b590aef7b8031..f570e3c32cb67 100644 --- a/tests/ui/iter_kv_map.rs +++ b/tests/ui/iter_kv_map.rs @@ -170,3 +170,18 @@ fn msrv_1_54() { let _ = map.iter().map(|(_, v)| v + 2).collect::>(); //~^ iter_kv_map } + +fn issue14595() { + pub struct Foo(BTreeMap); + + impl AsRef> for Foo { + fn as_ref(&self) -> &BTreeMap { + &self.0 + } + } + + let map = Foo(BTreeMap::default()); + + let _ = map.as_ref().iter().map(|(_, v)| v).copied().collect::>(); + //~^ iter_kv_map +} diff --git a/tests/ui/iter_kv_map.stderr b/tests/ui/iter_kv_map.stderr index 00d566ed14a28..31ee76c25b7a5 100644 --- a/tests/ui/iter_kv_map.stderr +++ b/tests/ui/iter_kv_map.stderr @@ -263,5 +263,11 @@ error: iterating on a map's values LL | let _ = map.iter().map(|(_, v)| v + 2).collect::>(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `map.values().map(|v| v + 2)` -error: aborting due to 38 previous errors +error: iterating on a map's values + --> tests/ui/iter_kv_map.rs:185:13 + | +LL | let _ = map.as_ref().iter().map(|(_, v)| v).copied().collect::>(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `map.as_ref().values()` + +error: aborting due to 39 previous errors diff --git a/tests/ui/iter_overeager_cloned.fixed b/tests/ui/iter_overeager_cloned.fixed index 9999126902903..b0e548f179093 100644 --- a/tests/ui/iter_overeager_cloned.fixed +++ b/tests/ui/iter_overeager_cloned.fixed @@ -59,7 +59,7 @@ fn main() { iter: impl Iterator + 'a, target: String, ) -> impl Iterator + 'a { - iter.filter(move |&(&a, b)| a == 1 && b == &target).cloned() + iter.filter(move |&&(&a, ref b)| a == 1 && b == &target).cloned() //~^ iter_overeager_cloned } diff --git a/tests/ui/iter_overeager_cloned.rs b/tests/ui/iter_overeager_cloned.rs index 6a860dad5afd8..cedf62a6b4730 100644 --- a/tests/ui/iter_overeager_cloned.rs +++ b/tests/ui/iter_overeager_cloned.rs @@ -60,7 +60,7 @@ fn main() { iter: impl Iterator + 'a, target: String, ) -> impl Iterator + 'a { - iter.cloned().filter(move |(&a, b)| a == 1 && b == &target) + iter.cloned().filter(move |&(&a, ref b)| a == 1 && b == &target) //~^ iter_overeager_cloned } diff --git a/tests/ui/iter_overeager_cloned.stderr b/tests/ui/iter_overeager_cloned.stderr index f3239b59582e3..1616dec95b792 100644 --- a/tests/ui/iter_overeager_cloned.stderr +++ b/tests/ui/iter_overeager_cloned.stderr @@ -120,10 +120,10 @@ LL | let _ = vec.iter().cloned().find(f); error: unnecessarily eager cloning of iterator items --> tests/ui/iter_overeager_cloned.rs:63:9 | -LL | iter.cloned().filter(move |(&a, b)| a == 1 && b == &target) - | ^^^^------------------------------------------------------- +LL | iter.cloned().filter(move |&(&a, ref b)| a == 1 && b == &target) + | ^^^^------------------------------------------------------------ | | - | help: try: `.filter(move |&(&a, b)| a == 1 && b == &target).cloned()` + | help: try: `.filter(move |&&(&a, ref b)| a == 1 && b == &target).cloned()` error: unnecessarily eager cloning of iterator items --> tests/ui/iter_overeager_cloned.rs:75:13 diff --git a/tests/ui/large_futures.fixed b/tests/ui/large_futures.fixed index c2159c58de1ec..4c7215f0abeb0 100644 --- a/tests/ui/large_futures.fixed +++ b/tests/ui/large_futures.fixed @@ -1,7 +1,10 @@ +#![allow( + clippy::future_not_send, + clippy::manual_async_fn, + clippy::never_loop, + clippy::uninlined_format_args +)] #![warn(clippy::large_futures)] -#![allow(clippy::never_loop)] -#![allow(clippy::future_not_send)] -#![allow(clippy::manual_async_fn)] async fn big_fut(_arg: [u8; 1024 * 16]) {} diff --git a/tests/ui/large_futures.rs b/tests/ui/large_futures.rs index 567f6344afeac..2b5860583f5ec 100644 --- a/tests/ui/large_futures.rs +++ b/tests/ui/large_futures.rs @@ -1,7 +1,10 @@ +#![allow( + clippy::future_not_send, + clippy::manual_async_fn, + clippy::never_loop, + clippy::uninlined_format_args +)] #![warn(clippy::large_futures)] -#![allow(clippy::never_loop)] -#![allow(clippy::future_not_send)] -#![allow(clippy::manual_async_fn)] async fn big_fut(_arg: [u8; 1024 * 16]) {} diff --git a/tests/ui/large_futures.stderr b/tests/ui/large_futures.stderr index fd6ba4e3563de..4280c9e2af284 100644 --- a/tests/ui/large_futures.stderr +++ b/tests/ui/large_futures.stderr @@ -1,5 +1,5 @@ error: large future with a size of 16385 bytes - --> tests/ui/large_futures.rs:10:9 + --> tests/ui/large_futures.rs:13:9 | LL | big_fut([0u8; 1024 * 16]).await; | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider `Box::pin` on it: `Box::pin(big_fut([0u8; 1024 * 16]))` @@ -8,37 +8,37 @@ LL | big_fut([0u8; 1024 * 16]).await; = help: to override `-D warnings` add `#[allow(clippy::large_futures)]` error: large future with a size of 16386 bytes - --> tests/ui/large_futures.rs:13:5 + --> tests/ui/large_futures.rs:16:5 | LL | f.await | ^ help: consider `Box::pin` on it: `Box::pin(f)` error: large future with a size of 16387 bytes - --> tests/ui/large_futures.rs:18:9 + --> tests/ui/large_futures.rs:21:9 | LL | wait().await; | ^^^^^^ help: consider `Box::pin` on it: `Box::pin(wait())` error: large future with a size of 16387 bytes - --> tests/ui/large_futures.rs:24:13 + --> tests/ui/large_futures.rs:27:13 | LL | wait().await; | ^^^^^^ help: consider `Box::pin` on it: `Box::pin(wait())` error: large future with a size of 65540 bytes - --> tests/ui/large_futures.rs:32:5 + --> tests/ui/large_futures.rs:35:5 | LL | foo().await; | ^^^^^ help: consider `Box::pin` on it: `Box::pin(foo())` error: large future with a size of 49159 bytes - --> tests/ui/large_futures.rs:35:5 + --> tests/ui/large_futures.rs:38:5 | LL | calls_fut(fut).await; | ^^^^^^^^^^^^^^ help: consider `Box::pin` on it: `Box::pin(calls_fut(fut))` error: large future with a size of 65540 bytes - --> tests/ui/large_futures.rs:48:5 + --> tests/ui/large_futures.rs:51:5 | LL | / async { LL | | @@ -61,7 +61,7 @@ LL + }) | error: large future with a size of 65540 bytes - --> tests/ui/large_futures.rs:61:13 + --> tests/ui/large_futures.rs:64:13 | LL | / async { LL | | diff --git a/tests/ui/len_without_is_empty_expect.rs b/tests/ui/len_without_is_empty_expect.rs new file mode 100644 index 0000000000000..9d1245e2d02ad --- /dev/null +++ b/tests/ui/len_without_is_empty_expect.rs @@ -0,0 +1,28 @@ +//@no-rustfix +#![allow(clippy::len_without_is_empty)] + +// Check that the lint expectation is fulfilled even if the lint is allowed at the type level. +pub struct Empty; + +impl Empty { + #[expect(clippy::len_without_is_empty)] + pub fn len(&self) -> usize { + 0 + } +} + +// Check that the lint expectation is not triggered if it should not +pub struct Empty2; + +impl Empty2 { + #[expect(clippy::len_without_is_empty)] //~ ERROR: this lint expectation is unfulfilled + pub fn len(&self) -> usize { + 0 + } + + pub fn is_empty(&self) -> bool { + false + } +} + +fn main() {} diff --git a/tests/ui/len_without_is_empty_expect.stderr b/tests/ui/len_without_is_empty_expect.stderr new file mode 100644 index 0000000000000..e96870f054e43 --- /dev/null +++ b/tests/ui/len_without_is_empty_expect.stderr @@ -0,0 +1,11 @@ +error: this lint expectation is unfulfilled + --> tests/ui/len_without_is_empty_expect.rs:18:14 + | +LL | #[expect(clippy::len_without_is_empty)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: `-D unfulfilled-lint-expectations` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(unfulfilled_lint_expectations)]` + +error: aborting due to 1 previous error + diff --git a/tests/ui/manual_abs_diff.fixed b/tests/ui/manual_abs_diff.fixed new file mode 100644 index 0000000000000..f1b1278ea6d22 --- /dev/null +++ b/tests/ui/manual_abs_diff.fixed @@ -0,0 +1,106 @@ +#![warn(clippy::manual_abs_diff)] + +use std::time::Duration; + +fn main() { + let a: usize = 5; + let b: usize = 3; + let c: usize = 8; + let d: usize = 11; + + let _ = a.abs_diff(b); + //~^ manual_abs_diff + let _ = b.abs_diff(a); + //~^ manual_abs_diff + + let _ = b.abs_diff(5); + //~^ manual_abs_diff + let _ = b.abs_diff(5); + //~^ manual_abs_diff + + let _ = a.abs_diff(b); + //~^ manual_abs_diff + let _ = b.abs_diff(a); + //~^ manual_abs_diff + + #[allow(arithmetic_overflow)] + { + let _ = if a > b { b - a } else { a - b }; + let _ = if a < b { a - b } else { b - a }; + } + + let _ = (a + b).abs_diff(c + d); + let _ = (c + d).abs_diff(a + b); + + const A: usize = 5; + const B: usize = 3; + // check const context + const _: usize = A.abs_diff(B); + //~^ manual_abs_diff + + let a = Duration::from_secs(3); + let b = Duration::from_secs(5); + let _ = a.abs_diff(b); + //~^ manual_abs_diff + + let a: i32 = 3; + let b: i32 = -5; + let _ = if a > b { a - b } else { b - a }; + let _ = a.abs_diff(b); + //~^ manual_abs_diff +} + +// FIXME: bunch of patterns that should be linted +fn fixme() { + let a: usize = 5; + let b: usize = 3; + let c: usize = 8; + let d: usize = 11; + + { + let out; + if a > b { + out = a - b; + } else { + out = b - a; + } + } + + { + let mut out = 0; + if a > b { + out = a - b; + } else if a < b { + out = b - a; + } + } + + #[allow(clippy::implicit_saturating_sub)] + let _ = if a > b { + a - b + } else if a < b { + b - a + } else { + 0 + }; + + let a: i32 = 3; + let b: i32 = 5; + let _: u32 = if a > b { a - b } else { b - a } as u32; +} + +fn non_primitive_ty() { + #[derive(Eq, PartialEq, PartialOrd)] + struct S(i32); + + impl std::ops::Sub for S { + type Output = S; + + fn sub(self, rhs: Self) -> Self::Output { + Self(self.0 - rhs.0) + } + } + + let (a, b) = (S(10), S(20)); + let _ = if a < b { b - a } else { a - b }; +} diff --git a/tests/ui/manual_abs_diff.rs b/tests/ui/manual_abs_diff.rs new file mode 100644 index 0000000000000..60ef819c12d30 --- /dev/null +++ b/tests/ui/manual_abs_diff.rs @@ -0,0 +1,116 @@ +#![warn(clippy::manual_abs_diff)] + +use std::time::Duration; + +fn main() { + let a: usize = 5; + let b: usize = 3; + let c: usize = 8; + let d: usize = 11; + + let _ = if a > b { a - b } else { b - a }; + //~^ manual_abs_diff + let _ = if a < b { b - a } else { a - b }; + //~^ manual_abs_diff + + let _ = if 5 > b { 5 - b } else { b - 5 }; + //~^ manual_abs_diff + let _ = if b > 5 { b - 5 } else { 5 - b }; + //~^ manual_abs_diff + + let _ = if a >= b { a - b } else { b - a }; + //~^ manual_abs_diff + let _ = if a <= b { b - a } else { a - b }; + //~^ manual_abs_diff + + #[allow(arithmetic_overflow)] + { + let _ = if a > b { b - a } else { a - b }; + let _ = if a < b { a - b } else { b - a }; + } + + let _ = if (a + b) > (c + d) { + //~^ manual_abs_diff + (a + b) - (c + d) + } else { + (c + d) - (a + b) + }; + let _ = if (a + b) < (c + d) { + //~^ manual_abs_diff + (c + d) - (a + b) + } else { + (a + b) - (c + d) + }; + + const A: usize = 5; + const B: usize = 3; + // check const context + const _: usize = if A > B { A - B } else { B - A }; + //~^ manual_abs_diff + + let a = Duration::from_secs(3); + let b = Duration::from_secs(5); + let _ = if a > b { a - b } else { b - a }; + //~^ manual_abs_diff + + let a: i32 = 3; + let b: i32 = -5; + let _ = if a > b { a - b } else { b - a }; + let _ = if a > b { (a - b) as u32 } else { (b - a) as u32 }; + //~^ manual_abs_diff +} + +// FIXME: bunch of patterns that should be linted +fn fixme() { + let a: usize = 5; + let b: usize = 3; + let c: usize = 8; + let d: usize = 11; + + { + let out; + if a > b { + out = a - b; + } else { + out = b - a; + } + } + + { + let mut out = 0; + if a > b { + out = a - b; + } else if a < b { + out = b - a; + } + } + + #[allow(clippy::implicit_saturating_sub)] + let _ = if a > b { + a - b + } else if a < b { + b - a + } else { + 0 + }; + + let a: i32 = 3; + let b: i32 = 5; + let _: u32 = if a > b { a - b } else { b - a } as u32; +} + +fn non_primitive_ty() { + #[derive(Eq, PartialEq, PartialOrd)] + struct S(i32); + + impl std::ops::Sub for S { + type Output = S; + + fn sub(self, rhs: Self) -> Self::Output { + Self(self.0 - rhs.0) + } + } + + let (a, b) = (S(10), S(20)); + let _ = if a < b { b - a } else { a - b }; +} diff --git a/tests/ui/manual_abs_diff.stderr b/tests/ui/manual_abs_diff.stderr new file mode 100644 index 0000000000000..c14c1dc830fbd --- /dev/null +++ b/tests/ui/manual_abs_diff.stderr @@ -0,0 +1,83 @@ +error: manual absolute difference pattern without using `abs_diff` + --> tests/ui/manual_abs_diff.rs:11:13 + | +LL | let _ = if a > b { a - b } else { b - a }; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with `abs_diff`: `a.abs_diff(b)` + | + = note: `-D clippy::manual-abs-diff` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::manual_abs_diff)]` + +error: manual absolute difference pattern without using `abs_diff` + --> tests/ui/manual_abs_diff.rs:13:13 + | +LL | let _ = if a < b { b - a } else { a - b }; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with `abs_diff`: `b.abs_diff(a)` + +error: manual absolute difference pattern without using `abs_diff` + --> tests/ui/manual_abs_diff.rs:16:13 + | +LL | let _ = if 5 > b { 5 - b } else { b - 5 }; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with `abs_diff`: `b.abs_diff(5)` + +error: manual absolute difference pattern without using `abs_diff` + --> tests/ui/manual_abs_diff.rs:18:13 + | +LL | let _ = if b > 5 { b - 5 } else { 5 - b }; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with `abs_diff`: `b.abs_diff(5)` + +error: manual absolute difference pattern without using `abs_diff` + --> tests/ui/manual_abs_diff.rs:21:13 + | +LL | let _ = if a >= b { a - b } else { b - a }; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with `abs_diff`: `a.abs_diff(b)` + +error: manual absolute difference pattern without using `abs_diff` + --> tests/ui/manual_abs_diff.rs:23:13 + | +LL | let _ = if a <= b { b - a } else { a - b }; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with `abs_diff`: `b.abs_diff(a)` + +error: manual absolute difference pattern without using `abs_diff` + --> tests/ui/manual_abs_diff.rs:32:13 + | +LL | let _ = if (a + b) > (c + d) { + | _____________^ +LL | | +LL | | (a + b) - (c + d) +LL | | } else { +LL | | (c + d) - (a + b) +LL | | }; + | |_____^ help: replace with `abs_diff`: `(a + b).abs_diff(c + d)` + +error: manual absolute difference pattern without using `abs_diff` + --> tests/ui/manual_abs_diff.rs:38:13 + | +LL | let _ = if (a + b) < (c + d) { + | _____________^ +LL | | +LL | | (c + d) - (a + b) +LL | | } else { +LL | | (a + b) - (c + d) +LL | | }; + | |_____^ help: replace with `abs_diff`: `(c + d).abs_diff(a + b)` + +error: manual absolute difference pattern without using `abs_diff` + --> tests/ui/manual_abs_diff.rs:48:22 + | +LL | const _: usize = if A > B { A - B } else { B - A }; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with `abs_diff`: `A.abs_diff(B)` + +error: manual absolute difference pattern without using `abs_diff` + --> tests/ui/manual_abs_diff.rs:53:13 + | +LL | let _ = if a > b { a - b } else { b - a }; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with `abs_diff`: `a.abs_diff(b)` + +error: manual absolute difference pattern without using `abs_diff` + --> tests/ui/manual_abs_diff.rs:59:13 + | +LL | let _ = if a > b { (a - b) as u32 } else { (b - a) as u32 }; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with `abs_diff`: `a.abs_diff(b)` + +error: aborting due to 11 previous errors + diff --git a/tests/ui/manual_async_fn.fixed b/tests/ui/manual_async_fn.fixed index ad0266d39e982..a284ca9f62530 100644 --- a/tests/ui/manual_async_fn.fixed +++ b/tests/ui/manual_async_fn.fixed @@ -75,7 +75,7 @@ impl S { async fn elided(_: &i32) -> i32 { 42 } // should be ignored -fn elided_not_bound(_: &i32) -> impl Future { +fn elided_not_bound(_: &i32) -> impl Future + use<> { async { 42 } } @@ -84,7 +84,7 @@ async fn explicit<'a, 'b>(_: &'a i32, _: &'b i32) -> i32 { 42 } // should be ignored #[allow(clippy::needless_lifetimes)] -fn explicit_not_bound<'a, 'b>(_: &'a i32, _: &'b i32) -> impl Future { +fn explicit_not_bound<'a, 'b>(_: &'a i32, _: &'b i32) -> impl Future + use<> { async { 42 } } @@ -94,7 +94,7 @@ mod issue_5765 { struct A; impl A { - fn f(&self) -> impl Future { + fn f(&self) -> impl Future + use<> { async {} } } diff --git a/tests/ui/manual_async_fn.rs b/tests/ui/manual_async_fn.rs index fe367b4bc7b9b..188f8a4982c36 100644 --- a/tests/ui/manual_async_fn.rs +++ b/tests/ui/manual_async_fn.rs @@ -102,7 +102,7 @@ fn elided(_: &i32) -> impl Future + '_ { } // should be ignored -fn elided_not_bound(_: &i32) -> impl Future { +fn elided_not_bound(_: &i32) -> impl Future + use<> { async { 42 } } @@ -114,7 +114,7 @@ fn explicit<'a, 'b>(_: &'a i32, _: &'b i32) -> impl Future + 'a + // should be ignored #[allow(clippy::needless_lifetimes)] -fn explicit_not_bound<'a, 'b>(_: &'a i32, _: &'b i32) -> impl Future { +fn explicit_not_bound<'a, 'b>(_: &'a i32, _: &'b i32) -> impl Future + use<> { async { 42 } } @@ -124,7 +124,7 @@ mod issue_5765 { struct A; impl A { - fn f(&self) -> impl Future { + fn f(&self) -> impl Future + use<> { async {} } } diff --git a/tests/ui/manual_dangling_ptr.fixed b/tests/ui/manual_dangling_ptr.fixed new file mode 100644 index 0000000000000..b6afe7898906c --- /dev/null +++ b/tests/ui/manual_dangling_ptr.fixed @@ -0,0 +1,44 @@ +#![warn(clippy::manual_dangling_ptr)] +use std::mem; + +pub fn foo(_const: *const f32, _mut: *mut i32) {} + +fn main() { + let _: *const u8 = std::ptr::dangling(); + //~^ manual_dangling_ptr + let _ = std::ptr::dangling::(); + //~^ manual_dangling_ptr + let _ = std::ptr::dangling_mut::(); + //~^ manual_dangling_ptr + + let _ = std::ptr::dangling::(); + //~^ manual_dangling_ptr + let _ = std::ptr::dangling::(); + //~^ manual_dangling_ptr + let _ = std::ptr::dangling::(); + //~^ manual_dangling_ptr + + foo(std::ptr::dangling(), std::ptr::dangling_mut()); + //~^ manual_dangling_ptr + //~| manual_dangling_ptr +} + +fn should_not_lint() { + let _ = 0x10 as *mut i32; + let _ = mem::align_of::() as *const u8; + + foo(0 as _, 0 as _); +} + +#[clippy::msrv = "1.83"] +fn _msrv_1_83() { + // `{core, std}::ptr::dangling` was stabilized in 1.84. Do not lint this + foo(4 as *const _, 4 as *mut _); +} + +#[clippy::msrv = "1.84"] +fn _msrv_1_84() { + foo(std::ptr::dangling(), std::ptr::dangling_mut()); + //~^ manual_dangling_ptr + //~| manual_dangling_ptr +} diff --git a/tests/ui/manual_dangling_ptr.rs b/tests/ui/manual_dangling_ptr.rs new file mode 100644 index 0000000000000..581ad50113e28 --- /dev/null +++ b/tests/ui/manual_dangling_ptr.rs @@ -0,0 +1,44 @@ +#![warn(clippy::manual_dangling_ptr)] +use std::mem; + +pub fn foo(_const: *const f32, _mut: *mut i32) {} + +fn main() { + let _: *const u8 = 1 as *const _; + //~^ manual_dangling_ptr + let _ = 2 as *const u32; + //~^ manual_dangling_ptr + let _ = 4 as *mut f32; + //~^ manual_dangling_ptr + + let _ = mem::align_of::() as *const u8; + //~^ manual_dangling_ptr + let _ = mem::align_of::() as *const u32; + //~^ manual_dangling_ptr + let _ = mem::align_of::() as *const usize; + //~^ manual_dangling_ptr + + foo(4 as *const _, 4 as *mut _); + //~^ manual_dangling_ptr + //~| manual_dangling_ptr +} + +fn should_not_lint() { + let _ = 0x10 as *mut i32; + let _ = mem::align_of::() as *const u8; + + foo(0 as _, 0 as _); +} + +#[clippy::msrv = "1.83"] +fn _msrv_1_83() { + // `{core, std}::ptr::dangling` was stabilized in 1.84. Do not lint this + foo(4 as *const _, 4 as *mut _); +} + +#[clippy::msrv = "1.84"] +fn _msrv_1_84() { + foo(4 as *const _, 4 as *mut _); + //~^ manual_dangling_ptr + //~| manual_dangling_ptr +} diff --git a/tests/ui/manual_dangling_ptr.stderr b/tests/ui/manual_dangling_ptr.stderr new file mode 100644 index 0000000000000..e3bc9b16b0d93 --- /dev/null +++ b/tests/ui/manual_dangling_ptr.stderr @@ -0,0 +1,65 @@ +error: manual creation of a dangling pointer + --> tests/ui/manual_dangling_ptr.rs:7:24 + | +LL | let _: *const u8 = 1 as *const _; + | ^^^^^^^^^^^^^ help: use: `std::ptr::dangling()` + | + = note: `-D clippy::manual-dangling-ptr` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::manual_dangling_ptr)]` + +error: manual creation of a dangling pointer + --> tests/ui/manual_dangling_ptr.rs:9:13 + | +LL | let _ = 2 as *const u32; + | ^^^^^^^^^^^^^^^ help: use: `std::ptr::dangling::()` + +error: manual creation of a dangling pointer + --> tests/ui/manual_dangling_ptr.rs:11:13 + | +LL | let _ = 4 as *mut f32; + | ^^^^^^^^^^^^^ help: use: `std::ptr::dangling_mut::()` + +error: manual creation of a dangling pointer + --> tests/ui/manual_dangling_ptr.rs:14:13 + | +LL | let _ = mem::align_of::() as *const u8; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `std::ptr::dangling::()` + +error: manual creation of a dangling pointer + --> tests/ui/manual_dangling_ptr.rs:16:13 + | +LL | let _ = mem::align_of::() as *const u32; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `std::ptr::dangling::()` + +error: manual creation of a dangling pointer + --> tests/ui/manual_dangling_ptr.rs:18:13 + | +LL | let _ = mem::align_of::() as *const usize; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `std::ptr::dangling::()` + +error: manual creation of a dangling pointer + --> tests/ui/manual_dangling_ptr.rs:21:9 + | +LL | foo(4 as *const _, 4 as *mut _); + | ^^^^^^^^^^^^^ help: use: `std::ptr::dangling()` + +error: manual creation of a dangling pointer + --> tests/ui/manual_dangling_ptr.rs:21:24 + | +LL | foo(4 as *const _, 4 as *mut _); + | ^^^^^^^^^^^ help: use: `std::ptr::dangling_mut()` + +error: manual creation of a dangling pointer + --> tests/ui/manual_dangling_ptr.rs:41:9 + | +LL | foo(4 as *const _, 4 as *mut _); + | ^^^^^^^^^^^^^ help: use: `std::ptr::dangling()` + +error: manual creation of a dangling pointer + --> tests/ui/manual_dangling_ptr.rs:41:24 + | +LL | foo(4 as *const _, 4 as *mut _); + | ^^^^^^^^^^^ help: use: `std::ptr::dangling_mut()` + +error: aborting due to 10 previous errors + diff --git a/tests/ui/manual_find.rs b/tests/ui/manual_find.rs index 20b557f21d141..7b9846cfe429d 100644 --- a/tests/ui/manual_find.rs +++ b/tests/ui/manual_find.rs @@ -23,4 +23,32 @@ fn tuple(arr: Vec<(String, i32)>) -> Option { None } +mod issue9521 { + fn condition(x: u32, y: u32) -> Result { + todo!() + } + + fn find_with_early_return(v: Vec) -> Option { + for x in v { + if condition(x, 10).ok()? { + return Some(x); + } + } + None + } + + fn find_with_early_break(v: Vec) -> Option { + for x in v { + if if x < 3 { + break; + } else { + x < 10 + } { + return Some(x); + } + } + None + } +} + fn main() {} diff --git a/tests/ui/manual_ignore_case_cmp.fixed b/tests/ui/manual_ignore_case_cmp.fixed index c1c929585cfd3..cd7adc20b127e 100644 --- a/tests/ui/manual_ignore_case_cmp.fixed +++ b/tests/ui/manual_ignore_case_cmp.fixed @@ -1,5 +1,11 @@ -#![allow(clippy::all)] -#![deny(clippy::manual_ignore_case_cmp)] +#![warn(clippy::manual_ignore_case_cmp)] +#![allow( + clippy::deref_addrof, + clippy::op_ref, + clippy::ptr_arg, + clippy::short_circuit_statement, + clippy::unnecessary_operation +)] use std::ffi::{OsStr, OsString}; diff --git a/tests/ui/manual_ignore_case_cmp.rs b/tests/ui/manual_ignore_case_cmp.rs index ca401e595fe97..85f6719827c93 100644 --- a/tests/ui/manual_ignore_case_cmp.rs +++ b/tests/ui/manual_ignore_case_cmp.rs @@ -1,5 +1,11 @@ -#![allow(clippy::all)] -#![deny(clippy::manual_ignore_case_cmp)] +#![warn(clippy::manual_ignore_case_cmp)] +#![allow( + clippy::deref_addrof, + clippy::op_ref, + clippy::ptr_arg, + clippy::short_circuit_statement, + clippy::unnecessary_operation +)] use std::ffi::{OsStr, OsString}; diff --git a/tests/ui/manual_ignore_case_cmp.stderr b/tests/ui/manual_ignore_case_cmp.stderr index 47378a65799fc..fa7fadd910760 100644 --- a/tests/ui/manual_ignore_case_cmp.stderr +++ b/tests/ui/manual_ignore_case_cmp.stderr @@ -1,14 +1,11 @@ error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:9:8 + --> tests/ui/manual_ignore_case_cmp.rs:15:8 | LL | if a.to_ascii_lowercase() == b.to_ascii_lowercase() { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | -note: the lint level is defined here - --> tests/ui/manual_ignore_case_cmp.rs:2:9 - | -LL | #![deny(clippy::manual_ignore_case_cmp)] - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + = note: `-D clippy::manual-ignore-case-cmp` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::manual_ignore_case_cmp)]` help: consider using `.eq_ignore_ascii_case()` instead | LL - if a.to_ascii_lowercase() == b.to_ascii_lowercase() { @@ -16,7 +13,7 @@ LL + if a.eq_ignore_ascii_case(b) { | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:13:8 + --> tests/ui/manual_ignore_case_cmp.rs:19:8 | LL | if a.to_ascii_uppercase() == b.to_ascii_uppercase() { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -28,7 +25,7 @@ LL + if a.eq_ignore_ascii_case(b) { | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:17:13 + --> tests/ui/manual_ignore_case_cmp.rs:23:13 | LL | let r = a.to_ascii_lowercase() == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -40,7 +37,7 @@ LL + let r = a.eq_ignore_ascii_case(b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:19:18 + --> tests/ui/manual_ignore_case_cmp.rs:25:18 | LL | let r = r || a.to_ascii_uppercase() == b.to_ascii_uppercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -52,7 +49,7 @@ LL + let r = r || a.eq_ignore_ascii_case(b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:21:10 + --> tests/ui/manual_ignore_case_cmp.rs:27:10 | LL | r && a.to_ascii_lowercase() == b.to_uppercase().to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -64,7 +61,7 @@ LL + r && a.eq_ignore_ascii_case(&b.to_uppercase()); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:24:8 + --> tests/ui/manual_ignore_case_cmp.rs:30:8 | LL | if a.to_ascii_lowercase() != b.to_ascii_lowercase() { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -76,7 +73,7 @@ LL + if !a.eq_ignore_ascii_case(b) { | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:28:8 + --> tests/ui/manual_ignore_case_cmp.rs:34:8 | LL | if a.to_ascii_uppercase() != b.to_ascii_uppercase() { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -88,7 +85,7 @@ LL + if !a.eq_ignore_ascii_case(b) { | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:32:13 + --> tests/ui/manual_ignore_case_cmp.rs:38:13 | LL | let r = a.to_ascii_lowercase() != b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -100,7 +97,7 @@ LL + let r = !a.eq_ignore_ascii_case(b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:34:18 + --> tests/ui/manual_ignore_case_cmp.rs:40:18 | LL | let r = r || a.to_ascii_uppercase() != b.to_ascii_uppercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -112,7 +109,7 @@ LL + let r = r || !a.eq_ignore_ascii_case(b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:36:10 + --> tests/ui/manual_ignore_case_cmp.rs:42:10 | LL | r && a.to_ascii_lowercase() != b.to_uppercase().to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -124,7 +121,7 @@ LL + r && !a.eq_ignore_ascii_case(&b.to_uppercase()); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:48:5 + --> tests/ui/manual_ignore_case_cmp.rs:54:5 | LL | a.to_ascii_lowercase() == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -136,7 +133,7 @@ LL + a.eq_ignore_ascii_case(&b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:52:5 + --> tests/ui/manual_ignore_case_cmp.rs:58:5 | LL | a.to_ascii_lowercase() == 'a'; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -148,7 +145,7 @@ LL + a.eq_ignore_ascii_case(&'a'); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:54:5 + --> tests/ui/manual_ignore_case_cmp.rs:60:5 | LL | 'a' == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -160,7 +157,7 @@ LL + 'a'.eq_ignore_ascii_case(&b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:58:5 + --> tests/ui/manual_ignore_case_cmp.rs:64:5 | LL | a.to_ascii_lowercase() == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -172,7 +169,7 @@ LL + a.eq_ignore_ascii_case(&b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:60:5 + --> tests/ui/manual_ignore_case_cmp.rs:66:5 | LL | a.to_ascii_lowercase() == b'a'; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -184,7 +181,7 @@ LL + a.eq_ignore_ascii_case(&b'a'); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:62:5 + --> tests/ui/manual_ignore_case_cmp.rs:68:5 | LL | b'a' == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -196,7 +193,7 @@ LL + b'a'.eq_ignore_ascii_case(&b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:66:5 + --> tests/ui/manual_ignore_case_cmp.rs:72:5 | LL | a.to_ascii_lowercase() == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -208,7 +205,7 @@ LL + a.eq_ignore_ascii_case(b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:68:5 + --> tests/ui/manual_ignore_case_cmp.rs:74:5 | LL | a.to_uppercase().to_ascii_lowercase() == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -220,7 +217,7 @@ LL + a.to_uppercase().eq_ignore_ascii_case(b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:70:5 + --> tests/ui/manual_ignore_case_cmp.rs:76:5 | LL | a.to_ascii_lowercase() == "a"; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -232,7 +229,7 @@ LL + a.eq_ignore_ascii_case("a"); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:72:5 + --> tests/ui/manual_ignore_case_cmp.rs:78:5 | LL | "a" == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -244,7 +241,7 @@ LL + "a".eq_ignore_ascii_case(b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:76:5 + --> tests/ui/manual_ignore_case_cmp.rs:82:5 | LL | a.to_ascii_lowercase() == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -256,7 +253,7 @@ LL + a.eq_ignore_ascii_case(b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:78:5 + --> tests/ui/manual_ignore_case_cmp.rs:84:5 | LL | a.to_uppercase().to_ascii_lowercase() == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -268,7 +265,7 @@ LL + a.to_uppercase().eq_ignore_ascii_case(b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:80:5 + --> tests/ui/manual_ignore_case_cmp.rs:86:5 | LL | a.to_ascii_lowercase() == "a"; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -280,7 +277,7 @@ LL + a.eq_ignore_ascii_case("a"); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:82:5 + --> tests/ui/manual_ignore_case_cmp.rs:88:5 | LL | "a" == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -292,7 +289,7 @@ LL + "a".eq_ignore_ascii_case(b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:86:5 + --> tests/ui/manual_ignore_case_cmp.rs:92:5 | LL | a.to_ascii_lowercase() == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -304,7 +301,7 @@ LL + a.eq_ignore_ascii_case(&b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:88:5 + --> tests/ui/manual_ignore_case_cmp.rs:94:5 | LL | a.to_ascii_lowercase() == "a"; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -316,7 +313,7 @@ LL + a.eq_ignore_ascii_case("a"); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:90:5 + --> tests/ui/manual_ignore_case_cmp.rs:96:5 | LL | "a" == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -328,7 +325,7 @@ LL + "a".eq_ignore_ascii_case(&b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:94:5 + --> tests/ui/manual_ignore_case_cmp.rs:100:5 | LL | a.to_ascii_lowercase() == "a"; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -340,7 +337,7 @@ LL + a.eq_ignore_ascii_case("a"); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:96:5 + --> tests/ui/manual_ignore_case_cmp.rs:102:5 | LL | "a" == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -352,7 +349,7 @@ LL + "a".eq_ignore_ascii_case(&b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:100:5 + --> tests/ui/manual_ignore_case_cmp.rs:106:5 | LL | a.to_ascii_lowercase() == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -364,7 +361,7 @@ LL + a.eq_ignore_ascii_case(b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:102:5 + --> tests/ui/manual_ignore_case_cmp.rs:108:5 | LL | a.to_ascii_lowercase() == "a"; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -376,7 +373,7 @@ LL + a.eq_ignore_ascii_case("a"); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:104:5 + --> tests/ui/manual_ignore_case_cmp.rs:110:5 | LL | "a" == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -388,7 +385,7 @@ LL + "a".eq_ignore_ascii_case(b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:107:5 + --> tests/ui/manual_ignore_case_cmp.rs:113:5 | LL | b.to_ascii_lowercase() == a.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -400,7 +397,7 @@ LL + b.eq_ignore_ascii_case(&a); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:109:5 + --> tests/ui/manual_ignore_case_cmp.rs:115:5 | LL | b.to_ascii_lowercase() == "a"; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -412,7 +409,7 @@ LL + b.eq_ignore_ascii_case("a"); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:111:5 + --> tests/ui/manual_ignore_case_cmp.rs:117:5 | LL | "a" == a.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -424,7 +421,7 @@ LL + "a".eq_ignore_ascii_case(&a); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:115:5 + --> tests/ui/manual_ignore_case_cmp.rs:121:5 | LL | a.to_ascii_lowercase() == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -436,7 +433,7 @@ LL + a.eq_ignore_ascii_case(b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:117:5 + --> tests/ui/manual_ignore_case_cmp.rs:123:5 | LL | a.to_ascii_lowercase() == "a"; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -448,7 +445,7 @@ LL + a.eq_ignore_ascii_case("a"); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:119:5 + --> tests/ui/manual_ignore_case_cmp.rs:125:5 | LL | "a" == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -460,7 +457,7 @@ LL + "a".eq_ignore_ascii_case(b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:122:5 + --> tests/ui/manual_ignore_case_cmp.rs:128:5 | LL | b.to_ascii_lowercase() == a.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -472,7 +469,7 @@ LL + b.eq_ignore_ascii_case(&a); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:124:5 + --> tests/ui/manual_ignore_case_cmp.rs:130:5 | LL | b.to_ascii_lowercase() == "a"; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -484,7 +481,7 @@ LL + b.eq_ignore_ascii_case("a"); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:126:5 + --> tests/ui/manual_ignore_case_cmp.rs:132:5 | LL | "a" == a.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -496,7 +493,7 @@ LL + "a".eq_ignore_ascii_case(&a); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:130:5 + --> tests/ui/manual_ignore_case_cmp.rs:136:5 | LL | a.to_ascii_lowercase() == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -508,7 +505,7 @@ LL + a.eq_ignore_ascii_case(b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:134:5 + --> tests/ui/manual_ignore_case_cmp.rs:140:5 | LL | a.to_ascii_lowercase() == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -520,7 +517,7 @@ LL + a.eq_ignore_ascii_case(&b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:138:5 + --> tests/ui/manual_ignore_case_cmp.rs:144:5 | LL | a.to_ascii_lowercase() == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -532,7 +529,7 @@ LL + a.eq_ignore_ascii_case(b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:140:5 + --> tests/ui/manual_ignore_case_cmp.rs:146:5 | LL | b.to_ascii_lowercase() == a.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -544,7 +541,7 @@ LL + b.eq_ignore_ascii_case(&a); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:144:5 + --> tests/ui/manual_ignore_case_cmp.rs:150:5 | LL | a.to_ascii_lowercase() == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -556,7 +553,7 @@ LL + a.eq_ignore_ascii_case(b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:148:5 + --> tests/ui/manual_ignore_case_cmp.rs:154:5 | LL | a.to_ascii_lowercase() == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -568,7 +565,7 @@ LL + a.eq_ignore_ascii_case(b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:152:5 + --> tests/ui/manual_ignore_case_cmp.rs:158:5 | LL | a.to_ascii_lowercase() == b.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -580,7 +577,7 @@ LL + a.eq_ignore_ascii_case(b); | error: manual case-insensitive ASCII comparison - --> tests/ui/manual_ignore_case_cmp.rs:154:5 + --> tests/ui/manual_ignore_case_cmp.rs:160:5 | LL | b.to_ascii_lowercase() == a.to_ascii_lowercase(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/manual_inspect.fixed b/tests/ui/manual_inspect.fixed index 44f15d61f8563..ec87fe217aee6 100644 --- a/tests/ui/manual_inspect.fixed +++ b/tests/ui/manual_inspect.fixed @@ -1,5 +1,5 @@ +#![allow(clippy::no_effect, clippy::op_ref, clippy::uninlined_format_args)] #![warn(clippy::manual_inspect)] -#![allow(clippy::no_effect, clippy::op_ref)] fn main() { let _ = Some(0).inspect(|&x| { @@ -107,7 +107,7 @@ fn main() { let _ = || { let _x = x; }; - return; + return ; } println!("test"); }); @@ -185,3 +185,12 @@ fn main() { }); } } + +#[rustfmt::skip] +fn layout_check() { + if let Some(x) = Some(1).inspect(|&x| { println!("{x}"); //~ manual_inspect + // Do not collapse code into this comment + }) { + println!("{x}"); + } +} diff --git a/tests/ui/manual_inspect.rs b/tests/ui/manual_inspect.rs index d34f2abce6ae1..e679636201e6a 100644 --- a/tests/ui/manual_inspect.rs +++ b/tests/ui/manual_inspect.rs @@ -1,5 +1,5 @@ +#![allow(clippy::no_effect, clippy::op_ref, clippy::uninlined_format_args)] #![warn(clippy::manual_inspect)] -#![allow(clippy::no_effect, clippy::op_ref)] fn main() { let _ = Some(0).map(|x| { @@ -197,3 +197,12 @@ fn main() { }); } } + +#[rustfmt::skip] +fn layout_check() { + if let Some(x) = Some(1).map(|x| { println!("{x}"); //~ manual_inspect + // Do not collapse code into this comment + x }) { + println!("{x}"); + } +} diff --git a/tests/ui/manual_inspect.stderr b/tests/ui/manual_inspect.stderr index 510325d2baaa9..eb98f9f5995a3 100644 --- a/tests/ui/manual_inspect.stderr +++ b/tests/ui/manual_inspect.stderr @@ -98,7 +98,7 @@ LL | if x.is_empty() { LL | let _ = || { LL ~ let _x = x; LL | }; -LL ~ return; +LL ~ return ; LL | } LL ~ println!("test"); | @@ -187,5 +187,18 @@ LL | LL ~ println!("{}", x); | -error: aborting due to 13 previous errors +error: using `map` over `inspect` + --> tests/ui/manual_inspect.rs:203:30 + | +LL | if let Some(x) = Some(1).map(|x| { println!("{x}"); + | ^^^ + | +help: try + | +LL ~ if let Some(x) = Some(1).inspect(|&x| { println!("{x}"); +LL | // Do not collapse code into this comment +LL ~ }) { + | + +error: aborting due to 14 previous errors diff --git a/tests/ui/manual_is_power_of_two.fixed b/tests/ui/manual_is_power_of_two.fixed index 6f29d76bd2109..8a1ab785dfbfd 100644 --- a/tests/ui/manual_is_power_of_two.fixed +++ b/tests/ui/manual_is_power_of_two.fixed @@ -1,4 +1,17 @@ #![warn(clippy::manual_is_power_of_two)] +#![allow(clippy::precedence)] + +macro_rules! binop { + ($a: expr, equal, $b: expr) => { + $a == $b + }; + ($a: expr, and, $b: expr) => { + $a & $b + }; + ($a: expr, minus, $b: expr) => { + $a - $b + }; +} fn main() { let a = 16_u64; @@ -7,6 +20,8 @@ fn main() { //~^ manual_is_power_of_two let _ = a.is_power_of_two(); //~^ manual_is_power_of_two + let _ = a.is_power_of_two(); + //~^ manual_is_power_of_two // Test different orders of expression let _ = a.is_power_of_two(); @@ -23,4 +38,23 @@ fn main() { // is_power_of_two only works for unsigned integers let _ = b.count_ones() == 1; let _ = b & (b - 1) == 0; + + let i: i32 = 3; + let _ = (i as u32).is_power_of_two(); + //~^ manual_is_power_of_two + + let _ = binop!(a.count_ones(), equal, 1); + let _ = binop!(a, and, a - 1) == 0; + let _ = a & binop!(a, minus, 1) == 0; +} + +#[clippy::msrv = "1.31"] +const fn low_msrv(a: u32) -> bool { + a & (a - 1) == 0 +} + +#[clippy::msrv = "1.32"] +const fn high_msrv(a: u32) -> bool { + a.is_power_of_two() + //~^ manual_is_power_of_two } diff --git a/tests/ui/manual_is_power_of_two.rs b/tests/ui/manual_is_power_of_two.rs index 0c44d7a660b43..57a3b05e0336a 100644 --- a/tests/ui/manual_is_power_of_two.rs +++ b/tests/ui/manual_is_power_of_two.rs @@ -1,10 +1,25 @@ #![warn(clippy::manual_is_power_of_two)] +#![allow(clippy::precedence)] + +macro_rules! binop { + ($a: expr, equal, $b: expr) => { + $a == $b + }; + ($a: expr, and, $b: expr) => { + $a & $b + }; + ($a: expr, minus, $b: expr) => { + $a - $b + }; +} fn main() { let a = 16_u64; let _ = a.count_ones() == 1; //~^ manual_is_power_of_two + let _ = u64::count_ones(a) == 1; + //~^ manual_is_power_of_two let _ = a & (a - 1) == 0; //~^ manual_is_power_of_two @@ -23,4 +38,23 @@ fn main() { // is_power_of_two only works for unsigned integers let _ = b.count_ones() == 1; let _ = b & (b - 1) == 0; + + let i: i32 = 3; + let _ = i as u32 & (i as u32 - 1) == 0; + //~^ manual_is_power_of_two + + let _ = binop!(a.count_ones(), equal, 1); + let _ = binop!(a, and, a - 1) == 0; + let _ = a & binop!(a, minus, 1) == 0; +} + +#[clippy::msrv = "1.31"] +const fn low_msrv(a: u32) -> bool { + a & (a - 1) == 0 +} + +#[clippy::msrv = "1.32"] +const fn high_msrv(a: u32) -> bool { + a & (a - 1) == 0 + //~^ manual_is_power_of_two } diff --git a/tests/ui/manual_is_power_of_two.stderr b/tests/ui/manual_is_power_of_two.stderr index ad12ee10565f6..5781a093d5f2b 100644 --- a/tests/ui/manual_is_power_of_two.stderr +++ b/tests/ui/manual_is_power_of_two.stderr @@ -1,5 +1,5 @@ error: manually reimplementing `is_power_of_two` - --> tests/ui/manual_is_power_of_two.rs:6:13 + --> tests/ui/manual_is_power_of_two.rs:19:13 | LL | let _ = a.count_ones() == 1; | ^^^^^^^^^^^^^^^^^^^ help: consider using `.is_power_of_two()`: `a.is_power_of_two()` @@ -8,34 +8,52 @@ LL | let _ = a.count_ones() == 1; = help: to override `-D warnings` add `#[allow(clippy::manual_is_power_of_two)]` error: manually reimplementing `is_power_of_two` - --> tests/ui/manual_is_power_of_two.rs:8:13 + --> tests/ui/manual_is_power_of_two.rs:21:13 + | +LL | let _ = u64::count_ones(a) == 1; + | ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.is_power_of_two()`: `a.is_power_of_two()` + +error: manually reimplementing `is_power_of_two` + --> tests/ui/manual_is_power_of_two.rs:23:13 | LL | let _ = a & (a - 1) == 0; | ^^^^^^^^^^^^^^^^ help: consider using `.is_power_of_two()`: `a.is_power_of_two()` error: manually reimplementing `is_power_of_two` - --> tests/ui/manual_is_power_of_two.rs:12:13 + --> tests/ui/manual_is_power_of_two.rs:27:13 | LL | let _ = 1 == a.count_ones(); | ^^^^^^^^^^^^^^^^^^^ help: consider using `.is_power_of_two()`: `a.is_power_of_two()` error: manually reimplementing `is_power_of_two` - --> tests/ui/manual_is_power_of_two.rs:14:13 + --> tests/ui/manual_is_power_of_two.rs:29:13 | LL | let _ = (a - 1) & a == 0; | ^^^^^^^^^^^^^^^^ help: consider using `.is_power_of_two()`: `a.is_power_of_two()` error: manually reimplementing `is_power_of_two` - --> tests/ui/manual_is_power_of_two.rs:16:13 + --> tests/ui/manual_is_power_of_two.rs:31:13 | LL | let _ = 0 == a & (a - 1); | ^^^^^^^^^^^^^^^^ help: consider using `.is_power_of_two()`: `a.is_power_of_two()` error: manually reimplementing `is_power_of_two` - --> tests/ui/manual_is_power_of_two.rs:18:13 + --> tests/ui/manual_is_power_of_two.rs:33:13 | LL | let _ = 0 == (a - 1) & a; | ^^^^^^^^^^^^^^^^ help: consider using `.is_power_of_two()`: `a.is_power_of_two()` -error: aborting due to 6 previous errors +error: manually reimplementing `is_power_of_two` + --> tests/ui/manual_is_power_of_two.rs:43:13 + | +LL | let _ = i as u32 & (i as u32 - 1) == 0; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.is_power_of_two()`: `(i as u32).is_power_of_two()` + +error: manually reimplementing `is_power_of_two` + --> tests/ui/manual_is_power_of_two.rs:58:5 + | +LL | a & (a - 1) == 0 + | ^^^^^^^^^^^^^^^^ help: consider using `.is_power_of_two()`: `a.is_power_of_two()` + +error: aborting due to 9 previous errors diff --git a/tests/ui/manual_map_option.rs b/tests/ui/manual_map_option.rs index 9477d0d795d2d..40133748d4599 100644 --- a/tests/ui/manual_map_option.rs +++ b/tests/ui/manual_map_option.rs @@ -101,7 +101,7 @@ fn main() { match &mut Some(String::new()) { //~^ manual_map - Some(ref x) => Some(x.len()), + &mut Some(ref x) => Some(x.len()), None => None, }; diff --git a/tests/ui/manual_map_option.stderr b/tests/ui/manual_map_option.stderr index 8f9bce4c265c9..486379c1e5f33 100644 --- a/tests/ui/manual_map_option.stderr +++ b/tests/ui/manual_map_option.stderr @@ -127,7 +127,7 @@ error: manual implementation of `Option::map` | LL | / match &mut Some(String::new()) { LL | | -LL | | Some(ref x) => Some(x.len()), +LL | | &mut Some(ref x) => Some(x.len()), LL | | None => None, LL | | }; | |_____^ help: try: `Some(String::new()).as_ref().map(|x| x.len())` diff --git a/tests/ui/manual_map_option_2.fixed b/tests/ui/manual_map_option_2.fixed index d698cc74ea65a..206c6d5d07763 100644 --- a/tests/ui/manual_map_option_2.fixed +++ b/tests/ui/manual_map_option_2.fixed @@ -115,7 +115,7 @@ mod with_type_coercion { fn with_fn_ret(s: &Option) -> Option<(String, &str)> { // Don't lint, `map` doesn't work as the return type is adjusted. match s { - Some(x) => Some({ if let Some(ref s) = s { (x.clone(), s) } else { panic!() } }), + Some(x) => Some({ if let Some(s) = s { (x.clone(), s) } else { panic!() } }), None => None, } } @@ -124,7 +124,7 @@ mod with_type_coercion { if true { // Don't lint, `map` doesn't work as the return type is adjusted. return match s { - Some(x) => Some({ if let Some(ref s) = s { (x.clone(), s) } else { panic!() } }), + Some(x) => Some({ if let Some(s) = s { (x.clone(), s) } else { panic!() } }), None => None, }; } @@ -136,7 +136,7 @@ mod with_type_coercion { let x: Option<(String, &'a str)>; x = { match s { - Some(x) => Some({ if let Some(ref s) = s { (x.clone(), s) } else { panic!() } }), + Some(x) => Some({ if let Some(s) = s { (x.clone(), s) } else { panic!() } }), None => None, } }; diff --git a/tests/ui/manual_map_option_2.rs b/tests/ui/manual_map_option_2.rs index 069c2381f6db1..a47dc950760e2 100644 --- a/tests/ui/manual_map_option_2.rs +++ b/tests/ui/manual_map_option_2.rs @@ -143,7 +143,7 @@ mod with_type_coercion { fn with_fn_ret(s: &Option) -> Option<(String, &str)> { // Don't lint, `map` doesn't work as the return type is adjusted. match s { - Some(x) => Some({ if let Some(ref s) = s { (x.clone(), s) } else { panic!() } }), + Some(x) => Some({ if let Some(s) = s { (x.clone(), s) } else { panic!() } }), None => None, } } @@ -152,7 +152,7 @@ mod with_type_coercion { if true { // Don't lint, `map` doesn't work as the return type is adjusted. return match s { - Some(x) => Some({ if let Some(ref s) = s { (x.clone(), s) } else { panic!() } }), + Some(x) => Some({ if let Some(s) = s { (x.clone(), s) } else { panic!() } }), None => None, }; } @@ -164,7 +164,7 @@ mod with_type_coercion { let x: Option<(String, &'a str)>; x = { match s { - Some(x) => Some({ if let Some(ref s) = s { (x.clone(), s) } else { panic!() } }), + Some(x) => Some({ if let Some(s) = s { (x.clone(), s) } else { panic!() } }), None => None, } }; diff --git a/tests/ui/manual_ok_err.fixed b/tests/ui/manual_ok_err.fixed index bc169b64be9fd..e6f799aa58d61 100644 --- a/tests/ui/manual_ok_err.fixed +++ b/tests/ui/manual_ok_err.fixed @@ -80,6 +80,11 @@ fn no_lint() { Ok(3) => None, Ok(v) => Some(v), }; + + let _ = match funcall() { + Ok(v @ 1..) => Some(v), + _ => None, + }; } const fn cf(x: Result) -> Option { diff --git a/tests/ui/manual_ok_err.rs b/tests/ui/manual_ok_err.rs index 03c730d4b4e46..972b2c41ee7aa 100644 --- a/tests/ui/manual_ok_err.rs +++ b/tests/ui/manual_ok_err.rs @@ -116,6 +116,11 @@ fn no_lint() { Ok(3) => None, Ok(v) => Some(v), }; + + let _ = match funcall() { + Ok(v @ 1..) => Some(v), + _ => None, + }; } const fn cf(x: Result) -> Option { diff --git a/tests/ui/manual_ok_err.stderr b/tests/ui/manual_ok_err.stderr index 13fceacda1074..040e170f397e2 100644 --- a/tests/ui/manual_ok_err.stderr +++ b/tests/ui/manual_ok_err.stderr @@ -94,7 +94,7 @@ LL | | }; | |_____^ help: replace with: `(-S).ok()` error: manual implementation of `ok` - --> tests/ui/manual_ok_err.rs:132:12 + --> tests/ui/manual_ok_err.rs:137:12 | LL | } else if let Ok(n) = "1".parse::() { | ____________^ diff --git a/tests/ui/manual_retain.fixed b/tests/ui/manual_retain.fixed index ca8491131c06c..016f520e216c0 100644 --- a/tests/ui/manual_retain.fixed +++ b/tests/ui/manual_retain.fixed @@ -1,5 +1,5 @@ #![warn(clippy::manual_retain)] -#![allow(unused, clippy::redundant_clone)] +#![allow(unused, clippy::needless_borrowed_reference, clippy::redundant_clone)] use std::collections::{BTreeMap, BTreeSet, BinaryHeap, HashMap, HashSet, VecDeque}; fn main() { @@ -31,7 +31,7 @@ fn binary_heap_retain() { // Do lint, because we use pattern matching let mut tuples = BinaryHeap::from([(0, 1), (1, 2), (2, 3)]); - tuples.retain(|(ref x, ref y)| *x == 0); + tuples.retain(|&(ref x, ref y)| *x == 0); //~^ manual_retain tuples.retain(|(x, y)| *x == 0); //~^ manual_retain @@ -99,7 +99,7 @@ fn btree_set_retain() { // Do lint, because we use pattern matching let mut tuples = BTreeSet::from([(0, 1), (1, 2), (2, 3)]); - tuples.retain(|(ref x, ref y)| *x == 0); + tuples.retain(|&(ref x, ref y)| *x == 0); //~^ manual_retain tuples.retain(|(x, y)| *x == 0); //~^ manual_retain @@ -166,7 +166,7 @@ fn hash_set_retain() { // Do lint, because we use pattern matching let mut tuples = HashSet::from([(0, 1), (1, 2), (2, 3)]); - tuples.retain(|(ref x, ref y)| *x == 0); + tuples.retain(|&(ref x, ref y)| *x == 0); //~^ manual_retain tuples.retain(|(x, y)| *x == 0); //~^ manual_retain @@ -220,7 +220,7 @@ fn vec_retain() { // Do lint, because we use pattern matching let mut tuples = vec![(0, 1), (1, 2), (2, 3)]; - tuples.retain(|(ref x, ref y)| *x == 0); + tuples.retain(|&(ref x, ref y)| *x == 0); //~^ manual_retain tuples.retain(|(x, y)| *x == 0); //~^ manual_retain diff --git a/tests/ui/manual_retain.rs b/tests/ui/manual_retain.rs index cd05a41f3f25a..62f9b7b0595d0 100644 --- a/tests/ui/manual_retain.rs +++ b/tests/ui/manual_retain.rs @@ -1,5 +1,5 @@ #![warn(clippy::manual_retain)] -#![allow(unused, clippy::redundant_clone)] +#![allow(unused, clippy::needless_borrowed_reference, clippy::redundant_clone)] use std::collections::{BTreeMap, BTreeSet, BinaryHeap, HashMap, HashSet, VecDeque}; fn main() { @@ -31,7 +31,7 @@ fn binary_heap_retain() { // Do lint, because we use pattern matching let mut tuples = BinaryHeap::from([(0, 1), (1, 2), (2, 3)]); - tuples = tuples.iter().filter(|(ref x, ref y)| *x == 0).copied().collect(); + tuples = tuples.iter().filter(|&&(ref x, ref y)| *x == 0).copied().collect(); //~^ manual_retain tuples = tuples.iter().filter(|(x, y)| *x == 0).copied().collect(); //~^ manual_retain @@ -103,7 +103,7 @@ fn btree_set_retain() { // Do lint, because we use pattern matching let mut tuples = BTreeSet::from([(0, 1), (1, 2), (2, 3)]); - tuples = tuples.iter().filter(|(ref x, ref y)| *x == 0).copied().collect(); + tuples = tuples.iter().filter(|&&(ref x, ref y)| *x == 0).copied().collect(); //~^ manual_retain tuples = tuples.iter().filter(|(x, y)| *x == 0).copied().collect(); //~^ manual_retain @@ -174,7 +174,7 @@ fn hash_set_retain() { // Do lint, because we use pattern matching let mut tuples = HashSet::from([(0, 1), (1, 2), (2, 3)]); - tuples = tuples.iter().filter(|(ref x, ref y)| *x == 0).copied().collect(); + tuples = tuples.iter().filter(|&&(ref x, ref y)| *x == 0).copied().collect(); //~^ manual_retain tuples = tuples.iter().filter(|(x, y)| *x == 0).copied().collect(); //~^ manual_retain @@ -228,7 +228,7 @@ fn vec_retain() { // Do lint, because we use pattern matching let mut tuples = vec![(0, 1), (1, 2), (2, 3)]; - tuples = tuples.iter().filter(|(ref x, ref y)| *x == 0).copied().collect(); + tuples = tuples.iter().filter(|&&(ref x, ref y)| *x == 0).copied().collect(); //~^ manual_retain tuples = tuples.iter().filter(|(x, y)| *x == 0).copied().collect(); //~^ manual_retain diff --git a/tests/ui/manual_retain.stderr b/tests/ui/manual_retain.stderr index 2f81647dd8b7b..e7d3e34b5d7d4 100644 --- a/tests/ui/manual_retain.stderr +++ b/tests/ui/manual_retain.stderr @@ -22,8 +22,8 @@ LL | binary_heap = binary_heap.iter().filter(|&x| x % 2 == 0).cloned().colle error: this expression can be written more simply using `.retain()` --> tests/ui/manual_retain.rs:34:5 | -LL | tuples = tuples.iter().filter(|(ref x, ref y)| *x == 0).copied().collect(); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider calling `.retain()` instead: `tuples.retain(|(ref x, ref y)| *x == 0)` +LL | tuples = tuples.iter().filter(|&&(ref x, ref y)| *x == 0).copied().collect(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider calling `.retain()` instead: `tuples.retain(|&(ref x, ref y)| *x == 0)` error: this expression can be written more simply using `.retain()` --> tests/ui/manual_retain.rs:36:5 @@ -74,8 +74,8 @@ LL | btree_set = btree_set.into_iter().filter(|x| x % 2 == 0).collect(); error: this expression can be written more simply using `.retain()` --> tests/ui/manual_retain.rs:106:5 | -LL | tuples = tuples.iter().filter(|(ref x, ref y)| *x == 0).copied().collect(); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider calling `.retain()` instead: `tuples.retain(|(ref x, ref y)| *x == 0)` +LL | tuples = tuples.iter().filter(|&&(ref x, ref y)| *x == 0).copied().collect(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider calling `.retain()` instead: `tuples.retain(|&(ref x, ref y)| *x == 0)` error: this expression can be written more simply using `.retain()` --> tests/ui/manual_retain.rs:108:5 @@ -126,8 +126,8 @@ LL | hash_set = hash_set.iter().filter(|&x| x % 2 == 0).cloned().collect(); error: this expression can be written more simply using `.retain()` --> tests/ui/manual_retain.rs:177:5 | -LL | tuples = tuples.iter().filter(|(ref x, ref y)| *x == 0).copied().collect(); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider calling `.retain()` instead: `tuples.retain(|(ref x, ref y)| *x == 0)` +LL | tuples = tuples.iter().filter(|&&(ref x, ref y)| *x == 0).copied().collect(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider calling `.retain()` instead: `tuples.retain(|&(ref x, ref y)| *x == 0)` error: this expression can be written more simply using `.retain()` --> tests/ui/manual_retain.rs:179:5 @@ -162,8 +162,8 @@ LL | vec = vec.into_iter().filter(|x| x % 2 == 0).collect(); error: this expression can be written more simply using `.retain()` --> tests/ui/manual_retain.rs:231:5 | -LL | tuples = tuples.iter().filter(|(ref x, ref y)| *x == 0).copied().collect(); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider calling `.retain()` instead: `tuples.retain(|(ref x, ref y)| *x == 0)` +LL | tuples = tuples.iter().filter(|&&(ref x, ref y)| *x == 0).copied().collect(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider calling `.retain()` instead: `tuples.retain(|&(ref x, ref y)| *x == 0)` error: this expression can be written more simply using `.retain()` --> tests/ui/manual_retain.rs:233:5 diff --git a/tests/ui/manual_strip_fixable.fixed b/tests/ui/manual_strip_fixable.fixed index 75a3f1645de33..b59e3719d951d 100644 --- a/tests/ui/manual_strip_fixable.fixed +++ b/tests/ui/manual_strip_fixable.fixed @@ -1,4 +1,5 @@ #![warn(clippy::manual_strip)] +#![allow(clippy::uninlined_format_args)] fn main() { let s = "abc"; diff --git a/tests/ui/manual_strip_fixable.rs b/tests/ui/manual_strip_fixable.rs index 5080068449e20..4fb3a9bf007f6 100644 --- a/tests/ui/manual_strip_fixable.rs +++ b/tests/ui/manual_strip_fixable.rs @@ -1,4 +1,5 @@ #![warn(clippy::manual_strip)] +#![allow(clippy::uninlined_format_args)] fn main() { let s = "abc"; diff --git a/tests/ui/manual_strip_fixable.stderr b/tests/ui/manual_strip_fixable.stderr index 1c276e5d8fdfe..da8b0cd08f893 100644 --- a/tests/ui/manual_strip_fixable.stderr +++ b/tests/ui/manual_strip_fixable.stderr @@ -1,11 +1,11 @@ error: stripping a prefix manually - --> tests/ui/manual_strip_fixable.rs:7:24 + --> tests/ui/manual_strip_fixable.rs:8:24 | LL | let stripped = &s["ab".len()..]; | ^^^^^^^^^^^^^^^^ | note: the prefix was tested here - --> tests/ui/manual_strip_fixable.rs:6:5 + --> tests/ui/manual_strip_fixable.rs:7:5 | LL | if s.starts_with("ab") { | ^^^^^^^^^^^^^^^^^^^^^^^ @@ -19,13 +19,13 @@ LL ~ println!("{stripped}{}", stripped); | error: stripping a suffix manually - --> tests/ui/manual_strip_fixable.rs:13:24 + --> tests/ui/manual_strip_fixable.rs:14:24 | LL | let stripped = &s[..s.len() - "bc".len()]; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: the suffix was tested here - --> tests/ui/manual_strip_fixable.rs:12:5 + --> tests/ui/manual_strip_fixable.rs:13:5 | LL | if s.ends_with("bc") { | ^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/manual_unwrap_or.fixed b/tests/ui/manual_unwrap_or.fixed index 07e4bdd483a8c..e12287a709395 100644 --- a/tests/ui/manual_unwrap_or.fixed +++ b/tests/ui/manual_unwrap_or.fixed @@ -18,11 +18,9 @@ fn option_unwrap_or() { // multiline case #[rustfmt::skip] - Some(1).unwrap_or({ - 42 + 42 - + 42 + 42 + 42 - + 42 + 42 + 42 - }); + Some(1).unwrap_or(42 + 42 + + 42 + 42 + 42 + + 42 + 42 + 42); // string case Some("Bob").unwrap_or("Alice"); @@ -125,11 +123,9 @@ fn result_unwrap_or() { // multiline case #[rustfmt::skip] - Ok::(1).unwrap_or({ - 42 + 42 - + 42 + 42 + 42 - + 42 + 42 + 42 - }); + Ok::(1).unwrap_or(42 + 42 + + 42 + 42 + 42 + + 42 + 42 + 42); // string case Ok::<&str, &str>("Bob").unwrap_or("Alice"); @@ -159,11 +155,7 @@ fn result_unwrap_or() { Ok(s) => s, Err(s) => s, }; - // could lint, but unused_variables takes care of it - match Ok::<&str, &str>("Alice") { - Ok(s) => s, - Err(s) => "Bob", - }; + Ok::<&str, &str>("Alice").unwrap_or("Bob"); Ok::(1).unwrap_or(42); @@ -250,4 +242,12 @@ mod issue_13018 { } } +fn implicit_deref(v: Vec) { + let _ = if let Some(s) = v.first() { s } else { "" }; +} + +fn allowed_manual_unwrap_or_zero() -> u32 { + Some(42).unwrap_or(0) +} + fn main() {} diff --git a/tests/ui/manual_unwrap_or.rs b/tests/ui/manual_unwrap_or.rs index c88b6f95da68e..53cffcab5b56c 100644 --- a/tests/ui/manual_unwrap_or.rs +++ b/tests/ui/manual_unwrap_or.rs @@ -216,8 +216,8 @@ fn result_unwrap_or() { Ok(s) => s, Err(s) => s, }; - // could lint, but unused_variables takes care of it match Ok::<&str, &str>("Alice") { + //~^ manual_unwrap_or Ok(s) => s, Err(s) => "Bob", }; @@ -316,4 +316,17 @@ mod issue_13018 { } } +fn implicit_deref(v: Vec) { + let _ = if let Some(s) = v.first() { s } else { "" }; +} + +fn allowed_manual_unwrap_or_zero() -> u32 { + if let Some(x) = Some(42) { + //~^ manual_unwrap_or + x + } else { + 0 + } +} + fn main() {} diff --git a/tests/ui/manual_unwrap_or.stderr b/tests/ui/manual_unwrap_or.stderr index a5deb55786e96..320e895fb8237 100644 --- a/tests/ui/manual_unwrap_or.stderr +++ b/tests/ui/manual_unwrap_or.stderr @@ -44,11 +44,9 @@ LL | | }; | help: replace with | -LL ~ Some(1).unwrap_or({ -LL + 42 + 42 -LL + + 42 + 42 + 42 -LL + + 42 + 42 + 42 -LL ~ }); +LL ~ Some(1).unwrap_or(42 + 42 +LL + + 42 + 42 + 42 +LL ~ + 42 + 42 + 42); | error: this pattern reimplements `Option::unwrap_or` @@ -145,11 +143,9 @@ LL | | }; | help: replace with | -LL ~ Ok::(1).unwrap_or({ -LL + 42 + 42 -LL + + 42 + 42 + 42 -LL + + 42 + 42 + 42 -LL ~ }); +LL ~ Ok::(1).unwrap_or(42 + 42 +LL + + 42 + 42 + 42 +LL ~ + 42 + 42 + 42); | error: this pattern reimplements `Result::unwrap_or` @@ -162,6 +158,16 @@ LL | | Err(_) => "Alice", LL | | }; | |_____^ help: replace with: `Ok::<&str, &str>("Bob").unwrap_or("Alice")` +error: this pattern reimplements `Result::unwrap_or` + --> tests/ui/manual_unwrap_or.rs:219:5 + | +LL | / match Ok::<&str, &str>("Alice") { +LL | | +LL | | Ok(s) => s, +LL | | Err(s) => "Bob", +LL | | }; + | |_____^ help: replace with: `Ok::<&str, &str>("Alice").unwrap_or("Bob")` + error: this pattern reimplements `Result::unwrap_or` --> tests/ui/manual_unwrap_or.rs:225:5 | @@ -184,5 +190,16 @@ LL | | None => 0, LL | | }; | |_________^ help: replace with: `some_macro!().unwrap_or(0)` -error: aborting due to 16 previous errors +error: this pattern reimplements `Option::unwrap_or` + --> tests/ui/manual_unwrap_or.rs:324:5 + | +LL | / if let Some(x) = Some(42) { +LL | | +LL | | x +LL | | } else { +LL | | 0 +LL | | } + | |_____^ help: replace with: `Some(42).unwrap_or(0)` + +error: aborting due to 18 previous errors diff --git a/tests/ui/manual_unwrap_or_default.fixed b/tests/ui/manual_unwrap_or_default.fixed index 832376fa5af15..9dae9fcae079b 100644 --- a/tests/ui/manual_unwrap_or_default.fixed +++ b/tests/ui/manual_unwrap_or_default.fixed @@ -1,5 +1,5 @@ #![warn(clippy::manual_unwrap_or_default)] -#![allow(clippy::unnecessary_literal_unwrap, clippy::manual_unwrap_or)] +#![allow(clippy::unnecessary_literal_unwrap)] fn main() { let x: Option> = None; @@ -36,10 +36,12 @@ fn main() { // Issue #12531 unsafe fn no_deref_ptr(a: Option, b: *const Option) -> i32 { - match a { - // `*b` being correct depends on `a == Some(_)` - Some(_) => (*b).unwrap_or_default(), - _ => 0, + unsafe { + match a { + // `*b` being correct depends on `a == Some(_)` + Some(_) => (*b).unwrap_or_default(), + _ => 0, + } } } @@ -99,3 +101,8 @@ fn issue_12928() { let y = if let Some(Y(a, _)) = x { a } else { 0 }; let y = if let Some(Y(a, ..)) = x { a } else { 0 }; } + +// For symetry with `manual_unwrap_or` test +fn allowed_manual_unwrap_or_zero() -> u32 { + Some(42).unwrap_or_default() +} diff --git a/tests/ui/manual_unwrap_or_default.rs b/tests/ui/manual_unwrap_or_default.rs index bedb3f0af0f3e..539d7a8bbae59 100644 --- a/tests/ui/manual_unwrap_or_default.rs +++ b/tests/ui/manual_unwrap_or_default.rs @@ -1,5 +1,5 @@ #![warn(clippy::manual_unwrap_or_default)] -#![allow(clippy::unnecessary_literal_unwrap, clippy::manual_unwrap_or)] +#![allow(clippy::unnecessary_literal_unwrap)] fn main() { let x: Option> = None; @@ -68,14 +68,16 @@ fn main() { // Issue #12531 unsafe fn no_deref_ptr(a: Option, b: *const Option) -> i32 { - match a { - // `*b` being correct depends on `a == Some(_)` - Some(_) => match *b { - //~^ manual_unwrap_or_default - Some(v) => v, + unsafe { + match a { + // `*b` being correct depends on `a == Some(_)` + Some(_) => match *b { + //~^ manual_unwrap_or_default + Some(v) => v, + _ => 0, + }, _ => 0, - }, - _ => 0, + } } } @@ -135,3 +137,13 @@ fn issue_12928() { let y = if let Some(Y(a, _)) = x { a } else { 0 }; let y = if let Some(Y(a, ..)) = x { a } else { 0 }; } + +// For symetry with `manual_unwrap_or` test +fn allowed_manual_unwrap_or_zero() -> u32 { + if let Some(x) = Some(42) { + //~^ manual_unwrap_or_default + x + } else { + 0 + } +} diff --git a/tests/ui/manual_unwrap_or_default.stderr b/tests/ui/manual_unwrap_or_default.stderr index ca9aa159152e3..e8f38a2e3899e 100644 --- a/tests/ui/manual_unwrap_or_default.stderr +++ b/tests/ui/manual_unwrap_or_default.stderr @@ -76,15 +76,26 @@ LL | | }; | |_____^ help: replace it with: `x.unwrap_or_default()` error: match can be simplified with `.unwrap_or_default()` - --> tests/ui/manual_unwrap_or_default.rs:73:20 + --> tests/ui/manual_unwrap_or_default.rs:74:24 | -LL | Some(_) => match *b { - | ____________________^ +LL | Some(_) => match *b { + | ________________________^ LL | | -LL | | Some(v) => v, -LL | | _ => 0, -LL | | }, - | |_________^ help: replace it with: `(*b).unwrap_or_default()` +LL | | Some(v) => v, +LL | | _ => 0, +LL | | }, + | |_____________^ help: replace it with: `(*b).unwrap_or_default()` -error: aborting due to 8 previous errors +error: if let can be simplified with `.unwrap_or_default()` + --> tests/ui/manual_unwrap_or_default.rs:143:5 + | +LL | / if let Some(x) = Some(42) { +LL | | +LL | | x +LL | | } else { +LL | | 0 +LL | | } + | |_____^ help: replace it with: `Some(42).unwrap_or_default()` + +error: aborting due to 9 previous errors diff --git a/tests/ui/map_flatten_fixable.fixed b/tests/ui/map_flatten_fixable.fixed index 948fec970d869..f8379ed23c5b2 100644 --- a/tests/ui/map_flatten_fixable.fixed +++ b/tests/ui/map_flatten_fixable.fixed @@ -1,10 +1,11 @@ -#![warn(clippy::all, clippy::pedantic)] -#![allow(clippy::let_underscore_untyped)] -#![allow(clippy::missing_docs_in_private_items)] -#![allow(clippy::map_identity)] -#![allow(clippy::redundant_closure)] -#![allow(clippy::unnecessary_wraps)] #![feature(result_flattening)] +#![allow( + clippy::let_underscore_untyped, + clippy::missing_docs_in_private_items, + clippy::map_identity, + clippy::redundant_closure, + clippy::unnecessary_wraps +)] fn main() { // mapping to Option on Iterator diff --git a/tests/ui/map_flatten_fixable.rs b/tests/ui/map_flatten_fixable.rs index 67a91ab94147e..040a9ca85f647 100644 --- a/tests/ui/map_flatten_fixable.rs +++ b/tests/ui/map_flatten_fixable.rs @@ -1,10 +1,11 @@ -#![warn(clippy::all, clippy::pedantic)] -#![allow(clippy::let_underscore_untyped)] -#![allow(clippy::missing_docs_in_private_items)] -#![allow(clippy::map_identity)] -#![allow(clippy::redundant_closure)] -#![allow(clippy::unnecessary_wraps)] #![feature(result_flattening)] +#![allow( + clippy::let_underscore_untyped, + clippy::missing_docs_in_private_items, + clippy::map_identity, + clippy::redundant_closure, + clippy::unnecessary_wraps +)] fn main() { // mapping to Option on Iterator diff --git a/tests/ui/map_flatten_fixable.stderr b/tests/ui/map_flatten_fixable.stderr index 05d4d9a6ad85c..fe68eb7e4ab44 100644 --- a/tests/ui/map_flatten_fixable.stderr +++ b/tests/ui/map_flatten_fixable.stderr @@ -1,5 +1,5 @@ error: called `map(..).flatten()` on `Iterator` - --> tests/ui/map_flatten_fixable.rs:16:47 + --> tests/ui/map_flatten_fixable.rs:17:47 | LL | let _: Vec<_> = vec![5_i8; 6].into_iter().map(option_id).flatten().collect(); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try replacing `map` with `filter_map` and remove the `.flatten()`: `filter_map(option_id)` @@ -8,43 +8,43 @@ LL | let _: Vec<_> = vec![5_i8; 6].into_iter().map(option_id).flatten().coll = help: to override `-D warnings` add `#[allow(clippy::map_flatten)]` error: called `map(..).flatten()` on `Iterator` - --> tests/ui/map_flatten_fixable.rs:18:47 + --> tests/ui/map_flatten_fixable.rs:19:47 | LL | let _: Vec<_> = vec![5_i8; 6].into_iter().map(option_id_ref).flatten().collect(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try replacing `map` with `filter_map` and remove the `.flatten()`: `filter_map(option_id_ref)` error: called `map(..).flatten()` on `Iterator` - --> tests/ui/map_flatten_fixable.rs:20:47 + --> tests/ui/map_flatten_fixable.rs:21:47 | LL | let _: Vec<_> = vec![5_i8; 6].into_iter().map(option_id_closure).flatten().collect(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try replacing `map` with `filter_map` and remove the `.flatten()`: `filter_map(option_id_closure)` error: called `map(..).flatten()` on `Iterator` - --> tests/ui/map_flatten_fixable.rs:22:47 + --> tests/ui/map_flatten_fixable.rs:23:47 | LL | let _: Vec<_> = vec![5_i8; 6].into_iter().map(|x| x.checked_add(1)).flatten().collect(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try replacing `map` with `filter_map` and remove the `.flatten()`: `filter_map(|x| x.checked_add(1))` error: called `map(..).flatten()` on `Iterator` - --> tests/ui/map_flatten_fixable.rs:26:47 + --> tests/ui/map_flatten_fixable.rs:27:47 | LL | let _: Vec<_> = vec![5_i8; 6].into_iter().map(|x| 0..x).flatten().collect(); | ^^^^^^^^^^^^^^^^^^^^^^^ help: try replacing `map` with `flat_map` and remove the `.flatten()`: `flat_map(|x| 0..x)` error: called `map(..).flatten()` on `Option` - --> tests/ui/map_flatten_fixable.rs:30:40 + --> tests/ui/map_flatten_fixable.rs:31:40 | LL | let _: Option<_> = (Some(Some(1))).map(|x| x).flatten(); | ^^^^^^^^^^^^^^^^^^^^ help: try replacing `map` with `and_then` and remove the `.flatten()`: `and_then(|x| x)` error: called `map(..).flatten()` on `Result` - --> tests/ui/map_flatten_fixable.rs:34:42 + --> tests/ui/map_flatten_fixable.rs:35:42 | LL | let _: Result<_, &str> = (Ok(Ok(1))).map(|x| x).flatten(); | ^^^^^^^^^^^^^^^^^^^^ help: try replacing `map` with `and_then` and remove the `.flatten()`: `and_then(|x| x)` error: called `map(..).flatten()` on `Iterator` - --> tests/ui/map_flatten_fixable.rs:44:10 + --> tests/ui/map_flatten_fixable.rs:45:10 | LL | .map(|n| match n { | __________^ @@ -74,7 +74,7 @@ LL ~ }); | error: called `map(..).flatten()` on `Option` - --> tests/ui/map_flatten_fixable.rs:65:10 + --> tests/ui/map_flatten_fixable.rs:66:10 | LL | .map(|_| { | __________^ diff --git a/tests/ui/match_on_vec_items.rs b/tests/ui/match_on_vec_items.rs deleted file mode 100644 index f3174ec9734df..0000000000000 --- a/tests/ui/match_on_vec_items.rs +++ /dev/null @@ -1,161 +0,0 @@ -#![warn(clippy::match_on_vec_items)] -#![allow(clippy::redundant_at_rest_pattern, clippy::useless_vec)] -//@no-rustfix -fn match_with_wildcard() { - let arr = vec![0, 1, 2, 3]; - let range = 1..3; - let idx = 1; - - // Lint, may panic - match arr[idx] { - //~^ match_on_vec_items - 0 => println!("0"), - 1 => println!("1"), - _ => {}, - } - - // Lint, may panic - match arr[range] { - //~^ match_on_vec_items - [0, 1] => println!("0 1"), - [1, 2] => println!("1 2"), - _ => {}, - } -} - -fn match_without_wildcard() { - let arr = vec![0, 1, 2, 3]; - let range = 1..3; - let idx = 2; - - // Lint, may panic - match arr[idx] { - //~^ match_on_vec_items - 0 => println!("0"), - 1 => println!("1"), - num => {}, - } - - // Lint, may panic - match arr[range] { - //~^ match_on_vec_items - [0, 1] => println!("0 1"), - [1, 2] => println!("1 2"), - [ref sub @ ..] => {}, - } -} - -fn match_wildcard_and_action() { - let arr = vec![0, 1, 2, 3]; - let range = 1..3; - let idx = 3; - - // Lint, may panic - match arr[idx] { - //~^ match_on_vec_items - 0 => println!("0"), - 1 => println!("1"), - _ => println!("Hello, World!"), - } - - // Lint, may panic - match arr[range] { - //~^ match_on_vec_items - [0, 1] => println!("0 1"), - [1, 2] => println!("1 2"), - _ => println!("Hello, World!"), - } -} - -fn match_vec_ref() { - let arr = &vec![0, 1, 2, 3]; - let range = 1..3; - let idx = 3; - - // Lint, may panic - match arr[idx] { - //~^ match_on_vec_items - 0 => println!("0"), - 1 => println!("1"), - _ => {}, - } - - // Lint, may panic - match arr[range] { - //~^ match_on_vec_items - [0, 1] => println!("0 1"), - [1, 2] => println!("1 2"), - _ => {}, - } -} - -fn match_with_get() { - let arr = vec![0, 1, 2, 3]; - let range = 1..3; - let idx = 3; - - // Ok - match arr.get(idx) { - Some(0) => println!("0"), - Some(1) => println!("1"), - _ => {}, - } - - // Ok - match arr.get(range) { - Some(&[0, 1]) => println!("0 1"), - Some(&[1, 2]) => println!("1 2"), - _ => {}, - } -} - -fn match_with_array() { - let arr = [0, 1, 2, 3]; - let range = 1..3; - let idx = 3; - - // Ok - match arr[idx] { - 0 => println!("0"), - 1 => println!("1"), - _ => {}, - } - - // Ok - match arr[range] { - [0, 1] => println!("0 1"), - [1, 2] => println!("1 2"), - _ => {}, - } -} - -fn match_with_endless_range() { - let arr = vec![0, 1, 2, 3]; - let range = ..; - - // Ok - match arr[range] { - [0, 1] => println!("0 1"), - [1, 2] => println!("1 2"), - [0, 1, 2, 3] => println!("0, 1, 2, 3"), - _ => {}, - } - - // Ok - match arr[..] { - [0, 1] => println!("0 1"), - [1, 2] => println!("1 2"), - [0, 1, 2, 3] => println!("0, 1, 2, 3"), - _ => {}, - } -} - -fn main() { - match_with_wildcard(); - match_without_wildcard(); - match_wildcard_and_action(); - match_vec_ref(); - match_with_get(); - match_with_array(); - match_with_endless_range(); -} diff --git a/tests/ui/match_on_vec_items.stderr b/tests/ui/match_on_vec_items.stderr deleted file mode 100644 index ae79e1305f7fd..0000000000000 --- a/tests/ui/match_on_vec_items.stderr +++ /dev/null @@ -1,53 +0,0 @@ -error: indexing into a vector may panic - --> tests/ui/match_on_vec_items.rs:10:11 - | -LL | match arr[idx] { - | ^^^^^^^^ help: try: `arr.get(idx)` - | - = note: `-D clippy::match-on-vec-items` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::match_on_vec_items)]` - -error: indexing into a vector may panic - --> tests/ui/match_on_vec_items.rs:18:11 - | -LL | match arr[range] { - | ^^^^^^^^^^ help: try: `arr.get(range)` - -error: indexing into a vector may panic - --> tests/ui/match_on_vec_items.rs:32:11 - | -LL | match arr[idx] { - | ^^^^^^^^ help: try: `arr.get(idx)` - -error: indexing into a vector may panic - --> tests/ui/match_on_vec_items.rs:40:11 - | -LL | match arr[range] { - | ^^^^^^^^^^ help: try: `arr.get(range)` - -error: indexing into a vector may panic - --> tests/ui/match_on_vec_items.rs:54:11 - | -LL | match arr[idx] { - | ^^^^^^^^ help: try: `arr.get(idx)` - -error: indexing into a vector may panic - --> tests/ui/match_on_vec_items.rs:62:11 - | -LL | match arr[range] { - | ^^^^^^^^^^ help: try: `arr.get(range)` - -error: indexing into a vector may panic - --> tests/ui/match_on_vec_items.rs:76:11 - | -LL | match arr[idx] { - | ^^^^^^^^ help: try: `arr.get(idx)` - -error: indexing into a vector may panic - --> tests/ui/match_on_vec_items.rs:84:11 - | -LL | match arr[range] { - | ^^^^^^^^^^ help: try: `arr.get(range)` - -error: aborting due to 8 previous errors - diff --git a/tests/ui/match_single_binding.fixed b/tests/ui/match_single_binding.fixed index 3a3eee4c958b4..bdf39796ebfcb 100644 --- a/tests/ui/match_single_binding.fixed +++ b/tests/ui/match_single_binding.fixed @@ -171,3 +171,20 @@ fn issue_10447() -> usize { 2 } + +fn issue14634() { + macro_rules! id { + ($i:ident) => { + $i + }; + } + dbg!(3); + println!("here"); + //~^^^ match_single_binding + let id!(a) = dbg!(3); + println!("found {a}"); + //~^^^ match_single_binding + let id!(b) = dbg!(3); + let id!(_a) = dbg!(b + 1); + //~^^^ match_single_binding +} diff --git a/tests/ui/match_single_binding.rs b/tests/ui/match_single_binding.rs index ada51254c6cdf..419ff95d873b0 100644 --- a/tests/ui/match_single_binding.rs +++ b/tests/ui/match_single_binding.rs @@ -229,3 +229,23 @@ fn issue_10447() -> usize { 2 } + +fn issue14634() { + macro_rules! id { + ($i:ident) => { + $i + }; + } + match dbg!(3) { + _ => println!("here"), + } + //~^^^ match_single_binding + match dbg!(3) { + id!(a) => println!("found {a}"), + } + //~^^^ match_single_binding + let id!(_a) = match dbg!(3) { + id!(b) => dbg!(b + 1), + }; + //~^^^ match_single_binding +} diff --git a/tests/ui/match_single_binding.stderr b/tests/ui/match_single_binding.stderr index 7e1ec32dac2ff..bdd0134a5f1c9 100644 --- a/tests/ui/match_single_binding.stderr +++ b/tests/ui/match_single_binding.stderr @@ -336,5 +336,47 @@ LL | | _ => println!("1"), LL | | }, | |_________^ help: consider using the match body instead: `println!("1")` -error: aborting due to 24 previous errors +error: this match could be replaced by its scrutinee and body + --> tests/ui/match_single_binding.rs:239:5 + | +LL | / match dbg!(3) { +LL | | _ => println!("here"), +LL | | } + | |_____^ + | +help: consider using the scrutinee and body instead + | +LL ~ dbg!(3); +LL + println!("here"); + | + +error: this match could be written as a `let` statement + --> tests/ui/match_single_binding.rs:243:5 + | +LL | / match dbg!(3) { +LL | | id!(a) => println!("found {a}"), +LL | | } + | |_____^ + | +help: consider using a `let` statement + | +LL ~ let id!(a) = dbg!(3); +LL + println!("found {a}"); + | + +error: this match could be written as a `let` statement + --> tests/ui/match_single_binding.rs:247:5 + | +LL | / let id!(_a) = match dbg!(3) { +LL | | id!(b) => dbg!(b + 1), +LL | | }; + | |______^ + | +help: consider using a `let` statement + | +LL ~ let id!(b) = dbg!(3); +LL + let id!(_a) = dbg!(b + 1); + | + +error: aborting due to 27 previous errors diff --git a/tests/ui/methods.rs b/tests/ui/methods.rs index 76b0d131dd41d..2f4004181f6a8 100644 --- a/tests/ui/methods.rs +++ b/tests/ui/methods.rs @@ -1,6 +1,5 @@ //@aux-build:option_helpers.rs -#![warn(clippy::all, clippy::pedantic)] #![allow( clippy::disallowed_names, clippy::default_trait_access, @@ -19,8 +18,7 @@ clippy::wrong_self_convention, clippy::unused_async, clippy::unused_self, - clippy::useless_vec, - unused + clippy::useless_vec )] #[macro_use] diff --git a/tests/ui/methods.stderr b/tests/ui/methods.stderr index 353b999d7da0f..b226ce7c65dab 100644 --- a/tests/ui/methods.stderr +++ b/tests/ui/methods.stderr @@ -1,5 +1,5 @@ error: methods called `new` usually return `Self` - --> tests/ui/methods.rs:104:5 + --> tests/ui/methods.rs:102:5 | LL | / fn new() -> i32 { LL | | @@ -11,7 +11,7 @@ LL | | } = help: to override `-D warnings` add `#[allow(clippy::new_ret_no_self)]` error: called `filter(..).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(..)` instead - --> tests/ui/methods.rs:126:13 + --> tests/ui/methods.rs:124:13 | LL | let _ = v.iter().filter(|&x| { | _____________^ diff --git a/tests/ui/min_max.rs b/tests/ui/min_max.rs index f3eeb85f20ed6..ee19d3ff71421 100644 --- a/tests/ui/min_max.rs +++ b/tests/ui/min_max.rs @@ -1,4 +1,3 @@ -#![warn(clippy::all)] #![allow(clippy::manual_clamp)] use std::cmp::{max as my_max, max, min as my_min, min}; diff --git a/tests/ui/min_max.stderr b/tests/ui/min_max.stderr index 84b4d37545529..87510a465a08b 100644 --- a/tests/ui/min_max.stderr +++ b/tests/ui/min_max.stderr @@ -1,80 +1,79 @@ error: this `min`/`max` combination leads to constant result - --> tests/ui/min_max.rs:22:5 + --> tests/ui/min_max.rs:21:5 | LL | min(1, max(3, x)); | ^^^^^^^^^^^^^^^^^ | - = note: `-D clippy::min-max` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::min_max)]` + = note: `#[deny(clippy::min_max)]` on by default error: this `min`/`max` combination leads to constant result - --> tests/ui/min_max.rs:25:5 + --> tests/ui/min_max.rs:24:5 | LL | min(max(3, x), 1); | ^^^^^^^^^^^^^^^^^ error: this `min`/`max` combination leads to constant result - --> tests/ui/min_max.rs:28:5 + --> tests/ui/min_max.rs:27:5 | LL | max(min(x, 1), 3); | ^^^^^^^^^^^^^^^^^ error: this `min`/`max` combination leads to constant result - --> tests/ui/min_max.rs:31:5 + --> tests/ui/min_max.rs:30:5 | LL | max(3, min(x, 1)); | ^^^^^^^^^^^^^^^^^ error: this `min`/`max` combination leads to constant result - --> tests/ui/min_max.rs:34:5 + --> tests/ui/min_max.rs:33:5 | LL | my_max(3, my_min(x, 1)); | ^^^^^^^^^^^^^^^^^^^^^^^ error: this `min`/`max` combination leads to constant result - --> tests/ui/min_max.rs:45:5 + --> tests/ui/min_max.rs:44:5 | LL | min("Apple", max("Zoo", s)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: this `min`/`max` combination leads to constant result - --> tests/ui/min_max.rs:48:5 + --> tests/ui/min_max.rs:47:5 | LL | max(min(s, "Apple"), "Zoo"); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: this `min`/`max` combination leads to constant result - --> tests/ui/min_max.rs:54:5 + --> tests/ui/min_max.rs:53:5 | LL | x.min(1).max(3); | ^^^^^^^^^^^^^^^ error: this `min`/`max` combination leads to constant result - --> tests/ui/min_max.rs:57:5 + --> tests/ui/min_max.rs:56:5 | LL | x.max(3).min(1); | ^^^^^^^^^^^^^^^ error: this `min`/`max` combination leads to constant result - --> tests/ui/min_max.rs:60:5 + --> tests/ui/min_max.rs:59:5 | LL | f.max(3f32).min(1f32); | ^^^^^^^^^^^^^^^^^^^^^ error: this `min`/`max` combination leads to constant result - --> tests/ui/min_max.rs:67:5 + --> tests/ui/min_max.rs:66:5 | LL | max(x.min(1), 3); | ^^^^^^^^^^^^^^^^ error: this `min`/`max` combination leads to constant result - --> tests/ui/min_max.rs:72:5 + --> tests/ui/min_max.rs:71:5 | LL | s.max("Zoo").min("Apple"); | ^^^^^^^^^^^^^^^^^^^^^^^^^ error: this `min`/`max` combination leads to constant result - --> tests/ui/min_max.rs:75:5 + --> tests/ui/min_max.rs:74:5 | LL | s.min("Apple").max("Zoo"); | ^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/misnamed_getters.fixed b/tests/ui/misnamed_getters.fixed index cada5307b1c8e..bc123d1a40ba2 100644 --- a/tests/ui/misnamed_getters.fixed +++ b/tests/ui/misnamed_getters.fixed @@ -54,63 +54,63 @@ impl B { unsafe fn a(&self) -> &u8 { //~^ misnamed_getters - &self.a + unsafe { &self.a } } unsafe fn a_mut(&mut self) -> &mut u8 { //~^ misnamed_getters - &mut self.a + unsafe { &mut self.a } } unsafe fn b(self) -> u8 { //~^ misnamed_getters - self.b + unsafe { self.b } } unsafe fn b_mut(&mut self) -> &mut u8 { //~^ misnamed_getters - &mut self.b + unsafe { &mut self.b } } unsafe fn c(&self) -> &u8 { - &self.b + unsafe { &self.b } } unsafe fn c_mut(&mut self) -> &mut u8 { - &mut self.a + unsafe { &mut self.a } } unsafe fn a_unchecked(&self) -> &u8 { //~^ misnamed_getters - &self.a + unsafe { &self.a } } unsafe fn a_unchecked_mut(&mut self) -> &mut u8 { //~^ misnamed_getters - &mut self.a + unsafe { &mut self.a } } unsafe fn b_unchecked(self) -> u8 { //~^ misnamed_getters - self.b + unsafe { self.b } } unsafe fn b_unchecked_mut(&mut self) -> &mut u8 { //~^ misnamed_getters - &mut self.b + unsafe { &mut self.b } } unsafe fn c_unchecked(&self) -> &u8 { - &self.b + unsafe { &self.b } } unsafe fn c_unchecked_mut(&mut self) -> &mut u8 { - &mut self.a + unsafe { &mut self.a } } } diff --git a/tests/ui/misnamed_getters.rs b/tests/ui/misnamed_getters.rs index f529c56b4717b..6590101157c3f 100644 --- a/tests/ui/misnamed_getters.rs +++ b/tests/ui/misnamed_getters.rs @@ -54,63 +54,63 @@ impl B { unsafe fn a(&self) -> &u8 { //~^ misnamed_getters - &self.b + unsafe { &self.b } } unsafe fn a_mut(&mut self) -> &mut u8 { //~^ misnamed_getters - &mut self.b + unsafe { &mut self.b } } unsafe fn b(self) -> u8 { //~^ misnamed_getters - self.a + unsafe { self.a } } unsafe fn b_mut(&mut self) -> &mut u8 { //~^ misnamed_getters - &mut self.a + unsafe { &mut self.a } } unsafe fn c(&self) -> &u8 { - &self.b + unsafe { &self.b } } unsafe fn c_mut(&mut self) -> &mut u8 { - &mut self.a + unsafe { &mut self.a } } unsafe fn a_unchecked(&self) -> &u8 { //~^ misnamed_getters - &self.b + unsafe { &self.b } } unsafe fn a_unchecked_mut(&mut self) -> &mut u8 { //~^ misnamed_getters - &mut self.b + unsafe { &mut self.b } } unsafe fn b_unchecked(self) -> u8 { //~^ misnamed_getters - self.a + unsafe { self.a } } unsafe fn b_unchecked_mut(&mut self) -> &mut u8 { //~^ misnamed_getters - &mut self.a + unsafe { &mut self.a } } unsafe fn c_unchecked(&self) -> &u8 { - &self.b + unsafe { &self.b } } unsafe fn c_unchecked_mut(&mut self) -> &mut u8 { - &mut self.a + unsafe { &mut self.a } } } diff --git a/tests/ui/misnamed_getters.stderr b/tests/ui/misnamed_getters.stderr index 5dd1d75bcf6f1..aaf21cecb9255 100644 --- a/tests/ui/misnamed_getters.stderr +++ b/tests/ui/misnamed_getters.stderr @@ -73,8 +73,8 @@ error: getter function appears to return the wrong field LL | / unsafe fn a(&self) -> &u8 { LL | | LL | | -LL | | &self.b - | | ------- help: consider using: `&self.a` +LL | | unsafe { &self.b } + | | ------- help: consider using: `&self.a` LL | | } | |_____^ @@ -84,8 +84,8 @@ error: getter function appears to return the wrong field LL | / unsafe fn a_mut(&mut self) -> &mut u8 { LL | | LL | | -LL | | &mut self.b - | | ----------- help: consider using: `&mut self.a` +LL | | unsafe { &mut self.b } + | | ----------- help: consider using: `&mut self.a` LL | | } | |_____^ @@ -95,8 +95,8 @@ error: getter function appears to return the wrong field LL | / unsafe fn b(self) -> u8 { LL | | LL | | -LL | | self.a - | | ------ help: consider using: `self.b` +LL | | unsafe { self.a } + | | ------ help: consider using: `self.b` LL | | } | |_____^ @@ -106,8 +106,8 @@ error: getter function appears to return the wrong field LL | / unsafe fn b_mut(&mut self) -> &mut u8 { LL | | LL | | -LL | | &mut self.a - | | ----------- help: consider using: `&mut self.b` +LL | | unsafe { &mut self.a } + | | ----------- help: consider using: `&mut self.b` LL | | } | |_____^ @@ -117,8 +117,8 @@ error: getter function appears to return the wrong field LL | / unsafe fn a_unchecked(&self) -> &u8 { LL | | LL | | -LL | | &self.b - | | ------- help: consider using: `&self.a` +LL | | unsafe { &self.b } + | | ------- help: consider using: `&self.a` LL | | } | |_____^ @@ -128,8 +128,8 @@ error: getter function appears to return the wrong field LL | / unsafe fn a_unchecked_mut(&mut self) -> &mut u8 { LL | | LL | | -LL | | &mut self.b - | | ----------- help: consider using: `&mut self.a` +LL | | unsafe { &mut self.b } + | | ----------- help: consider using: `&mut self.a` LL | | } | |_____^ @@ -139,8 +139,8 @@ error: getter function appears to return the wrong field LL | / unsafe fn b_unchecked(self) -> u8 { LL | | LL | | -LL | | self.a - | | ------ help: consider using: `self.b` +LL | | unsafe { self.a } + | | ------ help: consider using: `self.b` LL | | } | |_____^ @@ -150,8 +150,8 @@ error: getter function appears to return the wrong field LL | / unsafe fn b_unchecked_mut(&mut self) -> &mut u8 { LL | | LL | | -LL | | &mut self.a - | | ----------- help: consider using: `&mut self.b` +LL | | unsafe { &mut self.a } + | | ----------- help: consider using: `&mut self.b` LL | | } | |_____^ diff --git a/tests/ui/misnamed_getters_2021.fixed b/tests/ui/misnamed_getters_2021.fixed new file mode 100644 index 0000000000000..7112719a9f284 --- /dev/null +++ b/tests/ui/misnamed_getters_2021.fixed @@ -0,0 +1,24 @@ +//@edition: 2021 +#![allow(unused)] +#![allow(clippy::struct_field_names)] +#![warn(clippy::misnamed_getters)] + +// Edition 2021 specific check, where `unsafe` blocks are not required +// inside `unsafe fn`. + +union B { + a: u8, + b: u8, +} + +impl B { + unsafe fn a(&self) -> &u8 { + //~^ misnamed_getters + + &self.a + } +} + +fn main() { + // test code goes here +} diff --git a/tests/ui/misnamed_getters_2021.rs b/tests/ui/misnamed_getters_2021.rs new file mode 100644 index 0000000000000..19b5d086041f4 --- /dev/null +++ b/tests/ui/misnamed_getters_2021.rs @@ -0,0 +1,24 @@ +//@edition: 2021 +#![allow(unused)] +#![allow(clippy::struct_field_names)] +#![warn(clippy::misnamed_getters)] + +// Edition 2021 specific check, where `unsafe` blocks are not required +// inside `unsafe fn`. + +union B { + a: u8, + b: u8, +} + +impl B { + unsafe fn a(&self) -> &u8 { + //~^ misnamed_getters + + &self.b + } +} + +fn main() { + // test code goes here +} diff --git a/tests/ui/misnamed_getters_2021.stderr b/tests/ui/misnamed_getters_2021.stderr new file mode 100644 index 0000000000000..5495e2e3733f0 --- /dev/null +++ b/tests/ui/misnamed_getters_2021.stderr @@ -0,0 +1,16 @@ +error: getter function appears to return the wrong field + --> tests/ui/misnamed_getters_2021.rs:15:5 + | +LL | / unsafe fn a(&self) -> &u8 { +LL | | +LL | | +LL | | &self.b + | | ------- help: consider using: `&self.a` +LL | | } + | |_____^ + | + = note: `-D clippy::misnamed-getters` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::misnamed_getters)]` + +error: aborting due to 1 previous error + diff --git a/tests/ui/missing_asserts_for_indexing.fixed b/tests/ui/missing_asserts_for_indexing.fixed index 3bbafe0bba3fe..9018f38100efd 100644 --- a/tests/ui/missing_asserts_for_indexing.fixed +++ b/tests/ui/missing_asserts_for_indexing.fixed @@ -139,4 +139,31 @@ fn issue11835(v1: &[u8], v2: &[u8], v3: &[u8], v4: &[u8]) { let _ = v4[0] + v4[1] + v4[2]; } +// ok +fn same_index_multiple_times(v1: &[u8]) { + let _ = v1[0] + v1[0]; +} + +// ok +fn highest_index_first(v1: &[u8]) { + let _ = v1[2] + v1[1] + v1[0]; +} + +fn issue14255(v1: &[u8], v2: &[u8], v3: &[u8], v4: &[u8]) { + assert!(v1.len() == 3); + assert_eq!(v2.len(), 4); + assert!(v3.len() == 3); + assert_eq!(4, v4.len()); + + let _ = v1[0] + v1[1] + v1[2]; + //~^ missing_asserts_for_indexing + + let _ = v2[0] + v2[1] + v2[2]; + + let _ = v3[0] + v3[1] + v3[2]; + //~^ missing_asserts_for_indexing + + let _ = v4[0] + v4[1] + v4[2]; +} + fn main() {} diff --git a/tests/ui/missing_asserts_for_indexing.rs b/tests/ui/missing_asserts_for_indexing.rs index f8ea0173c13fc..44c5eddf3d8b9 100644 --- a/tests/ui/missing_asserts_for_indexing.rs +++ b/tests/ui/missing_asserts_for_indexing.rs @@ -139,4 +139,31 @@ fn issue11835(v1: &[u8], v2: &[u8], v3: &[u8], v4: &[u8]) { let _ = v4[0] + v4[1] + v4[2]; } +// ok +fn same_index_multiple_times(v1: &[u8]) { + let _ = v1[0] + v1[0]; +} + +// ok +fn highest_index_first(v1: &[u8]) { + let _ = v1[2] + v1[1] + v1[0]; +} + +fn issue14255(v1: &[u8], v2: &[u8], v3: &[u8], v4: &[u8]) { + assert_eq!(v1.len(), 2); + assert_eq!(v2.len(), 4); + assert_eq!(2, v3.len()); + assert_eq!(4, v4.len()); + + let _ = v1[0] + v1[1] + v1[2]; + //~^ missing_asserts_for_indexing + + let _ = v2[0] + v2[1] + v2[2]; + + let _ = v3[0] + v3[1] + v3[2]; + //~^ missing_asserts_for_indexing + + let _ = v4[0] + v4[1] + v4[2]; +} + fn main() {} diff --git a/tests/ui/missing_asserts_for_indexing.stderr b/tests/ui/missing_asserts_for_indexing.stderr index 5d30920ccf521..b610de94b5308 100644 --- a/tests/ui/missing_asserts_for_indexing.stderr +++ b/tests/ui/missing_asserts_for_indexing.stderr @@ -301,5 +301,57 @@ LL | let _ = v3[0] + v3[1] + v3[2]; | ^^^^^ = note: asserting the length before indexing will elide bounds checks -error: aborting due to 11 previous errors +error: indexing into a slice multiple times with an `assert` that does not cover the highest index + --> tests/ui/missing_asserts_for_indexing.rs:158:13 + | +LL | assert_eq!(v1.len(), 2); + | ----------------------- help: provide the highest index that is indexed with: `assert!(v1.len() == 3)` +... +LL | let _ = v1[0] + v1[1] + v1[2]; + | ^^^^^^^^^^^^^^^^^^^^^ + | +note: slice indexed here + --> tests/ui/missing_asserts_for_indexing.rs:158:13 + | +LL | let _ = v1[0] + v1[1] + v1[2]; + | ^^^^^ +note: slice indexed here + --> tests/ui/missing_asserts_for_indexing.rs:158:21 + | +LL | let _ = v1[0] + v1[1] + v1[2]; + | ^^^^^ +note: slice indexed here + --> tests/ui/missing_asserts_for_indexing.rs:158:29 + | +LL | let _ = v1[0] + v1[1] + v1[2]; + | ^^^^^ + = note: asserting the length before indexing will elide bounds checks + +error: indexing into a slice multiple times with an `assert` that does not cover the highest index + --> tests/ui/missing_asserts_for_indexing.rs:163:13 + | +LL | assert_eq!(2, v3.len()); + | ----------------------- help: provide the highest index that is indexed with: `assert!(v3.len() == 3)` +... +LL | let _ = v3[0] + v3[1] + v3[2]; + | ^^^^^^^^^^^^^^^^^^^^^ + | +note: slice indexed here + --> tests/ui/missing_asserts_for_indexing.rs:163:13 + | +LL | let _ = v3[0] + v3[1] + v3[2]; + | ^^^^^ +note: slice indexed here + --> tests/ui/missing_asserts_for_indexing.rs:163:21 + | +LL | let _ = v3[0] + v3[1] + v3[2]; + | ^^^^^ +note: slice indexed here + --> tests/ui/missing_asserts_for_indexing.rs:163:29 + | +LL | let _ = v3[0] + v3[1] + v3[2]; + | ^^^^^ + = note: asserting the length before indexing will elide bounds checks + +error: aborting due to 13 previous errors diff --git a/tests/ui/missing_asserts_for_indexing_unfixable.rs b/tests/ui/missing_asserts_for_indexing_unfixable.rs index a520151a2dd94..eb98969efa47f 100644 --- a/tests/ui/missing_asserts_for_indexing_unfixable.rs +++ b/tests/ui/missing_asserts_for_indexing_unfixable.rs @@ -73,4 +73,17 @@ pub fn issue11856(values: &[i32]) -> usize { ascending.len() } +fn assert_after_indexing(v1: &[u8]) { + let _ = v1[1] + v1[2]; + //~^ ERROR: indexing into a slice multiple times without an `assert` + assert!(v1.len() > 2); +} + +fn issue14255(v1: &[u8]) { + assert_ne!(v1.len(), 2); + + let _ = v1[0] + v1[1] + v1[2]; + //~^ missing_asserts_for_indexing +} + fn main() {} diff --git a/tests/ui/missing_asserts_for_indexing_unfixable.stderr b/tests/ui/missing_asserts_for_indexing_unfixable.stderr index 24109b052a8af..a17ad02321386 100644 --- a/tests/ui/missing_asserts_for_indexing_unfixable.stderr +++ b/tests/ui/missing_asserts_for_indexing_unfixable.stderr @@ -180,5 +180,48 @@ LL | let _ = x[0] + x[1]; | ^^^^ = note: asserting the length before indexing will elide bounds checks -error: aborting due to 8 previous errors +error: indexing into a slice multiple times without an `assert` + --> tests/ui/missing_asserts_for_indexing_unfixable.rs:77:13 + | +LL | let _ = v1[1] + v1[2]; + | ^^^^^^^^^^^^^ + | + = help: consider asserting the length before indexing: `assert!(v1.len() > 2);` +note: slice indexed here + --> tests/ui/missing_asserts_for_indexing_unfixable.rs:77:13 + | +LL | let _ = v1[1] + v1[2]; + | ^^^^^ +note: slice indexed here + --> tests/ui/missing_asserts_for_indexing_unfixable.rs:77:21 + | +LL | let _ = v1[1] + v1[2]; + | ^^^^^ + = note: asserting the length before indexing will elide bounds checks + +error: indexing into a slice multiple times without an `assert` + --> tests/ui/missing_asserts_for_indexing_unfixable.rs:85:13 + | +LL | let _ = v1[0] + v1[1] + v1[2]; + | ^^^^^^^^^^^^^^^^^^^^^ + | + = help: consider asserting the length before indexing: `assert!(v1.len() > 2);` +note: slice indexed here + --> tests/ui/missing_asserts_for_indexing_unfixable.rs:85:13 + | +LL | let _ = v1[0] + v1[1] + v1[2]; + | ^^^^^ +note: slice indexed here + --> tests/ui/missing_asserts_for_indexing_unfixable.rs:85:21 + | +LL | let _ = v1[0] + v1[1] + v1[2]; + | ^^^^^ +note: slice indexed here + --> tests/ui/missing_asserts_for_indexing_unfixable.rs:85:29 + | +LL | let _ = v1[0] + v1[1] + v1[2]; + | ^^^^^ + = note: asserting the length before indexing will elide bounds checks + +error: aborting due to 10 previous errors diff --git a/tests/ui/missing_const_for_fn/could_be_const.fixed b/tests/ui/missing_const_for_fn/could_be_const.fixed index 10df44e73b85f..65eb2d5938b6b 100644 --- a/tests/ui/missing_const_for_fn/could_be_const.fixed +++ b/tests/ui/missing_const_for_fn/could_be_const.fixed @@ -144,7 +144,7 @@ mod msrv { #[clippy::msrv = "1.62"] mod with_extern { - const extern "C" fn c() {} + const unsafe extern "C" fn c() {} //~^ missing_const_for_fn #[rustfmt::skip] @@ -153,7 +153,7 @@ mod msrv { //~^ missing_const_for_fn // any item functions in extern block won't trigger this lint - extern "C" { + unsafe extern "C" { fn c_in_block(); } } diff --git a/tests/ui/missing_const_for_fn/could_be_const.rs b/tests/ui/missing_const_for_fn/could_be_const.rs index bc44b34daef7e..3690d2f799ff4 100644 --- a/tests/ui/missing_const_for_fn/could_be_const.rs +++ b/tests/ui/missing_const_for_fn/could_be_const.rs @@ -144,7 +144,7 @@ mod msrv { #[clippy::msrv = "1.62"] mod with_extern { - extern "C" fn c() {} + unsafe extern "C" fn c() {} //~^ missing_const_for_fn #[rustfmt::skip] @@ -153,7 +153,7 @@ mod msrv { //~^ missing_const_for_fn // any item functions in extern block won't trigger this lint - extern "C" { + unsafe extern "C" { fn c_in_block(); } } diff --git a/tests/ui/missing_const_for_fn/could_be_const.stderr b/tests/ui/missing_const_for_fn/could_be_const.stderr index 5df5a54ff5216..10e07d12f5a4c 100644 --- a/tests/ui/missing_const_for_fn/could_be_const.stderr +++ b/tests/ui/missing_const_for_fn/could_be_const.stderr @@ -212,12 +212,12 @@ LL | const fn union_access_can_be_const() { error: this could be a `const fn` --> tests/ui/missing_const_for_fn/could_be_const.rs:147:9 | -LL | extern "C" fn c() {} - | ^^^^^^^^^^^^^^^^^^^^ +LL | unsafe extern "C" fn c() {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ | help: make the function `const` | -LL | const extern "C" fn c() {} +LL | const unsafe extern "C" fn c() {} | +++++ error: this could be a `const fn` diff --git a/tests/ui/missing_panics_doc.rs b/tests/ui/missing_panics_doc.rs index 95e361c5d5556..ffdae8504f72e 100644 --- a/tests/ui/missing_panics_doc.rs +++ b/tests/ui/missing_panics_doc.rs @@ -151,6 +151,45 @@ pub fn debug_assertions() { debug_assert_ne!(1, 2); } +pub fn partially_const(n: usize) { + //~^ missing_panics_doc + + const { + assert!(N > 5); + } + + assert!(N > n); +} + +pub fn expect_allow(i: Option) { + #[expect(clippy::missing_panics_doc)] + i.unwrap(); + + #[allow(clippy::missing_panics_doc)] + i.unwrap(); +} + +pub fn expect_allow_with_error(i: Option) { + //~^ missing_panics_doc + + #[expect(clippy::missing_panics_doc)] + i.unwrap(); + + #[allow(clippy::missing_panics_doc)] + i.unwrap(); + + i.unwrap(); +} + +pub fn expect_after_error(x: Option, y: Option) { + //~^ missing_panics_doc + + let x = x.unwrap(); + + #[expect(clippy::missing_panics_doc)] + let y = y.unwrap(); +} + // all function must be triggered the lint. // `pub` is required, because the lint does not consider unreachable items pub mod issue10240 { diff --git a/tests/ui/missing_panics_doc.stderr b/tests/ui/missing_panics_doc.stderr index a83e2fa367dd3..7f0acf8de9b77 100644 --- a/tests/ui/missing_panics_doc.stderr +++ b/tests/ui/missing_panics_doc.stderr @@ -73,76 +73,112 @@ LL | assert_ne!(x, 0); | ^^^^^^^^^^^^^^^^ error: docs for function which may panic missing `# Panics` section - --> tests/ui/missing_panics_doc.rs:157:5 + --> tests/ui/missing_panics_doc.rs:154:1 + | +LL | pub fn partially_const(n: usize) { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: first possible panic found here + --> tests/ui/missing_panics_doc.rs:161:5 + | +LL | assert!(N > n); + | ^^^^^^^^^^^^^^ + +error: docs for function which may panic missing `# Panics` section + --> tests/ui/missing_panics_doc.rs:172:1 + | +LL | pub fn expect_allow_with_error(i: Option) { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: first possible panic found here + --> tests/ui/missing_panics_doc.rs:181:5 + | +LL | i.unwrap(); + | ^^^^^^^^^^ + +error: docs for function which may panic missing `# Panics` section + --> tests/ui/missing_panics_doc.rs:184:1 + | +LL | pub fn expect_after_error(x: Option, y: Option) { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: first possible panic found here + --> tests/ui/missing_panics_doc.rs:187:13 + | +LL | let x = x.unwrap(); + | ^^^^^^^^^^ + +error: docs for function which may panic missing `# Panics` section + --> tests/ui/missing_panics_doc.rs:196:5 | LL | pub fn option_unwrap(v: &[T]) -> &T { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: first possible panic found here - --> tests/ui/missing_panics_doc.rs:160:9 + --> tests/ui/missing_panics_doc.rs:199:9 | LL | o.unwrap() | ^^^^^^^^^^ error: docs for function which may panic missing `# Panics` section - --> tests/ui/missing_panics_doc.rs:163:5 + --> tests/ui/missing_panics_doc.rs:202:5 | LL | pub fn option_expect(v: &[T]) -> &T { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: first possible panic found here - --> tests/ui/missing_panics_doc.rs:166:9 + --> tests/ui/missing_panics_doc.rs:205:9 | LL | o.expect("passed an empty thing") | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: docs for function which may panic missing `# Panics` section - --> tests/ui/missing_panics_doc.rs:169:5 + --> tests/ui/missing_panics_doc.rs:208:5 | LL | pub fn result_unwrap(v: &[T]) -> &T { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: first possible panic found here - --> tests/ui/missing_panics_doc.rs:172:9 + --> tests/ui/missing_panics_doc.rs:211:9 | LL | res.unwrap() | ^^^^^^^^^^^^ error: docs for function which may panic missing `# Panics` section - --> tests/ui/missing_panics_doc.rs:175:5 + --> tests/ui/missing_panics_doc.rs:214:5 | LL | pub fn result_expect(v: &[T]) -> &T { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: first possible panic found here - --> tests/ui/missing_panics_doc.rs:178:9 + --> tests/ui/missing_panics_doc.rs:217:9 | LL | res.expect("passed an empty thing") | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: docs for function which may panic missing `# Panics` section - --> tests/ui/missing_panics_doc.rs:181:5 + --> tests/ui/missing_panics_doc.rs:220:5 | LL | pub fn last_unwrap(v: &[u32]) -> u32 { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: first possible panic found here - --> tests/ui/missing_panics_doc.rs:183:10 + --> tests/ui/missing_panics_doc.rs:222:10 | LL | *v.last().unwrap() | ^^^^^^^^^^^^^^^^^ error: docs for function which may panic missing `# Panics` section - --> tests/ui/missing_panics_doc.rs:186:5 + --> tests/ui/missing_panics_doc.rs:225:5 | LL | pub fn last_expect(v: &[u32]) -> u32 { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: first possible panic found here - --> tests/ui/missing_panics_doc.rs:188:10 + --> tests/ui/missing_panics_doc.rs:227:10 | LL | *v.last().expect("passed an empty thing") | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -error: aborting due to 12 previous errors +error: aborting due to 15 previous errors diff --git a/tests/ui/missing_transmute_annotations.fixed b/tests/ui/missing_transmute_annotations.fixed index a3c94ab139ec6..58faeaee09d46 100644 --- a/tests/ui/missing_transmute_annotations.fixed +++ b/tests/ui/missing_transmute_annotations.fixed @@ -18,8 +18,10 @@ fn bar(x: i32) -> i32 { } unsafe fn foo1() -> i32 { - // Should not warn! - std::mem::transmute([1u16, 2u16]) + unsafe { + // Should not warn! + std::mem::transmute([1u16, 2u16]) + } } // Should not warn! @@ -31,33 +33,35 @@ enum Foo { } unsafe fn foo2() -> i32 { - let mut i: i32 = 0; - i = std::mem::transmute::<[u16; 2], i32>([1u16, 2u16]); - //~^ ERROR: transmute used without annotations - i = std::mem::transmute::<[u16; 2], i32>([1u16, 2u16]); - //~^ ERROR: transmute used without annotations - i = std::mem::transmute::<[u16; 2], i32>([1u16, 2u16]); - //~^ ERROR: transmute used without annotations - i = std::mem::transmute::<[u16; 2], i32>([1u16, 2u16]); - //~^ ERROR: transmute used without annotations + unsafe { + let mut i: i32 = 0; + i = std::mem::transmute::<[u16; 2], i32>([1u16, 2u16]); + //~^ ERROR: transmute used without annotations + i = std::mem::transmute::<[u16; 2], i32>([1u16, 2u16]); + //~^ ERROR: transmute used without annotations + i = std::mem::transmute::<[u16; 2], i32>([1u16, 2u16]); + //~^ ERROR: transmute used without annotations + i = std::mem::transmute::<[u16; 2], i32>([1u16, 2u16]); + //~^ ERROR: transmute used without annotations - let x: i32 = bar(std::mem::transmute::<[u16; 2], i32>([1u16, 2u16])); - //~^ ERROR: transmute used without annotations - bar(std::mem::transmute::<[u16; 2], i32>([1u16, 2u16])); - //~^ ERROR: transmute used without annotations + let x: i32 = bar(std::mem::transmute::<[u16; 2], i32>([1u16, 2u16])); + //~^ ERROR: transmute used without annotations + bar(std::mem::transmute::<[u16; 2], i32>([1u16, 2u16])); + //~^ ERROR: transmute used without annotations - i = local_bad_transmute!([1u16, 2u16]); + i = local_bad_transmute!([1u16, 2u16]); - // Should not warn. - i = bad_transmute!([1u16, 2u16]); + // Should not warn. + i = bad_transmute!([1u16, 2u16]); - i = std::mem::transmute::<[i16; 2], i32>([0i16, 0i16]); - //~^ ERROR: transmute used without annotations + i = std::mem::transmute::<[i16; 2], i32>([0i16, 0i16]); + //~^ ERROR: transmute used without annotations - i = std::mem::transmute::(Foo::A); - //~^ ERROR: transmute used without annotations + i = std::mem::transmute::(Foo::A); + //~^ ERROR: transmute used without annotations - i + i + } } fn main() { diff --git a/tests/ui/missing_transmute_annotations.rs b/tests/ui/missing_transmute_annotations.rs index c12e1b0f8d220..c9a4c5fa83b2b 100644 --- a/tests/ui/missing_transmute_annotations.rs +++ b/tests/ui/missing_transmute_annotations.rs @@ -18,8 +18,10 @@ fn bar(x: i32) -> i32 { } unsafe fn foo1() -> i32 { - // Should not warn! - std::mem::transmute([1u16, 2u16]) + unsafe { + // Should not warn! + std::mem::transmute([1u16, 2u16]) + } } // Should not warn! @@ -31,33 +33,35 @@ enum Foo { } unsafe fn foo2() -> i32 { - let mut i: i32 = 0; - i = std::mem::transmute([1u16, 2u16]); - //~^ ERROR: transmute used without annotations - i = std::mem::transmute::<_, _>([1u16, 2u16]); - //~^ ERROR: transmute used without annotations - i = std::mem::transmute::<_, i32>([1u16, 2u16]); - //~^ ERROR: transmute used without annotations - i = std::mem::transmute::<[u16; 2], _>([1u16, 2u16]); - //~^ ERROR: transmute used without annotations + unsafe { + let mut i: i32 = 0; + i = std::mem::transmute([1u16, 2u16]); + //~^ ERROR: transmute used without annotations + i = std::mem::transmute::<_, _>([1u16, 2u16]); + //~^ ERROR: transmute used without annotations + i = std::mem::transmute::<_, i32>([1u16, 2u16]); + //~^ ERROR: transmute used without annotations + i = std::mem::transmute::<[u16; 2], _>([1u16, 2u16]); + //~^ ERROR: transmute used without annotations - let x: i32 = bar(std::mem::transmute::<[u16; 2], _>([1u16, 2u16])); - //~^ ERROR: transmute used without annotations - bar(std::mem::transmute::<[u16; 2], _>([1u16, 2u16])); - //~^ ERROR: transmute used without annotations + let x: i32 = bar(std::mem::transmute::<[u16; 2], _>([1u16, 2u16])); + //~^ ERROR: transmute used without annotations + bar(std::mem::transmute::<[u16; 2], _>([1u16, 2u16])); + //~^ ERROR: transmute used without annotations - i = local_bad_transmute!([1u16, 2u16]); + i = local_bad_transmute!([1u16, 2u16]); - // Should not warn. - i = bad_transmute!([1u16, 2u16]); + // Should not warn. + i = bad_transmute!([1u16, 2u16]); - i = std::mem::transmute([0i16, 0i16]); - //~^ ERROR: transmute used without annotations + i = std::mem::transmute([0i16, 0i16]); + //~^ ERROR: transmute used without annotations - i = std::mem::transmute(Foo::A); - //~^ ERROR: transmute used without annotations + i = std::mem::transmute(Foo::A); + //~^ ERROR: transmute used without annotations - i + i + } } fn main() { diff --git a/tests/ui/missing_transmute_annotations.stderr b/tests/ui/missing_transmute_annotations.stderr index 5903ed488ef18..63f7e28ee7dc6 100644 --- a/tests/ui/missing_transmute_annotations.stderr +++ b/tests/ui/missing_transmute_annotations.stderr @@ -1,41 +1,41 @@ error: transmute used without annotations - --> tests/ui/missing_transmute_annotations.rs:35:19 + --> tests/ui/missing_transmute_annotations.rs:38:23 | -LL | i = std::mem::transmute([1u16, 2u16]); - | ^^^^^^^^^ help: consider adding missing annotations: `transmute::<[u16; 2], i32>` +LL | i = std::mem::transmute([1u16, 2u16]); + | ^^^^^^^^^ help: consider adding missing annotations: `transmute::<[u16; 2], i32>` | = note: `-D clippy::missing-transmute-annotations` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::missing_transmute_annotations)]` error: transmute used without annotations - --> tests/ui/missing_transmute_annotations.rs:37:19 + --> tests/ui/missing_transmute_annotations.rs:40:23 | -LL | i = std::mem::transmute::<_, _>([1u16, 2u16]); - | ^^^^^^^^^^^^^^^^^ help: consider adding missing annotations: `transmute::<[u16; 2], i32>` +LL | i = std::mem::transmute::<_, _>([1u16, 2u16]); + | ^^^^^^^^^^^^^^^^^ help: consider adding missing annotations: `transmute::<[u16; 2], i32>` error: transmute used without annotations - --> tests/ui/missing_transmute_annotations.rs:39:19 + --> tests/ui/missing_transmute_annotations.rs:42:23 | -LL | i = std::mem::transmute::<_, i32>([1u16, 2u16]); - | ^^^^^^^^^^^^^^^^^^^ help: consider adding missing annotations: `transmute::<[u16; 2], i32>` +LL | i = std::mem::transmute::<_, i32>([1u16, 2u16]); + | ^^^^^^^^^^^^^^^^^^^ help: consider adding missing annotations: `transmute::<[u16; 2], i32>` error: transmute used without annotations - --> tests/ui/missing_transmute_annotations.rs:41:19 + --> tests/ui/missing_transmute_annotations.rs:44:23 | -LL | i = std::mem::transmute::<[u16; 2], _>([1u16, 2u16]); - | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider adding missing annotations: `transmute::<[u16; 2], i32>` +LL | i = std::mem::transmute::<[u16; 2], _>([1u16, 2u16]); + | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider adding missing annotations: `transmute::<[u16; 2], i32>` error: transmute used without annotations - --> tests/ui/missing_transmute_annotations.rs:44:32 + --> tests/ui/missing_transmute_annotations.rs:47:36 | -LL | let x: i32 = bar(std::mem::transmute::<[u16; 2], _>([1u16, 2u16])); - | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider adding missing annotations: `transmute::<[u16; 2], i32>` +LL | let x: i32 = bar(std::mem::transmute::<[u16; 2], _>([1u16, 2u16])); + | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider adding missing annotations: `transmute::<[u16; 2], i32>` error: transmute used without annotations - --> tests/ui/missing_transmute_annotations.rs:46:19 + --> tests/ui/missing_transmute_annotations.rs:49:23 | -LL | bar(std::mem::transmute::<[u16; 2], _>([1u16, 2u16])); - | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider adding missing annotations: `transmute::<[u16; 2], i32>` +LL | bar(std::mem::transmute::<[u16; 2], _>([1u16, 2u16])); + | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider adding missing annotations: `transmute::<[u16; 2], i32>` error: transmute used without annotations --> tests/ui/missing_transmute_annotations.rs:11:19 @@ -43,31 +43,31 @@ error: transmute used without annotations LL | std::mem::transmute($e) | ^^^^^^^^^ help: consider adding missing annotations: `transmute::<[u16; 2], i32>` ... -LL | i = local_bad_transmute!([1u16, 2u16]); - | ---------------------------------- in this macro invocation +LL | i = local_bad_transmute!([1u16, 2u16]); + | ---------------------------------- in this macro invocation | = note: this error originates in the macro `local_bad_transmute` (in Nightly builds, run with -Z macro-backtrace for more info) error: transmute used without annotations - --> tests/ui/missing_transmute_annotations.rs:54:19 + --> tests/ui/missing_transmute_annotations.rs:57:23 | -LL | i = std::mem::transmute([0i16, 0i16]); - | ^^^^^^^^^ help: consider adding missing annotations: `transmute::<[i16; 2], i32>` +LL | i = std::mem::transmute([0i16, 0i16]); + | ^^^^^^^^^ help: consider adding missing annotations: `transmute::<[i16; 2], i32>` error: transmute used without annotations - --> tests/ui/missing_transmute_annotations.rs:57:19 + --> tests/ui/missing_transmute_annotations.rs:60:23 | -LL | i = std::mem::transmute(Foo::A); - | ^^^^^^^^^ help: consider adding missing annotations: `transmute::` +LL | i = std::mem::transmute(Foo::A); + | ^^^^^^^^^ help: consider adding missing annotations: `transmute::` error: transmute used without annotations - --> tests/ui/missing_transmute_annotations.rs:64:35 + --> tests/ui/missing_transmute_annotations.rs:68:35 | LL | let x: _ = unsafe { std::mem::transmute::<_, i32>([1u16, 2u16]) }; | ^^^^^^^^^^^^^^^^^^^ help: consider adding missing annotations: `transmute::<[u16; 2], i32>` error: transmute used without annotations - --> tests/ui/missing_transmute_annotations.rs:67:30 + --> tests/ui/missing_transmute_annotations.rs:71:30 | LL | let x: _ = std::mem::transmute::<_, i32>([1u16, 2u16]); | ^^^^^^^^^^^^^^^^^^^ help: consider adding missing annotations: `transmute::<[u16; 2], i32>` diff --git a/tests/ui/must_use_candidates.fixed b/tests/ui/must_use_candidates.fixed index b5d356a502170..4c1d6b1ccb596 100644 --- a/tests/ui/must_use_candidates.fixed +++ b/tests/ui/must_use_candidates.fixed @@ -88,11 +88,13 @@ static mut COUNTER: usize = 0; /// /// Don't ever call this from multiple threads pub unsafe fn mutates_static() -> usize { - COUNTER += 1; - COUNTER + unsafe { + COUNTER += 1; + COUNTER + } } -#[no_mangle] +#[unsafe(no_mangle)] pub extern "C" fn unmangled(i: bool) -> bool { !i } diff --git a/tests/ui/must_use_candidates.rs b/tests/ui/must_use_candidates.rs index 14ea16662fdb4..71d546718ae79 100644 --- a/tests/ui/must_use_candidates.rs +++ b/tests/ui/must_use_candidates.rs @@ -88,11 +88,13 @@ static mut COUNTER: usize = 0; /// /// Don't ever call this from multiple threads pub unsafe fn mutates_static() -> usize { - COUNTER += 1; - COUNTER + unsafe { + COUNTER += 1; + COUNTER + } } -#[no_mangle] +#[unsafe(no_mangle)] pub extern "C" fn unmangled(i: bool) -> bool { !i } diff --git a/tests/ui/mut_from_ref.rs b/tests/ui/mut_from_ref.rs index b8c10f3eeb8f9..1b0b351518cbb 100644 --- a/tests/ui/mut_from_ref.rs +++ b/tests/ui/mut_from_ref.rs @@ -1,4 +1,10 @@ -#![allow(unused, clippy::needless_lifetimes, clippy::needless_pass_by_ref_mut)] +#![allow( + unused, + clippy::needless_lifetimes, + clippy::needless_pass_by_ref_mut, + clippy::redundant_allocation, + clippy::boxed_local +)] #![warn(clippy::mut_from_ref)] struct Foo; @@ -40,6 +46,18 @@ fn fail_double<'a, 'b>(x: &'a u32, y: &'a u32, z: &'b mut u32) -> &'a mut u32 { unsafe { unimplemented!() } } +fn fail_tuples<'a>(x: (&'a u32, &'a u32)) -> &'a mut u32 { + //~^ mut_from_ref + + unsafe { unimplemented!() } +} + +fn fail_box<'a>(x: Box<&'a u32>) -> &'a mut u32 { + //~^ mut_from_ref + + unsafe { unimplemented!() } +} + // this is OK, because the result borrows y fn works<'a>(x: &u32, y: &'a mut u32) -> &'a mut u32 { unsafe { unimplemented!() } @@ -50,6 +68,20 @@ fn also_works<'a>(x: &'a u32, y: &'a mut u32) -> &'a mut u32 { unsafe { unimplemented!() } } +fn works_tuples<'a>(x: (&'a u32, &'a mut u32)) -> &'a mut u32 { + unsafe { unimplemented!() } +} + +fn works_box<'a>(x: &'a u32, y: Box<&'a mut u32>) -> &'a mut u32 { + unsafe { unimplemented!() } +} + +struct RefMut<'a>(&'a mut u32); + +fn works_parameter<'a>(x: &'a u32, y: RefMut<'a>) -> &'a mut u32 { + unsafe { unimplemented!() } +} + unsafe fn also_broken(x: &u32) -> &mut u32 { //~^ mut_from_ref diff --git a/tests/ui/mut_from_ref.stderr b/tests/ui/mut_from_ref.stderr index 8c3c8e0c3d851..0974268734653 100644 --- a/tests/ui/mut_from_ref.stderr +++ b/tests/ui/mut_from_ref.stderr @@ -1,11 +1,11 @@ error: mutable borrow from immutable input(s) - --> tests/ui/mut_from_ref.rs:7:39 + --> tests/ui/mut_from_ref.rs:13:39 | LL | fn this_wont_hurt_a_bit(&self) -> &mut Foo { | ^^^^^^^^ | note: immutable borrow here - --> tests/ui/mut_from_ref.rs:7:29 + --> tests/ui/mut_from_ref.rs:13:29 | LL | fn this_wont_hurt_a_bit(&self) -> &mut Foo { | ^^^^^ @@ -13,64 +13,88 @@ LL | fn this_wont_hurt_a_bit(&self) -> &mut Foo { = help: to override `-D warnings` add `#[allow(clippy::mut_from_ref)]` error: mutable borrow from immutable input(s) - --> tests/ui/mut_from_ref.rs:15:25 + --> tests/ui/mut_from_ref.rs:21:25 | LL | fn ouch(x: &Foo) -> &mut Foo; | ^^^^^^^^ | note: immutable borrow here - --> tests/ui/mut_from_ref.rs:15:16 + --> tests/ui/mut_from_ref.rs:21:16 | LL | fn ouch(x: &Foo) -> &mut Foo; | ^^^^ error: mutable borrow from immutable input(s) - --> tests/ui/mut_from_ref.rs:25:21 + --> tests/ui/mut_from_ref.rs:31:21 | LL | fn fail(x: &u32) -> &mut u16 { | ^^^^^^^^ | note: immutable borrow here - --> tests/ui/mut_from_ref.rs:25:12 + --> tests/ui/mut_from_ref.rs:31:12 | LL | fn fail(x: &u32) -> &mut u16 { | ^^^^ error: mutable borrow from immutable input(s) - --> tests/ui/mut_from_ref.rs:31:50 + --> tests/ui/mut_from_ref.rs:37:50 | LL | fn fail_lifetime<'a>(x: &'a u32, y: &mut u32) -> &'a mut u32 { | ^^^^^^^^^^^ | note: immutable borrow here - --> tests/ui/mut_from_ref.rs:31:25 + --> tests/ui/mut_from_ref.rs:37:25 | LL | fn fail_lifetime<'a>(x: &'a u32, y: &mut u32) -> &'a mut u32 { | ^^^^^^^ error: mutable borrow from immutable input(s) - --> tests/ui/mut_from_ref.rs:37:67 + --> tests/ui/mut_from_ref.rs:43:67 | LL | fn fail_double<'a, 'b>(x: &'a u32, y: &'a u32, z: &'b mut u32) -> &'a mut u32 { | ^^^^^^^^^^^ | note: immutable borrow here - --> tests/ui/mut_from_ref.rs:37:27 + --> tests/ui/mut_from_ref.rs:43:27 | LL | fn fail_double<'a, 'b>(x: &'a u32, y: &'a u32, z: &'b mut u32) -> &'a mut u32 { | ^^^^^^^ ^^^^^^^ error: mutable borrow from immutable input(s) - --> tests/ui/mut_from_ref.rs:53:35 + --> tests/ui/mut_from_ref.rs:49:46 + | +LL | fn fail_tuples<'a>(x: (&'a u32, &'a u32)) -> &'a mut u32 { + | ^^^^^^^^^^^ + | +note: immutable borrow here + --> tests/ui/mut_from_ref.rs:49:24 + | +LL | fn fail_tuples<'a>(x: (&'a u32, &'a u32)) -> &'a mut u32 { + | ^^^^^^^ ^^^^^^^ + +error: mutable borrow from immutable input(s) + --> tests/ui/mut_from_ref.rs:55:37 + | +LL | fn fail_box<'a>(x: Box<&'a u32>) -> &'a mut u32 { + | ^^^^^^^^^^^ + | +note: immutable borrow here + --> tests/ui/mut_from_ref.rs:55:24 + | +LL | fn fail_box<'a>(x: Box<&'a u32>) -> &'a mut u32 { + | ^^^^^^^ + +error: mutable borrow from immutable input(s) + --> tests/ui/mut_from_ref.rs:85:35 | LL | unsafe fn also_broken(x: &u32) -> &mut u32 { | ^^^^^^^^ | note: immutable borrow here - --> tests/ui/mut_from_ref.rs:53:26 + --> tests/ui/mut_from_ref.rs:85:26 | LL | unsafe fn also_broken(x: &u32) -> &mut u32 { | ^^^^ -error: aborting due to 6 previous errors +error: aborting due to 8 previous errors diff --git a/tests/ui/mutex_atomic.rs b/tests/ui/mutex_atomic.rs index 80a712a9286a4..7db5c9f274f6e 100644 --- a/tests/ui/mutex_atomic.rs +++ b/tests/ui/mutex_atomic.rs @@ -1,4 +1,3 @@ -#![warn(clippy::all)] #![warn(clippy::mutex_integer)] #![warn(clippy::mutex_atomic)] #![allow(clippy::borrow_as_ptr)] diff --git a/tests/ui/mutex_atomic.stderr b/tests/ui/mutex_atomic.stderr index 838fc1d7c36ee..a6d5d60fbf05b 100644 --- a/tests/ui/mutex_atomic.stderr +++ b/tests/ui/mutex_atomic.stderr @@ -1,5 +1,5 @@ error: consider using an `AtomicBool` instead of a `Mutex` here; if you just want the locking behavior and not the internal type, consider using `Mutex<()>` - --> tests/ui/mutex_atomic.rs:8:5 + --> tests/ui/mutex_atomic.rs:7:5 | LL | Mutex::new(true); | ^^^^^^^^^^^^^^^^ @@ -8,31 +8,31 @@ LL | Mutex::new(true); = help: to override `-D warnings` add `#[allow(clippy::mutex_atomic)]` error: consider using an `AtomicUsize` instead of a `Mutex` here; if you just want the locking behavior and not the internal type, consider using `Mutex<()>` - --> tests/ui/mutex_atomic.rs:11:5 + --> tests/ui/mutex_atomic.rs:10:5 | LL | Mutex::new(5usize); | ^^^^^^^^^^^^^^^^^^ error: consider using an `AtomicIsize` instead of a `Mutex` here; if you just want the locking behavior and not the internal type, consider using `Mutex<()>` - --> tests/ui/mutex_atomic.rs:14:5 + --> tests/ui/mutex_atomic.rs:13:5 | LL | Mutex::new(9isize); | ^^^^^^^^^^^^^^^^^^ error: consider using an `AtomicPtr` instead of a `Mutex` here; if you just want the locking behavior and not the internal type, consider using `Mutex<()>` - --> tests/ui/mutex_atomic.rs:18:5 + --> tests/ui/mutex_atomic.rs:17:5 | LL | Mutex::new(&x as *const u32); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: consider using an `AtomicPtr` instead of a `Mutex` here; if you just want the locking behavior and not the internal type, consider using `Mutex<()>` - --> tests/ui/mutex_atomic.rs:21:5 + --> tests/ui/mutex_atomic.rs:20:5 | LL | Mutex::new(&mut x as *mut u32); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: consider using an `AtomicU32` instead of a `Mutex` here; if you just want the locking behavior and not the internal type, consider using `Mutex<()>` - --> tests/ui/mutex_atomic.rs:24:5 + --> tests/ui/mutex_atomic.rs:23:5 | LL | Mutex::new(0u32); | ^^^^^^^^^^^^^^^^ @@ -41,31 +41,31 @@ LL | Mutex::new(0u32); = help: to override `-D warnings` add `#[allow(clippy::mutex_integer)]` error: consider using an `AtomicI32` instead of a `Mutex` here; if you just want the locking behavior and not the internal type, consider using `Mutex<()>` - --> tests/ui/mutex_atomic.rs:27:5 + --> tests/ui/mutex_atomic.rs:26:5 | LL | Mutex::new(0i32); | ^^^^^^^^^^^^^^^^ error: consider using an `AtomicU8` instead of a `Mutex` here; if you just want the locking behavior and not the internal type, consider using `Mutex<()>` - --> tests/ui/mutex_atomic.rs:31:5 + --> tests/ui/mutex_atomic.rs:30:5 | LL | Mutex::new(0u8); | ^^^^^^^^^^^^^^^ error: consider using an `AtomicI16` instead of a `Mutex` here; if you just want the locking behavior and not the internal type, consider using `Mutex<()>` - --> tests/ui/mutex_atomic.rs:34:5 + --> tests/ui/mutex_atomic.rs:33:5 | LL | Mutex::new(0i16); | ^^^^^^^^^^^^^^^^ error: consider using an `AtomicI8` instead of a `Mutex` here; if you just want the locking behavior and not the internal type, consider using `Mutex<()>` - --> tests/ui/mutex_atomic.rs:37:25 + --> tests/ui/mutex_atomic.rs:36:25 | LL | let _x: Mutex = Mutex::new(0); | ^^^^^^^^^^^^^ error: consider using an `AtomicI64` instead of a `Mutex` here; if you just want the locking behavior and not the internal type, consider using `Mutex<()>` - --> tests/ui/mutex_atomic.rs:41:5 + --> tests/ui/mutex_atomic.rs:40:5 | LL | Mutex::new(X); | ^^^^^^^^^^^^^ diff --git a/tests/ui/needless_borrowed_ref.fixed b/tests/ui/needless_borrowed_ref.fixed index e4504bc2784cc..84924cac62d52 100644 --- a/tests/ui/needless_borrowed_ref.fixed +++ b/tests/ui/needless_borrowed_ref.fixed @@ -89,7 +89,7 @@ fn should_not_lint( tuple_struct: TupleStruct, s: Struct, ) { - if let [ref a] = slice {} + if let [a] = slice {} if let &[ref a, b] = slice {} if let &[ref a, .., b] = slice {} diff --git a/tests/ui/needless_borrowed_ref.rs b/tests/ui/needless_borrowed_ref.rs index 7edfda60b9790..280cef43340cc 100644 --- a/tests/ui/needless_borrowed_ref.rs +++ b/tests/ui/needless_borrowed_ref.rs @@ -89,7 +89,7 @@ fn should_not_lint( tuple_struct: TupleStruct, s: Struct, ) { - if let [ref a] = slice {} + if let [a] = slice {} if let &[ref a, b] = slice {} if let &[ref a, .., b] = slice {} diff --git a/tests/ui/needless_collect.fixed b/tests/ui/needless_collect.fixed index 6551fa56b42ce..b09efe9888f50 100644 --- a/tests/ui/needless_collect.fixed +++ b/tests/ui/needless_collect.fixed @@ -126,3 +126,87 @@ fn main() { fn foo(_: impl IntoIterator) {} fn bar>(_: Vec, _: I) {} fn baz>(_: I, _: (), _: impl IntoIterator) {} + +mod issue9191 { + use std::cell::Cell; + use std::collections::HashSet; + use std::hash::Hash; + use std::marker::PhantomData; + use std::ops::Deref; + + fn captures_ref_mut(xs: Vec, mut ys: HashSet) { + if xs.iter().map(|x| ys.remove(x)).collect::>().contains(&true) { + todo!() + } + } + + #[derive(Debug, Clone)] + struct MyRef<'a>(PhantomData<&'a mut Cell>>, *mut Cell>); + + impl MyRef<'_> { + fn new(target: &mut Cell>) -> Self { + MyRef(PhantomData, target) + } + + fn get(&mut self) -> &mut Cell> { + unsafe { &mut *self.1 } + } + } + + fn captures_phantom(xs: Vec, mut ys: Cell>) { + let mut ys_ref = MyRef::new(&mut ys); + if xs + .iter() + .map({ + let mut ys_ref = ys_ref.clone(); + move |x| ys_ref.get().get_mut().remove(x) + }) + .collect::>() + .contains(&true) + { + todo!() + } + } +} + +pub fn issue8055(v: impl IntoIterator) -> Result, usize> { + let mut zeros = 0; + + let res: Vec<_> = v + .into_iter() + .filter(|i| { + if *i == 0 { + zeros += 1 + }; + *i != 0 + }) + .collect(); + + if zeros != 0 { + return Err(zeros); + } + Ok(res.into_iter()) +} + +mod issue8055_regression { + struct Foo { + inner: T, + marker: core::marker::PhantomData, + } + + impl Iterator for Foo { + type Item = T::Item; + fn next(&mut self) -> Option { + self.inner.next() + } + } + + fn foo() { + Foo { + inner: [].iter(), + marker: core::marker::PhantomData, + } + .collect::>() + .len(); + } +} diff --git a/tests/ui/needless_collect.rs b/tests/ui/needless_collect.rs index 973c41c687544..da4182966bb17 100644 --- a/tests/ui/needless_collect.rs +++ b/tests/ui/needless_collect.rs @@ -126,3 +126,87 @@ fn main() { fn foo(_: impl IntoIterator) {} fn bar>(_: Vec, _: I) {} fn baz>(_: I, _: (), _: impl IntoIterator) {} + +mod issue9191 { + use std::cell::Cell; + use std::collections::HashSet; + use std::hash::Hash; + use std::marker::PhantomData; + use std::ops::Deref; + + fn captures_ref_mut(xs: Vec, mut ys: HashSet) { + if xs.iter().map(|x| ys.remove(x)).collect::>().contains(&true) { + todo!() + } + } + + #[derive(Debug, Clone)] + struct MyRef<'a>(PhantomData<&'a mut Cell>>, *mut Cell>); + + impl MyRef<'_> { + fn new(target: &mut Cell>) -> Self { + MyRef(PhantomData, target) + } + + fn get(&mut self) -> &mut Cell> { + unsafe { &mut *self.1 } + } + } + + fn captures_phantom(xs: Vec, mut ys: Cell>) { + let mut ys_ref = MyRef::new(&mut ys); + if xs + .iter() + .map({ + let mut ys_ref = ys_ref.clone(); + move |x| ys_ref.get().get_mut().remove(x) + }) + .collect::>() + .contains(&true) + { + todo!() + } + } +} + +pub fn issue8055(v: impl IntoIterator) -> Result, usize> { + let mut zeros = 0; + + let res: Vec<_> = v + .into_iter() + .filter(|i| { + if *i == 0 { + zeros += 1 + }; + *i != 0 + }) + .collect(); + + if zeros != 0 { + return Err(zeros); + } + Ok(res.into_iter()) +} + +mod issue8055_regression { + struct Foo { + inner: T, + marker: core::marker::PhantomData, + } + + impl Iterator for Foo { + type Item = T::Item; + fn next(&mut self) -> Option { + self.inner.next() + } + } + + fn foo() { + Foo { + inner: [].iter(), + marker: core::marker::PhantomData, + } + .collect::>() + .len(); + } +} diff --git a/tests/ui/needless_lifetimes.fixed b/tests/ui/needless_lifetimes.fixed index d59393fb3f3c6..e9d811986aa49 100644 --- a/tests/ui/needless_lifetimes.fixed +++ b/tests/ui/needless_lifetimes.fixed @@ -534,4 +534,11 @@ mod issue13749bis { impl<'a, T: 'a> Generic {} } +pub fn issue14607<'s>(x: &'s u8) { + #[expect(clippy::redundant_closure_call)] + (|| { + let _: &'s u8 = x; + })(); +} + fn main() {} diff --git a/tests/ui/needless_lifetimes.rs b/tests/ui/needless_lifetimes.rs index e24907ab5fcdf..0b6eb9755b932 100644 --- a/tests/ui/needless_lifetimes.rs +++ b/tests/ui/needless_lifetimes.rs @@ -534,4 +534,11 @@ mod issue13749bis { impl<'a, T: 'a> Generic {} } +pub fn issue14607<'s>(x: &'s u8) { + #[expect(clippy::redundant_closure_call)] + (|| { + let _: &'s u8 = x; + })(); +} + fn main() {} diff --git a/tests/ui/needless_pass_by_ref_mut.rs b/tests/ui/needless_pass_by_ref_mut.rs index f0c5a716ac991..bdad3e3d5b008 100644 --- a/tests/ui/needless_pass_by_ref_mut.rs +++ b/tests/ui/needless_pass_by_ref_mut.rs @@ -1,8 +1,9 @@ #![allow( clippy::if_same_then_else, clippy::no_effect, + clippy::ptr_arg, clippy::redundant_closure_call, - clippy::ptr_arg + clippy::uninlined_format_args )] #![warn(clippy::needless_pass_by_ref_mut)] //@no-rustfix @@ -300,7 +301,7 @@ struct Data { } // Unsafe functions should not warn. unsafe fn get_mut_unchecked(ptr: &mut NonNull>) -> &mut T { - &mut (*ptr.as_ptr()).value + unsafe { &mut (*ptr.as_ptr()).value } } // Unsafe blocks should not warn. fn get_mut_unchecked2(ptr: &mut NonNull>) -> &mut T { diff --git a/tests/ui/needless_pass_by_ref_mut.stderr b/tests/ui/needless_pass_by_ref_mut.stderr index 6637a255b5f51..94d98f0e9b12d 100644 --- a/tests/ui/needless_pass_by_ref_mut.stderr +++ b/tests/ui/needless_pass_by_ref_mut.stderr @@ -1,5 +1,5 @@ error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:11:11 + --> tests/ui/needless_pass_by_ref_mut.rs:12:11 | LL | fn foo(s: &mut Vec, b: &u32, x: &mut u32) { | ^^^^^^^^^^^^^ help: consider changing to: `&Vec` @@ -8,79 +8,79 @@ LL | fn foo(s: &mut Vec, b: &u32, x: &mut u32) { = help: to override `-D warnings` add `#[allow(clippy::needless_pass_by_ref_mut)]` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:37:12 + --> tests/ui/needless_pass_by_ref_mut.rs:38:12 | LL | fn foo6(s: &mut Vec) { | ^^^^^^^^^^^^^ help: consider changing to: `&Vec` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:48:12 + --> tests/ui/needless_pass_by_ref_mut.rs:49:12 | LL | fn bar(&mut self) {} | ^^^^^^^^^ help: consider changing to: `&self` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:51:29 + --> tests/ui/needless_pass_by_ref_mut.rs:52:29 | LL | fn mushroom(&self, vec: &mut Vec) -> usize { | ^^^^^^^^^^^^^ help: consider changing to: `&Vec` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:129:16 + --> tests/ui/needless_pass_by_ref_mut.rs:130:16 | LL | async fn a1(x: &mut i32) { | ^^^^^^^^ help: consider changing to: `&i32` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:134:16 + --> tests/ui/needless_pass_by_ref_mut.rs:135:16 | LL | async fn a2(x: &mut i32, y: String) { | ^^^^^^^^ help: consider changing to: `&i32` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:139:16 + --> tests/ui/needless_pass_by_ref_mut.rs:140:16 | LL | async fn a3(x: &mut i32, y: String, z: String) { | ^^^^^^^^ help: consider changing to: `&i32` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:144:16 + --> tests/ui/needless_pass_by_ref_mut.rs:145:16 | LL | async fn a4(x: &mut i32, y: i32) { | ^^^^^^^^ help: consider changing to: `&i32` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:149:24 + --> tests/ui/needless_pass_by_ref_mut.rs:150:24 | LL | async fn a5(x: i32, y: &mut i32) { | ^^^^^^^^ help: consider changing to: `&i32` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:154:24 + --> tests/ui/needless_pass_by_ref_mut.rs:155:24 | LL | async fn a6(x: i32, y: &mut i32) { | ^^^^^^^^ help: consider changing to: `&i32` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:159:32 + --> tests/ui/needless_pass_by_ref_mut.rs:160:32 | LL | async fn a7(x: i32, y: i32, z: &mut i32) { | ^^^^^^^^ help: consider changing to: `&i32` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:164:24 + --> tests/ui/needless_pass_by_ref_mut.rs:165:24 | LL | async fn a8(x: i32, a: &mut i32, y: i32, z: &mut i32) { | ^^^^^^^^ help: consider changing to: `&i32` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:164:45 + --> tests/ui/needless_pass_by_ref_mut.rs:165:45 | LL | async fn a8(x: i32, a: &mut i32, y: i32, z: &mut i32) { | ^^^^^^^^ help: consider changing to: `&i32` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:200:16 + --> tests/ui/needless_pass_by_ref_mut.rs:201:16 | LL | fn cfg_warn(s: &mut u32) {} | ^^^^^^^^ help: consider changing to: `&u32` @@ -88,7 +88,7 @@ LL | fn cfg_warn(s: &mut u32) {} = note: this is cfg-gated and may require further changes error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:205:20 + --> tests/ui/needless_pass_by_ref_mut.rs:206:20 | LL | fn cfg_warn(s: &mut u32) {} | ^^^^^^^^ help: consider changing to: `&u32` @@ -96,115 +96,115 @@ LL | fn cfg_warn(s: &mut u32) {} = note: this is cfg-gated and may require further changes error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:218:39 + --> tests/ui/needless_pass_by_ref_mut.rs:219:39 | LL | async fn inner_async2(x: &mut i32, y: &mut u32) { | ^^^^^^^^ help: consider changing to: `&u32` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:227:26 + --> tests/ui/needless_pass_by_ref_mut.rs:228:26 | LL | async fn inner_async3(x: &mut i32, y: &mut u32) { | ^^^^^^^^ help: consider changing to: `&i32` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:247:30 + --> tests/ui/needless_pass_by_ref_mut.rs:248:30 | LL | async fn call_in_closure1(n: &mut str) { | ^^^^^^^^ help: consider changing to: `&str` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:267:16 + --> tests/ui/needless_pass_by_ref_mut.rs:268:16 | LL | fn closure2(n: &mut usize) -> impl '_ + FnMut() -> usize { | ^^^^^^^^^^ help: consider changing to: `&usize` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:279:22 + --> tests/ui/needless_pass_by_ref_mut.rs:280:22 | LL | async fn closure4(n: &mut usize) { | ^^^^^^^^^^ help: consider changing to: `&usize` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:334:12 + --> tests/ui/needless_pass_by_ref_mut.rs:335:12 | LL | fn bar(&mut self) {} | ^^^^^^^^^ help: consider changing to: `&self` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:337:18 + --> tests/ui/needless_pass_by_ref_mut.rs:338:18 | LL | async fn foo(&mut self, u: &mut i32, v: &mut u32) { | ^^^^^^^^^ help: consider changing to: `&self` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:337:45 + --> tests/ui/needless_pass_by_ref_mut.rs:338:45 | LL | async fn foo(&mut self, u: &mut i32, v: &mut u32) { | ^^^^^^^^ help: consider changing to: `&u32` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:346:46 + --> tests/ui/needless_pass_by_ref_mut.rs:347:46 | LL | async fn foo2(&mut self, u: &mut i32, v: &mut u32) { | ^^^^^^^^ help: consider changing to: `&u32` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:363:18 + --> tests/ui/needless_pass_by_ref_mut.rs:364:18 | LL | fn _empty_tup(x: &mut (())) {} | ^^^^^^^^^ help: consider changing to: `&()` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:365:19 + --> tests/ui/needless_pass_by_ref_mut.rs:366:19 | LL | fn _single_tup(x: &mut ((i32,))) {} | ^^^^^^^^^^^^^ help: consider changing to: `&(i32,)` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:367:18 + --> tests/ui/needless_pass_by_ref_mut.rs:368:18 | LL | fn _multi_tup(x: &mut ((i32, u32))) {} | ^^^^^^^^^^^^^^^^^ help: consider changing to: `&(i32, u32)` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:369:11 + --> tests/ui/needless_pass_by_ref_mut.rs:370:11 | LL | fn _fn(x: &mut (fn())) {} | ^^^^^^^^^^^ help: consider changing to: `&fn()` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:372:23 + --> tests/ui/needless_pass_by_ref_mut.rs:373:23 | LL | fn _extern_rust_fn(x: &mut extern "Rust" fn()) {} | ^^^^^^^^^^^^^^^^^^^^^^^ help: consider changing to: `&extern "Rust" fn()` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:374:20 + --> tests/ui/needless_pass_by_ref_mut.rs:375:20 | LL | fn _extern_c_fn(x: &mut extern "C" fn()) {} | ^^^^^^^^^^^^^^^^^^^^ help: consider changing to: `&extern "C" fn()` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:376:18 + --> tests/ui/needless_pass_by_ref_mut.rs:377:18 | LL | fn _unsafe_fn(x: &mut unsafe fn()) {} | ^^^^^^^^^^^^^^^^ help: consider changing to: `&unsafe fn()` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:378:25 + --> tests/ui/needless_pass_by_ref_mut.rs:379:25 | LL | fn _unsafe_extern_fn(x: &mut unsafe extern "C" fn()) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider changing to: `&unsafe extern "C" fn()` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:380:20 + --> tests/ui/needless_pass_by_ref_mut.rs:381:20 | LL | fn _fn_with_arg(x: &mut unsafe extern "C" fn(i32)) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider changing to: `&unsafe extern "C" fn(i32)` error: this argument is a mutable reference, but not used mutably - --> tests/ui/needless_pass_by_ref_mut.rs:382:20 + --> tests/ui/needless_pass_by_ref_mut.rs:383:20 | LL | fn _fn_with_ret(x: &mut unsafe extern "C" fn() -> (i32)) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider changing to: `&unsafe extern "C" fn() -> (i32)` diff --git a/tests/ui/needless_pass_by_ref_mut_2021.rs b/tests/ui/needless_pass_by_ref_mut_2021.rs new file mode 100644 index 0000000000000..994eba9cae3d7 --- /dev/null +++ b/tests/ui/needless_pass_by_ref_mut_2021.rs @@ -0,0 +1,12 @@ +//@edition: 2021 +//@check-pass +#![warn(clippy::needless_pass_by_ref_mut)] + +struct Data { + value: T, +} + +// Unsafe functions should not warn. +unsafe fn get_mut_unchecked(ptr: &mut std::ptr::NonNull>) -> &mut T { + &mut (*ptr.as_ptr()).value +} diff --git a/tests/ui/neg_multiply.fixed b/tests/ui/neg_multiply.fixed index 995470493bfb7..ff6e08300e298 100644 --- a/tests/ui/neg_multiply.fixed +++ b/tests/ui/neg_multiply.fixed @@ -53,3 +53,32 @@ fn main() { X * -1; // should be ok -1 * X; // should also be ok } + +fn float() { + let x = 0.0; + + -x; + //~^ neg_multiply + + -x; + //~^ neg_multiply + + 100.0 + -x; + //~^ neg_multiply + + -(100.0 + x); + //~^ neg_multiply + + -17.0; + //~^ neg_multiply + + 0.0 + -0.0; + //~^ neg_multiply + + -(3.0_f32 as f64); + //~^ neg_multiply + -(3.0_f32 as f64); + //~^ neg_multiply + + -1.0 * -1.0; // should be ok +} diff --git a/tests/ui/neg_multiply.rs b/tests/ui/neg_multiply.rs index 95b94e29517fa..b0f4e85c78e5d 100644 --- a/tests/ui/neg_multiply.rs +++ b/tests/ui/neg_multiply.rs @@ -53,3 +53,32 @@ fn main() { X * -1; // should be ok -1 * X; // should also be ok } + +fn float() { + let x = 0.0; + + x * -1.0; + //~^ neg_multiply + + -1.0 * x; + //~^ neg_multiply + + 100.0 + x * -1.0; + //~^ neg_multiply + + (100.0 + x) * -1.0; + //~^ neg_multiply + + -1.0 * 17.0; + //~^ neg_multiply + + 0.0 + 0.0 * -1.0; + //~^ neg_multiply + + 3.0_f32 as f64 * -1.0; + //~^ neg_multiply + (3.0_f32 as f64) * -1.0; + //~^ neg_multiply + + -1.0 * -1.0; // should be ok +} diff --git a/tests/ui/neg_multiply.stderr b/tests/ui/neg_multiply.stderr index 9efa5d3ba1f1d..2ef7e32ce05e1 100644 --- a/tests/ui/neg_multiply.stderr +++ b/tests/ui/neg_multiply.stderr @@ -49,5 +49,53 @@ error: this multiplication by -1 can be written more succinctly LL | (3_usize as i32) * -1; | ^^^^^^^^^^^^^^^^^^^^^ help: consider using: `-(3_usize as i32)` -error: aborting due to 8 previous errors +error: this multiplication by -1 can be written more succinctly + --> tests/ui/neg_multiply.rs:60:5 + | +LL | x * -1.0; + | ^^^^^^^^ help: consider using: `-x` + +error: this multiplication by -1 can be written more succinctly + --> tests/ui/neg_multiply.rs:63:5 + | +LL | -1.0 * x; + | ^^^^^^^^ help: consider using: `-x` + +error: this multiplication by -1 can be written more succinctly + --> tests/ui/neg_multiply.rs:66:13 + | +LL | 100.0 + x * -1.0; + | ^^^^^^^^ help: consider using: `-x` + +error: this multiplication by -1 can be written more succinctly + --> tests/ui/neg_multiply.rs:69:5 + | +LL | (100.0 + x) * -1.0; + | ^^^^^^^^^^^^^^^^^^ help: consider using: `-(100.0 + x)` + +error: this multiplication by -1 can be written more succinctly + --> tests/ui/neg_multiply.rs:72:5 + | +LL | -1.0 * 17.0; + | ^^^^^^^^^^^ help: consider using: `-17.0` + +error: this multiplication by -1 can be written more succinctly + --> tests/ui/neg_multiply.rs:75:11 + | +LL | 0.0 + 0.0 * -1.0; + | ^^^^^^^^^^ help: consider using: `-0.0` + +error: this multiplication by -1 can be written more succinctly + --> tests/ui/neg_multiply.rs:78:5 + | +LL | 3.0_f32 as f64 * -1.0; + | ^^^^^^^^^^^^^^^^^^^^^ help: consider using: `-(3.0_f32 as f64)` + +error: this multiplication by -1 can be written more succinctly + --> tests/ui/neg_multiply.rs:80:5 + | +LL | (3.0_f32 as f64) * -1.0; + | ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `-(3.0_f32 as f64)` + +error: aborting due to 16 previous errors diff --git a/tests/ui/no_mangle_with_rust_abi.rs b/tests/ui/no_mangle_with_rust_abi.rs index 0d09b3ceecde7..f4248ffc0f4d0 100644 --- a/tests/ui/no_mangle_with_rust_abi.rs +++ b/tests/ui/no_mangle_with_rust_abi.rs @@ -43,7 +43,7 @@ extern "C" fn c_abi_fn(arg_one: u32, arg_two: usize) {} extern "C" fn c_abi_fn_again(arg_one: u32, arg_two: usize) {} -extern "C" { +unsafe extern "C" { fn c_abi_in_block(arg_one: u32, arg_two: usize); } diff --git a/tests/ui/non_canonical_partial_ord_impl.fixed b/tests/ui/non_canonical_partial_ord_impl.fixed index 8774c666db11f..23dbee5a08488 100644 --- a/tests/ui/non_canonical_partial_ord_impl.fixed +++ b/tests/ui/non_canonical_partial_ord_impl.fixed @@ -162,3 +162,36 @@ impl PartialOrd for I { return Some(self.cmp(other)); } } + +// #13640, do not lint + +#[derive(Eq, PartialEq)] +struct J(u32); + +impl Ord for J { + fn cmp(&self, other: &Self) -> Ordering { + todo!(); + } +} + +impl PartialOrd for J { + fn partial_cmp(&self, other: &Self) -> Option { + self.cmp(other).into() + } +} + +// #13640, check that a simple `.into()` does not obliterate the lint + +#[derive(Eq, PartialEq)] +struct K(u32); + +impl Ord for K { + fn cmp(&self, other: &Self) -> Ordering { + todo!(); + } +} + +impl PartialOrd for K { + //~^ non_canonical_partial_ord_impl + fn partial_cmp(&self, other: &Self) -> Option { Some(self.cmp(other)) } +} diff --git a/tests/ui/non_canonical_partial_ord_impl.rs b/tests/ui/non_canonical_partial_ord_impl.rs index 568b97c8fff7b..12f055a542b89 100644 --- a/tests/ui/non_canonical_partial_ord_impl.rs +++ b/tests/ui/non_canonical_partial_ord_impl.rs @@ -166,3 +166,38 @@ impl PartialOrd for I { return Some(self.cmp(other)); } } + +// #13640, do not lint + +#[derive(Eq, PartialEq)] +struct J(u32); + +impl Ord for J { + fn cmp(&self, other: &Self) -> Ordering { + todo!(); + } +} + +impl PartialOrd for J { + fn partial_cmp(&self, other: &Self) -> Option { + self.cmp(other).into() + } +} + +// #13640, check that a simple `.into()` does not obliterate the lint + +#[derive(Eq, PartialEq)] +struct K(u32); + +impl Ord for K { + fn cmp(&self, other: &Self) -> Ordering { + todo!(); + } +} + +impl PartialOrd for K { + //~^ non_canonical_partial_ord_impl + fn partial_cmp(&self, other: &Self) -> Option { + Ordering::Greater.into() + } +} diff --git a/tests/ui/non_canonical_partial_ord_impl.stderr b/tests/ui/non_canonical_partial_ord_impl.stderr index 86845df4ea906..c7de968588f8b 100644 --- a/tests/ui/non_canonical_partial_ord_impl.stderr +++ b/tests/ui/non_canonical_partial_ord_impl.stderr @@ -31,5 +31,18 @@ LL - fn partial_cmp(&self, _: &Self) -> Option { LL + fn partial_cmp(&self, other: &Self) -> Option { Some(self.cmp(other)) } | -error: aborting due to 2 previous errors +error: non-canonical implementation of `partial_cmp` on an `Ord` type + --> tests/ui/non_canonical_partial_ord_impl.rs:198:1 + | +LL | / impl PartialOrd for K { +LL | | +LL | | fn partial_cmp(&self, other: &Self) -> Option { + | | _____________________________________________________________- +LL | || Ordering::Greater.into() +LL | || } + | ||_____- help: change this to: `{ Some(self.cmp(other)) }` +LL | | } + | |__^ + +error: aborting due to 3 previous errors diff --git a/tests/ui/non_expressive_names.rs b/tests/ui/non_expressive_names.rs index b772c754f8b76..3f34dff563d26 100644 --- a/tests/ui/non_expressive_names.rs +++ b/tests/ui/non_expressive_names.rs @@ -1,5 +1,4 @@ -#![warn(clippy::all)] -#![allow(unused, clippy::println_empty_string, non_snake_case, clippy::let_unit_value)] +#![allow(clippy::println_empty_string, non_snake_case, clippy::let_unit_value)] #[derive(Clone, Debug)] enum MaybeInst { diff --git a/tests/ui/non_expressive_names.stderr b/tests/ui/non_expressive_names.stderr index 3bd77a730fe78..11b12d2c5f103 100644 --- a/tests/ui/non_expressive_names.stderr +++ b/tests/ui/non_expressive_names.stderr @@ -1,5 +1,5 @@ error: consider choosing a more descriptive name - --> tests/ui/non_expressive_names.rs:28:9 + --> tests/ui/non_expressive_names.rs:27:9 | LL | let _1 = 1; | ^^ @@ -8,31 +8,31 @@ LL | let _1 = 1; = help: to override `-D warnings` add `#[allow(clippy::just_underscores_and_digits)]` error: consider choosing a more descriptive name - --> tests/ui/non_expressive_names.rs:30:9 + --> tests/ui/non_expressive_names.rs:29:9 | LL | let ____1 = 1; | ^^^^^ error: consider choosing a more descriptive name - --> tests/ui/non_expressive_names.rs:32:9 + --> tests/ui/non_expressive_names.rs:31:9 | LL | let __1___2 = 12; | ^^^^^^^ error: consider choosing a more descriptive name - --> tests/ui/non_expressive_names.rs:54:13 + --> tests/ui/non_expressive_names.rs:53:13 | LL | let _1 = 1; | ^^ error: consider choosing a more descriptive name - --> tests/ui/non_expressive_names.rs:56:13 + --> tests/ui/non_expressive_names.rs:55:13 | LL | let ____1 = 1; | ^^^^^ error: consider choosing a more descriptive name - --> tests/ui/non_expressive_names.rs:58:13 + --> tests/ui/non_expressive_names.rs:57:13 | LL | let __1___2 = 12; | ^^^^^^^ diff --git a/tests/ui/non_send_fields_in_send_ty.rs b/tests/ui/non_send_fields_in_send_ty.rs index 046ea70b08f16..31778f7450989 100644 --- a/tests/ui/non_send_fields_in_send_ty.rs +++ b/tests/ui/non_send_fields_in_send_ty.rs @@ -35,7 +35,7 @@ unsafe impl Send for ArcGuard {} //~^ ERROR: some fields in `ArcGuard` are not safe to be sent to another thread // rusb / RUSTSEC-2020-0098 -extern "C" { +unsafe extern "C" { type libusb_device_handle; } @@ -90,7 +90,7 @@ unsafe impl Send for MultiParam {} //~^ ERROR: some fields in `MultiParam` are not safe to be sent to another thread // Tests for raw pointer heuristic -extern "C" { +unsafe extern "C" { type NonSend; } diff --git a/tests/ui/non_std_lazy_static/non_std_lazy_static_fixable.fixed b/tests/ui/non_std_lazy_static/non_std_lazy_static_fixable.fixed index f7c56b6fffe81..2b30c8f984ebe 100644 --- a/tests/ui/non_std_lazy_static/non_std_lazy_static_fixable.fixed +++ b/tests/ui/non_std_lazy_static/non_std_lazy_static_fixable.fixed @@ -9,16 +9,16 @@ use once_cell::sync::Lazy; fn main() {} static LAZY_FOO: std::sync::LazyLock = std::sync::LazyLock::new(|| "foo".to_uppercase()); -//~^ ERROR: this type has been superceded by `LazyLock` in the standard library +//~^ ERROR: this type has been superseded by `LazyLock` in the standard library static LAZY_BAR: std::sync::LazyLock = std::sync::LazyLock::new(|| { - //~^ ERROR: this type has been superceded by `LazyLock` in the standard library + //~^ ERROR: this type has been superseded by `LazyLock` in the standard library let x = "bar"; x.to_uppercase() }); static LAZY_BAZ: std::sync::LazyLock = { std::sync::LazyLock::new(|| "baz".to_uppercase()) }; -//~^ ERROR: this type has been superceded by `LazyLock` in the standard library +//~^ ERROR: this type has been superseded by `LazyLock` in the standard library static LAZY_QUX: std::sync::LazyLock = { - //~^ ERROR: this type has been superceded by `LazyLock` in the standard library + //~^ ERROR: this type has been superseded by `LazyLock` in the standard library if "qux".len() == 3 { std::sync::LazyLock::new(|| "qux".to_uppercase()) } else if "qux".is_ascii() { @@ -39,11 +39,11 @@ mod once_cell_lazy_with_fns { use once_cell::sync::Lazy; static LAZY_FOO: std::sync::LazyLock = std::sync::LazyLock::new(|| "foo".to_uppercase()); - //~^ ERROR: this type has been superceded by `LazyLock` in the standard library + //~^ ERROR: this type has been superseded by `LazyLock` in the standard library static LAZY_BAR: std::sync::LazyLock = std::sync::LazyLock::new(|| "bar".to_uppercase()); - //~^ ERROR: this type has been superceded by `LazyLock` in the standard library + //~^ ERROR: this type has been superseded by `LazyLock` in the standard library static mut LAZY_BAZ: std::sync::LazyLock = std::sync::LazyLock::new(|| "baz".to_uppercase()); - //~^ ERROR: this type has been superceded by `LazyLock` in the standard library + //~^ ERROR: this type has been superseded by `LazyLock` in the standard library fn calling_replaceable_fns() { let _ = std::sync::LazyLock::force(&LAZY_FOO); diff --git a/tests/ui/non_std_lazy_static/non_std_lazy_static_fixable.rs b/tests/ui/non_std_lazy_static/non_std_lazy_static_fixable.rs index 90bc428137cea..c52338eee83cb 100644 --- a/tests/ui/non_std_lazy_static/non_std_lazy_static_fixable.rs +++ b/tests/ui/non_std_lazy_static/non_std_lazy_static_fixable.rs @@ -9,16 +9,16 @@ use once_cell::sync::Lazy; fn main() {} static LAZY_FOO: Lazy = Lazy::new(|| "foo".to_uppercase()); -//~^ ERROR: this type has been superceded by `LazyLock` in the standard library +//~^ ERROR: this type has been superseded by `LazyLock` in the standard library static LAZY_BAR: Lazy = Lazy::new(|| { - //~^ ERROR: this type has been superceded by `LazyLock` in the standard library + //~^ ERROR: this type has been superseded by `LazyLock` in the standard library let x = "bar"; x.to_uppercase() }); static LAZY_BAZ: Lazy = { Lazy::new(|| "baz".to_uppercase()) }; -//~^ ERROR: this type has been superceded by `LazyLock` in the standard library +//~^ ERROR: this type has been superseded by `LazyLock` in the standard library static LAZY_QUX: Lazy = { - //~^ ERROR: this type has been superceded by `LazyLock` in the standard library + //~^ ERROR: this type has been superseded by `LazyLock` in the standard library if "qux".len() == 3 { Lazy::new(|| "qux".to_uppercase()) } else if "qux".is_ascii() { @@ -39,11 +39,11 @@ mod once_cell_lazy_with_fns { use once_cell::sync::Lazy; static LAZY_FOO: Lazy = Lazy::new(|| "foo".to_uppercase()); - //~^ ERROR: this type has been superceded by `LazyLock` in the standard library + //~^ ERROR: this type has been superseded by `LazyLock` in the standard library static LAZY_BAR: Lazy = Lazy::new(|| "bar".to_uppercase()); - //~^ ERROR: this type has been superceded by `LazyLock` in the standard library + //~^ ERROR: this type has been superseded by `LazyLock` in the standard library static mut LAZY_BAZ: Lazy = Lazy::new(|| "baz".to_uppercase()); - //~^ ERROR: this type has been superceded by `LazyLock` in the standard library + //~^ ERROR: this type has been superseded by `LazyLock` in the standard library fn calling_replaceable_fns() { let _ = Lazy::force(&LAZY_FOO); diff --git a/tests/ui/non_std_lazy_static/non_std_lazy_static_fixable.stderr b/tests/ui/non_std_lazy_static/non_std_lazy_static_fixable.stderr index 333052ae1c110..bb80cd11c7199 100644 --- a/tests/ui/non_std_lazy_static/non_std_lazy_static_fixable.stderr +++ b/tests/ui/non_std_lazy_static/non_std_lazy_static_fixable.stderr @@ -1,4 +1,4 @@ -error: this type has been superceded by `LazyLock` in the standard library +error: this type has been superseded by `LazyLock` in the standard library --> tests/ui/non_std_lazy_static/non_std_lazy_static_fixable.rs:11:18 | LL | static LAZY_FOO: Lazy = Lazy::new(|| "foo".to_uppercase()); @@ -12,7 +12,7 @@ LL - static LAZY_FOO: Lazy = Lazy::new(|| "foo".to_uppercase()); LL + static LAZY_FOO: std::sync::LazyLock = std::sync::LazyLock::new(|| "foo".to_uppercase()); | -error: this type has been superceded by `LazyLock` in the standard library +error: this type has been superseded by `LazyLock` in the standard library --> tests/ui/non_std_lazy_static/non_std_lazy_static_fixable.rs:13:18 | LL | static LAZY_BAR: Lazy = Lazy::new(|| { @@ -24,7 +24,7 @@ LL - static LAZY_BAR: Lazy = Lazy::new(|| { LL + static LAZY_BAR: std::sync::LazyLock = std::sync::LazyLock::new(|| { | -error: this type has been superceded by `LazyLock` in the standard library +error: this type has been superseded by `LazyLock` in the standard library --> tests/ui/non_std_lazy_static/non_std_lazy_static_fixable.rs:18:18 | LL | static LAZY_BAZ: Lazy = { Lazy::new(|| "baz".to_uppercase()) }; @@ -36,7 +36,7 @@ LL - static LAZY_BAZ: Lazy = { Lazy::new(|| "baz".to_uppercase()) }; LL + static LAZY_BAZ: std::sync::LazyLock = { std::sync::LazyLock::new(|| "baz".to_uppercase()) }; | -error: this type has been superceded by `LazyLock` in the standard library +error: this type has been superseded by `LazyLock` in the standard library --> tests/ui/non_std_lazy_static/non_std_lazy_static_fixable.rs:20:18 | LL | static LAZY_QUX: Lazy = { @@ -54,7 +54,7 @@ LL | } else { LL ~ std::sync::LazyLock::new(|| "qux".to_string()) | -error: this type has been superceded by `LazyLock` in the standard library +error: this type has been superseded by `LazyLock` in the standard library --> tests/ui/non_std_lazy_static/non_std_lazy_static_fixable.rs:41:22 | LL | static LAZY_FOO: Lazy = Lazy::new(|| "foo".to_uppercase()); @@ -69,7 +69,7 @@ LL | fn calling_replaceable_fns() { LL ~ let _ = std::sync::LazyLock::force(&LAZY_FOO); | -error: this type has been superceded by `LazyLock` in the standard library +error: this type has been superseded by `LazyLock` in the standard library --> tests/ui/non_std_lazy_static/non_std_lazy_static_fixable.rs:43:22 | LL | static LAZY_BAR: Lazy = Lazy::new(|| "bar".to_uppercase()); @@ -84,7 +84,7 @@ LL | let _ = Lazy::force(&LAZY_FOO); LL ~ let _ = std::sync::LazyLock::force(&LAZY_BAR); | -error: this type has been superceded by `LazyLock` in the standard library +error: this type has been superseded by `LazyLock` in the standard library --> tests/ui/non_std_lazy_static/non_std_lazy_static_fixable.rs:45:26 | LL | static mut LAZY_BAZ: Lazy = Lazy::new(|| "baz".to_uppercase()); diff --git a/tests/ui/non_std_lazy_static/non_std_lazy_static_unfixable.rs b/tests/ui/non_std_lazy_static/non_std_lazy_static_unfixable.rs index 34f8dd1ccb2ea..acc8c04678f50 100644 --- a/tests/ui/non_std_lazy_static/non_std_lazy_static_unfixable.rs +++ b/tests/ui/non_std_lazy_static/non_std_lazy_static_unfixable.rs @@ -9,11 +9,11 @@ mod once_cell_lazy { use once_cell::sync::Lazy; static LAZY_FOO: Lazy = Lazy::new(|| "foo".to_uppercase()); - //~^ ERROR: this type has been superceded by `LazyLock` in the standard library + //~^ ERROR: this type has been superseded by `LazyLock` in the standard library static mut LAZY_BAR: Lazy = Lazy::new(|| "bar".to_uppercase()); - //~^ ERROR: this type has been superceded by `LazyLock` in the standard library + //~^ ERROR: this type has been superseded by `LazyLock` in the standard library static mut LAZY_BAZ: Lazy = Lazy::new(|| "baz".to_uppercase()); - //~^ ERROR: this type has been superceded by `LazyLock` in the standard library + //~^ ERROR: this type has been superseded by `LazyLock` in the standard library fn calling_irreplaceable_fns() { let _ = Lazy::get(&LAZY_FOO); @@ -31,13 +31,13 @@ mod lazy_static_lazy_static { lazy_static! { static ref LAZY_FOO: String = "foo".to_uppercase(); } - //~^^^ ERROR: this macro has been superceded by `std::sync::LazyLock` + //~^^^ ERROR: this macro has been superseded by `std::sync::LazyLock` lazy_static! { static ref LAZY_BAR: String = "bar".to_uppercase(); static ref LAZY_BAZ: String = "baz".to_uppercase(); } - //~^^^^ ERROR: this macro has been superceded by `std::sync::LazyLock` - //~| ERROR: this macro has been superceded by `std::sync::LazyLock` + //~^^^^ ERROR: this macro has been superseded by `std::sync::LazyLock` + //~| ERROR: this macro has been superseded by `std::sync::LazyLock` } fn main() {} diff --git a/tests/ui/non_std_lazy_static/non_std_lazy_static_unfixable.stderr b/tests/ui/non_std_lazy_static/non_std_lazy_static_unfixable.stderr index 216190ae4ca31..2c35cad6237ab 100644 --- a/tests/ui/non_std_lazy_static/non_std_lazy_static_unfixable.stderr +++ b/tests/ui/non_std_lazy_static/non_std_lazy_static_unfixable.stderr @@ -1,4 +1,4 @@ -error: this macro has been superceded by `std::sync::LazyLock` +error: this macro has been superseded by `std::sync::LazyLock` --> tests/ui/non_std_lazy_static/non_std_lazy_static_unfixable.rs:31:5 | LL | / lazy_static! { @@ -9,7 +9,7 @@ LL | | } = note: `-D clippy::non-std-lazy-statics` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::non_std_lazy_statics)]` -error: this macro has been superceded by `std::sync::LazyLock` +error: this macro has been superseded by `std::sync::LazyLock` --> tests/ui/non_std_lazy_static/non_std_lazy_static_unfixable.rs:35:5 | LL | / lazy_static! { @@ -18,7 +18,7 @@ LL | | static ref LAZY_BAZ: String = "baz".to_uppercase(); LL | | } | |_____^ -error: this macro has been superceded by `std::sync::LazyLock` +error: this macro has been superseded by `std::sync::LazyLock` --> tests/ui/non_std_lazy_static/non_std_lazy_static_unfixable.rs:35:5 | LL | / lazy_static! { @@ -29,7 +29,7 @@ LL | | } | = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` -error: this type has been superceded by `LazyLock` in the standard library +error: this type has been superseded by `LazyLock` in the standard library --> tests/ui/non_std_lazy_static/non_std_lazy_static_unfixable.rs:11:22 | LL | static LAZY_FOO: Lazy = Lazy::new(|| "foo".to_uppercase()); @@ -41,7 +41,7 @@ LL - static LAZY_FOO: Lazy = Lazy::new(|| "foo".to_uppercase()); LL + static LAZY_FOO: std::sync::LazyLock = std::sync::LazyLock::new(|| "foo".to_uppercase()); | -error: this type has been superceded by `LazyLock` in the standard library +error: this type has been superseded by `LazyLock` in the standard library --> tests/ui/non_std_lazy_static/non_std_lazy_static_unfixable.rs:13:26 | LL | static mut LAZY_BAR: Lazy = Lazy::new(|| "bar".to_uppercase()); @@ -53,7 +53,7 @@ LL - static mut LAZY_BAR: Lazy = Lazy::new(|| "bar".to_uppercase()); LL + static mut LAZY_BAR: std::sync::LazyLock = std::sync::LazyLock::new(|| "bar".to_uppercase()); | -error: this type has been superceded by `LazyLock` in the standard library +error: this type has been superseded by `LazyLock` in the standard library --> tests/ui/non_std_lazy_static/non_std_lazy_static_unfixable.rs:15:26 | LL | static mut LAZY_BAZ: Lazy = Lazy::new(|| "baz".to_uppercase()); diff --git a/tests/ui/nonminimal_bool.rs b/tests/ui/nonminimal_bool.rs index a155ff3508be0..1eecc3dee3dc5 100644 --- a/tests/ui/nonminimal_bool.rs +++ b/tests/ui/nonminimal_bool.rs @@ -216,3 +216,23 @@ fn issue14184(a: f32, b: bool) { println!("Hi"); } } + +mod issue14404 { + enum TyKind { + Ref(i32, i32, i32), + Other, + } + + struct Expr; + + fn is_mutable(expr: &Expr) -> bool { + todo!() + } + + fn should_not_give_macro(ty: TyKind, expr: Expr) { + if !(matches!(ty, TyKind::Ref(_, _, _)) && !is_mutable(&expr)) { + //~^ nonminimal_bool + todo!() + } + } +} diff --git a/tests/ui/nonminimal_bool.stderr b/tests/ui/nonminimal_bool.stderr index 336cce40abf0d..0e3e4cf7988e2 100644 --- a/tests/ui/nonminimal_bool.stderr +++ b/tests/ui/nonminimal_bool.stderr @@ -227,7 +227,13 @@ error: this boolean expression can be simplified --> tests/ui/nonminimal_bool.rs:214:8 | LL | if !(a < 2.0 && !b) { - | ^^^^^^^^^^^^^^^^ help: try: `!(a < 2.0) || b` + | ^^^^^^^^^^^^^^^^ help: try: `a >= 2.0 || b` -error: aborting due to 30 previous errors +error: this boolean expression can be simplified + --> tests/ui/nonminimal_bool.rs:233:12 + | +LL | if !(matches!(ty, TyKind::Ref(_, _, _)) && !is_mutable(&expr)) { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `!matches!(ty, TyKind::Ref(_, _, _)) || is_mutable(&expr)` + +error: aborting due to 31 previous errors diff --git a/tests/ui/obfuscated_if_else.fixed b/tests/ui/obfuscated_if_else.fixed index 66f5070787b09..70ae090626b96 100644 --- a/tests/ui/obfuscated_if_else.fixed +++ b/tests/ui/obfuscated_if_else.fixed @@ -46,6 +46,18 @@ fn main() { let partial = true.then_some(1); partial.unwrap_or_else(|| n * 2); // not lint + + if true { () } else { Default::default() }; + //~^ obfuscated_if_else + + if true { () } else { Default::default() }; + //~^ obfuscated_if_else + + if true { 1 } else { Default::default() }; + //~^ obfuscated_if_else + + if true { 1 } else { Default::default() }; + //~^ obfuscated_if_else } fn issue11141() { diff --git a/tests/ui/obfuscated_if_else.rs b/tests/ui/obfuscated_if_else.rs index 4efd740eb60bb..8e1f57ca2c026 100644 --- a/tests/ui/obfuscated_if_else.rs +++ b/tests/ui/obfuscated_if_else.rs @@ -46,6 +46,18 @@ fn main() { let partial = true.then_some(1); partial.unwrap_or_else(|| n * 2); // not lint + + true.then_some(()).unwrap_or_default(); + //~^ obfuscated_if_else + + true.then(|| ()).unwrap_or_default(); + //~^ obfuscated_if_else + + true.then_some(1).unwrap_or_default(); + //~^ obfuscated_if_else + + true.then(|| 1).unwrap_or_default(); + //~^ obfuscated_if_else } fn issue11141() { diff --git a/tests/ui/obfuscated_if_else.stderr b/tests/ui/obfuscated_if_else.stderr index d676c25669570..0de7259d8bb82 100644 --- a/tests/ui/obfuscated_if_else.stderr +++ b/tests/ui/obfuscated_if_else.stderr @@ -68,52 +68,76 @@ LL | true.then_some(1).unwrap_or_else(Default::default); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `if true { 1 } else { Default::default() }` error: this method chain can be written more clearly with `if .. else ..` - --> tests/ui/obfuscated_if_else.rs:53:13 + --> tests/ui/obfuscated_if_else.rs:50:5 + | +LL | true.then_some(()).unwrap_or_default(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `if true { () } else { Default::default() }` + +error: this method chain can be written more clearly with `if .. else ..` + --> tests/ui/obfuscated_if_else.rs:53:5 + | +LL | true.then(|| ()).unwrap_or_default(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `if true { () } else { Default::default() }` + +error: this method chain can be written more clearly with `if .. else ..` + --> tests/ui/obfuscated_if_else.rs:56:5 + | +LL | true.then_some(1).unwrap_or_default(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `if true { 1 } else { Default::default() }` + +error: this method chain can be written more clearly with `if .. else ..` + --> tests/ui/obfuscated_if_else.rs:59:5 + | +LL | true.then(|| 1).unwrap_or_default(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `if true { 1 } else { Default::default() }` + +error: this method chain can be written more clearly with `if .. else ..` + --> tests/ui/obfuscated_if_else.rs:65:13 | LL | let _ = true.then_some(40).unwrap_or(17) | 2; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(if true { 40 } else { 17 })` error: this method chain can be written more clearly with `if .. else ..` - --> tests/ui/obfuscated_if_else.rs:57:13 + --> tests/ui/obfuscated_if_else.rs:69:13 | LL | let _ = true.then_some(30).unwrap_or(17) | true.then_some(2).unwrap_or(3) | true.then_some(10).unwrap_or(1); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(if true { 30 } else { 17 })` error: this method chain can be written more clearly with `if .. else ..` - --> tests/ui/obfuscated_if_else.rs:57:48 + --> tests/ui/obfuscated_if_else.rs:69:48 | LL | let _ = true.then_some(30).unwrap_or(17) | true.then_some(2).unwrap_or(3) | true.then_some(10).unwrap_or(1); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `if true { 2 } else { 3 }` error: this method chain can be written more clearly with `if .. else ..` - --> tests/ui/obfuscated_if_else.rs:57:81 + --> tests/ui/obfuscated_if_else.rs:69:81 | LL | let _ = true.then_some(30).unwrap_or(17) | true.then_some(2).unwrap_or(3) | true.then_some(10).unwrap_or(1); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `if true { 10 } else { 1 }` error: this method chain can be written more clearly with `if .. else ..` - --> tests/ui/obfuscated_if_else.rs:63:17 + --> tests/ui/obfuscated_if_else.rs:75:17 | LL | let _ = 2 | true.then_some(40).unwrap_or(17); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `if true { 40 } else { 17 }` error: this method chain can be written more clearly with `if .. else ..` - --> tests/ui/obfuscated_if_else.rs:67:13 + --> tests/ui/obfuscated_if_else.rs:79:13 | LL | let _ = true.then_some(42).unwrap_or(17) as u8; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `if true { 42 } else { 17 }` error: this method chain can be written more clearly with `if .. else ..` - --> tests/ui/obfuscated_if_else.rs:71:14 + --> tests/ui/obfuscated_if_else.rs:83:14 | LL | let _ = *true.then_some(&42).unwrap_or(&17); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `if true { &42 } else { &17 }` error: this method chain can be written more clearly with `if .. else ..` - --> tests/ui/obfuscated_if_else.rs:75:14 + --> tests/ui/obfuscated_if_else.rs:87:14 | LL | let _ = *true.then_some(&42).unwrap_or(&17) as u8; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `if true { &42 } else { &17 }` -error: aborting due to 19 previous errors +error: aborting due to 23 previous errors diff --git a/tests/ui/op_ref.fixed b/tests/ui/op_ref.fixed index 46a59e419cce0..f412190b9fd9e 100644 --- a/tests/ui/op_ref.fixed +++ b/tests/ui/op_ref.fixed @@ -98,3 +98,15 @@ impl Mul for A { self * &rhs } } + +mod issue_2597 { + fn ex1() { + let a: &str = "abc"; + let b: String = "abc".to_owned(); + println!("{}", a > &b); + } + + pub fn ex2(array: &[T], val: &T, idx: usize) -> bool { + &array[idx] < val + } +} diff --git a/tests/ui/op_ref.rs b/tests/ui/op_ref.rs index e10840ff4b97b..a4bbd86c7e95b 100644 --- a/tests/ui/op_ref.rs +++ b/tests/ui/op_ref.rs @@ -98,3 +98,15 @@ impl Mul for A { self * &rhs } } + +mod issue_2597 { + fn ex1() { + let a: &str = "abc"; + let b: String = "abc".to_owned(); + println!("{}", a > &b); + } + + pub fn ex2(array: &[T], val: &T, idx: usize) -> bool { + &array[idx] < val + } +} diff --git a/tests/ui/option_if_let_else.fixed b/tests/ui/option_if_let_else.fixed index ee30988960175..fe3ac9e8f92c3 100644 --- a/tests/ui/option_if_let_else.fixed +++ b/tests/ui/option_if_let_else.fixed @@ -288,3 +288,17 @@ mod issue13964 { }; } } + +mod issue11059 { + use std::fmt::Debug; + + fn box_coercion_unsize(o: Option) -> Box { + if let Some(o) = o { Box::new(o) } else { Box::new("foo") } + } + + static S: String = String::new(); + + fn deref_with_overload(o: Option<&str>) -> &str { + if let Some(o) = o { o } else { &S } + } +} diff --git a/tests/ui/option_if_let_else.rs b/tests/ui/option_if_let_else.rs index 525a5df4371c2..5b7498bc8e23b 100644 --- a/tests/ui/option_if_let_else.rs +++ b/tests/ui/option_if_let_else.rs @@ -351,3 +351,17 @@ mod issue13964 { }; } } + +mod issue11059 { + use std::fmt::Debug; + + fn box_coercion_unsize(o: Option) -> Box { + if let Some(o) = o { Box::new(o) } else { Box::new("foo") } + } + + static S: String = String::new(); + + fn deref_with_overload(o: Option<&str>) -> &str { + if let Some(o) = o { o } else { &S } + } +} diff --git a/tests/ui/or_fun_call.fixed b/tests/ui/or_fun_call.fixed index 1794ac57fe5b1..a1119d75c231b 100644 --- a/tests/ui/or_fun_call.fixed +++ b/tests/ui/or_fun_call.fixed @@ -179,16 +179,20 @@ fn f() -> Option<()> { mod issue6675 { unsafe fn ptr_to_ref<'a, T>(p: *const T) -> &'a T { - #[allow(unused)] - let x = vec![0; 1000]; // future-proofing, make this function expensive. - &*p + unsafe { + #[allow(unused)] + let x = vec![0; 1000]; // future-proofing, make this function expensive. + &*p + } } unsafe fn foo() { - let s = "test".to_owned(); - let s = &s as *const _; - None.unwrap_or_else(|| ptr_to_ref(s)); - //~^ or_fun_call + unsafe { + let s = "test".to_owned(); + let s = &s as *const _; + None.unwrap_or_else(|| ptr_to_ref(s)); + //~^ or_fun_call + } } fn bar() { diff --git a/tests/ui/or_fun_call.rs b/tests/ui/or_fun_call.rs index 256db343c0573..a7cd632bf166f 100644 --- a/tests/ui/or_fun_call.rs +++ b/tests/ui/or_fun_call.rs @@ -179,16 +179,20 @@ fn f() -> Option<()> { mod issue6675 { unsafe fn ptr_to_ref<'a, T>(p: *const T) -> &'a T { - #[allow(unused)] - let x = vec![0; 1000]; // future-proofing, make this function expensive. - &*p + unsafe { + #[allow(unused)] + let x = vec![0; 1000]; // future-proofing, make this function expensive. + &*p + } } unsafe fn foo() { - let s = "test".to_owned(); - let s = &s as *const _; - None.unwrap_or(ptr_to_ref(s)); - //~^ or_fun_call + unsafe { + let s = "test".to_owned(); + let s = &s as *const _; + None.unwrap_or(ptr_to_ref(s)); + //~^ or_fun_call + } } fn bar() { diff --git a/tests/ui/or_fun_call.stderr b/tests/ui/or_fun_call.stderr index 93c87b2f12cde..35bda7e4d3314 100644 --- a/tests/ui/or_fun_call.stderr +++ b/tests/ui/or_fun_call.stderr @@ -125,91 +125,91 @@ LL | let _ = Some("a".to_string()).or(Some("b".to_string())); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `or_else(|| Some("b".to_string()))` error: function call inside of `unwrap_or` - --> tests/ui/or_fun_call.rs:190:14 + --> tests/ui/or_fun_call.rs:193:18 | -LL | None.unwrap_or(ptr_to_ref(s)); - | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|| ptr_to_ref(s))` +LL | None.unwrap_or(ptr_to_ref(s)); + | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|| ptr_to_ref(s))` error: function call inside of `unwrap_or` - --> tests/ui/or_fun_call.rs:197:14 + --> tests/ui/or_fun_call.rs:201:14 | LL | None.unwrap_or(unsafe { ptr_to_ref(s) }); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|| unsafe { ptr_to_ref(s) })` error: function call inside of `unwrap_or` - --> tests/ui/or_fun_call.rs:200:14 + --> tests/ui/or_fun_call.rs:204:14 | LL | None.unwrap_or( unsafe { ptr_to_ref(s) } ); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|| unsafe { ptr_to_ref(s) })` error: function call inside of `map_or` - --> tests/ui/or_fun_call.rs:276:25 + --> tests/ui/or_fun_call.rs:280:25 | LL | let _ = Some(4).map_or(g(), |v| v); | ^^^^^^^^^^^^^^^^^^ help: try: `map_or_else(g, |v| v)` error: function call inside of `map_or` - --> tests/ui/or_fun_call.rs:278:25 + --> tests/ui/or_fun_call.rs:282:25 | LL | let _ = Some(4).map_or(g(), f); | ^^^^^^^^^^^^^^ help: try: `map_or_else(g, f)` error: use of `unwrap_or_else` to construct default value - --> tests/ui/or_fun_call.rs:310:18 + --> tests/ui/or_fun_call.rs:314:18 | LL | with_new.unwrap_or_else(Vec::new); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_default()` error: use of `unwrap_or_else` to construct default value - --> tests/ui/or_fun_call.rs:314:28 + --> tests/ui/or_fun_call.rs:318:28 | LL | with_default_trait.unwrap_or_else(Default::default); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_default()` error: use of `unwrap_or_else` to construct default value - --> tests/ui/or_fun_call.rs:318:27 + --> tests/ui/or_fun_call.rs:322:27 | LL | with_default_type.unwrap_or_else(u64::default); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_default()` error: use of `unwrap_or_else` to construct default value - --> tests/ui/or_fun_call.rs:322:22 + --> tests/ui/or_fun_call.rs:326:22 | LL | real_default.unwrap_or_else(::default); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_default()` error: use of `or_insert_with` to construct default value - --> tests/ui/or_fun_call.rs:326:23 + --> tests/ui/or_fun_call.rs:330:23 | LL | map.entry(42).or_insert_with(String::new); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `or_default()` error: use of `or_insert_with` to construct default value - --> tests/ui/or_fun_call.rs:330:25 + --> tests/ui/or_fun_call.rs:334:25 | LL | btree.entry(42).or_insert_with(String::new); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `or_default()` error: use of `unwrap_or_else` to construct default value - --> tests/ui/or_fun_call.rs:334:25 + --> tests/ui/or_fun_call.rs:338:25 | LL | let _ = stringy.unwrap_or_else(String::new); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_default()` error: function call inside of `unwrap_or` - --> tests/ui/or_fun_call.rs:376:17 + --> tests/ui/or_fun_call.rs:380:17 | LL | let _ = opt.unwrap_or({ f() }); // suggest `.unwrap_or_else(f)` | ^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(f)` error: function call inside of `unwrap_or` - --> tests/ui/or_fun_call.rs:381:17 + --> tests/ui/or_fun_call.rs:385:17 | LL | let _ = opt.unwrap_or(f() + 1); // suggest `.unwrap_or_else(|| f() + 1)` | ^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|| f() + 1)` error: function call inside of `unwrap_or` - --> tests/ui/or_fun_call.rs:386:17 + --> tests/ui/or_fun_call.rs:390:17 | LL | let _ = opt.unwrap_or({ | _________________^ @@ -229,19 +229,19 @@ LL ~ }); | error: function call inside of `map_or` - --> tests/ui/or_fun_call.rs:392:17 + --> tests/ui/or_fun_call.rs:396:17 | LL | let _ = opt.map_or(f() + 1, |v| v); // suggest `.map_or_else(|| f() + 1, |v| v)` | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `map_or_else(|| f() + 1, |v| v)` error: use of `unwrap_or` to construct default value - --> tests/ui/or_fun_call.rs:397:17 + --> tests/ui/or_fun_call.rs:401:17 | LL | let _ = opt.unwrap_or({ i32::default() }); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_default()` error: function call inside of `unwrap_or` - --> tests/ui/or_fun_call.rs:404:21 + --> tests/ui/or_fun_call.rs:408:21 | LL | let _ = opt_foo.unwrap_or(Foo { val: String::default() }); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|| Foo { val: String::default() })` diff --git a/tests/ui/pattern_type_mismatch/mutability.rs b/tests/ui/pattern_type_mismatch/mutability.rs index bdac3764bf167..643d8fedda984 100644 --- a/tests/ui/pattern_type_mismatch/mutability.rs +++ b/tests/ui/pattern_type_mismatch/mutability.rs @@ -1,5 +1,5 @@ -#![allow(clippy::all)] #![warn(clippy::pattern_type_mismatch)] +#![allow(clippy::single_match)] fn main() {} diff --git a/tests/ui/pattern_type_mismatch/pattern_alternatives.rs b/tests/ui/pattern_type_mismatch/pattern_alternatives.rs index 3c789f570b038..a1c447d258346 100644 --- a/tests/ui/pattern_type_mismatch/pattern_alternatives.rs +++ b/tests/ui/pattern_type_mismatch/pattern_alternatives.rs @@ -1,4 +1,3 @@ -#![allow(clippy::all)] #![warn(clippy::pattern_type_mismatch)] fn main() {} diff --git a/tests/ui/pattern_type_mismatch/pattern_alternatives.stderr b/tests/ui/pattern_type_mismatch/pattern_alternatives.stderr index 763f688ea8975..b3ae63ec031a4 100644 --- a/tests/ui/pattern_type_mismatch/pattern_alternatives.stderr +++ b/tests/ui/pattern_type_mismatch/pattern_alternatives.stderr @@ -1,5 +1,5 @@ error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_alternatives.rs:15:12 + --> tests/ui/pattern_type_mismatch/pattern_alternatives.rs:14:12 | LL | if let Value::B | Value::A(_) = ref_value {} | ^^^^^^^^^^^^^^^^^^^^^^ @@ -9,7 +9,7 @@ LL | if let Value::B | Value::A(_) = ref_value {} = help: to override `-D warnings` add `#[allow(clippy::pattern_type_mismatch)]` error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_alternatives.rs:18:34 + --> tests/ui/pattern_type_mismatch/pattern_alternatives.rs:17:34 | LL | if let &Value::B | &Value::A(Some(_)) = ref_value {} | ^^^^^^^ @@ -17,7 +17,7 @@ LL | if let &Value::B | &Value::A(Some(_)) = ref_value {} = help: explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_alternatives.rs:21:32 + --> tests/ui/pattern_type_mismatch/pattern_alternatives.rs:20:32 | LL | if let Value::B | Value::A(Some(_)) = *ref_value {} | ^^^^^^^ diff --git a/tests/ui/pattern_type_mismatch/pattern_structs.rs b/tests/ui/pattern_type_mismatch/pattern_structs.rs index 7fc53d591a917..c5e395c4084f2 100644 --- a/tests/ui/pattern_type_mismatch/pattern_structs.rs +++ b/tests/ui/pattern_type_mismatch/pattern_structs.rs @@ -1,4 +1,3 @@ -#![allow(clippy::all)] #![warn(clippy::pattern_type_mismatch)] fn main() {} diff --git a/tests/ui/pattern_type_mismatch/pattern_structs.stderr b/tests/ui/pattern_type_mismatch/pattern_structs.stderr index 70f7bdc389061..e18a88c2bf510 100644 --- a/tests/ui/pattern_type_mismatch/pattern_structs.stderr +++ b/tests/ui/pattern_type_mismatch/pattern_structs.stderr @@ -1,5 +1,5 @@ error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_structs.rs:13:9 + --> tests/ui/pattern_type_mismatch/pattern_structs.rs:12:9 | LL | let Struct { .. } = ref_value; | ^^^^^^^^^^^^^ @@ -9,7 +9,7 @@ LL | let Struct { .. } = ref_value; = help: to override `-D warnings` add `#[allow(clippy::pattern_type_mismatch)]` error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_structs.rs:16:33 + --> tests/ui/pattern_type_mismatch/pattern_structs.rs:15:33 | LL | if let &Struct { ref_inner: Some(_) } = ref_value {} | ^^^^^^^ @@ -17,7 +17,7 @@ LL | if let &Struct { ref_inner: Some(_) } = ref_value {} = help: explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_structs.rs:19:32 + --> tests/ui/pattern_type_mismatch/pattern_structs.rs:18:32 | LL | if let Struct { ref_inner: Some(_) } = *ref_value {} | ^^^^^^^ @@ -25,7 +25,7 @@ LL | if let Struct { ref_inner: Some(_) } = *ref_value {} = help: explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_structs.rs:37:12 + --> tests/ui/pattern_type_mismatch/pattern_structs.rs:36:12 | LL | if let StructEnum::Var { .. } = ref_value {} | ^^^^^^^^^^^^^^^^^^^^^^ @@ -33,7 +33,7 @@ LL | if let StructEnum::Var { .. } = ref_value {} = help: use `*` to dereference the match expression or explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_structs.rs:40:12 + --> tests/ui/pattern_type_mismatch/pattern_structs.rs:39:12 | LL | if let StructEnum::Var { inner_ref: Some(_) } = ref_value {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -41,7 +41,7 @@ LL | if let StructEnum::Var { inner_ref: Some(_) } = ref_value {} = help: use `*` to dereference the match expression or explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_structs.rs:43:42 + --> tests/ui/pattern_type_mismatch/pattern_structs.rs:42:42 | LL | if let &StructEnum::Var { inner_ref: Some(_) } = ref_value {} | ^^^^^^^ @@ -49,7 +49,7 @@ LL | if let &StructEnum::Var { inner_ref: Some(_) } = ref_value {} = help: explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_structs.rs:46:41 + --> tests/ui/pattern_type_mismatch/pattern_structs.rs:45:41 | LL | if let StructEnum::Var { inner_ref: Some(_) } = *ref_value {} | ^^^^^^^ @@ -57,7 +57,7 @@ LL | if let StructEnum::Var { inner_ref: Some(_) } = *ref_value {} = help: explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_structs.rs:49:12 + --> tests/ui/pattern_type_mismatch/pattern_structs.rs:48:12 | LL | if let StructEnum::Empty = ref_value {} | ^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/pattern_type_mismatch/pattern_tuples.rs b/tests/ui/pattern_type_mismatch/pattern_tuples.rs index ecd95d9ae2b3b..8bec5abc88f17 100644 --- a/tests/ui/pattern_type_mismatch/pattern_tuples.rs +++ b/tests/ui/pattern_type_mismatch/pattern_tuples.rs @@ -1,4 +1,3 @@ -#![allow(clippy::all)] #![warn(clippy::pattern_type_mismatch)] fn main() {} diff --git a/tests/ui/pattern_type_mismatch/pattern_tuples.stderr b/tests/ui/pattern_type_mismatch/pattern_tuples.stderr index d47c5d509c3fa..ee307be63c1a5 100644 --- a/tests/ui/pattern_type_mismatch/pattern_tuples.stderr +++ b/tests/ui/pattern_type_mismatch/pattern_tuples.stderr @@ -1,5 +1,5 @@ error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:11:9 + --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:10:9 | LL | let TupleStruct(_) = ref_value; | ^^^^^^^^^^^^^^ @@ -9,7 +9,7 @@ LL | let TupleStruct(_) = ref_value; = help: to override `-D warnings` add `#[allow(clippy::pattern_type_mismatch)]` error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:14:25 + --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:13:25 | LL | if let &TupleStruct(Some(_)) = ref_value {} | ^^^^^^^ @@ -17,7 +17,7 @@ LL | if let &TupleStruct(Some(_)) = ref_value {} = help: explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:17:24 + --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:16:24 | LL | if let TupleStruct(Some(_)) = *ref_value {} | ^^^^^^^ @@ -25,7 +25,7 @@ LL | if let TupleStruct(Some(_)) = *ref_value {} = help: explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:35:12 + --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:34:12 | LL | if let TupleEnum::Var(_) = ref_value {} | ^^^^^^^^^^^^^^^^^ @@ -33,7 +33,7 @@ LL | if let TupleEnum::Var(_) = ref_value {} = help: use `*` to dereference the match expression or explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:38:28 + --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:37:28 | LL | if let &TupleEnum::Var(Some(_)) = ref_value {} | ^^^^^^^ @@ -41,7 +41,7 @@ LL | if let &TupleEnum::Var(Some(_)) = ref_value {} = help: explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:41:27 + --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:40:27 | LL | if let TupleEnum::Var(Some(_)) = *ref_value {} | ^^^^^^^ @@ -49,7 +49,7 @@ LL | if let TupleEnum::Var(Some(_)) = *ref_value {} = help: explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:44:12 + --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:43:12 | LL | if let TupleEnum::Empty = ref_value {} | ^^^^^^^^^^^^^^^^ @@ -57,7 +57,7 @@ LL | if let TupleEnum::Empty = ref_value {} = help: use `*` to dereference the match expression or explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:60:9 + --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:59:9 | LL | let (_a, _b) = ref_value; | ^^^^^^^^ @@ -65,7 +65,7 @@ LL | let (_a, _b) = ref_value; = help: use `*` to dereference the match expression or explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:63:18 + --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:62:18 | LL | if let &(_a, Some(_)) = ref_value {} | ^^^^^^^ @@ -73,7 +73,7 @@ LL | if let &(_a, Some(_)) = ref_value {} = help: explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:66:17 + --> tests/ui/pattern_type_mismatch/pattern_tuples.rs:65:17 | LL | if let (_a, Some(_)) = *ref_value {} | ^^^^^^^ diff --git a/tests/ui/pattern_type_mismatch/syntax.rs b/tests/ui/pattern_type_mismatch/syntax.rs index 0bbc26a0c27c5..49ea1d3f7a67c 100644 --- a/tests/ui/pattern_type_mismatch/syntax.rs +++ b/tests/ui/pattern_type_mismatch/syntax.rs @@ -1,5 +1,10 @@ -#![allow(clippy::all)] #![warn(clippy::pattern_type_mismatch)] +#![allow( + clippy::match_ref_pats, + clippy::never_loop, + clippy::redundant_pattern_matching, + clippy::single_match +)] fn main() {} diff --git a/tests/ui/pattern_type_mismatch/syntax.stderr b/tests/ui/pattern_type_mismatch/syntax.stderr index 3f6b5feb9b07b..cd604d604c12c 100644 --- a/tests/ui/pattern_type_mismatch/syntax.stderr +++ b/tests/ui/pattern_type_mismatch/syntax.stderr @@ -1,5 +1,5 @@ error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/syntax.rs:11:9 + --> tests/ui/pattern_type_mismatch/syntax.rs:16:9 | LL | Some(_) => (), | ^^^^^^^ @@ -9,7 +9,7 @@ LL | Some(_) => (), = help: to override `-D warnings` add `#[allow(clippy::pattern_type_mismatch)]` error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/syntax.rs:31:12 + --> tests/ui/pattern_type_mismatch/syntax.rs:36:12 | LL | if let Some(_) = ref_value {} | ^^^^^^^ @@ -17,7 +17,7 @@ LL | if let Some(_) = ref_value {} = help: use `*` to dereference the match expression or explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/syntax.rs:43:15 + --> tests/ui/pattern_type_mismatch/syntax.rs:48:15 | LL | while let Some(_) = ref_value { | ^^^^^^^ @@ -25,7 +25,7 @@ LL | while let Some(_) = ref_value { = help: use `*` to dereference the match expression or explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/syntax.rs:63:9 + --> tests/ui/pattern_type_mismatch/syntax.rs:68:9 | LL | for (_a, _b) in slice.iter() {} | ^^^^^^^^ @@ -33,7 +33,7 @@ LL | for (_a, _b) in slice.iter() {} = help: explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/syntax.rs:74:9 + --> tests/ui/pattern_type_mismatch/syntax.rs:79:9 | LL | let (_n, _m) = ref_value; | ^^^^^^^^ @@ -41,7 +41,7 @@ LL | let (_n, _m) = ref_value; = help: use `*` to dereference the match expression or explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/syntax.rs:84:12 + --> tests/ui/pattern_type_mismatch/syntax.rs:89:12 | LL | fn foo((_a, _b): &(i32, i32)) {} | ^^^^^^^^ @@ -49,7 +49,7 @@ LL | fn foo((_a, _b): &(i32, i32)) {} = help: explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/syntax.rs:99:10 + --> tests/ui/pattern_type_mismatch/syntax.rs:104:10 | LL | foo(|(_a, _b)| ()); | ^^^^^^^^ @@ -57,7 +57,7 @@ LL | foo(|(_a, _b)| ()); = help: explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/syntax.rs:116:9 + --> tests/ui/pattern_type_mismatch/syntax.rs:121:9 | LL | Some(_) => (), | ^^^^^^^ @@ -65,7 +65,7 @@ LL | Some(_) => (), = help: use `*` to dereference the match expression or explicitly match against a `&_` pattern and adjust the enclosed variable bindings error: type of pattern does not match the expression type - --> tests/ui/pattern_type_mismatch/syntax.rs:137:17 + --> tests/ui/pattern_type_mismatch/syntax.rs:142:17 | LL | Some(_) => (), | ^^^^^^^ diff --git a/tests/ui/patterns.fixed b/tests/ui/patterns.fixed index bcb8ecfc38d25..a6dd5fd63a9f6 100644 --- a/tests/ui/patterns.fixed +++ b/tests/ui/patterns.fixed @@ -1,6 +1,4 @@ //@aux-build:proc_macros.rs -#![warn(clippy::all)] -#![allow(unused)] #![allow(clippy::uninlined_format_args, clippy::single_match)] #[macro_use] diff --git a/tests/ui/patterns.rs b/tests/ui/patterns.rs index 19639ebd13d60..64bfbdecdac2b 100644 --- a/tests/ui/patterns.rs +++ b/tests/ui/patterns.rs @@ -1,6 +1,4 @@ //@aux-build:proc_macros.rs -#![warn(clippy::all)] -#![allow(unused)] #![allow(clippy::uninlined_format_args, clippy::single_match)] #[macro_use] diff --git a/tests/ui/patterns.stderr b/tests/ui/patterns.stderr index b9950fe181cc7..ff5e1a8de90a4 100644 --- a/tests/ui/patterns.stderr +++ b/tests/ui/patterns.stderr @@ -1,5 +1,5 @@ error: the `y @ _` pattern can be written as just `y` - --> tests/ui/patterns.rs:14:9 + --> tests/ui/patterns.rs:12:9 | LL | y @ _ => (), | ^^^^^ help: try: `y` @@ -8,13 +8,13 @@ LL | y @ _ => (), = help: to override `-D warnings` add `#[allow(clippy::redundant_pattern)]` error: the `x @ _` pattern can be written as just `x` - --> tests/ui/patterns.rs:30:9 + --> tests/ui/patterns.rs:28:9 | LL | ref mut x @ _ => { | ^^^^^^^^^^^^^ help: try: `ref mut x` error: the `x @ _` pattern can be written as just `x` - --> tests/ui/patterns.rs:39:9 + --> tests/ui/patterns.rs:37:9 | LL | ref x @ _ => println!("vec: {:?}", x), | ^^^^^^^^^ help: try: `ref x` diff --git a/tests/ui/pointers_in_nomem_asm_block.rs b/tests/ui/pointers_in_nomem_asm_block.rs index 171716be26024..7f69c61b0289c 100644 --- a/tests/ui/pointers_in_nomem_asm_block.rs +++ b/tests/ui/pointers_in_nomem_asm_block.rs @@ -6,29 +6,37 @@ use core::arch::asm; unsafe fn nomem_bad(p: &i32) { - asm!( - "asdf {p1}, {p2}, {p3}", - p1 = in(reg) p, - //~^ pointers_in_nomem_asm_block + unsafe { + asm!( + "asdf {p1}, {p2}, {p3}", + p1 = in(reg) p, + //~^ pointers_in_nomem_asm_block - p2 = in(reg) p as *const _ as usize, - p3 = in(reg) p, - options(nomem, nostack, preserves_flags) - ); + p2 = in(reg) p as *const _ as usize, + p3 = in(reg) p, + options(nomem, nostack, preserves_flags) + ); + } } unsafe fn nomem_good(p: &i32) { - asm!("asdf {p}", p = in(reg) p, options(readonly, nostack, preserves_flags)); - let p = p as *const i32 as usize; - asm!("asdf {p}", p = in(reg) p, options(nomem, nostack, preserves_flags)); + unsafe { + asm!("asdf {p}", p = in(reg) p, options(readonly, nostack, preserves_flags)); + let p = p as *const i32 as usize; + asm!("asdf {p}", p = in(reg) p, options(nomem, nostack, preserves_flags)); + } } unsafe fn nomem_bad2(p: &mut i32) { - asm!("asdf {p}", p = in(reg) p, options(nomem, nostack, preserves_flags)); - //~^ pointers_in_nomem_asm_block + unsafe { + asm!("asdf {p}", p = in(reg) p, options(nomem, nostack, preserves_flags)); + //~^ pointers_in_nomem_asm_block + } } unsafe fn nomem_fn(p: extern "C" fn()) { - asm!("call {p}", p = in(reg) p, options(nomem)); - //~^ pointers_in_nomem_asm_block + unsafe { + asm!("call {p}", p = in(reg) p, options(nomem)); + //~^ pointers_in_nomem_asm_block + } } diff --git a/tests/ui/pointers_in_nomem_asm_block.stderr b/tests/ui/pointers_in_nomem_asm_block.stderr index ca24e34f63c0f..eabac2444eccc 100644 --- a/tests/ui/pointers_in_nomem_asm_block.stderr +++ b/tests/ui/pointers_in_nomem_asm_block.stderr @@ -1,11 +1,11 @@ error: passing pointers to nomem asm block - --> tests/ui/pointers_in_nomem_asm_block.rs:11:9 + --> tests/ui/pointers_in_nomem_asm_block.rs:12:13 | -LL | p1 = in(reg) p, - | ^^^^^^^^^^^^^^ +LL | p1 = in(reg) p, + | ^^^^^^^^^^^^^^ ... -LL | p3 = in(reg) p, - | ^^^^^^^^^^^^^^ +LL | p3 = in(reg) p, + | ^^^^^^^^^^^^^^ | = note: `nomem` means that no memory write or read happens inside the asm! block = note: if this is intentional and no pointers are read or written to, consider allowing the lint @@ -13,19 +13,19 @@ LL | p3 = in(reg) p, = help: to override `-D warnings` add `#[allow(clippy::pointers_in_nomem_asm_block)]` error: passing pointers to nomem asm block - --> tests/ui/pointers_in_nomem_asm_block.rs:27:22 + --> tests/ui/pointers_in_nomem_asm_block.rs:32:26 | -LL | asm!("asdf {p}", p = in(reg) p, options(nomem, nostack, preserves_flags)); - | ^^^^^^^^^^^^^ +LL | asm!("asdf {p}", p = in(reg) p, options(nomem, nostack, preserves_flags)); + | ^^^^^^^^^^^^^ | = note: `nomem` means that no memory write or read happens inside the asm! block = note: if this is intentional and no pointers are read or written to, consider allowing the lint error: passing pointers to nomem asm block - --> tests/ui/pointers_in_nomem_asm_block.rs:32:22 + --> tests/ui/pointers_in_nomem_asm_block.rs:39:26 | -LL | asm!("call {p}", p = in(reg) p, options(nomem)); - | ^^^^^^^^^^^^^ +LL | asm!("call {p}", p = in(reg) p, options(nomem)); + | ^^^^^^^^^^^^^ | = note: `nomem` means that no memory write or read happens inside the asm! block = note: if this is intentional and no pointers are read or written to, consider allowing the lint diff --git a/tests/ui/ptr_cast_constness.fixed b/tests/ui/ptr_cast_constness.fixed index 6dded72d3e191..79bfae1f7ebb4 100644 --- a/tests/ui/ptr_cast_constness.fixed +++ b/tests/ui/ptr_cast_constness.fixed @@ -12,11 +12,13 @@ extern crate proc_macros; use proc_macros::{external, inline_macros}; unsafe fn ptr_to_ref(p: *const T, om: *mut U) { - let _: &mut T = std::mem::transmute(p.cast_mut()); - //~^ ptr_cast_constness - let _ = &mut *p.cast_mut(); - //~^ ptr_cast_constness - let _: &T = &*(om as *const T); + unsafe { + let _: &mut T = std::mem::transmute(p.cast_mut()); + //~^ ptr_cast_constness + let _ = &mut *p.cast_mut(); + //~^ ptr_cast_constness + let _: &T = &*(om as *const T); + } } #[inline_macros] @@ -98,3 +100,9 @@ fn null_pointers() { let _ = external!(ptr::null::() as *mut u32); let _ = external!(ptr::null::().cast_mut()); } + +fn issue14621() { + let mut local = 4; + let _ = std::ptr::addr_of_mut!(local).cast_const(); + //~^ ptr_cast_constness +} diff --git a/tests/ui/ptr_cast_constness.rs b/tests/ui/ptr_cast_constness.rs index e9629f5290ec1..f6590dabd5b84 100644 --- a/tests/ui/ptr_cast_constness.rs +++ b/tests/ui/ptr_cast_constness.rs @@ -12,11 +12,13 @@ extern crate proc_macros; use proc_macros::{external, inline_macros}; unsafe fn ptr_to_ref(p: *const T, om: *mut U) { - let _: &mut T = std::mem::transmute(p as *mut T); - //~^ ptr_cast_constness - let _ = &mut *(p as *mut T); - //~^ ptr_cast_constness - let _: &T = &*(om as *const T); + unsafe { + let _: &mut T = std::mem::transmute(p as *mut T); + //~^ ptr_cast_constness + let _ = &mut *(p as *mut T); + //~^ ptr_cast_constness + let _: &T = &*(om as *const T); + } } #[inline_macros] @@ -98,3 +100,9 @@ fn null_pointers() { let _ = external!(ptr::null::() as *mut u32); let _ = external!(ptr::null::().cast_mut()); } + +fn issue14621() { + let mut local = 4; + let _ = std::ptr::addr_of_mut!(local) as *const _; + //~^ ptr_cast_constness +} diff --git a/tests/ui/ptr_cast_constness.stderr b/tests/ui/ptr_cast_constness.stderr index 1eeeef7470138..0b1644168ff51 100644 --- a/tests/ui/ptr_cast_constness.stderr +++ b/tests/ui/ptr_cast_constness.stderr @@ -1,74 +1,74 @@ error: `as` casting between raw pointers while changing only its constness - --> tests/ui/ptr_cast_constness.rs:15:41 + --> tests/ui/ptr_cast_constness.rs:16:45 | -LL | let _: &mut T = std::mem::transmute(p as *mut T); - | ^^^^^^^^^^^ help: try `pointer::cast_mut`, a safer alternative: `p.cast_mut()` +LL | let _: &mut T = std::mem::transmute(p as *mut T); + | ^^^^^^^^^^^ help: try `pointer::cast_mut`, a safer alternative: `p.cast_mut()` | = note: `-D clippy::ptr-cast-constness` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::ptr_cast_constness)]` error: `as` casting between raw pointers while changing only its constness - --> tests/ui/ptr_cast_constness.rs:17:19 + --> tests/ui/ptr_cast_constness.rs:18:23 | -LL | let _ = &mut *(p as *mut T); - | ^^^^^^^^^^^^^ help: try `pointer::cast_mut`, a safer alternative: `p.cast_mut()` +LL | let _ = &mut *(p as *mut T); + | ^^^^^^^^^^^^^ help: try `pointer::cast_mut`, a safer alternative: `p.cast_mut()` error: `as` casting between raw pointers while changing only its constness - --> tests/ui/ptr_cast_constness.rs:33:17 + --> tests/ui/ptr_cast_constness.rs:35:17 | LL | let _ = *ptr_ptr as *mut u32; | ^^^^^^^^^^^^^^^^^^^^ help: try `pointer::cast_mut`, a safer alternative: `(*ptr_ptr).cast_mut()` error: `as` casting between raw pointers while changing only its constness - --> tests/ui/ptr_cast_constness.rs:37:13 + --> tests/ui/ptr_cast_constness.rs:39:13 | LL | let _ = ptr as *mut u32; | ^^^^^^^^^^^^^^^ help: try `pointer::cast_mut`, a safer alternative: `ptr.cast_mut()` error: `as` casting between raw pointers while changing only its constness - --> tests/ui/ptr_cast_constness.rs:39:13 + --> tests/ui/ptr_cast_constness.rs:41:13 | LL | let _ = mut_ptr as *const u32; | ^^^^^^^^^^^^^^^^^^^^^ help: try `pointer::cast_const`, a safer alternative: `mut_ptr.cast_const()` error: `as` casting between raw pointers while changing only its constness - --> tests/ui/ptr_cast_constness.rs:73:13 + --> tests/ui/ptr_cast_constness.rs:75:13 | LL | let _ = ptr as *mut u32; | ^^^^^^^^^^^^^^^ help: try `pointer::cast_mut`, a safer alternative: `ptr.cast_mut()` error: `as` casting between raw pointers while changing only its constness - --> tests/ui/ptr_cast_constness.rs:75:13 + --> tests/ui/ptr_cast_constness.rs:77:13 | LL | let _ = mut_ptr as *const u32; | ^^^^^^^^^^^^^^^^^^^^^ help: try `pointer::cast_const`, a safer alternative: `mut_ptr.cast_const()` error: `as` casting to make a const null pointer into a mutable null pointer - --> tests/ui/ptr_cast_constness.rs:82:13 + --> tests/ui/ptr_cast_constness.rs:84:13 | LL | let _ = ptr::null::() as *mut String; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `null_mut()` directly instead: `std::ptr::null_mut::()` error: `as` casting to make a mutable null pointer into a const null pointer - --> tests/ui/ptr_cast_constness.rs:84:13 + --> tests/ui/ptr_cast_constness.rs:86:13 | LL | let _ = ptr::null_mut::() as *const u32; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `null()` directly instead: `std::ptr::null::()` error: changing constness of a null pointer - --> tests/ui/ptr_cast_constness.rs:86:13 + --> tests/ui/ptr_cast_constness.rs:88:13 | LL | let _ = ptr::null::().cast_mut(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `null_mut()` directly instead: `std::ptr::null_mut::()` error: changing constness of a null pointer - --> tests/ui/ptr_cast_constness.rs:88:13 + --> tests/ui/ptr_cast_constness.rs:90:13 | LL | let _ = ptr::null_mut::().cast_const(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `null()` directly instead: `std::ptr::null::()` error: `as` casting to make a const null pointer into a mutable null pointer - --> tests/ui/ptr_cast_constness.rs:92:21 + --> tests/ui/ptr_cast_constness.rs:94:21 | LL | let _ = inline!(ptr::null::() as *mut u32); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `null_mut()` directly instead: `std::ptr::null_mut::()` @@ -76,12 +76,18 @@ LL | let _ = inline!(ptr::null::() as *mut u32); = note: this error originates in the macro `__inline_mac_fn_null_pointers` (in Nightly builds, run with -Z macro-backtrace for more info) error: changing constness of a null pointer - --> tests/ui/ptr_cast_constness.rs:94:21 + --> tests/ui/ptr_cast_constness.rs:96:21 | LL | let _ = inline!(ptr::null::().cast_mut()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `null_mut()` directly instead: `std::ptr::null_mut::()` | = note: this error originates in the macro `__inline_mac_fn_null_pointers` (in Nightly builds, run with -Z macro-backtrace for more info) -error: aborting due to 13 previous errors +error: `as` casting between raw pointers while changing only its constness + --> tests/ui/ptr_cast_constness.rs:106:13 + | +LL | let _ = std::ptr::addr_of_mut!(local) as *const _; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try `pointer::cast_const`, a safer alternative: `std::ptr::addr_of_mut!(local).cast_const()` + +error: aborting due to 14 previous errors diff --git a/tests/ui/ptr_eq.fixed b/tests/ui/ptr_eq.fixed index df6305ed497e8..484ff30732392 100644 --- a/tests/ui/ptr_eq.fixed +++ b/tests/ui/ptr_eq.fixed @@ -4,6 +4,9 @@ macro_rules! mac { ($a:expr, $b:expr) => { $a as *const _ as usize == $b as *const _ as usize }; + (cast $a:expr) => { + $a as *const [i32; 3] + }; } macro_rules! another_mac { @@ -51,4 +54,8 @@ fn main() { #[allow(clippy::eq_op)] let _issue14337 = std::ptr::eq(main as *const (), main as *const ()); //~^ ptr_eq + + // Do not peel the content of macros + let _ = std::ptr::eq(mac!(cast a), mac!(cast b)); + //~^ ptr_eq } diff --git a/tests/ui/ptr_eq.rs b/tests/ui/ptr_eq.rs index 0ed0ff0d13716..f28707cc3e927 100644 --- a/tests/ui/ptr_eq.rs +++ b/tests/ui/ptr_eq.rs @@ -4,6 +4,9 @@ macro_rules! mac { ($a:expr, $b:expr) => { $a as *const _ as usize == $b as *const _ as usize }; + (cast $a:expr) => { + $a as *const [i32; 3] + }; } macro_rules! another_mac { @@ -51,4 +54,8 @@ fn main() { #[allow(clippy::eq_op)] let _issue14337 = main as *const () == main as *const (); //~^ ptr_eq + + // Do not peel the content of macros + let _ = mac!(cast a) as *const _ == mac!(cast b) as *const _; + //~^ ptr_eq } diff --git a/tests/ui/ptr_eq.stderr b/tests/ui/ptr_eq.stderr index 33190df284a3f..906831b9e0312 100644 --- a/tests/ui/ptr_eq.stderr +++ b/tests/ui/ptr_eq.stderr @@ -1,5 +1,5 @@ error: use `std::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq.rs:19:13 + --> tests/ui/ptr_eq.rs:22:13 | LL | let _ = a as *const _ as usize == b as *const _ as usize; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `std::ptr::eq(a, b)` @@ -8,52 +8,58 @@ LL | let _ = a as *const _ as usize == b as *const _ as usize; = help: to override `-D warnings` add `#[allow(clippy::ptr_eq)]` error: use `std::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq.rs:21:13 + --> tests/ui/ptr_eq.rs:24:13 | LL | let _ = a as *const _ == b as *const _; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `std::ptr::eq(a, b)` error: use `std::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq.rs:23:13 + --> tests/ui/ptr_eq.rs:26:13 | LL | let _ = a.as_ptr() == b as *const _; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `std::ptr::eq(a.as_ptr(), b as *const _)` error: use `std::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq.rs:25:13 + --> tests/ui/ptr_eq.rs:28:13 | LL | let _ = a.as_ptr() == b.as_ptr(); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `std::ptr::eq(a.as_ptr(), b.as_ptr())` error: use `std::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq.rs:36:13 + --> tests/ui/ptr_eq.rs:39:13 | LL | let _ = a.as_mut_ptr() == b as *mut [i32] as *mut _; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `std::ptr::eq(a.as_mut_ptr(), b as *mut [i32] as *mut _)` error: use `std::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq.rs:38:13 + --> tests/ui/ptr_eq.rs:41:13 | LL | let _ = a.as_mut_ptr() == b.as_mut_ptr(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `std::ptr::eq(a.as_mut_ptr(), b.as_mut_ptr())` error: use `std::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq.rs:45:13 + --> tests/ui/ptr_eq.rs:48:13 | LL | let _ = x as *const u32 == y as *mut u32 as *const u32; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `std::ptr::eq(x, y)` error: use `std::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq.rs:48:13 + --> tests/ui/ptr_eq.rs:51:13 | LL | let _ = x as *const u32 != y as *mut u32 as *const u32; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `!std::ptr::eq(x, y)` error: use `std::ptr::eq` when comparing raw pointers - --> tests/ui/ptr_eq.rs:52:23 + --> tests/ui/ptr_eq.rs:55:23 | LL | let _issue14337 = main as *const () == main as *const (); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `std::ptr::eq(main as *const (), main as *const ())` -error: aborting due to 9 previous errors +error: use `std::ptr::eq` when comparing raw pointers + --> tests/ui/ptr_eq.rs:59:13 + | +LL | let _ = mac!(cast a) as *const _ == mac!(cast b) as *const _; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `std::ptr::eq(mac!(cast a), mac!(cast b))` + +error: aborting due to 10 previous errors diff --git a/tests/ui/question_mark.fixed b/tests/ui/question_mark.fixed index fff41f578284d..6bd071d07f523 100644 --- a/tests/ui/question_mark.fixed +++ b/tests/ui/question_mark.fixed @@ -3,6 +3,8 @@ #![allow(dead_code)] #![allow(clippy::unnecessary_wraps)] +use std::sync::MutexGuard; + fn some_func(a: Option) -> Option { a?; @@ -430,3 +432,9 @@ fn msrv_1_13(arg: Option) -> Option { println!("{}", val); Some(val) } + +fn issue_14615(a: MutexGuard>) -> Option { + let a = (*a)?; + //~^^^ question_mark + Some(format!("{a}")) +} diff --git a/tests/ui/question_mark.rs b/tests/ui/question_mark.rs index c71c8ee984edd..dd093c9bf480c 100644 --- a/tests/ui/question_mark.rs +++ b/tests/ui/question_mark.rs @@ -3,6 +3,8 @@ #![allow(dead_code)] #![allow(clippy::unnecessary_wraps)] +use std::sync::MutexGuard; + fn some_func(a: Option) -> Option { if a.is_none() { //~^ question_mark @@ -524,3 +526,11 @@ fn msrv_1_13(arg: Option) -> Option { println!("{}", val); Some(val) } + +fn issue_14615(a: MutexGuard>) -> Option { + let Some(a) = *a else { + return None; + }; + //~^^^ question_mark + Some(format!("{a}")) +} diff --git a/tests/ui/question_mark.stderr b/tests/ui/question_mark.stderr index 183b8866a7481..8fe04b895cea2 100644 --- a/tests/ui/question_mark.stderr +++ b/tests/ui/question_mark.stderr @@ -1,5 +1,5 @@ error: this block may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:7:5 + --> tests/ui/question_mark.rs:9:5 | LL | / if a.is_none() { LL | | @@ -11,7 +11,7 @@ LL | | } = help: to override `-D warnings` add `#[allow(clippy::question_mark)]` error: this block may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:53:9 + --> tests/ui/question_mark.rs:55:9 | LL | / if (self.opt).is_none() { LL | | @@ -20,7 +20,7 @@ LL | | } | |_________^ help: replace it with: `(self.opt)?;` error: this block may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:58:9 + --> tests/ui/question_mark.rs:60:9 | LL | / if self.opt.is_none() { LL | | @@ -29,7 +29,7 @@ LL | | } | |_________^ help: replace it with: `self.opt?;` error: this block may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:63:17 + --> tests/ui/question_mark.rs:65:17 | LL | let _ = if self.opt.is_none() { | _________________^ @@ -41,7 +41,7 @@ LL | | }; | |_________^ help: replace it with: `Some(self.opt?)` error: this block may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:70:17 + --> tests/ui/question_mark.rs:72:17 | LL | let _ = if let Some(x) = self.opt { | _________________^ @@ -53,7 +53,7 @@ LL | | }; | |_________^ help: replace it with: `self.opt?` error: this block may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:88:9 + --> tests/ui/question_mark.rs:90:9 | LL | / if self.opt.is_none() { LL | | @@ -62,7 +62,7 @@ LL | | } | |_________^ help: replace it with: `self.opt.as_ref()?;` error: this block may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:97:9 + --> tests/ui/question_mark.rs:99:9 | LL | / if self.opt.is_none() { LL | | @@ -71,7 +71,7 @@ LL | | } | |_________^ help: replace it with: `self.opt.as_ref()?;` error: this block may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:106:9 + --> tests/ui/question_mark.rs:108:9 | LL | / if self.opt.is_none() { LL | | @@ -80,7 +80,7 @@ LL | | } | |_________^ help: replace it with: `self.opt.as_ref()?;` error: this block may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:114:26 + --> tests/ui/question_mark.rs:116:26 | LL | let v: &Vec<_> = if let Some(ref v) = self.opt { | __________________________^ @@ -92,7 +92,7 @@ LL | | }; | |_________^ help: replace it with: `self.opt.as_ref()?` error: this block may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:125:17 + --> tests/ui/question_mark.rs:127:17 | LL | let v = if let Some(v) = self.opt { | _________________^ @@ -104,7 +104,7 @@ LL | | }; | |_________^ help: replace it with: `self.opt?` error: this block may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:147:5 + --> tests/ui/question_mark.rs:149:5 | LL | / if f().is_none() { LL | | @@ -113,7 +113,7 @@ LL | | } | |_____^ help: replace it with: `f()?;` error: this `match` expression can be replaced with `?` - --> tests/ui/question_mark.rs:152:16 + --> tests/ui/question_mark.rs:154:16 | LL | let _val = match f() { | ________________^ @@ -124,7 +124,7 @@ LL | | }; | |_____^ help: try instead: `f()?` error: this `match` expression can be replaced with `?` - --> tests/ui/question_mark.rs:163:5 + --> tests/ui/question_mark.rs:165:5 | LL | / match f() { LL | | @@ -134,7 +134,7 @@ LL | | }; | |_____^ help: try instead: `f()?` error: this `match` expression can be replaced with `?` - --> tests/ui/question_mark.rs:169:5 + --> tests/ui/question_mark.rs:171:5 | LL | / match opt_none!() { LL | | @@ -144,13 +144,13 @@ LL | | }; | |_____^ help: try instead: `opt_none!()?` error: this block may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:196:13 + --> tests/ui/question_mark.rs:198:13 | LL | let _ = if let Ok(x) = x { x } else { return x }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `x?` error: this block may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:199:5 + --> tests/ui/question_mark.rs:201:5 | LL | / if x.is_err() { LL | | @@ -159,7 +159,7 @@ LL | | } | |_____^ help: replace it with: `x?;` error: this `match` expression can be replaced with `?` - --> tests/ui/question_mark.rs:204:16 + --> tests/ui/question_mark.rs:206:16 | LL | let _val = match func_returning_result() { | ________________^ @@ -170,7 +170,7 @@ LL | | }; | |_____^ help: try instead: `func_returning_result()?` error: this `match` expression can be replaced with `?` - --> tests/ui/question_mark.rs:210:5 + --> tests/ui/question_mark.rs:212:5 | LL | / match func_returning_result() { LL | | @@ -180,7 +180,7 @@ LL | | }; | |_____^ help: try instead: `func_returning_result()?` error: this block may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:302:5 + --> tests/ui/question_mark.rs:304:5 | LL | / if let Err(err) = func_returning_result() { LL | | @@ -189,7 +189,7 @@ LL | | } | |_____^ help: replace it with: `func_returning_result()?;` error: this block may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:310:5 + --> tests/ui/question_mark.rs:312:5 | LL | / if let Err(err) = func_returning_result() { LL | | @@ -198,7 +198,7 @@ LL | | } | |_____^ help: replace it with: `func_returning_result()?;` error: this block may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:388:13 + --> tests/ui/question_mark.rs:390:13 | LL | / if a.is_none() { LL | | @@ -208,7 +208,7 @@ LL | | } | |_____________^ help: replace it with: `a?;` error: this `let...else` may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:449:5 + --> tests/ui/question_mark.rs:451:5 | LL | / let Some(v) = bar.foo.owned.clone() else { LL | | return None; @@ -216,7 +216,7 @@ LL | | }; | |______^ help: replace it with: `let v = bar.foo.owned.clone()?;` error: this `let...else` may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:464:5 + --> tests/ui/question_mark.rs:466:5 | LL | / let Some(ref x) = foo.opt_x else { LL | | return None; @@ -224,7 +224,7 @@ LL | | }; | |______^ help: replace it with: `let x = foo.opt_x.as_ref()?;` error: this `let...else` may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:474:5 + --> tests/ui/question_mark.rs:476:5 | LL | / let Some(ref mut x) = foo.opt_x else { LL | | return None; @@ -232,7 +232,7 @@ LL | | }; | |______^ help: replace it with: `let x = foo.opt_x.as_mut()?;` error: this `let...else` may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:485:5 + --> tests/ui/question_mark.rs:487:5 | LL | / let Some(ref x @ ref y) = foo.opt_x else { LL | | return None; @@ -240,7 +240,7 @@ LL | | }; | |______^ help: replace it with: `let x @ y = foo.opt_x.as_ref()?;` error: this `let...else` may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:489:5 + --> tests/ui/question_mark.rs:491:5 | LL | / let Some(ref x @ WrapperStructWithString(_)) = bar else { LL | | return None; @@ -248,7 +248,7 @@ LL | | }; | |______^ help: replace it with: `let x @ &WrapperStructWithString(_) = bar.as_ref()?;` error: this `let...else` may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:493:5 + --> tests/ui/question_mark.rs:495:5 | LL | / let Some(ref mut x @ WrapperStructWithString(_)) = bar else { LL | | return None; @@ -256,7 +256,7 @@ LL | | }; | |______^ help: replace it with: `let x @ &mut WrapperStructWithString(_) = bar.as_mut()?;` error: this block may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:515:5 + --> tests/ui/question_mark.rs:517:5 | LL | / if arg.is_none() { LL | | @@ -265,7 +265,7 @@ LL | | } | |_____^ help: replace it with: `arg?;` error: this `match` expression can be replaced with `?` - --> tests/ui/question_mark.rs:519:15 + --> tests/ui/question_mark.rs:521:15 | LL | let val = match arg { | _______________^ @@ -275,5 +275,13 @@ LL | | None => return None, LL | | }; | |_____^ help: try instead: `arg?` -error: aborting due to 29 previous errors +error: this `let...else` may be rewritten with the `?` operator + --> tests/ui/question_mark.rs:531:5 + | +LL | / let Some(a) = *a else { +LL | | return None; +LL | | }; + | |______^ help: replace it with: `let a = (*a)?;` + +error: aborting due to 30 previous errors diff --git a/tests/ui/redundant_allocation.rs b/tests/ui/redundant_allocation.rs index 0562f7dcc7614..832f147c6ed53 100644 --- a/tests/ui/redundant_allocation.rs +++ b/tests/ui/redundant_allocation.rs @@ -1,4 +1,3 @@ -#![warn(clippy::all)] #![allow(clippy::boxed_local, clippy::disallowed_names)] pub struct MyStruct; diff --git a/tests/ui/redundant_allocation.stderr b/tests/ui/redundant_allocation.stderr index 44d30f95d7bc3..886ed2088c67b 100644 --- a/tests/ui/redundant_allocation.stderr +++ b/tests/ui/redundant_allocation.stderr @@ -1,5 +1,5 @@ error: usage of `Box>` - --> tests/ui/redundant_allocation.rs:16:30 + --> tests/ui/redundant_allocation.rs:15:30 | LL | pub fn box_test6(foo: Box>) {} | ^^^^^^^^^^ @@ -10,7 +10,7 @@ LL | pub fn box_test6(foo: Box>) {} = help: to override `-D warnings` add `#[allow(clippy::redundant_allocation)]` error: usage of `Box>` - --> tests/ui/redundant_allocation.rs:19:30 + --> tests/ui/redundant_allocation.rs:18:30 | LL | pub fn box_test7(foo: Box>) {} | ^^^^^^^^^^^ @@ -19,7 +19,7 @@ LL | pub fn box_test7(foo: Box>) {} = help: consider using just `Box` or `Arc` error: usage of `Box>>` - --> tests/ui/redundant_allocation.rs:22:27 + --> tests/ui/redundant_allocation.rs:21:27 | LL | pub fn box_test8() -> Box>> { | ^^^^^^^^^^^^^^^^^^^^ @@ -28,7 +28,7 @@ LL | pub fn box_test8() -> Box>> { = help: consider using just `Box>` or `Rc>` error: usage of `Box>` - --> tests/ui/redundant_allocation.rs:28:30 + --> tests/ui/redundant_allocation.rs:27:30 | LL | pub fn box_test9(foo: Box>) -> Box>> { | ^^^^^^^^^^^ @@ -37,7 +37,7 @@ LL | pub fn box_test9(foo: Box>) -> Box>> { = help: consider using just `Box` or `Arc` error: usage of `Box>>` - --> tests/ui/redundant_allocation.rs:28:46 + --> tests/ui/redundant_allocation.rs:27:46 | LL | pub fn box_test9(foo: Box>) -> Box>> { | ^^^^^^^^^^^^^^^^^ @@ -46,7 +46,7 @@ LL | pub fn box_test9(foo: Box>) -> Box>> { = help: consider using just `Box>` or `Arc>` error: usage of `Rc>` - --> tests/ui/redundant_allocation.rs:42:24 + --> tests/ui/redundant_allocation.rs:41:24 | LL | pub fn rc_test5(a: Rc>) {} | ^^^^^^^^^^^^^ @@ -55,7 +55,7 @@ LL | pub fn rc_test5(a: Rc>) {} = help: consider using just `Rc` or `Box` error: usage of `Rc>` - --> tests/ui/redundant_allocation.rs:45:24 + --> tests/ui/redundant_allocation.rs:44:24 | LL | pub fn rc_test7(a: Rc>) {} | ^^^^^^^^^^^^^ @@ -64,7 +64,7 @@ LL | pub fn rc_test7(a: Rc>) {} = help: consider using just `Rc` or `Arc` error: usage of `Rc>>` - --> tests/ui/redundant_allocation.rs:48:26 + --> tests/ui/redundant_allocation.rs:47:26 | LL | pub fn rc_test8() -> Rc>> { | ^^^^^^^^^^^^^^^^^^^^ @@ -73,7 +73,7 @@ LL | pub fn rc_test8() -> Rc>> { = help: consider using just `Rc>` or `Box>` error: usage of `Rc>` - --> tests/ui/redundant_allocation.rs:54:29 + --> tests/ui/redundant_allocation.rs:53:29 | LL | pub fn rc_test9(foo: Rc>) -> Rc>> { | ^^^^^^^^^^ @@ -82,7 +82,7 @@ LL | pub fn rc_test9(foo: Rc>) -> Rc>> { = help: consider using just `Rc` or `Arc` error: usage of `Rc>>` - --> tests/ui/redundant_allocation.rs:54:44 + --> tests/ui/redundant_allocation.rs:53:44 | LL | pub fn rc_test9(foo: Rc>) -> Rc>> { | ^^^^^^^^^^^^^^^^ @@ -91,7 +91,7 @@ LL | pub fn rc_test9(foo: Rc>) -> Rc>> { = help: consider using just `Rc>` or `Arc>` error: usage of `Arc>` - --> tests/ui/redundant_allocation.rs:68:25 + --> tests/ui/redundant_allocation.rs:67:25 | LL | pub fn arc_test5(a: Arc>) {} | ^^^^^^^^^^^^^^ @@ -100,7 +100,7 @@ LL | pub fn arc_test5(a: Arc>) {} = help: consider using just `Arc` or `Box` error: usage of `Arc>` - --> tests/ui/redundant_allocation.rs:71:25 + --> tests/ui/redundant_allocation.rs:70:25 | LL | pub fn arc_test6(a: Arc>) {} | ^^^^^^^^^^^^^ @@ -109,7 +109,7 @@ LL | pub fn arc_test6(a: Arc>) {} = help: consider using just `Arc` or `Rc` error: usage of `Arc>>` - --> tests/ui/redundant_allocation.rs:74:27 + --> tests/ui/redundant_allocation.rs:73:27 | LL | pub fn arc_test8() -> Arc>> { | ^^^^^^^^^^^^^^^^^^^^^ @@ -118,7 +118,7 @@ LL | pub fn arc_test8() -> Arc>> { = help: consider using just `Arc>` or `Box>` error: usage of `Arc>` - --> tests/ui/redundant_allocation.rs:80:30 + --> tests/ui/redundant_allocation.rs:79:30 | LL | pub fn arc_test9(foo: Arc>) -> Arc>> { | ^^^^^^^^^^ @@ -127,7 +127,7 @@ LL | pub fn arc_test9(foo: Arc>) -> Arc>> { = help: consider using just `Arc` or `Rc` error: usage of `Arc>>` - --> tests/ui/redundant_allocation.rs:80:45 + --> tests/ui/redundant_allocation.rs:79:45 | LL | pub fn arc_test9(foo: Arc>) -> Arc>> { | ^^^^^^^^^^^^^^^^ @@ -136,7 +136,7 @@ LL | pub fn arc_test9(foo: Arc>) -> Arc>> { = help: consider using just `Arc>` or `Rc>` error: usage of `Rc>>` - --> tests/ui/redundant_allocation.rs:105:27 + --> tests/ui/redundant_allocation.rs:104:27 | LL | pub fn test_rc_box(_: Rc>>) {} | ^^^^^^^^^^^^^^^^^^^ @@ -145,7 +145,7 @@ LL | pub fn test_rc_box(_: Rc>>) {} = help: consider using just `Rc>` or `Box>` error: usage of `Rc>>` - --> tests/ui/redundant_allocation.rs:138:31 + --> tests/ui/redundant_allocation.rs:137:31 | LL | pub fn test_rc_box_str(_: Rc>>) {} | ^^^^^^^^^^^^^^^^^ @@ -154,7 +154,7 @@ LL | pub fn test_rc_box_str(_: Rc>>) {} = help: consider using just `Rc>` or `Box>` error: usage of `Rc>>` - --> tests/ui/redundant_allocation.rs:141:33 + --> tests/ui/redundant_allocation.rs:140:33 | LL | pub fn test_rc_box_slice(_: Rc>>) {} | ^^^^^^^^^^^^^^^^^^^^^ @@ -163,7 +163,7 @@ LL | pub fn test_rc_box_slice(_: Rc>>) {} = help: consider using just `Rc>` or `Box>` error: usage of `Rc>>` - --> tests/ui/redundant_allocation.rs:144:32 + --> tests/ui/redundant_allocation.rs:143:32 | LL | pub fn test_rc_box_path(_: Rc>>) {} | ^^^^^^^^^^^^^^^^^^ @@ -172,7 +172,7 @@ LL | pub fn test_rc_box_path(_: Rc>>) {} = help: consider using just `Rc>` or `Box>` error: usage of `Rc>>` - --> tests/ui/redundant_allocation.rs:147:34 + --> tests/ui/redundant_allocation.rs:146:34 | LL | pub fn test_rc_box_custom(_: Rc>>) {} | ^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/redundant_allocation_fixable.fixed b/tests/ui/redundant_allocation_fixable.fixed index 7773ba11f973e..dbc6c0794d1a7 100644 --- a/tests/ui/redundant_allocation_fixable.fixed +++ b/tests/ui/redundant_allocation_fixable.fixed @@ -1,7 +1,5 @@ -#![warn(clippy::all)] #![allow(clippy::boxed_local, clippy::needless_pass_by_value)] -#![allow(clippy::disallowed_names, unused_variables, dead_code)] -#![allow(unused_imports)] +#![allow(clippy::disallowed_names)] pub struct MyStruct; diff --git a/tests/ui/redundant_allocation_fixable.rs b/tests/ui/redundant_allocation_fixable.rs index fb86ed2b3cfdf..05b6429492ce7 100644 --- a/tests/ui/redundant_allocation_fixable.rs +++ b/tests/ui/redundant_allocation_fixable.rs @@ -1,7 +1,5 @@ -#![warn(clippy::all)] #![allow(clippy::boxed_local, clippy::needless_pass_by_value)] -#![allow(clippy::disallowed_names, unused_variables, dead_code)] -#![allow(unused_imports)] +#![allow(clippy::disallowed_names)] pub struct MyStruct; diff --git a/tests/ui/redundant_allocation_fixable.stderr b/tests/ui/redundant_allocation_fixable.stderr index ed8282cc82ce9..4073766887174 100644 --- a/tests/ui/redundant_allocation_fixable.stderr +++ b/tests/ui/redundant_allocation_fixable.stderr @@ -1,5 +1,5 @@ error: usage of `Box<&T>` - --> tests/ui/redundant_allocation_fixable.rs:23:30 + --> tests/ui/redundant_allocation_fixable.rs:21:30 | LL | pub fn box_test1(foo: Box<&T>) {} | ^^^^^^^ help: try: `&T` @@ -9,7 +9,7 @@ LL | pub fn box_test1(foo: Box<&T>) {} = help: to override `-D warnings` add `#[allow(clippy::redundant_allocation)]` error: usage of `Box<&MyStruct>` - --> tests/ui/redundant_allocation_fixable.rs:26:27 + --> tests/ui/redundant_allocation_fixable.rs:24:27 | LL | pub fn box_test2(foo: Box<&MyStruct>) {} | ^^^^^^^^^^^^^^ help: try: `&MyStruct` @@ -17,7 +17,7 @@ LL | pub fn box_test2(foo: Box<&MyStruct>) {} = note: `&MyStruct` is already a pointer, `Box<&MyStruct>` allocates a pointer on the heap error: usage of `Box<&MyEnum>` - --> tests/ui/redundant_allocation_fixable.rs:29:27 + --> tests/ui/redundant_allocation_fixable.rs:27:27 | LL | pub fn box_test3(foo: Box<&MyEnum>) {} | ^^^^^^^^^^^^ help: try: `&MyEnum` @@ -25,7 +25,7 @@ LL | pub fn box_test3(foo: Box<&MyEnum>) {} = note: `&MyEnum` is already a pointer, `Box<&MyEnum>` allocates a pointer on the heap error: usage of `Box>` - --> tests/ui/redundant_allocation_fixable.rs:34:30 + --> tests/ui/redundant_allocation_fixable.rs:32:30 | LL | pub fn box_test5(foo: Box>) {} | ^^^^^^^^^^^ help: try: `Box` @@ -33,7 +33,7 @@ LL | pub fn box_test5(foo: Box>) {} = note: `Box` is already on the heap, `Box>` makes an extra allocation error: usage of `Rc<&T>` - --> tests/ui/redundant_allocation_fixable.rs:44:29 + --> tests/ui/redundant_allocation_fixable.rs:42:29 | LL | pub fn rc_test1(foo: Rc<&T>) {} | ^^^^^^ help: try: `&T` @@ -41,7 +41,7 @@ LL | pub fn rc_test1(foo: Rc<&T>) {} = note: `&T` is already a pointer, `Rc<&T>` allocates a pointer on the heap error: usage of `Rc<&MyStruct>` - --> tests/ui/redundant_allocation_fixable.rs:47:26 + --> tests/ui/redundant_allocation_fixable.rs:45:26 | LL | pub fn rc_test2(foo: Rc<&MyStruct>) {} | ^^^^^^^^^^^^^ help: try: `&MyStruct` @@ -49,7 +49,7 @@ LL | pub fn rc_test2(foo: Rc<&MyStruct>) {} = note: `&MyStruct` is already a pointer, `Rc<&MyStruct>` allocates a pointer on the heap error: usage of `Rc<&MyEnum>` - --> tests/ui/redundant_allocation_fixable.rs:50:26 + --> tests/ui/redundant_allocation_fixable.rs:48:26 | LL | pub fn rc_test3(foo: Rc<&MyEnum>) {} | ^^^^^^^^^^^ help: try: `&MyEnum` @@ -57,7 +57,7 @@ LL | pub fn rc_test3(foo: Rc<&MyEnum>) {} = note: `&MyEnum` is already a pointer, `Rc<&MyEnum>` allocates a pointer on the heap error: usage of `Rc>` - --> tests/ui/redundant_allocation_fixable.rs:55:24 + --> tests/ui/redundant_allocation_fixable.rs:53:24 | LL | pub fn rc_test6(a: Rc>) {} | ^^^^^^^^^^^^ help: try: `Rc` @@ -65,7 +65,7 @@ LL | pub fn rc_test6(a: Rc>) {} = note: `Rc` is already on the heap, `Rc>` makes an extra allocation error: usage of `Arc<&T>` - --> tests/ui/redundant_allocation_fixable.rs:65:30 + --> tests/ui/redundant_allocation_fixable.rs:63:30 | LL | pub fn arc_test1(foo: Arc<&T>) {} | ^^^^^^^ help: try: `&T` @@ -73,7 +73,7 @@ LL | pub fn arc_test1(foo: Arc<&T>) {} = note: `&T` is already a pointer, `Arc<&T>` allocates a pointer on the heap error: usage of `Arc<&MyStruct>` - --> tests/ui/redundant_allocation_fixable.rs:68:27 + --> tests/ui/redundant_allocation_fixable.rs:66:27 | LL | pub fn arc_test2(foo: Arc<&MyStruct>) {} | ^^^^^^^^^^^^^^ help: try: `&MyStruct` @@ -81,7 +81,7 @@ LL | pub fn arc_test2(foo: Arc<&MyStruct>) {} = note: `&MyStruct` is already a pointer, `Arc<&MyStruct>` allocates a pointer on the heap error: usage of `Arc<&MyEnum>` - --> tests/ui/redundant_allocation_fixable.rs:71:27 + --> tests/ui/redundant_allocation_fixable.rs:69:27 | LL | pub fn arc_test3(foo: Arc<&MyEnum>) {} | ^^^^^^^^^^^^ help: try: `&MyEnum` @@ -89,7 +89,7 @@ LL | pub fn arc_test3(foo: Arc<&MyEnum>) {} = note: `&MyEnum` is already a pointer, `Arc<&MyEnum>` allocates a pointer on the heap error: usage of `Arc>` - --> tests/ui/redundant_allocation_fixable.rs:76:25 + --> tests/ui/redundant_allocation_fixable.rs:74:25 | LL | pub fn arc_test7(a: Arc>) {} | ^^^^^^^^^^^^^^ help: try: `Arc` diff --git a/tests/ui/redundant_clone.fixed b/tests/ui/redundant_clone.fixed index 23c00b34a00a8..c1c389f7c4ed2 100644 --- a/tests/ui/redundant_clone.fixed +++ b/tests/ui/redundant_clone.fixed @@ -259,3 +259,35 @@ fn false_negative_5707() { let _z = x.clone(); // pr 7346 can't lint on `x` drop(y); } + +mod issue10074 { + #[derive(Debug, Clone)] + enum MyEnum { + A = 1, + } + + fn false_positive_on_as() { + let e = MyEnum::A; + let v = e.clone() as u16; + + println!("{e:?}"); + println!("{v}"); + } +} + +mod issue13900 { + use std::fmt::Display; + + fn do_something(f: impl Display + Clone) -> String { + let g = f.clone(); + format!("{} + {}", f, g) + } + + fn regression() { + let mut a = String::new(); + let mut b = String::new(); + for _ in 1..10 { + b = a.clone(); + } + } +} diff --git a/tests/ui/redundant_clone.rs b/tests/ui/redundant_clone.rs index f9fe8ba0236d0..78d98762efc86 100644 --- a/tests/ui/redundant_clone.rs +++ b/tests/ui/redundant_clone.rs @@ -259,3 +259,35 @@ fn false_negative_5707() { let _z = x.clone(); // pr 7346 can't lint on `x` drop(y); } + +mod issue10074 { + #[derive(Debug, Clone)] + enum MyEnum { + A = 1, + } + + fn false_positive_on_as() { + let e = MyEnum::A; + let v = e.clone() as u16; + + println!("{e:?}"); + println!("{v}"); + } +} + +mod issue13900 { + use std::fmt::Display; + + fn do_something(f: impl Display + Clone) -> String { + let g = f.clone(); + format!("{} + {}", f, g) + } + + fn regression() { + let mut a = String::new(); + let mut b = String::new(); + for _ in 1..10 { + b = a.clone(); + } + } +} diff --git a/tests/ui/redundant_pattern_matching_ipaddr.fixed b/tests/ui/redundant_pattern_matching_ipaddr.fixed index 549c97d9534ad..1cec19ab8c99d 100644 --- a/tests/ui/redundant_pattern_matching_ipaddr.fixed +++ b/tests/ui/redundant_pattern_matching_ipaddr.fixed @@ -1,5 +1,4 @@ -#![warn(clippy::all, clippy::redundant_pattern_matching)] -#![allow(unused_must_use)] +#![warn(clippy::redundant_pattern_matching)] #![allow( clippy::match_like_matches_macro, clippy::needless_bool, diff --git a/tests/ui/redundant_pattern_matching_ipaddr.rs b/tests/ui/redundant_pattern_matching_ipaddr.rs index decb1396d56dd..123573a8602b6 100644 --- a/tests/ui/redundant_pattern_matching_ipaddr.rs +++ b/tests/ui/redundant_pattern_matching_ipaddr.rs @@ -1,5 +1,4 @@ -#![warn(clippy::all, clippy::redundant_pattern_matching)] -#![allow(unused_must_use)] +#![warn(clippy::redundant_pattern_matching)] #![allow( clippy::match_like_matches_macro, clippy::needless_bool, diff --git a/tests/ui/redundant_pattern_matching_ipaddr.stderr b/tests/ui/redundant_pattern_matching_ipaddr.stderr index 66d2cecdc0c91..3be7cf81afe95 100644 --- a/tests/ui/redundant_pattern_matching_ipaddr.stderr +++ b/tests/ui/redundant_pattern_matching_ipaddr.stderr @@ -1,5 +1,5 @@ error: redundant pattern matching, consider using `is_ipv4()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:15:12 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:14:12 | LL | if let V4(_) = &ipaddr {} | -------^^^^^---------- help: try: `if ipaddr.is_ipv4()` @@ -8,43 +8,43 @@ LL | if let V4(_) = &ipaddr {} = help: to override `-D warnings` add `#[allow(clippy::redundant_pattern_matching)]` error: redundant pattern matching, consider using `is_ipv4()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:18:12 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:17:12 | LL | if let V4(_) = V4(Ipv4Addr::LOCALHOST) {} | -------^^^^^-------------------------- help: try: `if V4(Ipv4Addr::LOCALHOST).is_ipv4()` error: redundant pattern matching, consider using `is_ipv6()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:21:12 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:20:12 | LL | if let V6(_) = V6(Ipv6Addr::LOCALHOST) {} | -------^^^^^-------------------------- help: try: `if V6(Ipv6Addr::LOCALHOST).is_ipv6()` error: redundant pattern matching, consider using `is_ipv4()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:25:8 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:24:8 | LL | if matches!(V4(Ipv4Addr::LOCALHOST), V4(_)) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `V4(Ipv4Addr::LOCALHOST).is_ipv4()` error: redundant pattern matching, consider using `is_ipv6()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:29:8 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:28:8 | LL | if matches!(V6(Ipv6Addr::LOCALHOST), V6(_)) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `V6(Ipv6Addr::LOCALHOST).is_ipv6()` error: redundant pattern matching, consider using `is_ipv4()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:32:15 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:31:15 | LL | while let V4(_) = V4(Ipv4Addr::LOCALHOST) {} | ----------^^^^^-------------------------- help: try: `while V4(Ipv4Addr::LOCALHOST).is_ipv4()` error: redundant pattern matching, consider using `is_ipv6()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:35:15 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:34:15 | LL | while let V6(_) = V6(Ipv6Addr::LOCALHOST) {} | ----------^^^^^-------------------------- help: try: `while V6(Ipv6Addr::LOCALHOST).is_ipv6()` error: redundant pattern matching, consider using `is_ipv4()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:46:5 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:45:5 | LL | / match V4(Ipv4Addr::LOCALHOST) { LL | | @@ -54,7 +54,7 @@ LL | | }; | |_____^ help: try: `V4(Ipv4Addr::LOCALHOST).is_ipv4()` error: redundant pattern matching, consider using `is_ipv6()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:52:5 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:51:5 | LL | / match V4(Ipv4Addr::LOCALHOST) { LL | | @@ -64,7 +64,7 @@ LL | | }; | |_____^ help: try: `V4(Ipv4Addr::LOCALHOST).is_ipv6()` error: redundant pattern matching, consider using `is_ipv6()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:58:5 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:57:5 | LL | / match V6(Ipv6Addr::LOCALHOST) { LL | | @@ -74,7 +74,7 @@ LL | | }; | |_____^ help: try: `V6(Ipv6Addr::LOCALHOST).is_ipv6()` error: redundant pattern matching, consider using `is_ipv4()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:64:5 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:63:5 | LL | / match V6(Ipv6Addr::LOCALHOST) { LL | | @@ -84,49 +84,49 @@ LL | | }; | |_____^ help: try: `V6(Ipv6Addr::LOCALHOST).is_ipv4()` error: redundant pattern matching, consider using `is_ipv4()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:70:20 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:69:20 | LL | let _ = if let V4(_) = V4(Ipv4Addr::LOCALHOST) { | -------^^^^^-------------------------- help: try: `if V4(Ipv4Addr::LOCALHOST).is_ipv4()` error: redundant pattern matching, consider using `is_ipv4()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:79:20 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:78:20 | LL | let _ = if let V4(_) = gen_ipaddr() { | -------^^^^^--------------- help: try: `if gen_ipaddr().is_ipv4()` error: redundant pattern matching, consider using `is_ipv6()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:82:19 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:81:19 | LL | } else if let V6(_) = gen_ipaddr() { | -------^^^^^--------------- help: try: `if gen_ipaddr().is_ipv6()` error: redundant pattern matching, consider using `is_ipv4()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:95:12 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:94:12 | LL | if let V4(_) = V4(Ipv4Addr::LOCALHOST) {} | -------^^^^^-------------------------- help: try: `if V4(Ipv4Addr::LOCALHOST).is_ipv4()` error: redundant pattern matching, consider using `is_ipv6()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:98:12 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:97:12 | LL | if let V6(_) = V6(Ipv6Addr::LOCALHOST) {} | -------^^^^^-------------------------- help: try: `if V6(Ipv6Addr::LOCALHOST).is_ipv6()` error: redundant pattern matching, consider using `is_ipv4()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:101:15 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:100:15 | LL | while let V4(_) = V4(Ipv4Addr::LOCALHOST) {} | ----------^^^^^-------------------------- help: try: `while V4(Ipv4Addr::LOCALHOST).is_ipv4()` error: redundant pattern matching, consider using `is_ipv6()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:104:15 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:103:15 | LL | while let V6(_) = V6(Ipv6Addr::LOCALHOST) {} | ----------^^^^^-------------------------- help: try: `while V6(Ipv6Addr::LOCALHOST).is_ipv6()` error: redundant pattern matching, consider using `is_ipv4()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:107:5 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:106:5 | LL | / match V4(Ipv4Addr::LOCALHOST) { LL | | @@ -136,7 +136,7 @@ LL | | }; | |_____^ help: try: `V4(Ipv4Addr::LOCALHOST).is_ipv4()` error: redundant pattern matching, consider using `is_ipv6()` - --> tests/ui/redundant_pattern_matching_ipaddr.rs:113:5 + --> tests/ui/redundant_pattern_matching_ipaddr.rs:112:5 | LL | / match V6(Ipv6Addr::LOCALHOST) { LL | | diff --git a/tests/ui/redundant_pattern_matching_option.fixed b/tests/ui/redundant_pattern_matching_option.fixed index 5585006dc362b..33a5308bd3574 100644 --- a/tests/ui/redundant_pattern_matching_option.fixed +++ b/tests/ui/redundant_pattern_matching_option.fixed @@ -1,14 +1,12 @@ -#![warn(clippy::all)] +#![feature(let_chains, if_let_guard)] #![warn(clippy::redundant_pattern_matching)] #![allow( - unused_must_use, clippy::needless_bool, clippy::needless_if, clippy::match_like_matches_macro, clippy::equatable_if_let, clippy::if_same_then_else )] -#![feature(let_chains, if_let_guard)] fn issue_11174(boolean: bool, maybe_some: Option) -> bool { maybe_some.is_none() && (!boolean) diff --git a/tests/ui/redundant_pattern_matching_option.rs b/tests/ui/redundant_pattern_matching_option.rs index 581a432f38e11..60bce2994ea3a 100644 --- a/tests/ui/redundant_pattern_matching_option.rs +++ b/tests/ui/redundant_pattern_matching_option.rs @@ -1,14 +1,12 @@ -#![warn(clippy::all)] +#![feature(let_chains, if_let_guard)] #![warn(clippy::redundant_pattern_matching)] #![allow( - unused_must_use, clippy::needless_bool, clippy::needless_if, clippy::match_like_matches_macro, clippy::equatable_if_let, clippy::if_same_then_else )] -#![feature(let_chains, if_let_guard)] fn issue_11174(boolean: bool, maybe_some: Option) -> bool { matches!(maybe_some, None if !boolean) diff --git a/tests/ui/redundant_pattern_matching_option.stderr b/tests/ui/redundant_pattern_matching_option.stderr index 681602567d2f2..e5a6598898aa1 100644 --- a/tests/ui/redundant_pattern_matching_option.stderr +++ b/tests/ui/redundant_pattern_matching_option.stderr @@ -1,5 +1,5 @@ error: redundant pattern matching, consider using `is_none()` - --> tests/ui/redundant_pattern_matching_option.rs:14:5 + --> tests/ui/redundant_pattern_matching_option.rs:12:5 | LL | matches!(maybe_some, None if !boolean) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `maybe_some.is_none() && (!boolean)` @@ -8,55 +8,55 @@ LL | matches!(maybe_some, None if !boolean) = help: to override `-D warnings` add `#[allow(clippy::redundant_pattern_matching)]` error: redundant pattern matching, consider using `is_none()` - --> tests/ui/redundant_pattern_matching_option.rs:19:13 + --> tests/ui/redundant_pattern_matching_option.rs:17:13 | LL | let _ = matches!(maybe_some, None if boolean || boolean2); // guard needs parentheses | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `maybe_some.is_none() && (boolean || boolean2)` error: redundant pattern matching, consider using `is_none()` - --> tests/ui/redundant_pattern_matching_option.rs:35:12 + --> tests/ui/redundant_pattern_matching_option.rs:33:12 | LL | if let None = None::<()> {} | -------^^^^------------- help: try: `if None::<()>.is_none()` error: redundant pattern matching, consider using `is_some()` - --> tests/ui/redundant_pattern_matching_option.rs:38:12 + --> tests/ui/redundant_pattern_matching_option.rs:36:12 | LL | if let Some(_) = Some(42) {} | -------^^^^^^^----------- help: try: `if Some(42).is_some()` error: redundant pattern matching, consider using `is_some()` - --> tests/ui/redundant_pattern_matching_option.rs:41:12 + --> tests/ui/redundant_pattern_matching_option.rs:39:12 | LL | if let Some(_) = Some(42) { | -------^^^^^^^----------- help: try: `if Some(42).is_some()` error: redundant pattern matching, consider using `is_some()` - --> tests/ui/redundant_pattern_matching_option.rs:48:15 + --> tests/ui/redundant_pattern_matching_option.rs:46:15 | LL | while let Some(_) = Some(42) {} | ----------^^^^^^^----------- help: try: `while Some(42).is_some()` error: redundant pattern matching, consider using `is_none()` - --> tests/ui/redundant_pattern_matching_option.rs:51:15 + --> tests/ui/redundant_pattern_matching_option.rs:49:15 | LL | while let None = Some(42) {} | ----------^^^^----------- help: try: `while Some(42).is_none()` error: redundant pattern matching, consider using `is_none()` - --> tests/ui/redundant_pattern_matching_option.rs:54:15 + --> tests/ui/redundant_pattern_matching_option.rs:52:15 | LL | while let None = None::<()> {} | ----------^^^^------------- help: try: `while None::<()>.is_none()` error: redundant pattern matching, consider using `is_some()` - --> tests/ui/redundant_pattern_matching_option.rs:58:15 + --> tests/ui/redundant_pattern_matching_option.rs:56:15 | LL | while let Some(_) = v.pop() { | ----------^^^^^^^---------- help: try: `while v.pop().is_some()` error: redundant pattern matching, consider using `is_some()` - --> tests/ui/redundant_pattern_matching_option.rs:67:5 + --> tests/ui/redundant_pattern_matching_option.rs:65:5 | LL | / match Some(42) { LL | | @@ -66,7 +66,7 @@ LL | | }; | |_____^ help: try: `Some(42).is_some()` error: redundant pattern matching, consider using `is_none()` - --> tests/ui/redundant_pattern_matching_option.rs:73:5 + --> tests/ui/redundant_pattern_matching_option.rs:71:5 | LL | / match None::<()> { LL | | @@ -76,7 +76,7 @@ LL | | }; | |_____^ help: try: `None::<()>.is_none()` error: redundant pattern matching, consider using `is_none()` - --> tests/ui/redundant_pattern_matching_option.rs:79:13 + --> tests/ui/redundant_pattern_matching_option.rs:77:13 | LL | let _ = match None::<()> { | _____________^ @@ -87,55 +87,55 @@ LL | | }; | |_____^ help: try: `None::<()>.is_none()` error: redundant pattern matching, consider using `is_some()` - --> tests/ui/redundant_pattern_matching_option.rs:86:20 + --> tests/ui/redundant_pattern_matching_option.rs:84:20 | LL | let _ = if let Some(_) = opt { true } else { false }; | -------^^^^^^^------ help: try: `if opt.is_some()` error: redundant pattern matching, consider using `is_some()` - --> tests/ui/redundant_pattern_matching_option.rs:93:20 + --> tests/ui/redundant_pattern_matching_option.rs:91:20 | LL | let _ = if let Some(_) = gen_opt() { | -------^^^^^^^------------ help: try: `if gen_opt().is_some()` error: redundant pattern matching, consider using `is_none()` - --> tests/ui/redundant_pattern_matching_option.rs:96:19 + --> tests/ui/redundant_pattern_matching_option.rs:94:19 | LL | } else if let None = gen_opt() { | -------^^^^------------ help: try: `if gen_opt().is_none()` error: redundant pattern matching, consider using `is_some()` - --> tests/ui/redundant_pattern_matching_option.rs:103:12 + --> tests/ui/redundant_pattern_matching_option.rs:101:12 | LL | if let Some(..) = gen_opt() {} | -------^^^^^^^^------------ help: try: `if gen_opt().is_some()` error: redundant pattern matching, consider using `is_some()` - --> tests/ui/redundant_pattern_matching_option.rs:119:12 + --> tests/ui/redundant_pattern_matching_option.rs:117:12 | LL | if let Some(_) = Some(42) {} | -------^^^^^^^----------- help: try: `if Some(42).is_some()` error: redundant pattern matching, consider using `is_none()` - --> tests/ui/redundant_pattern_matching_option.rs:122:12 + --> tests/ui/redundant_pattern_matching_option.rs:120:12 | LL | if let None = None::<()> {} | -------^^^^------------- help: try: `if None::<()>.is_none()` error: redundant pattern matching, consider using `is_some()` - --> tests/ui/redundant_pattern_matching_option.rs:125:15 + --> tests/ui/redundant_pattern_matching_option.rs:123:15 | LL | while let Some(_) = Some(42) {} | ----------^^^^^^^----------- help: try: `while Some(42).is_some()` error: redundant pattern matching, consider using `is_none()` - --> tests/ui/redundant_pattern_matching_option.rs:128:15 + --> tests/ui/redundant_pattern_matching_option.rs:126:15 | LL | while let None = None::<()> {} | ----------^^^^------------- help: try: `while None::<()>.is_none()` error: redundant pattern matching, consider using `is_some()` - --> tests/ui/redundant_pattern_matching_option.rs:131:5 + --> tests/ui/redundant_pattern_matching_option.rs:129:5 | LL | / match Some(42) { LL | | @@ -145,7 +145,7 @@ LL | | }; | |_____^ help: try: `Some(42).is_some()` error: redundant pattern matching, consider using `is_none()` - --> tests/ui/redundant_pattern_matching_option.rs:137:5 + --> tests/ui/redundant_pattern_matching_option.rs:135:5 | LL | / match None::<()> { LL | | @@ -155,19 +155,19 @@ LL | | }; | |_____^ help: try: `None::<()>.is_none()` error: redundant pattern matching, consider using `is_none()` - --> tests/ui/redundant_pattern_matching_option.rs:146:12 + --> tests/ui/redundant_pattern_matching_option.rs:144:12 | LL | if let None = *(&None::<()>) {} | -------^^^^----------------- help: try: `if (&None::<()>).is_none()` error: redundant pattern matching, consider using `is_none()` - --> tests/ui/redundant_pattern_matching_option.rs:148:12 + --> tests/ui/redundant_pattern_matching_option.rs:146:12 | LL | if let None = *&None::<()> {} | -------^^^^--------------- help: try: `if (&None::<()>).is_none()` error: redundant pattern matching, consider using `is_some()` - --> tests/ui/redundant_pattern_matching_option.rs:155:5 + --> tests/ui/redundant_pattern_matching_option.rs:153:5 | LL | / match x { LL | | @@ -177,7 +177,7 @@ LL | | }; | |_____^ help: try: `x.is_some()` error: redundant pattern matching, consider using `is_none()` - --> tests/ui/redundant_pattern_matching_option.rs:161:5 + --> tests/ui/redundant_pattern_matching_option.rs:159:5 | LL | / match x { LL | | @@ -187,7 +187,7 @@ LL | | }; | |_____^ help: try: `x.is_none()` error: redundant pattern matching, consider using `is_none()` - --> tests/ui/redundant_pattern_matching_option.rs:167:5 + --> tests/ui/redundant_pattern_matching_option.rs:165:5 | LL | / match x { LL | | @@ -197,7 +197,7 @@ LL | | }; | |_____^ help: try: `x.is_none()` error: redundant pattern matching, consider using `is_some()` - --> tests/ui/redundant_pattern_matching_option.rs:173:5 + --> tests/ui/redundant_pattern_matching_option.rs:171:5 | LL | / match x { LL | | @@ -207,19 +207,19 @@ LL | | }; | |_____^ help: try: `x.is_some()` error: redundant pattern matching, consider using `is_some()` - --> tests/ui/redundant_pattern_matching_option.rs:189:13 + --> tests/ui/redundant_pattern_matching_option.rs:187:13 | LL | let _ = matches!(x, Some(_)); | ^^^^^^^^^^^^^^^^^^^^ help: try: `x.is_some()` error: redundant pattern matching, consider using `is_none()` - --> tests/ui/redundant_pattern_matching_option.rs:192:13 + --> tests/ui/redundant_pattern_matching_option.rs:190:13 | LL | let _ = matches!(x, None); | ^^^^^^^^^^^^^^^^^ help: try: `x.is_none()` error: redundant pattern matching, consider using `is_none()` - --> tests/ui/redundant_pattern_matching_option.rs:203:17 + --> tests/ui/redundant_pattern_matching_option.rs:201:17 | LL | let _ = matches!(*p, None); | ^^^^^^^^^^^^^^^^^^ help: try: `(*p).is_none()` diff --git a/tests/ui/redundant_pattern_matching_poll.fixed b/tests/ui/redundant_pattern_matching_poll.fixed index c8e18e8676f21..800889b5fda0a 100644 --- a/tests/ui/redundant_pattern_matching_poll.fixed +++ b/tests/ui/redundant_pattern_matching_poll.fixed @@ -1,7 +1,5 @@ -#![warn(clippy::all)] #![warn(clippy::redundant_pattern_matching)] #![allow( - unused_must_use, clippy::needless_bool, clippy::needless_if, clippy::match_like_matches_macro, diff --git a/tests/ui/redundant_pattern_matching_poll.rs b/tests/ui/redundant_pattern_matching_poll.rs index 727503d21a54a..1668c2ff2bbac 100644 --- a/tests/ui/redundant_pattern_matching_poll.rs +++ b/tests/ui/redundant_pattern_matching_poll.rs @@ -1,7 +1,5 @@ -#![warn(clippy::all)] #![warn(clippy::redundant_pattern_matching)] #![allow( - unused_must_use, clippy::needless_bool, clippy::needless_if, clippy::match_like_matches_macro, diff --git a/tests/ui/redundant_pattern_matching_poll.stderr b/tests/ui/redundant_pattern_matching_poll.stderr index 5f659184f7b38..5cd9d9636e466 100644 --- a/tests/ui/redundant_pattern_matching_poll.stderr +++ b/tests/ui/redundant_pattern_matching_poll.stderr @@ -1,5 +1,5 @@ error: redundant pattern matching, consider using `is_pending()` - --> tests/ui/redundant_pattern_matching_poll.rs:15:12 + --> tests/ui/redundant_pattern_matching_poll.rs:13:12 | LL | if let Pending = Pending::<()> {} | -------^^^^^^^---------------- help: try: `if Pending::<()>.is_pending()` @@ -8,49 +8,49 @@ LL | if let Pending = Pending::<()> {} = help: to override `-D warnings` add `#[allow(clippy::redundant_pattern_matching)]` error: redundant pattern matching, consider using `is_ready()` - --> tests/ui/redundant_pattern_matching_poll.rs:18:12 + --> tests/ui/redundant_pattern_matching_poll.rs:16:12 | LL | if let Ready(_) = Ready(42) {} | -------^^^^^^^^------------ help: try: `if Ready(42).is_ready()` error: redundant pattern matching, consider using `is_ready()` - --> tests/ui/redundant_pattern_matching_poll.rs:21:12 + --> tests/ui/redundant_pattern_matching_poll.rs:19:12 | LL | if let Ready(_) = Ready(42) { | -------^^^^^^^^------------ help: try: `if Ready(42).is_ready()` error: redundant pattern matching, consider using `is_ready()` - --> tests/ui/redundant_pattern_matching_poll.rs:29:8 + --> tests/ui/redundant_pattern_matching_poll.rs:27:8 | LL | if matches!(Ready(42), Ready(_)) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Ready(42).is_ready()` error: redundant pattern matching, consider using `is_pending()` - --> tests/ui/redundant_pattern_matching_poll.rs:33:8 + --> tests/ui/redundant_pattern_matching_poll.rs:31:8 | LL | if matches!(Pending::<()>, Pending) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Pending::<()>.is_pending()` error: redundant pattern matching, consider using `is_ready()` - --> tests/ui/redundant_pattern_matching_poll.rs:36:15 + --> tests/ui/redundant_pattern_matching_poll.rs:34:15 | LL | while let Ready(_) = Ready(42) {} | ----------^^^^^^^^------------ help: try: `while Ready(42).is_ready()` error: redundant pattern matching, consider using `is_pending()` - --> tests/ui/redundant_pattern_matching_poll.rs:39:15 + --> tests/ui/redundant_pattern_matching_poll.rs:37:15 | LL | while let Pending = Ready(42) {} | ----------^^^^^^^------------ help: try: `while Ready(42).is_pending()` error: redundant pattern matching, consider using `is_pending()` - --> tests/ui/redundant_pattern_matching_poll.rs:42:15 + --> tests/ui/redundant_pattern_matching_poll.rs:40:15 | LL | while let Pending = Pending::<()> {} | ----------^^^^^^^---------------- help: try: `while Pending::<()>.is_pending()` error: redundant pattern matching, consider using `is_ready()` - --> tests/ui/redundant_pattern_matching_poll.rs:49:5 + --> tests/ui/redundant_pattern_matching_poll.rs:47:5 | LL | / match Ready(42) { LL | | @@ -60,7 +60,7 @@ LL | | }; | |_____^ help: try: `Ready(42).is_ready()` error: redundant pattern matching, consider using `is_pending()` - --> tests/ui/redundant_pattern_matching_poll.rs:55:5 + --> tests/ui/redundant_pattern_matching_poll.rs:53:5 | LL | / match Pending::<()> { LL | | @@ -70,7 +70,7 @@ LL | | }; | |_____^ help: try: `Pending::<()>.is_pending()` error: redundant pattern matching, consider using `is_pending()` - --> tests/ui/redundant_pattern_matching_poll.rs:61:13 + --> tests/ui/redundant_pattern_matching_poll.rs:59:13 | LL | let _ = match Pending::<()> { | _____________^ @@ -81,49 +81,49 @@ LL | | }; | |_____^ help: try: `Pending::<()>.is_pending()` error: redundant pattern matching, consider using `is_ready()` - --> tests/ui/redundant_pattern_matching_poll.rs:68:20 + --> tests/ui/redundant_pattern_matching_poll.rs:66:20 | LL | let _ = if let Ready(_) = poll { true } else { false }; | -------^^^^^^^^------- help: try: `if poll.is_ready()` error: redundant pattern matching, consider using `is_ready()` - --> tests/ui/redundant_pattern_matching_poll.rs:73:20 + --> tests/ui/redundant_pattern_matching_poll.rs:71:20 | LL | let _ = if let Ready(_) = gen_poll() { | -------^^^^^^^^------------- help: try: `if gen_poll().is_ready()` error: redundant pattern matching, consider using `is_pending()` - --> tests/ui/redundant_pattern_matching_poll.rs:76:19 + --> tests/ui/redundant_pattern_matching_poll.rs:74:19 | LL | } else if let Pending = gen_poll() { | -------^^^^^^^------------- help: try: `if gen_poll().is_pending()` error: redundant pattern matching, consider using `is_ready()` - --> tests/ui/redundant_pattern_matching_poll.rs:93:12 + --> tests/ui/redundant_pattern_matching_poll.rs:91:12 | LL | if let Ready(_) = Ready(42) {} | -------^^^^^^^^------------ help: try: `if Ready(42).is_ready()` error: redundant pattern matching, consider using `is_pending()` - --> tests/ui/redundant_pattern_matching_poll.rs:96:12 + --> tests/ui/redundant_pattern_matching_poll.rs:94:12 | LL | if let Pending = Pending::<()> {} | -------^^^^^^^---------------- help: try: `if Pending::<()>.is_pending()` error: redundant pattern matching, consider using `is_ready()` - --> tests/ui/redundant_pattern_matching_poll.rs:99:15 + --> tests/ui/redundant_pattern_matching_poll.rs:97:15 | LL | while let Ready(_) = Ready(42) {} | ----------^^^^^^^^------------ help: try: `while Ready(42).is_ready()` error: redundant pattern matching, consider using `is_pending()` - --> tests/ui/redundant_pattern_matching_poll.rs:102:15 + --> tests/ui/redundant_pattern_matching_poll.rs:100:15 | LL | while let Pending = Pending::<()> {} | ----------^^^^^^^---------------- help: try: `while Pending::<()>.is_pending()` error: redundant pattern matching, consider using `is_ready()` - --> tests/ui/redundant_pattern_matching_poll.rs:105:5 + --> tests/ui/redundant_pattern_matching_poll.rs:103:5 | LL | / match Ready(42) { LL | | @@ -133,7 +133,7 @@ LL | | }; | |_____^ help: try: `Ready(42).is_ready()` error: redundant pattern matching, consider using `is_pending()` - --> tests/ui/redundant_pattern_matching_poll.rs:111:5 + --> tests/ui/redundant_pattern_matching_poll.rs:109:5 | LL | / match Pending::<()> { LL | | diff --git a/tests/ui/redundant_pattern_matching_result.fixed b/tests/ui/redundant_pattern_matching_result.fixed index 1158796083147..dab816716d598 100644 --- a/tests/ui/redundant_pattern_matching_result.fixed +++ b/tests/ui/redundant_pattern_matching_result.fixed @@ -1,6 +1,5 @@ -#![warn(clippy::all)] #![warn(clippy::redundant_pattern_matching)] -#![allow(deprecated, unused_must_use)] +#![allow(deprecated)] #![allow( clippy::if_same_then_else, clippy::match_like_matches_macro, diff --git a/tests/ui/redundant_pattern_matching_result.rs b/tests/ui/redundant_pattern_matching_result.rs index 35f8f91b31527..3fd70515d0847 100644 --- a/tests/ui/redundant_pattern_matching_result.rs +++ b/tests/ui/redundant_pattern_matching_result.rs @@ -1,6 +1,5 @@ -#![warn(clippy::all)] #![warn(clippy::redundant_pattern_matching)] -#![allow(deprecated, unused_must_use)] +#![allow(deprecated)] #![allow( clippy::if_same_then_else, clippy::match_like_matches_macro, diff --git a/tests/ui/redundant_pattern_matching_result.stderr b/tests/ui/redundant_pattern_matching_result.stderr index 4f78b95356c21..7e7d27d07a7f6 100644 --- a/tests/ui/redundant_pattern_matching_result.stderr +++ b/tests/ui/redundant_pattern_matching_result.stderr @@ -1,5 +1,5 @@ error: redundant pattern matching, consider using `is_ok()` - --> tests/ui/redundant_pattern_matching_result.rs:15:12 + --> tests/ui/redundant_pattern_matching_result.rs:14:12 | LL | if let Ok(_) = &result {} | -------^^^^^---------- help: try: `if result.is_ok()` @@ -8,31 +8,31 @@ LL | if let Ok(_) = &result {} = help: to override `-D warnings` add `#[allow(clippy::redundant_pattern_matching)]` error: redundant pattern matching, consider using `is_ok()` - --> tests/ui/redundant_pattern_matching_result.rs:18:12 + --> tests/ui/redundant_pattern_matching_result.rs:17:12 | LL | if let Ok(_) = Ok::(42) {} | -------^^^^^--------------------- help: try: `if Ok::(42).is_ok()` error: redundant pattern matching, consider using `is_err()` - --> tests/ui/redundant_pattern_matching_result.rs:21:12 + --> tests/ui/redundant_pattern_matching_result.rs:20:12 | LL | if let Err(_) = Err::(42) {} | -------^^^^^^---------------------- help: try: `if Err::(42).is_err()` error: redundant pattern matching, consider using `is_ok()` - --> tests/ui/redundant_pattern_matching_result.rs:24:15 + --> tests/ui/redundant_pattern_matching_result.rs:23:15 | LL | while let Ok(_) = Ok::(10) {} | ----------^^^^^--------------------- help: try: `while Ok::(10).is_ok()` error: redundant pattern matching, consider using `is_err()` - --> tests/ui/redundant_pattern_matching_result.rs:27:15 + --> tests/ui/redundant_pattern_matching_result.rs:26:15 | LL | while let Err(_) = Ok::(10) {} | ----------^^^^^^--------------------- help: try: `while Ok::(10).is_err()` error: redundant pattern matching, consider using `is_ok()` - --> tests/ui/redundant_pattern_matching_result.rs:38:5 + --> tests/ui/redundant_pattern_matching_result.rs:37:5 | LL | / match Ok::(42) { LL | | @@ -42,7 +42,7 @@ LL | | }; | |_____^ help: try: `Ok::(42).is_ok()` error: redundant pattern matching, consider using `is_err()` - --> tests/ui/redundant_pattern_matching_result.rs:44:5 + --> tests/ui/redundant_pattern_matching_result.rs:43:5 | LL | / match Ok::(42) { LL | | @@ -52,7 +52,7 @@ LL | | }; | |_____^ help: try: `Ok::(42).is_err()` error: redundant pattern matching, consider using `is_err()` - --> tests/ui/redundant_pattern_matching_result.rs:50:5 + --> tests/ui/redundant_pattern_matching_result.rs:49:5 | LL | / match Err::(42) { LL | | @@ -62,7 +62,7 @@ LL | | }; | |_____^ help: try: `Err::(42).is_err()` error: redundant pattern matching, consider using `is_ok()` - --> tests/ui/redundant_pattern_matching_result.rs:56:5 + --> tests/ui/redundant_pattern_matching_result.rs:55:5 | LL | / match Err::(42) { LL | | @@ -72,73 +72,73 @@ LL | | }; | |_____^ help: try: `Err::(42).is_ok()` error: redundant pattern matching, consider using `is_ok()` - --> tests/ui/redundant_pattern_matching_result.rs:62:20 + --> tests/ui/redundant_pattern_matching_result.rs:61:20 | LL | let _ = if let Ok(_) = Ok::(4) { true } else { false }; | -------^^^^^--------------------- help: try: `if Ok::(4).is_ok()` error: redundant pattern matching, consider using `is_ok()` - --> tests/ui/redundant_pattern_matching_result.rs:71:20 + --> tests/ui/redundant_pattern_matching_result.rs:70:20 | LL | let _ = if let Ok(_) = gen_res() { | -------^^^^^------------ help: try: `if gen_res().is_ok()` error: redundant pattern matching, consider using `is_err()` - --> tests/ui/redundant_pattern_matching_result.rs:74:19 + --> tests/ui/redundant_pattern_matching_result.rs:73:19 | LL | } else if let Err(_) = gen_res() { | -------^^^^^^------------ help: try: `if gen_res().is_err()` error: redundant pattern matching, consider using `is_some()` - --> tests/ui/redundant_pattern_matching_result.rs:98:19 + --> tests/ui/redundant_pattern_matching_result.rs:97:19 | LL | while let Some(_) = r#try!(result_opt()) {} | ----------^^^^^^^----------------------- help: try: `while r#try!(result_opt()).is_some()` error: redundant pattern matching, consider using `is_some()` - --> tests/ui/redundant_pattern_matching_result.rs:100:16 + --> tests/ui/redundant_pattern_matching_result.rs:99:16 | LL | if let Some(_) = r#try!(result_opt()) {} | -------^^^^^^^----------------------- help: try: `if r#try!(result_opt()).is_some()` error: redundant pattern matching, consider using `is_some()` - --> tests/ui/redundant_pattern_matching_result.rs:107:12 + --> tests/ui/redundant_pattern_matching_result.rs:106:12 | LL | if let Some(_) = m!() {} | -------^^^^^^^------- help: try: `if m!().is_some()` error: redundant pattern matching, consider using `is_some()` - --> tests/ui/redundant_pattern_matching_result.rs:109:15 + --> tests/ui/redundant_pattern_matching_result.rs:108:15 | LL | while let Some(_) = m!() {} | ----------^^^^^^^------- help: try: `while m!().is_some()` error: redundant pattern matching, consider using `is_ok()` - --> tests/ui/redundant_pattern_matching_result.rs:128:12 + --> tests/ui/redundant_pattern_matching_result.rs:127:12 | LL | if let Ok(_) = Ok::(42) {} | -------^^^^^--------------------- help: try: `if Ok::(42).is_ok()` error: redundant pattern matching, consider using `is_err()` - --> tests/ui/redundant_pattern_matching_result.rs:131:12 + --> tests/ui/redundant_pattern_matching_result.rs:130:12 | LL | if let Err(_) = Err::(42) {} | -------^^^^^^---------------------- help: try: `if Err::(42).is_err()` error: redundant pattern matching, consider using `is_ok()` - --> tests/ui/redundant_pattern_matching_result.rs:134:15 + --> tests/ui/redundant_pattern_matching_result.rs:133:15 | LL | while let Ok(_) = Ok::(10) {} | ----------^^^^^--------------------- help: try: `while Ok::(10).is_ok()` error: redundant pattern matching, consider using `is_err()` - --> tests/ui/redundant_pattern_matching_result.rs:137:15 + --> tests/ui/redundant_pattern_matching_result.rs:136:15 | LL | while let Err(_) = Ok::(10) {} | ----------^^^^^^--------------------- help: try: `while Ok::(10).is_err()` error: redundant pattern matching, consider using `is_ok()` - --> tests/ui/redundant_pattern_matching_result.rs:140:5 + --> tests/ui/redundant_pattern_matching_result.rs:139:5 | LL | / match Ok::(42) { LL | | @@ -148,7 +148,7 @@ LL | | }; | |_____^ help: try: `Ok::(42).is_ok()` error: redundant pattern matching, consider using `is_err()` - --> tests/ui/redundant_pattern_matching_result.rs:146:5 + --> tests/ui/redundant_pattern_matching_result.rs:145:5 | LL | / match Err::(42) { LL | | @@ -158,7 +158,7 @@ LL | | }; | |_____^ help: try: `Err::(42).is_err()` error: redundant pattern matching, consider using `is_ok()` - --> tests/ui/redundant_pattern_matching_result.rs:157:5 + --> tests/ui/redundant_pattern_matching_result.rs:156:5 | LL | / match x { LL | | @@ -168,7 +168,7 @@ LL | | }; | |_____^ help: try: `x.is_ok()` error: redundant pattern matching, consider using `is_err()` - --> tests/ui/redundant_pattern_matching_result.rs:163:5 + --> tests/ui/redundant_pattern_matching_result.rs:162:5 | LL | / match x { LL | | @@ -178,7 +178,7 @@ LL | | }; | |_____^ help: try: `x.is_err()` error: redundant pattern matching, consider using `is_err()` - --> tests/ui/redundant_pattern_matching_result.rs:169:5 + --> tests/ui/redundant_pattern_matching_result.rs:168:5 | LL | / match x { LL | | @@ -188,7 +188,7 @@ LL | | }; | |_____^ help: try: `x.is_err()` error: redundant pattern matching, consider using `is_ok()` - --> tests/ui/redundant_pattern_matching_result.rs:175:5 + --> tests/ui/redundant_pattern_matching_result.rs:174:5 | LL | / match x { LL | | @@ -198,13 +198,13 @@ LL | | }; | |_____^ help: try: `x.is_ok()` error: redundant pattern matching, consider using `is_ok()` - --> tests/ui/redundant_pattern_matching_result.rs:197:13 + --> tests/ui/redundant_pattern_matching_result.rs:196:13 | LL | let _ = matches!(x, Ok(_)); | ^^^^^^^^^^^^^^^^^^ help: try: `x.is_ok()` error: redundant pattern matching, consider using `is_err()` - --> tests/ui/redundant_pattern_matching_result.rs:200:13 + --> tests/ui/redundant_pattern_matching_result.rs:199:13 | LL | let _ = matches!(x, Err(_)); | ^^^^^^^^^^^^^^^^^^^ help: try: `x.is_err()` diff --git a/tests/ui/redundant_pub_crate.fixed b/tests/ui/redundant_pub_crate.fixed index a6450123f4c9d..8a30fedede4a4 100644 --- a/tests/ui/redundant_pub_crate.fixed +++ b/tests/ui/redundant_pub_crate.fixed @@ -131,6 +131,14 @@ mod m4 { } } +mod m5 { + pub mod m5_1 {} + // Test that the primary span isn't butchered for item kinds that don't have an ident. + pub use m5_1::*; //~ redundant_pub_crate + #[rustfmt::skip] + pub use m5_1::{*}; //~ redundant_pub_crate +} + pub use m4::*; mod issue_8732 { diff --git a/tests/ui/redundant_pub_crate.rs b/tests/ui/redundant_pub_crate.rs index 7415d34d50cc7..45ba13a63b2e2 100644 --- a/tests/ui/redundant_pub_crate.rs +++ b/tests/ui/redundant_pub_crate.rs @@ -131,6 +131,14 @@ mod m4 { } } +mod m5 { + pub mod m5_1 {} + // Test that the primary span isn't butchered for item kinds that don't have an ident. + pub(crate) use m5_1::*; //~ redundant_pub_crate + #[rustfmt::skip] + pub(crate) use m5_1::{*}; //~ redundant_pub_crate +} + pub use m4::*; mod issue_8732 { diff --git a/tests/ui/redundant_pub_crate.stderr b/tests/ui/redundant_pub_crate.stderr index 95909ea8b0663..4a47a321028d1 100644 --- a/tests/ui/redundant_pub_crate.stderr +++ b/tests/ui/redundant_pub_crate.stderr @@ -129,5 +129,21 @@ LL | pub(crate) fn g() {} // private due to m4_2 | | | help: consider using: `pub` -error: aborting due to 16 previous errors +error: pub(crate) import inside private module + --> tests/ui/redundant_pub_crate.rs:137:5 + | +LL | pub(crate) use m5_1::*; + | ----------^^^^^^^^^^^^^ + | | + | help: consider using: `pub` + +error: pub(crate) import inside private module + --> tests/ui/redundant_pub_crate.rs:139:27 + | +LL | pub(crate) use m5_1::{*}; + | ---------- ^ + | | + | help: consider using: `pub` + +error: aborting due to 18 previous errors diff --git a/tests/ui/redundant_test_prefix.fixed b/tests/ui/redundant_test_prefix.fixed new file mode 100644 index 0000000000000..b99771f0640ca --- /dev/null +++ b/tests/ui/redundant_test_prefix.fixed @@ -0,0 +1,158 @@ +#![allow(dead_code)] +#![warn(clippy::redundant_test_prefix)] + +fn main() { + // Normal function, no redundant prefix. +} + +fn f1() { + // Normal function, no redundant prefix. +} + +fn test_f2() { + // Has prefix, but no `#[test]` attribute, ignore. +} + +#[test] +fn f3() { + //~^ redundant_test_prefix + + // Has prefix, has `#[test]` attribute. Not within a `#[cfg(test)]`. + // No collision with other functions, should emit warning. +} + +#[cfg(test)] +#[test] +fn f4() { + //~^ redundant_test_prefix + + // Has prefix, has `#[test]` attribute, within a `#[cfg(test)]`. + // No collision with other functions, should emit warning. +} + +mod m1 { + pub fn f5() {} +} + +#[cfg(test)] +#[test] +fn f6() { + //~^ redundant_test_prefix + + use m1::f5; + + f5(); + // Has prefix, has `#[test]` attribute, within a `#[cfg(test)]`. + // No collision, has function call, but it will not result in recursion. +} + +#[cfg(test)] +mod tests { + use super::*; + + #[test] + fn foo() { + //~^ redundant_test_prefix + } + + #[test] + fn foo_with_call() { + //~^ redundant_test_prefix + + main(); + } + + #[test] + fn f1() { + //~^ redundant_test_prefix + } + + #[test] + fn f2() { + //~^ redundant_test_prefix + } + + #[test] + fn f3() { + //~^ redundant_test_prefix + } + + #[test] + fn f4() { + //~^ redundant_test_prefix + } + + #[test] + fn f5() { + //~^ redundant_test_prefix + } + + #[test] + fn f6() { + //~^ redundant_test_prefix + } +} + +mod tests_no_annotations { + use super::*; + + #[test] + fn foo() { + //~^ redundant_test_prefix + } + + #[test] + fn foo_with_call() { + //~^ redundant_test_prefix + + main(); + } + + #[test] + fn f1() { + //~^ redundant_test_prefix + } + + #[test] + fn f2() { + //~^ redundant_test_prefix + } + + #[test] + fn f3() { + //~^ redundant_test_prefix + } + + #[test] + fn f4() { + //~^ redundant_test_prefix + } + + #[test] + fn f5() { + //~^ redundant_test_prefix + } + + #[test] + fn f6() { + //~^ redundant_test_prefix + } +} + +// This test is inspired by real test in `clippy_utils/src/sugg.rs`. +// The `is_in_test_function()` checks whether any identifier within a given node's parents is +// marked with `#[test]` attribute. Thus flagging false positives when nested functions are +// prefixed with `test_`. Therefore `is_test_function()` has been defined in `clippy_utils`, +// allowing to select only functions that are immediately marked with `#[test]` annotation. +// +// This test case ensures that for such nested functions no error is emitted. +#[test] +fn not_op() { + fn test_not(foo: bool) { + assert!(foo); + } + + // Use helper function + test_not(true); + test_not(false); +} diff --git a/tests/ui/redundant_test_prefix.rs b/tests/ui/redundant_test_prefix.rs new file mode 100644 index 0000000000000..3aec577cffa16 --- /dev/null +++ b/tests/ui/redundant_test_prefix.rs @@ -0,0 +1,158 @@ +#![allow(dead_code)] +#![warn(clippy::redundant_test_prefix)] + +fn main() { + // Normal function, no redundant prefix. +} + +fn f1() { + // Normal function, no redundant prefix. +} + +fn test_f2() { + // Has prefix, but no `#[test]` attribute, ignore. +} + +#[test] +fn test_f3() { + //~^ redundant_test_prefix + + // Has prefix, has `#[test]` attribute. Not within a `#[cfg(test)]`. + // No collision with other functions, should emit warning. +} + +#[cfg(test)] +#[test] +fn test_f4() { + //~^ redundant_test_prefix + + // Has prefix, has `#[test]` attribute, within a `#[cfg(test)]`. + // No collision with other functions, should emit warning. +} + +mod m1 { + pub fn f5() {} +} + +#[cfg(test)] +#[test] +fn test_f6() { + //~^ redundant_test_prefix + + use m1::f5; + + f5(); + // Has prefix, has `#[test]` attribute, within a `#[cfg(test)]`. + // No collision, has function call, but it will not result in recursion. +} + +#[cfg(test)] +mod tests { + use super::*; + + #[test] + fn test_foo() { + //~^ redundant_test_prefix + } + + #[test] + fn test_foo_with_call() { + //~^ redundant_test_prefix + + main(); + } + + #[test] + fn test_f1() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f2() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f3() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f4() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f5() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f6() { + //~^ redundant_test_prefix + } +} + +mod tests_no_annotations { + use super::*; + + #[test] + fn test_foo() { + //~^ redundant_test_prefix + } + + #[test] + fn test_foo_with_call() { + //~^ redundant_test_prefix + + main(); + } + + #[test] + fn test_f1() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f2() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f3() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f4() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f5() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f6() { + //~^ redundant_test_prefix + } +} + +// This test is inspired by real test in `clippy_utils/src/sugg.rs`. +// The `is_in_test_function()` checks whether any identifier within a given node's parents is +// marked with `#[test]` attribute. Thus flagging false positives when nested functions are +// prefixed with `test_`. Therefore `is_test_function()` has been defined in `clippy_utils`, +// allowing to select only functions that are immediately marked with `#[test]` annotation. +// +// This test case ensures that for such nested functions no error is emitted. +#[test] +fn not_op() { + fn test_not(foo: bool) { + assert!(foo); + } + + // Use helper function + test_not(true); + test_not(false); +} diff --git a/tests/ui/redundant_test_prefix.stderr b/tests/ui/redundant_test_prefix.stderr new file mode 100644 index 0000000000000..d156af586df3f --- /dev/null +++ b/tests/ui/redundant_test_prefix.stderr @@ -0,0 +1,119 @@ +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix.rs:17:4 + | +LL | fn test_f3() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f3` + | + = note: `-D clippy::redundant-test-prefix` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::redundant_test_prefix)]` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix.rs:26:4 + | +LL | fn test_f4() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f4` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix.rs:39:4 + | +LL | fn test_f6() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f6` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix.rs:54:8 + | +LL | fn test_foo() { + | ^^^^^^^^ help: consider removing the `test_` prefix: `foo` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix.rs:59:8 + | +LL | fn test_foo_with_call() { + | ^^^^^^^^^^^^^^^^^^ help: consider removing the `test_` prefix: `foo_with_call` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix.rs:66:8 + | +LL | fn test_f1() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f1` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix.rs:71:8 + | +LL | fn test_f2() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f2` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix.rs:76:8 + | +LL | fn test_f3() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f3` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix.rs:81:8 + | +LL | fn test_f4() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f4` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix.rs:86:8 + | +LL | fn test_f5() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f5` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix.rs:91:8 + | +LL | fn test_f6() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f6` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix.rs:100:8 + | +LL | fn test_foo() { + | ^^^^^^^^ help: consider removing the `test_` prefix: `foo` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix.rs:105:8 + | +LL | fn test_foo_with_call() { + | ^^^^^^^^^^^^^^^^^^ help: consider removing the `test_` prefix: `foo_with_call` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix.rs:112:8 + | +LL | fn test_f1() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f1` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix.rs:117:8 + | +LL | fn test_f2() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f2` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix.rs:122:8 + | +LL | fn test_f3() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f3` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix.rs:127:8 + | +LL | fn test_f4() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f4` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix.rs:132:8 + | +LL | fn test_f5() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f5` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix.rs:137:8 + | +LL | fn test_f6() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f6` + +error: aborting due to 19 previous errors + diff --git a/tests/ui/redundant_test_prefix_noautofix.rs b/tests/ui/redundant_test_prefix_noautofix.rs new file mode 100644 index 0000000000000..6ad5d011d8b71 --- /dev/null +++ b/tests/ui/redundant_test_prefix_noautofix.rs @@ -0,0 +1,288 @@ +//@no-rustfix: name conflicts + +#![allow(dead_code)] +#![warn(clippy::redundant_test_prefix)] + +fn main() { + // Normal function, no redundant prefix. +} + +fn f1() { + // Normal function, no redundant prefix. +} + +fn test_f2() { + // Has prefix, but no `#[test]` attribute, ignore. +} + +#[test] +fn test_f3() { + //~^ redundant_test_prefix + + // Has prefix, has `#[test]` attribute. Not within a `#[cfg(test)]`. + // No collision with other functions, should emit warning. +} + +#[cfg(test)] +#[test] +fn test_f4() { + //~^ redundant_test_prefix + + // Has prefix, has `#[test]` attribute, within a `#[cfg(test)]`. + // No collision with other functions, should emit warning. +} + +fn f5() {} + +#[cfg(test)] +#[test] +fn test_f5() { + //~^ redundant_test_prefix + + // Has prefix, has `#[test]` attribute, within a `#[cfg(test)]`. + // Collision with existing function. +} + +mod m1 { + pub fn f6() {} + pub fn f7() {} +} + +#[cfg(test)] +#[test] +fn test_f6() { + //~^ redundant_test_prefix + + use m1::f6; + + f6(); + // Has prefix, has `#[test]` attribute, within a `#[cfg(test)]`. + // No collision, but has a function call that will result in recursion. +} + +#[cfg(test)] +#[test] +fn test_f8() { + //~^ redundant_test_prefix + + use m1::f7; + + f7(); + // Has prefix, has `#[test]` attribute, within a `#[cfg(test)]`. + // No collision, has function call, but it will not result in recursion. +} + +// Although there's no direct call of `f` in the test, name collision still exists, +// since all `m3` functions are imported and then `map` is used to call `f`. +mod m2 { + mod m3 { + pub fn f(_: i32) -> i32 { + 0 + } + } + + use m3::*; + + #[cfg(test)] + #[test] + fn test_f() { + //~^ redundant_test_prefix + let a = Some(3); + let _ = a.map(f); + } +} + +mod m3 { + fn test_m3_1() { + // Has prefix, but no `#[test]` attribute, ignore. + } + + #[test] + fn test_m3_2() { + //~^ redundant_test_prefix + + // Has prefix, has `#[test]` attribute. Not within a `#[cfg(test)]`. + // No collision with other functions, should emit warning. + } +} + +#[cfg(test)] +mod tests { + use super::*; + + #[test] + fn test_foo() { + //~^ redundant_test_prefix + } + + #[test] + fn test_foo_with_call() { + //~^ redundant_test_prefix + + main(); + } + + #[test] + fn test_f1() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f2() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f3() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f4() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f5() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f6() { + //~^ redundant_test_prefix + } + + #[test] + fn test_1() { + //~^ redundant_test_prefix + + // `1` is invalid function name, so suggestion to rename is emitted + } + + #[test] + fn test_const() { + //~^ redundant_test_prefix + + // `const` is reserved keyword, so suggestion to rename is emitted + } + + #[test] + fn test_async() { + //~^ redundant_test_prefix + + // `async` is reserved keyword, so suggestion to rename is emitted + } + + #[test] + fn test_yield() { + //~^ redundant_test_prefix + + // `yield` is reserved keyword for future use, so suggestion to rename is emitted + } + + #[test] + fn test_() { + //~^ redundant_test_prefix + + // `` is invalid function name, so suggestion to rename is emitted + } +} + +mod tests_no_annotations { + use super::*; + + #[test] + fn test_foo() { + //~^ redundant_test_prefix + } + + #[test] + fn test_foo_with_call() { + //~^ redundant_test_prefix + + main(); + } + + #[test] + fn test_f1() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f2() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f3() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f4() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f5() { + //~^ redundant_test_prefix + } + + #[test] + fn test_f6() { + //~^ redundant_test_prefix + } + + #[test] + fn test_1() { + //~^ redundant_test_prefix + + // `1` is invalid function name, so suggestion to rename is emitted + } + + #[test] + fn test_const() { + //~^ redundant_test_prefix + + // `const` is reserved keyword, so suggestion to rename is emitted + } + + #[test] + fn test_async() { + //~^ redundant_test_prefix + + // `async` is reserved keyword, so suggestion to rename is emitted + } + + #[test] + fn test_yield() { + //~^ redundant_test_prefix + + // `yield` is reserved keyword for future use, so suggestion to rename is emitted + } + + #[test] + fn test_() { + //~^ redundant_test_prefix + + // `` is invalid function name, so suggestion to rename is emitted + } +} + +// This test is inspired by real test in `clippy_utils/src/sugg.rs`. +// The `is_in_test_function()` checks whether any identifier within a given node's parents is +// marked with `#[test]` attribute. Thus flagging false positives when nested functions are +// prefixed with `test_`. Therefore `is_test_function()` has been defined in `clippy_utils`, +// allowing to select only functions that are immediately marked with `#[test]` annotation. +// +// This test case ensures that for such nested functions no error is emitted. +#[test] +fn not_op() { + fn test_not(foo: bool) { + assert!(foo); + } + + // Use helper function + test_not(true); + test_not(false); +} diff --git a/tests/ui/redundant_test_prefix_noautofix.stderr b/tests/ui/redundant_test_prefix_noautofix.stderr new file mode 100644 index 0000000000000..6440faf1b3c83 --- /dev/null +++ b/tests/ui/redundant_test_prefix_noautofix.stderr @@ -0,0 +1,241 @@ +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:19:4 + | +LL | fn test_f3() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f3` + | + = note: `-D clippy::redundant-test-prefix` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::redundant_test_prefix)]` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:28:4 + | +LL | fn test_f4() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f4` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:39:4 + | +LL | fn test_f5() { + | ^^^^^^^ + | +help: consider function renaming (just removing `test_` prefix will cause a name conflict) + | +LL - fn test_f5() { +LL + fn f5_works() { + | + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:53:4 + | +LL | fn test_f6() { + | ^^^^^^^ + | +help: consider function renaming (just removing `test_` prefix will cause a name conflict) + | +LL - fn test_f6() { +LL + fn f6_works() { + | + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:65:4 + | +LL | fn test_f8() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f8` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:88:8 + | +LL | fn test_f() { + | ^^^^^^ + | +help: consider function renaming (just removing `test_` prefix will cause a name conflict) + | +LL - fn test_f() { +LL + fn f_works() { + | + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:101:8 + | +LL | fn test_m3_2() { + | ^^^^^^^^^ help: consider removing the `test_` prefix: `m3_2` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:114:8 + | +LL | fn test_foo() { + | ^^^^^^^^ help: consider removing the `test_` prefix: `foo` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:119:8 + | +LL | fn test_foo_with_call() { + | ^^^^^^^^^^^^^^^^^^ help: consider removing the `test_` prefix: `foo_with_call` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:126:8 + | +LL | fn test_f1() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f1` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:131:8 + | +LL | fn test_f2() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f2` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:136:8 + | +LL | fn test_f3() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f3` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:141:8 + | +LL | fn test_f4() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f4` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:146:8 + | +LL | fn test_f5() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f5` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:151:8 + | +LL | fn test_f6() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f6` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:156:8 + | +LL | fn test_1() { + | ^^^^^^ + | + = help: consider function renaming (just removing `test_` prefix will produce invalid function name) + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:163:8 + | +LL | fn test_const() { + | ^^^^^^^^^^ + | + = help: consider function renaming (just removing `test_` prefix will produce invalid function name) + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:170:8 + | +LL | fn test_async() { + | ^^^^^^^^^^ + | + = help: consider function renaming (just removing `test_` prefix will produce invalid function name) + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:177:8 + | +LL | fn test_yield() { + | ^^^^^^^^^^ + | + = help: consider function renaming (just removing `test_` prefix will produce invalid function name) + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:184:8 + | +LL | fn test_() { + | ^^^^^ + | + = help: consider function renaming (just removing `test_` prefix will produce invalid function name) + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:195:8 + | +LL | fn test_foo() { + | ^^^^^^^^ help: consider removing the `test_` prefix: `foo` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:200:8 + | +LL | fn test_foo_with_call() { + | ^^^^^^^^^^^^^^^^^^ help: consider removing the `test_` prefix: `foo_with_call` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:207:8 + | +LL | fn test_f1() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f1` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:212:8 + | +LL | fn test_f2() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f2` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:217:8 + | +LL | fn test_f3() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f3` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:222:8 + | +LL | fn test_f4() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f4` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:227:8 + | +LL | fn test_f5() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f5` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:232:8 + | +LL | fn test_f6() { + | ^^^^^^^ help: consider removing the `test_` prefix: `f6` + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:237:8 + | +LL | fn test_1() { + | ^^^^^^ + | + = help: consider function renaming (just removing `test_` prefix will produce invalid function name) + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:244:8 + | +LL | fn test_const() { + | ^^^^^^^^^^ + | + = help: consider function renaming (just removing `test_` prefix will produce invalid function name) + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:251:8 + | +LL | fn test_async() { + | ^^^^^^^^^^ + | + = help: consider function renaming (just removing `test_` prefix will produce invalid function name) + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:258:8 + | +LL | fn test_yield() { + | ^^^^^^^^^^ + | + = help: consider function renaming (just removing `test_` prefix will produce invalid function name) + +error: redundant `test_` prefix in test function name + --> tests/ui/redundant_test_prefix_noautofix.rs:265:8 + | +LL | fn test_() { + | ^^^^^ + | + = help: consider function renaming (just removing `test_` prefix will produce invalid function name) + +error: aborting due to 33 previous errors + diff --git a/tests/ui/ref_option/ref_option_traits.all.stderr b/tests/ui/ref_option/ref_option_traits.all.stderr index 030a9a28ec684..886bf2b034989 100644 --- a/tests/ui/ref_option/ref_option_traits.all.stderr +++ b/tests/ui/ref_option/ref_option_traits.all.stderr @@ -1,5 +1,5 @@ error: it is more idiomatic to use `Option<&T>` instead of `&Option` - --> tests/ui/ref_option/ref_option_traits.rs:10:5 + --> tests/ui/ref_option/ref_option_traits.rs:9:5 | LL | fn pub_trait_opt(&self, a: &Option>); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^----------------^^ @@ -10,7 +10,7 @@ LL | fn pub_trait_opt(&self, a: &Option>); = help: to override `-D warnings` add `#[allow(clippy::ref_option)]` error: it is more idiomatic to use `Option<&T>` instead of `&Option` - --> tests/ui/ref_option/ref_option_traits.rs:12:5 + --> tests/ui/ref_option/ref_option_traits.rs:11:5 | LL | fn pub_trait_ret(&self) -> &Option>; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^----------------^ @@ -18,7 +18,7 @@ LL | fn pub_trait_ret(&self) -> &Option>; | help: change this to: `Option<&Vec>` error: it is more idiomatic to use `Option<&T>` instead of `&Option` - --> tests/ui/ref_option/ref_option_traits.rs:17:5 + --> tests/ui/ref_option/ref_option_traits.rs:16:5 | LL | fn trait_opt(&self, a: &Option); | ^^^^^^^^^^^^^^^^^^^^^^^---------------^^ @@ -26,7 +26,7 @@ LL | fn trait_opt(&self, a: &Option); | help: change this to: `Option<&String>` error: it is more idiomatic to use `Option<&T>` instead of `&Option` - --> tests/ui/ref_option/ref_option_traits.rs:19:5 + --> tests/ui/ref_option/ref_option_traits.rs:18:5 | LL | fn trait_ret(&self) -> &Option; | ^^^^^^^^^^^^^^^^^^^^^^^---------------^ diff --git a/tests/ui/ref_option/ref_option_traits.private.stderr b/tests/ui/ref_option/ref_option_traits.private.stderr index 2837ee80fb2ef..cfab7fa5734c3 100644 --- a/tests/ui/ref_option/ref_option_traits.private.stderr +++ b/tests/ui/ref_option/ref_option_traits.private.stderr @@ -1,5 +1,5 @@ error: it is more idiomatic to use `Option<&T>` instead of `&Option` - --> tests/ui/ref_option/ref_option_traits.rs:17:5 + --> tests/ui/ref_option/ref_option_traits.rs:16:5 | LL | fn trait_opt(&self, a: &Option); | ^^^^^^^^^^^^^^^^^^^^^^^---------------^^ @@ -10,7 +10,7 @@ LL | fn trait_opt(&self, a: &Option); = help: to override `-D warnings` add `#[allow(clippy::ref_option)]` error: it is more idiomatic to use `Option<&T>` instead of `&Option` - --> tests/ui/ref_option/ref_option_traits.rs:19:5 + --> tests/ui/ref_option/ref_option_traits.rs:18:5 | LL | fn trait_ret(&self) -> &Option; | ^^^^^^^^^^^^^^^^^^^^^^^---------------^ diff --git a/tests/ui/ref_option/ref_option_traits.rs b/tests/ui/ref_option/ref_option_traits.rs index 811da2eb4d500..4c773e84f8da8 100644 --- a/tests/ui/ref_option/ref_option_traits.rs +++ b/tests/ui/ref_option/ref_option_traits.rs @@ -3,7 +3,6 @@ //@[private] rustc-env:CLIPPY_CONF_DIR=tests/ui/ref_option/private //@[all] rustc-env:CLIPPY_CONF_DIR=tests/ui/ref_option/all -#![allow(unused, clippy::all)] #![warn(clippy::ref_option)] pub trait PubTrait { diff --git a/tests/ui/rename.fixed b/tests/ui/rename.fixed index 7964047069689..acf7914d25365 100644 --- a/tests/ui/rename.fixed +++ b/tests/ui/rename.fixed @@ -13,8 +13,9 @@ #![allow(clippy::disallowed_methods)] #![allow(clippy::disallowed_types)] #![allow(clippy::mixed_read_write_in_expression)] -#![allow(clippy::manual_filter_map)] #![allow(clippy::manual_find_map)] +#![allow(clippy::manual_filter_map)] +#![allow(unpredictable_function_pointer_comparisons)] #![allow(clippy::useless_conversion)] #![allow(clippy::redundant_pattern_matching)] #![allow(clippy::match_result_ok)] @@ -29,7 +30,6 @@ #![allow(clippy::unwrap_used)] #![allow(clippy::panicking_overflow_checks)] #![allow(clippy::needless_borrow)] -#![allow(clippy::reversed_empty_ranges)] #![allow(clippy::single_char_add_str)] #![allow(clippy::module_name_repetitions)] #![allow(clippy::missing_const_for_thread_local)] @@ -39,11 +39,11 @@ #![allow(invalid_reference_casting)] #![allow(suspicious_double_ref_op)] #![allow(invalid_nan_comparisons)] +#![allow(invalid_null_arguments)] #![allow(double_negations)] #![allow(drop_bounds)] #![allow(dropping_copy_types)] #![allow(dropping_references)] -#![allow(unpredictable_function_pointer_comparisons)] #![allow(useless_ptr_null_checks)] #![allow(for_loops_over_fallibles)] #![allow(forgetting_copy_types)] @@ -62,6 +62,7 @@ #![allow(unknown_lints)] #![allow(unused_labels)] #![allow(ambiguous_wide_pointer_comparisons)] +#![allow(clippy::reversed_empty_ranges)] #![warn(clippy::almost_complete_range)] //~ ERROR: lint `clippy::almost_complete_letter_range` #![warn(clippy::disallowed_names)] //~ ERROR: lint `clippy::blacklisted_name` #![warn(clippy::blocks_in_conditions)] //~ ERROR: lint `clippy::block_in_if_condition_expr` @@ -74,8 +75,9 @@ #![warn(clippy::disallowed_methods)] //~ ERROR: lint `clippy::disallowed_method` #![warn(clippy::disallowed_types)] //~ ERROR: lint `clippy::disallowed_type` #![warn(clippy::mixed_read_write_in_expression)] //~ ERROR: lint `clippy::eval_order_dependence` -#![warn(clippy::manual_filter_map)] //~ ERROR: lint `clippy::filter_map` #![warn(clippy::manual_find_map)] //~ ERROR: lint `clippy::find_map` +#![warn(clippy::manual_filter_map)] //~ ERROR: lint `clippy::filter_map` +#![warn(unpredictable_function_pointer_comparisons)] //~ ERROR: lint `clippy::fn_address_comparisons` #![warn(clippy::useless_conversion)] //~ ERROR: lint `clippy::identity_conversion` #![warn(clippy::redundant_pattern_matching)] //~ ERROR: lint `clippy::if_let_redundant_pattern_matching` #![warn(clippy::match_result_ok)] //~ ERROR: lint `clippy::if_let_some_result` @@ -94,7 +96,6 @@ #![warn(clippy::expect_used)] //~ ERROR: lint `clippy::result_expect_used` #![warn(clippy::map_unwrap_or)] //~ ERROR: lint `clippy::result_map_unwrap_or_else` #![warn(clippy::unwrap_used)] //~ ERROR: lint `clippy::result_unwrap_used` -#![warn(clippy::reversed_empty_ranges)] //~ ERROR: lint `clippy::reverse_range_loop` #![warn(clippy::single_char_add_str)] //~ ERROR: lint `clippy::single_char_push_str` #![warn(clippy::module_name_repetitions)] //~ ERROR: lint `clippy::stutter` #![warn(clippy::missing_const_for_thread_local)] //~ ERROR: lint `clippy::thread_local_initializer_can_be_made_const` @@ -104,11 +105,11 @@ #![warn(invalid_reference_casting)] //~ ERROR: lint `clippy::cast_ref_to_mut` #![warn(suspicious_double_ref_op)] //~ ERROR: lint `clippy::clone_double_ref` #![warn(invalid_nan_comparisons)] //~ ERROR: lint `clippy::cmp_nan` +#![warn(invalid_null_arguments)] //~ ERROR: lint `clippy::invalid_null_ptr_usage` #![warn(double_negations)] //~ ERROR: lint `clippy::double_neg` #![warn(drop_bounds)] //~ ERROR: lint `clippy::drop_bounds` #![warn(dropping_copy_types)] //~ ERROR: lint `clippy::drop_copy` #![warn(dropping_references)] //~ ERROR: lint `clippy::drop_ref` -#![warn(unpredictable_function_pointer_comparisons)] //~ ERROR: lint `clippy::fn_address_comparisons` #![warn(useless_ptr_null_checks)] //~ ERROR: lint `clippy::fn_null_check` #![warn(for_loops_over_fallibles)] //~ ERROR: lint `clippy::for_loop_over_option` #![warn(for_loops_over_fallibles)] //~ ERROR: lint `clippy::for_loop_over_result` @@ -119,7 +120,6 @@ #![warn(invalid_atomic_ordering)] //~ ERROR: lint `clippy::invalid_atomic_ordering` #![warn(invalid_value)] //~ ERROR: lint `clippy::invalid_ref` #![warn(invalid_from_utf8_unchecked)] //~ ERROR: lint `clippy::invalid_utf8_in_unchecked` -#![warn(invalid_null_arguments)] //~ ERROR: lint `clippy::invalid_null_ptr_usage` #![warn(let_underscore_drop)] //~ ERROR: lint `clippy::let_underscore_drop` #![warn(unexpected_cfgs)] //~ ERROR: lint `clippy::maybe_misused_cfg` #![warn(enum_intrinsics_non_enums)] //~ ERROR: lint `clippy::mem_discriminant_non_enum` @@ -131,5 +131,6 @@ #![warn(unknown_lints)] //~ ERROR: lint `clippy::unknown_clippy_lints` #![warn(unused_labels)] //~ ERROR: lint `clippy::unused_label` #![warn(ambiguous_wide_pointer_comparisons)] //~ ERROR: lint `clippy::vtable_address_comparisons` +#![warn(clippy::reversed_empty_ranges)] //~ ERROR: lint `clippy::reverse_range_loop` fn main() {} diff --git a/tests/ui/rename.rs b/tests/ui/rename.rs index aa7b905b4b818..32641a684a44b 100644 --- a/tests/ui/rename.rs +++ b/tests/ui/rename.rs @@ -13,8 +13,9 @@ #![allow(clippy::disallowed_methods)] #![allow(clippy::disallowed_types)] #![allow(clippy::mixed_read_write_in_expression)] -#![allow(clippy::manual_filter_map)] #![allow(clippy::manual_find_map)] +#![allow(clippy::manual_filter_map)] +#![allow(unpredictable_function_pointer_comparisons)] #![allow(clippy::useless_conversion)] #![allow(clippy::redundant_pattern_matching)] #![allow(clippy::match_result_ok)] @@ -29,7 +30,6 @@ #![allow(clippy::unwrap_used)] #![allow(clippy::panicking_overflow_checks)] #![allow(clippy::needless_borrow)] -#![allow(clippy::reversed_empty_ranges)] #![allow(clippy::single_char_add_str)] #![allow(clippy::module_name_repetitions)] #![allow(clippy::missing_const_for_thread_local)] @@ -39,11 +39,11 @@ #![allow(invalid_reference_casting)] #![allow(suspicious_double_ref_op)] #![allow(invalid_nan_comparisons)] +#![allow(invalid_null_arguments)] #![allow(double_negations)] #![allow(drop_bounds)] #![allow(dropping_copy_types)] #![allow(dropping_references)] -#![allow(unpredictable_function_pointer_comparisons)] #![allow(useless_ptr_null_checks)] #![allow(for_loops_over_fallibles)] #![allow(forgetting_copy_types)] @@ -62,6 +62,7 @@ #![allow(unknown_lints)] #![allow(unused_labels)] #![allow(ambiguous_wide_pointer_comparisons)] +#![allow(clippy::reversed_empty_ranges)] #![warn(clippy::almost_complete_letter_range)] //~ ERROR: lint `clippy::almost_complete_letter_range` #![warn(clippy::blacklisted_name)] //~ ERROR: lint `clippy::blacklisted_name` #![warn(clippy::block_in_if_condition_expr)] //~ ERROR: lint `clippy::block_in_if_condition_expr` @@ -74,8 +75,9 @@ #![warn(clippy::disallowed_method)] //~ ERROR: lint `clippy::disallowed_method` #![warn(clippy::disallowed_type)] //~ ERROR: lint `clippy::disallowed_type` #![warn(clippy::eval_order_dependence)] //~ ERROR: lint `clippy::eval_order_dependence` -#![warn(clippy::filter_map)] //~ ERROR: lint `clippy::filter_map` #![warn(clippy::find_map)] //~ ERROR: lint `clippy::find_map` +#![warn(clippy::filter_map)] //~ ERROR: lint `clippy::filter_map` +#![warn(clippy::fn_address_comparisons)] //~ ERROR: lint `clippy::fn_address_comparisons` #![warn(clippy::identity_conversion)] //~ ERROR: lint `clippy::identity_conversion` #![warn(clippy::if_let_redundant_pattern_matching)] //~ ERROR: lint `clippy::if_let_redundant_pattern_matching` #![warn(clippy::if_let_some_result)] //~ ERROR: lint `clippy::if_let_some_result` @@ -94,7 +96,6 @@ #![warn(clippy::result_expect_used)] //~ ERROR: lint `clippy::result_expect_used` #![warn(clippy::result_map_unwrap_or_else)] //~ ERROR: lint `clippy::result_map_unwrap_or_else` #![warn(clippy::result_unwrap_used)] //~ ERROR: lint `clippy::result_unwrap_used` -#![warn(clippy::reverse_range_loop)] //~ ERROR: lint `clippy::reverse_range_loop` #![warn(clippy::single_char_push_str)] //~ ERROR: lint `clippy::single_char_push_str` #![warn(clippy::stutter)] //~ ERROR: lint `clippy::stutter` #![warn(clippy::thread_local_initializer_can_be_made_const)] //~ ERROR: lint `clippy::thread_local_initializer_can_be_made_const` @@ -104,11 +105,11 @@ #![warn(clippy::cast_ref_to_mut)] //~ ERROR: lint `clippy::cast_ref_to_mut` #![warn(clippy::clone_double_ref)] //~ ERROR: lint `clippy::clone_double_ref` #![warn(clippy::cmp_nan)] //~ ERROR: lint `clippy::cmp_nan` +#![warn(clippy::invalid_null_ptr_usage)] //~ ERROR: lint `clippy::invalid_null_ptr_usage` #![warn(clippy::double_neg)] //~ ERROR: lint `clippy::double_neg` #![warn(clippy::drop_bounds)] //~ ERROR: lint `clippy::drop_bounds` #![warn(clippy::drop_copy)] //~ ERROR: lint `clippy::drop_copy` #![warn(clippy::drop_ref)] //~ ERROR: lint `clippy::drop_ref` -#![warn(clippy::fn_address_comparisons)] //~ ERROR: lint `clippy::fn_address_comparisons` #![warn(clippy::fn_null_check)] //~ ERROR: lint `clippy::fn_null_check` #![warn(clippy::for_loop_over_option)] //~ ERROR: lint `clippy::for_loop_over_option` #![warn(clippy::for_loop_over_result)] //~ ERROR: lint `clippy::for_loop_over_result` @@ -119,7 +120,6 @@ #![warn(clippy::invalid_atomic_ordering)] //~ ERROR: lint `clippy::invalid_atomic_ordering` #![warn(clippy::invalid_ref)] //~ ERROR: lint `clippy::invalid_ref` #![warn(clippy::invalid_utf8_in_unchecked)] //~ ERROR: lint `clippy::invalid_utf8_in_unchecked` -#![warn(clippy::invalid_null_ptr_usage)] //~ ERROR: lint `clippy::invalid_null_ptr_usage` #![warn(clippy::let_underscore_drop)] //~ ERROR: lint `clippy::let_underscore_drop` #![warn(clippy::maybe_misused_cfg)] //~ ERROR: lint `clippy::maybe_misused_cfg` #![warn(clippy::mem_discriminant_non_enum)] //~ ERROR: lint `clippy::mem_discriminant_non_enum` @@ -131,5 +131,6 @@ #![warn(clippy::unknown_clippy_lints)] //~ ERROR: lint `clippy::unknown_clippy_lints` #![warn(clippy::unused_label)] //~ ERROR: lint `clippy::unused_label` #![warn(clippy::vtable_address_comparisons)] //~ ERROR: lint `clippy::vtable_address_comparisons` +#![warn(clippy::reverse_range_loop)] //~ ERROR: lint `clippy::reverse_range_loop` fn main() {} diff --git a/tests/ui/rename.stderr b/tests/ui/rename.stderr index b3c88167c1115..e9d2debff91a3 100644 --- a/tests/ui/rename.stderr +++ b/tests/ui/rename.stderr @@ -1,5 +1,5 @@ error: lint `clippy::almost_complete_letter_range` has been renamed to `clippy::almost_complete_range` - --> tests/ui/rename.rs:65:9 + --> tests/ui/rename.rs:66:9 | LL | #![warn(clippy::almost_complete_letter_range)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::almost_complete_range` @@ -8,347 +8,341 @@ LL | #![warn(clippy::almost_complete_letter_range)] = help: to override `-D warnings` add `#[allow(renamed_and_removed_lints)]` error: lint `clippy::blacklisted_name` has been renamed to `clippy::disallowed_names` - --> tests/ui/rename.rs:66:9 + --> tests/ui/rename.rs:67:9 | LL | #![warn(clippy::blacklisted_name)] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::disallowed_names` error: lint `clippy::block_in_if_condition_expr` has been renamed to `clippy::blocks_in_conditions` - --> tests/ui/rename.rs:67:9 + --> tests/ui/rename.rs:68:9 | LL | #![warn(clippy::block_in_if_condition_expr)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::blocks_in_conditions` error: lint `clippy::block_in_if_condition_stmt` has been renamed to `clippy::blocks_in_conditions` - --> tests/ui/rename.rs:68:9 + --> tests/ui/rename.rs:69:9 | LL | #![warn(clippy::block_in_if_condition_stmt)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::blocks_in_conditions` error: lint `clippy::blocks_in_if_conditions` has been renamed to `clippy::blocks_in_conditions` - --> tests/ui/rename.rs:69:9 + --> tests/ui/rename.rs:70:9 | LL | #![warn(clippy::blocks_in_if_conditions)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::blocks_in_conditions` error: lint `clippy::box_vec` has been renamed to `clippy::box_collection` - --> tests/ui/rename.rs:70:9 + --> tests/ui/rename.rs:71:9 | LL | #![warn(clippy::box_vec)] | ^^^^^^^^^^^^^^^ help: use the new name: `clippy::box_collection` error: lint `clippy::const_static_lifetime` has been renamed to `clippy::redundant_static_lifetimes` - --> tests/ui/rename.rs:71:9 + --> tests/ui/rename.rs:72:9 | LL | #![warn(clippy::const_static_lifetime)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::redundant_static_lifetimes` error: lint `clippy::cyclomatic_complexity` has been renamed to `clippy::cognitive_complexity` - --> tests/ui/rename.rs:72:9 + --> tests/ui/rename.rs:73:9 | LL | #![warn(clippy::cyclomatic_complexity)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::cognitive_complexity` error: lint `clippy::derive_hash_xor_eq` has been renamed to `clippy::derived_hash_with_manual_eq` - --> tests/ui/rename.rs:73:9 + --> tests/ui/rename.rs:74:9 | LL | #![warn(clippy::derive_hash_xor_eq)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::derived_hash_with_manual_eq` error: lint `clippy::disallowed_method` has been renamed to `clippy::disallowed_methods` - --> tests/ui/rename.rs:74:9 + --> tests/ui/rename.rs:75:9 | LL | #![warn(clippy::disallowed_method)] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::disallowed_methods` error: lint `clippy::disallowed_type` has been renamed to `clippy::disallowed_types` - --> tests/ui/rename.rs:75:9 + --> tests/ui/rename.rs:76:9 | LL | #![warn(clippy::disallowed_type)] | ^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::disallowed_types` error: lint `clippy::eval_order_dependence` has been renamed to `clippy::mixed_read_write_in_expression` - --> tests/ui/rename.rs:76:9 + --> tests/ui/rename.rs:77:9 | LL | #![warn(clippy::eval_order_dependence)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::mixed_read_write_in_expression` +error: lint `clippy::find_map` has been renamed to `clippy::manual_find_map` + --> tests/ui/rename.rs:78:9 + | +LL | #![warn(clippy::find_map)] + | ^^^^^^^^^^^^^^^^ help: use the new name: `clippy::manual_find_map` + error: lint `clippy::filter_map` has been renamed to `clippy::manual_filter_map` - --> tests/ui/rename.rs:77:9 + --> tests/ui/rename.rs:79:9 | LL | #![warn(clippy::filter_map)] | ^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::manual_filter_map` -error: lint `clippy::find_map` has been renamed to `clippy::manual_find_map` - --> tests/ui/rename.rs:78:9 +error: lint `clippy::fn_address_comparisons` has been renamed to `unpredictable_function_pointer_comparisons` + --> tests/ui/rename.rs:80:9 | -LL | #![warn(clippy::find_map)] - | ^^^^^^^^^^^^^^^^ help: use the new name: `clippy::manual_find_map` +LL | #![warn(clippy::fn_address_comparisons)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `unpredictable_function_pointer_comparisons` error: lint `clippy::identity_conversion` has been renamed to `clippy::useless_conversion` - --> tests/ui/rename.rs:79:9 + --> tests/ui/rename.rs:81:9 | LL | #![warn(clippy::identity_conversion)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::useless_conversion` error: lint `clippy::if_let_redundant_pattern_matching` has been renamed to `clippy::redundant_pattern_matching` - --> tests/ui/rename.rs:80:9 + --> tests/ui/rename.rs:82:9 | LL | #![warn(clippy::if_let_redundant_pattern_matching)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::redundant_pattern_matching` error: lint `clippy::if_let_some_result` has been renamed to `clippy::match_result_ok` - --> tests/ui/rename.rs:81:9 + --> tests/ui/rename.rs:83:9 | LL | #![warn(clippy::if_let_some_result)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::match_result_ok` error: lint `clippy::incorrect_clone_impl_on_copy_type` has been renamed to `clippy::non_canonical_clone_impl` - --> tests/ui/rename.rs:82:9 + --> tests/ui/rename.rs:84:9 | LL | #![warn(clippy::incorrect_clone_impl_on_copy_type)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::non_canonical_clone_impl` error: lint `clippy::incorrect_partial_ord_impl_on_ord_type` has been renamed to `clippy::non_canonical_partial_ord_impl` - --> tests/ui/rename.rs:83:9 + --> tests/ui/rename.rs:85:9 | LL | #![warn(clippy::incorrect_partial_ord_impl_on_ord_type)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::non_canonical_partial_ord_impl` error: lint `clippy::integer_arithmetic` has been renamed to `clippy::arithmetic_side_effects` - --> tests/ui/rename.rs:84:9 + --> tests/ui/rename.rs:86:9 | LL | #![warn(clippy::integer_arithmetic)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::arithmetic_side_effects` error: lint `clippy::logic_bug` has been renamed to `clippy::overly_complex_bool_expr` - --> tests/ui/rename.rs:85:9 + --> tests/ui/rename.rs:87:9 | LL | #![warn(clippy::logic_bug)] | ^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::overly_complex_bool_expr` error: lint `clippy::new_without_default_derive` has been renamed to `clippy::new_without_default` - --> tests/ui/rename.rs:86:9 + --> tests/ui/rename.rs:88:9 | LL | #![warn(clippy::new_without_default_derive)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::new_without_default` error: lint `clippy::option_and_then_some` has been renamed to `clippy::bind_instead_of_map` - --> tests/ui/rename.rs:87:9 + --> tests/ui/rename.rs:89:9 | LL | #![warn(clippy::option_and_then_some)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::bind_instead_of_map` error: lint `clippy::option_expect_used` has been renamed to `clippy::expect_used` - --> tests/ui/rename.rs:88:9 + --> tests/ui/rename.rs:90:9 | LL | #![warn(clippy::option_expect_used)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::expect_used` error: lint `clippy::option_map_unwrap_or` has been renamed to `clippy::map_unwrap_or` - --> tests/ui/rename.rs:89:9 + --> tests/ui/rename.rs:91:9 | LL | #![warn(clippy::option_map_unwrap_or)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::map_unwrap_or` error: lint `clippy::option_map_unwrap_or_else` has been renamed to `clippy::map_unwrap_or` - --> tests/ui/rename.rs:90:9 + --> tests/ui/rename.rs:92:9 | LL | #![warn(clippy::option_map_unwrap_or_else)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::map_unwrap_or` error: lint `clippy::option_unwrap_used` has been renamed to `clippy::unwrap_used` - --> tests/ui/rename.rs:91:9 + --> tests/ui/rename.rs:93:9 | LL | #![warn(clippy::option_unwrap_used)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::unwrap_used` error: lint `clippy::overflow_check_conditional` has been renamed to `clippy::panicking_overflow_checks` - --> tests/ui/rename.rs:92:9 + --> tests/ui/rename.rs:94:9 | LL | #![warn(clippy::overflow_check_conditional)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::panicking_overflow_checks` error: lint `clippy::ref_in_deref` has been renamed to `clippy::needless_borrow` - --> tests/ui/rename.rs:93:9 + --> tests/ui/rename.rs:95:9 | LL | #![warn(clippy::ref_in_deref)] | ^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::needless_borrow` error: lint `clippy::result_expect_used` has been renamed to `clippy::expect_used` - --> tests/ui/rename.rs:94:9 + --> tests/ui/rename.rs:96:9 | LL | #![warn(clippy::result_expect_used)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::expect_used` error: lint `clippy::result_map_unwrap_or_else` has been renamed to `clippy::map_unwrap_or` - --> tests/ui/rename.rs:95:9 + --> tests/ui/rename.rs:97:9 | LL | #![warn(clippy::result_map_unwrap_or_else)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::map_unwrap_or` error: lint `clippy::result_unwrap_used` has been renamed to `clippy::unwrap_used` - --> tests/ui/rename.rs:96:9 + --> tests/ui/rename.rs:98:9 | LL | #![warn(clippy::result_unwrap_used)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::unwrap_used` -error: lint `clippy::reverse_range_loop` has been renamed to `clippy::reversed_empty_ranges` - --> tests/ui/rename.rs:97:9 - | -LL | #![warn(clippy::reverse_range_loop)] - | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::reversed_empty_ranges` - error: lint `clippy::single_char_push_str` has been renamed to `clippy::single_char_add_str` - --> tests/ui/rename.rs:98:9 + --> tests/ui/rename.rs:99:9 | LL | #![warn(clippy::single_char_push_str)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::single_char_add_str` error: lint `clippy::stutter` has been renamed to `clippy::module_name_repetitions` - --> tests/ui/rename.rs:99:9 + --> tests/ui/rename.rs:100:9 | LL | #![warn(clippy::stutter)] | ^^^^^^^^^^^^^^^ help: use the new name: `clippy::module_name_repetitions` error: lint `clippy::thread_local_initializer_can_be_made_const` has been renamed to `clippy::missing_const_for_thread_local` - --> tests/ui/rename.rs:100:9 + --> tests/ui/rename.rs:101:9 | LL | #![warn(clippy::thread_local_initializer_can_be_made_const)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::missing_const_for_thread_local` error: lint `clippy::to_string_in_display` has been renamed to `clippy::recursive_format_impl` - --> tests/ui/rename.rs:101:9 + --> tests/ui/rename.rs:102:9 | LL | #![warn(clippy::to_string_in_display)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::recursive_format_impl` error: lint `clippy::unwrap_or_else_default` has been renamed to `clippy::unwrap_or_default` - --> tests/ui/rename.rs:102:9 + --> tests/ui/rename.rs:103:9 | LL | #![warn(clippy::unwrap_or_else_default)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::unwrap_or_default` error: lint `clippy::zero_width_space` has been renamed to `clippy::invisible_characters` - --> tests/ui/rename.rs:103:9 + --> tests/ui/rename.rs:104:9 | LL | #![warn(clippy::zero_width_space)] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::invisible_characters` error: lint `clippy::cast_ref_to_mut` has been renamed to `invalid_reference_casting` - --> tests/ui/rename.rs:104:9 + --> tests/ui/rename.rs:105:9 | LL | #![warn(clippy::cast_ref_to_mut)] | ^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_reference_casting` error: lint `clippy::clone_double_ref` has been renamed to `suspicious_double_ref_op` - --> tests/ui/rename.rs:105:9 + --> tests/ui/rename.rs:106:9 | LL | #![warn(clippy::clone_double_ref)] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `suspicious_double_ref_op` error: lint `clippy::cmp_nan` has been renamed to `invalid_nan_comparisons` - --> tests/ui/rename.rs:106:9 + --> tests/ui/rename.rs:107:9 | LL | #![warn(clippy::cmp_nan)] | ^^^^^^^^^^^^^^^ help: use the new name: `invalid_nan_comparisons` +error: lint `clippy::invalid_null_ptr_usage` has been renamed to `invalid_null_arguments` + --> tests/ui/rename.rs:108:9 + | +LL | #![warn(clippy::invalid_null_ptr_usage)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_null_arguments` + error: lint `clippy::double_neg` has been renamed to `double_negations` - --> tests/ui/rename.rs:107:9 + --> tests/ui/rename.rs:109:9 | LL | #![warn(clippy::double_neg)] | ^^^^^^^^^^^^^^^^^^ help: use the new name: `double_negations` error: lint `clippy::drop_bounds` has been renamed to `drop_bounds` - --> tests/ui/rename.rs:108:9 + --> tests/ui/rename.rs:110:9 | LL | #![warn(clippy::drop_bounds)] | ^^^^^^^^^^^^^^^^^^^ help: use the new name: `drop_bounds` error: lint `clippy::drop_copy` has been renamed to `dropping_copy_types` - --> tests/ui/rename.rs:109:9 + --> tests/ui/rename.rs:111:9 | LL | #![warn(clippy::drop_copy)] | ^^^^^^^^^^^^^^^^^ help: use the new name: `dropping_copy_types` error: lint `clippy::drop_ref` has been renamed to `dropping_references` - --> tests/ui/rename.rs:110:9 + --> tests/ui/rename.rs:112:9 | LL | #![warn(clippy::drop_ref)] | ^^^^^^^^^^^^^^^^ help: use the new name: `dropping_references` -error: lint `clippy::fn_address_comparisons` has been renamed to `unpredictable_function_pointer_comparisons` - --> tests/ui/rename.rs:111:9 - | -LL | #![warn(clippy::fn_address_comparisons)] - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `unpredictable_function_pointer_comparisons` - error: lint `clippy::fn_null_check` has been renamed to `useless_ptr_null_checks` - --> tests/ui/rename.rs:112:9 + --> tests/ui/rename.rs:113:9 | LL | #![warn(clippy::fn_null_check)] | ^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `useless_ptr_null_checks` error: lint `clippy::for_loop_over_option` has been renamed to `for_loops_over_fallibles` - --> tests/ui/rename.rs:113:9 + --> tests/ui/rename.rs:114:9 | LL | #![warn(clippy::for_loop_over_option)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `for_loops_over_fallibles` error: lint `clippy::for_loop_over_result` has been renamed to `for_loops_over_fallibles` - --> tests/ui/rename.rs:114:9 + --> tests/ui/rename.rs:115:9 | LL | #![warn(clippy::for_loop_over_result)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `for_loops_over_fallibles` error: lint `clippy::for_loops_over_fallibles` has been renamed to `for_loops_over_fallibles` - --> tests/ui/rename.rs:115:9 + --> tests/ui/rename.rs:116:9 | LL | #![warn(clippy::for_loops_over_fallibles)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `for_loops_over_fallibles` error: lint `clippy::forget_copy` has been renamed to `forgetting_copy_types` - --> tests/ui/rename.rs:116:9 + --> tests/ui/rename.rs:117:9 | LL | #![warn(clippy::forget_copy)] | ^^^^^^^^^^^^^^^^^^^ help: use the new name: `forgetting_copy_types` error: lint `clippy::forget_ref` has been renamed to `forgetting_references` - --> tests/ui/rename.rs:117:9 + --> tests/ui/rename.rs:118:9 | LL | #![warn(clippy::forget_ref)] | ^^^^^^^^^^^^^^^^^^ help: use the new name: `forgetting_references` error: lint `clippy::into_iter_on_array` has been renamed to `array_into_iter` - --> tests/ui/rename.rs:118:9 + --> tests/ui/rename.rs:119:9 | LL | #![warn(clippy::into_iter_on_array)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `array_into_iter` error: lint `clippy::invalid_atomic_ordering` has been renamed to `invalid_atomic_ordering` - --> tests/ui/rename.rs:119:9 + --> tests/ui/rename.rs:120:9 | LL | #![warn(clippy::invalid_atomic_ordering)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_atomic_ordering` error: lint `clippy::invalid_ref` has been renamed to `invalid_value` - --> tests/ui/rename.rs:120:9 + --> tests/ui/rename.rs:121:9 | LL | #![warn(clippy::invalid_ref)] | ^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_value` error: lint `clippy::invalid_utf8_in_unchecked` has been renamed to `invalid_from_utf8_unchecked` - --> tests/ui/rename.rs:121:9 + --> tests/ui/rename.rs:122:9 | LL | #![warn(clippy::invalid_utf8_in_unchecked)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_from_utf8_unchecked` -error: lint `clippy::invalid_null_ptr_usage` has been renamed to `invalid_null_arguments` - --> tests/ui/rename.rs:122:9 - | -LL | #![warn(clippy::invalid_null_ptr_usage)] - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_null_arguments` - error: lint `clippy::let_underscore_drop` has been renamed to `let_underscore_drop` --> tests/ui/rename.rs:123:9 | @@ -415,5 +409,11 @@ error: lint `clippy::vtable_address_comparisons` has been renamed to `ambiguous_ LL | #![warn(clippy::vtable_address_comparisons)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `ambiguous_wide_pointer_comparisons` +error: lint `clippy::reverse_range_loop` has been renamed to `clippy::reversed_empty_ranges` + --> tests/ui/rename.rs:134:9 + | +LL | #![warn(clippy::reverse_range_loop)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::reversed_empty_ranges` + error: aborting due to 69 previous errors diff --git a/tests/ui/repr_packed_without_abi.stderr b/tests/ui/repr_packed_without_abi.stderr index d1078b3e8e48e..f688e4bc744ae 100644 --- a/tests/ui/repr_packed_without_abi.stderr +++ b/tests/ui/repr_packed_without_abi.stderr @@ -11,7 +11,7 @@ LL | | } | |_^ | = warning: unqualified `#[repr(packed)]` defaults to `#[repr(Rust, packed)]`, which has no stable ABI - = help: qualify the desired ABI explicity via `#[repr(C, packed)]` or `#[repr(Rust, packed)]` + = help: qualify the desired ABI explicitly via `#[repr(C, packed)]` or `#[repr(Rust, packed)]` note: the lint level is defined here --> tests/ui/repr_packed_without_abi.rs:1:9 | @@ -31,7 +31,7 @@ LL | | } | |_^ | = warning: unqualified `#[repr(packed)]` defaults to `#[repr(Rust, packed)]`, which has no stable ABI - = help: qualify the desired ABI explicity via `#[repr(C, packed)]` or `#[repr(Rust, packed)]` + = help: qualify the desired ABI explicitly via `#[repr(C, packed)]` or `#[repr(Rust, packed)]` error: aborting due to 2 previous errors diff --git a/tests/ui/result_unit_error_no_std.rs b/tests/ui/result_unit_error_no_std.rs index 8a1849b8490ab..a64e8414d78fe 100644 --- a/tests/ui/result_unit_error_no_std.rs +++ b/tests/ui/result_unit_error_no_std.rs @@ -14,7 +14,7 @@ pub fn returns_unit_error_lint() -> Result { Err(()) } -#[no_mangle] +#[unsafe(no_mangle)] extern "C" fn main(_argc: core::ffi::c_int, _argv: *const *const u8) -> core::ffi::c_int { 0 } diff --git a/tests/ui/search_is_some_fixable_none.fixed b/tests/ui/search_is_some_fixable_none.fixed index 847e5140d3e65..cc4dbc919d81d 100644 --- a/tests/ui/search_is_some_fixable_none.fixed +++ b/tests/ui/search_is_some_fixable_none.fixed @@ -214,10 +214,9 @@ mod issue7392 { } fn ref_bindings() { - let _ = ![&(&1, 2), &(&3, 4), &(&5, 4)].iter().any(|(&x, y)| x == *y); - //~^ search_is_some - let _ = ![&(&1, 2), &(&3, 4), &(&5, 4)].iter().any(|(&x, y)| x == *y); - //~^ search_is_some + let _ = ![&(&1, 2), &(&3, 4), &(&5, 4)] + //~^ search_is_some + .iter().any(|&&(&x, ref y)| x == *y); } fn test_string_1(s: &str) -> bool { diff --git a/tests/ui/search_is_some_fixable_none.rs b/tests/ui/search_is_some_fixable_none.rs index e976d12600cc1..fa31a9ddedc66 100644 --- a/tests/ui/search_is_some_fixable_none.rs +++ b/tests/ui/search_is_some_fixable_none.rs @@ -221,10 +221,11 @@ mod issue7392 { } fn ref_bindings() { - let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().find(|(&x, y)| x == *y).is_none(); - //~^ search_is_some - let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().find(|&(&x, y)| x == *y).is_none(); - //~^ search_is_some + let _ = [&(&1, 2), &(&3, 4), &(&5, 4)] + //~^ search_is_some + .iter() + .find(|&&&(&x, ref y)| x == *y) + .is_none(); } fn test_string_1(s: &str) -> bool { diff --git a/tests/ui/search_is_some_fixable_none.stderr b/tests/ui/search_is_some_fixable_none.stderr index ccc17025222d9..b079cf7ea361b 100644 --- a/tests/ui/search_is_some_fixable_none.stderr +++ b/tests/ui/search_is_some_fixable_none.stderr @@ -248,116 +248,122 @@ LL | let _ = vfoo.iter().find(|v| v.by_ref(&v.bar)).is_none(); error: called `is_none()` after searching an `Iterator` with `find` --> tests/ui/search_is_some_fixable_none.rs:224:17 | -LL | let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().find(|(&x, y)| x == *y).is_none(); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `![&(&1, 2), &(&3, 4), &(&5, 4)].iter().any(|(&x, y)| x == *y)` - -error: called `is_none()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_none.rs:226:17 +LL | let _ = [&(&1, 2), &(&3, 4), &(&5, 4)] + | _________________^ +LL | | +LL | | .iter() +LL | | .find(|&&&(&x, ref y)| x == *y) +LL | | .is_none(); + | |______________________^ + | +help: consider using + | +LL ~ let _ = ![&(&1, 2), &(&3, 4), &(&5, 4)] +LL + +LL ~ .iter().any(|&&(&x, ref y)| x == *y); | -LL | let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().find(|&(&x, y)| x == *y).is_none(); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `![&(&1, 2), &(&3, 4), &(&5, 4)].iter().any(|(&x, y)| x == *y)` error: called `is_none()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_none.rs:246:17 + --> tests/ui/search_is_some_fixable_none.rs:247:17 | LL | let _ = v.iter().find(|s| s[0].is_empty()).is_none(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `!v.iter().any(|s| s[0].is_empty())` error: called `is_none()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_none.rs:248:17 + --> tests/ui/search_is_some_fixable_none.rs:249:17 | LL | let _ = v.iter().find(|s| test_string_1(&s[0])).is_none(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `!v.iter().any(|s| test_string_1(&s[0]))` error: called `is_none()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_none.rs:258:17 + --> tests/ui/search_is_some_fixable_none.rs:259:17 | LL | let _ = v.iter().find(|fp| fp.field.is_power_of_two()).is_none(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `!v.iter().any(|fp| fp.field.is_power_of_two())` error: called `is_none()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_none.rs:260:17 + --> tests/ui/search_is_some_fixable_none.rs:261:17 | LL | let _ = v.iter().find(|fp| test_u32_1(fp.field)).is_none(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `!v.iter().any(|fp| test_u32_1(fp.field))` error: called `is_none()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_none.rs:262:17 + --> tests/ui/search_is_some_fixable_none.rs:263:17 | LL | let _ = v.iter().find(|fp| test_u32_2(*fp.field)).is_none(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `!v.iter().any(|fp| test_u32_2(*fp.field))` error: called `is_none()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_none.rs:279:17 + --> tests/ui/search_is_some_fixable_none.rs:280:17 | LL | let _ = v.iter().find(|x| **x == 42).is_none(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `!v.iter().any(|x| *x == 42)` error: called `is_none()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_none.rs:281:17 + --> tests/ui/search_is_some_fixable_none.rs:282:17 | LL | Foo.bar(v.iter().find(|x| **x == 42).is_none()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `!v.iter().any(|x| *x == 42)` error: called `is_none()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_none.rs:287:9 + --> tests/ui/search_is_some_fixable_none.rs:288:9 | LL | v.iter().find(|x| **x == 42).is_none().then(computations); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `(!v.iter().any(|x| *x == 42))` error: called `is_none()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_none.rs:293:9 + --> tests/ui/search_is_some_fixable_none.rs:294:9 | LL | v.iter().find(|x| **x == 42).is_none().then_some(0); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `(!v.iter().any(|x| *x == 42))` error: called `is_none()` after calling `find()` on a string - --> tests/ui/search_is_some_fixable_none.rs:299:17 + --> tests/ui/search_is_some_fixable_none.rs:300:17 | LL | let _ = s.find("world").is_none(); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `!s.contains("world")` error: called `is_none()` after calling `find()` on a string - --> tests/ui/search_is_some_fixable_none.rs:301:17 + --> tests/ui/search_is_some_fixable_none.rs:302:17 | LL | Foo.bar(s.find("world").is_none()); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `!s.contains("world")` error: called `is_none()` after calling `find()` on a string - --> tests/ui/search_is_some_fixable_none.rs:304:17 + --> tests/ui/search_is_some_fixable_none.rs:305:17 | LL | let _ = s.find("world").is_none(); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `!s.contains("world")` error: called `is_none()` after calling `find()` on a string - --> tests/ui/search_is_some_fixable_none.rs:306:17 + --> tests/ui/search_is_some_fixable_none.rs:307:17 | LL | Foo.bar(s.find("world").is_none()); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `!s.contains("world")` error: called `is_none()` after calling `find()` on a string - --> tests/ui/search_is_some_fixable_none.rs:312:17 + --> tests/ui/search_is_some_fixable_none.rs:313:17 | LL | let _ = s.find("world").is_none().then(computations); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `(!s.contains("world"))` error: called `is_none()` after calling `find()` on a string - --> tests/ui/search_is_some_fixable_none.rs:315:17 + --> tests/ui/search_is_some_fixable_none.rs:316:17 | LL | let _ = s.find("world").is_none().then(computations); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `(!s.contains("world"))` error: called `is_none()` after calling `find()` on a string - --> tests/ui/search_is_some_fixable_none.rs:321:17 + --> tests/ui/search_is_some_fixable_none.rs:322:17 | LL | let _ = s.find("world").is_none().then_some(0); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `(!s.contains("world"))` error: called `is_none()` after calling `find()` on a string - --> tests/ui/search_is_some_fixable_none.rs:324:17 + --> tests/ui/search_is_some_fixable_none.rs:325:17 | LL | let _ = s.find("world").is_none().then_some(0); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `(!s.contains("world"))` -error: aborting due to 55 previous errors +error: aborting due to 54 previous errors diff --git a/tests/ui/search_is_some_fixable_none_2021.fixed b/tests/ui/search_is_some_fixable_none_2021.fixed new file mode 100644 index 0000000000000..6e15244901c28 --- /dev/null +++ b/tests/ui/search_is_some_fixable_none_2021.fixed @@ -0,0 +1,14 @@ +//@edition: 2021 +#![warn(clippy::search_is_some)] + +fn main() { + fn ref_bindings() { + let _ = ![&(&1, 2), &(&3, 4), &(&5, 4)].iter().any(|(&x, y)| x == *y); + //~^ search_is_some + let _ = ![&(&1, 2), &(&3, 4), &(&5, 4)].iter().any(|(&x, y)| x == *y); + //~^ search_is_some + let _ = ![&(&1, 2), &(&3, 4), &(&5, 4)] + //~^ search_is_some + .iter().any(|&&(&x, ref y)| x == *y); + } +} diff --git a/tests/ui/search_is_some_fixable_none_2021.rs b/tests/ui/search_is_some_fixable_none_2021.rs new file mode 100644 index 0000000000000..4b1db3f9fc328 --- /dev/null +++ b/tests/ui/search_is_some_fixable_none_2021.rs @@ -0,0 +1,16 @@ +//@edition: 2021 +#![warn(clippy::search_is_some)] + +fn main() { + fn ref_bindings() { + let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().find(|(&x, y)| x == *y).is_none(); + //~^ search_is_some + let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().find(|&(&x, y)| x == *y).is_none(); + //~^ search_is_some + let _ = [&(&1, 2), &(&3, 4), &(&5, 4)] + //~^ search_is_some + .iter() + .find(|&&&(&x, ref y)| x == *y) + .is_none(); + } +} diff --git a/tests/ui/search_is_some_fixable_none_2021.stderr b/tests/ui/search_is_some_fixable_none_2021.stderr new file mode 100644 index 0000000000000..af93be1a70719 --- /dev/null +++ b/tests/ui/search_is_some_fixable_none_2021.stderr @@ -0,0 +1,35 @@ +error: called `is_none()` after searching an `Iterator` with `find` + --> tests/ui/search_is_some_fixable_none_2021.rs:6:17 + | +LL | let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().find(|(&x, y)| x == *y).is_none(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `![&(&1, 2), &(&3, 4), &(&5, 4)].iter().any(|(&x, y)| x == *y)` + | + = note: `-D clippy::search-is-some` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::search_is_some)]` + +error: called `is_none()` after searching an `Iterator` with `find` + --> tests/ui/search_is_some_fixable_none_2021.rs:8:17 + | +LL | let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().find(|&(&x, y)| x == *y).is_none(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `![&(&1, 2), &(&3, 4), &(&5, 4)].iter().any(|(&x, y)| x == *y)` + +error: called `is_none()` after searching an `Iterator` with `find` + --> tests/ui/search_is_some_fixable_none_2021.rs:10:17 + | +LL | let _ = [&(&1, 2), &(&3, 4), &(&5, 4)] + | _________________^ +LL | | +LL | | .iter() +LL | | .find(|&&&(&x, ref y)| x == *y) +LL | | .is_none(); + | |______________________^ + | +help: consider using + | +LL ~ let _ = ![&(&1, 2), &(&3, 4), &(&5, 4)] +LL + +LL ~ .iter().any(|&&(&x, ref y)| x == *y); + | + +error: aborting due to 3 previous errors + diff --git a/tests/ui/search_is_some_fixable_some.fixed b/tests/ui/search_is_some_fixable_some.fixed index 05e88b8528f15..42b39b33b575c 100644 --- a/tests/ui/search_is_some_fixable_some.fixed +++ b/tests/ui/search_is_some_fixable_some.fixed @@ -214,10 +214,9 @@ mod issue7392 { } fn ref_bindings() { - let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().any(|(&x, y)| x == *y); - //~^ search_is_some - let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().any(|(&x, y)| x == *y); - //~^ search_is_some + let _ = [&(&1, 2), &(&3, 4), &(&5, 4)] + .iter() + .any(|&&(&x, ref y)| x == *y); } fn test_string_1(s: &str) -> bool { diff --git a/tests/ui/search_is_some_fixable_some.rs b/tests/ui/search_is_some_fixable_some.rs index caab816f24361..ca4f4d941cb2f 100644 --- a/tests/ui/search_is_some_fixable_some.rs +++ b/tests/ui/search_is_some_fixable_some.rs @@ -220,10 +220,11 @@ mod issue7392 { } fn ref_bindings() { - let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().find(|(&x, y)| x == *y).is_some(); - //~^ search_is_some - let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().find(|&(&x, y)| x == *y).is_some(); - //~^ search_is_some + let _ = [&(&1, 2), &(&3, 4), &(&5, 4)] + .iter() + .find(|&&&(&x, ref y)| x == *y) + //~^ search_is_some + .is_some(); } fn test_string_1(s: &str) -> bool { diff --git a/tests/ui/search_is_some_fixable_some.stderr b/tests/ui/search_is_some_fixable_some.stderr index af719b78831a1..8291f48d43c4d 100644 --- a/tests/ui/search_is_some_fixable_some.stderr +++ b/tests/ui/search_is_some_fixable_some.stderr @@ -227,70 +227,67 @@ LL | let _ = vfoo.iter().find(|v| v.by_ref(&v.bar)).is_some(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `any(|v| v.by_ref(&v.bar))` error: called `is_some()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_some.rs:223:55 + --> tests/ui/search_is_some_fixable_some.rs:225:14 | -LL | let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().find(|(&x, y)| x == *y).is_some(); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `any(|(&x, y)| x == *y)` - -error: called `is_some()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_some.rs:225:55 - | -LL | let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().find(|&(&x, y)| x == *y).is_some(); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `any(|(&x, y)| x == *y)` +LL | .find(|&&&(&x, ref y)| x == *y) + | ______________^ +LL | | +LL | | .is_some(); + | |______________________^ help: consider using: `any(|&&(&x, ref y)| x == *y)` error: called `is_some()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_some.rs:245:26 + --> tests/ui/search_is_some_fixable_some.rs:246:26 | LL | let _ = v.iter().find(|s| s[0].is_empty()).is_some(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `any(|s| s[0].is_empty())` error: called `is_some()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_some.rs:247:26 + --> tests/ui/search_is_some_fixable_some.rs:248:26 | LL | let _ = v.iter().find(|s| test_string_1(&s[0])).is_some(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `any(|s| test_string_1(&s[0]))` error: called `is_some()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_some.rs:257:26 + --> tests/ui/search_is_some_fixable_some.rs:258:26 | LL | let _ = v.iter().find(|fp| fp.field.is_power_of_two()).is_some(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `any(|fp| fp.field.is_power_of_two())` error: called `is_some()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_some.rs:259:26 + --> tests/ui/search_is_some_fixable_some.rs:260:26 | LL | let _ = v.iter().find(|fp| test_u32_1(fp.field)).is_some(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `any(|fp| test_u32_1(fp.field))` error: called `is_some()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_some.rs:261:26 + --> tests/ui/search_is_some_fixable_some.rs:262:26 | LL | let _ = v.iter().find(|fp| test_u32_2(*fp.field)).is_some(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `any(|fp| test_u32_2(*fp.field))` error: called `is_some()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_some.rs:277:18 + --> tests/ui/search_is_some_fixable_some.rs:278:18 | LL | v.iter().find(|x: &&u32| func(x)).is_some() | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `any(|x: &u32| func(&x))` error: called `is_some()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_some.rs:287:26 + --> tests/ui/search_is_some_fixable_some.rs:288:26 | LL | let _ = v.iter().find(|x: &&u32| arg_no_deref_impl(x)).is_some(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `any(|x: &u32| arg_no_deref_impl(&x))` error: called `is_some()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_some.rs:291:26 + --> tests/ui/search_is_some_fixable_some.rs:292:26 | LL | let _ = v.iter().find(|x: &&u32| arg_no_deref_dyn(x)).is_some(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `any(|x: &u32| arg_no_deref_dyn(&x))` error: called `is_some()` after searching an `Iterator` with `find` - --> tests/ui/search_is_some_fixable_some.rs:295:26 + --> tests/ui/search_is_some_fixable_some.rs:296:26 | LL | let _ = v.iter().find(|x: &&u32| (*arg_no_deref_dyn)(x)).is_some(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `any(|x: &u32| (*arg_no_deref_dyn)(&x))` -error: aborting due to 47 previous errors +error: aborting due to 46 previous errors diff --git a/tests/ui/search_is_some_fixable_some_2021.fixed b/tests/ui/search_is_some_fixable_some_2021.fixed new file mode 100644 index 0000000000000..d2b05db562a0b --- /dev/null +++ b/tests/ui/search_is_some_fixable_some_2021.fixed @@ -0,0 +1,11 @@ +//@edition: 2021 +#![warn(clippy::search_is_some)] + +fn main() { + fn ref_bindings() { + let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().any(|(&x, y)| x == *y); + //~^ search_is_some + let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().any(|(&x, y)| x == *y); + //~^ search_is_some + } +} diff --git a/tests/ui/search_is_some_fixable_some_2021.rs b/tests/ui/search_is_some_fixable_some_2021.rs new file mode 100644 index 0000000000000..c3f5ef769dab7 --- /dev/null +++ b/tests/ui/search_is_some_fixable_some_2021.rs @@ -0,0 +1,11 @@ +//@edition: 2021 +#![warn(clippy::search_is_some)] + +fn main() { + fn ref_bindings() { + let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().find(|(&x, y)| x == *y).is_some(); + //~^ search_is_some + let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().find(|&(&x, y)| x == *y).is_some(); + //~^ search_is_some + } +} diff --git a/tests/ui/search_is_some_fixable_some_2021.stderr b/tests/ui/search_is_some_fixable_some_2021.stderr new file mode 100644 index 0000000000000..91d9540e6fcf3 --- /dev/null +++ b/tests/ui/search_is_some_fixable_some_2021.stderr @@ -0,0 +1,17 @@ +error: called `is_some()` after searching an `Iterator` with `find` + --> tests/ui/search_is_some_fixable_some_2021.rs:6:55 + | +LL | let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().find(|(&x, y)| x == *y).is_some(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `any(|(&x, y)| x == *y)` + | + = note: `-D clippy::search-is-some` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::search_is_some)]` + +error: called `is_some()` after searching an `Iterator` with `find` + --> tests/ui/search_is_some_fixable_some_2021.rs:8:55 + | +LL | let _ = [&(&1, 2), &(&3, 4), &(&5, 4)].iter().find(|&(&x, y)| x == *y).is_some(); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `any(|(&x, y)| x == *y)` + +error: aborting due to 2 previous errors + diff --git a/tests/ui/shadow.rs b/tests/ui/shadow.rs index 7d503a1cf6c17..05009b2ddd416 100644 --- a/tests/ui/shadow.rs +++ b/tests/ui/shadow.rs @@ -167,4 +167,19 @@ fn issue13795(value: Issue13795) { //~^ shadow_same } +fn issue14377() { + let a; + let b; + (a, b) = (0, 1); + + struct S { + c: i32, + d: i32, + } + + let c; + let d; + S { c, d } = S { c: 1, d: 2 }; +} + fn main() {} diff --git a/tests/ui/should_impl_trait/corner_cases.rs b/tests/ui/should_impl_trait/corner_cases.rs index 4ec0f02d66451..53704f59cb999 100644 --- a/tests/ui/should_impl_trait/corner_cases.rs +++ b/tests/ui/should_impl_trait/corner_cases.rs @@ -1,6 +1,5 @@ //@ check-pass -#![warn(clippy::all, clippy::pedantic)] #![allow( clippy::missing_errors_doc, clippy::needless_pass_by_value, diff --git a/tests/ui/should_impl_trait/method_list_1.rs b/tests/ui/should_impl_trait/method_list_1.rs index 87b3a7d2fa0cf..e8de0e04c0c4c 100644 --- a/tests/ui/should_impl_trait/method_list_1.rs +++ b/tests/ui/should_impl_trait/method_list_1.rs @@ -1,4 +1,3 @@ -#![warn(clippy::all, clippy::pedantic)] #![allow( clippy::missing_errors_doc, clippy::needless_pass_by_value, diff --git a/tests/ui/should_impl_trait/method_list_1.stderr b/tests/ui/should_impl_trait/method_list_1.stderr index 8738b61192a3c..5609d6a21a360 100644 --- a/tests/ui/should_impl_trait/method_list_1.stderr +++ b/tests/ui/should_impl_trait/method_list_1.stderr @@ -1,5 +1,5 @@ error: method `add` can be confused for the standard trait method `std::ops::Add::add` - --> tests/ui/should_impl_trait/method_list_1.rs:25:5 + --> tests/ui/should_impl_trait/method_list_1.rs:24:5 | LL | / pub fn add(self, other: T) -> T { LL | | @@ -13,7 +13,7 @@ LL | | } = help: to override `-D warnings` add `#[allow(clippy::should_implement_trait)]` error: method `as_mut` can be confused for the standard trait method `std::convert::AsMut::as_mut` - --> tests/ui/should_impl_trait/method_list_1.rs:31:5 + --> tests/ui/should_impl_trait/method_list_1.rs:30:5 | LL | / pub fn as_mut(&mut self) -> &mut T { LL | | @@ -25,7 +25,7 @@ LL | | } = help: consider implementing the trait `std::convert::AsMut` or choosing a less ambiguous method name error: method `as_ref` can be confused for the standard trait method `std::convert::AsRef::as_ref` - --> tests/ui/should_impl_trait/method_list_1.rs:37:5 + --> tests/ui/should_impl_trait/method_list_1.rs:36:5 | LL | / pub fn as_ref(&self) -> &T { LL | | @@ -37,7 +37,7 @@ LL | | } = help: consider implementing the trait `std::convert::AsRef` or choosing a less ambiguous method name error: method `bitand` can be confused for the standard trait method `std::ops::BitAnd::bitand` - --> tests/ui/should_impl_trait/method_list_1.rs:43:5 + --> tests/ui/should_impl_trait/method_list_1.rs:42:5 | LL | / pub fn bitand(self, rhs: T) -> T { LL | | @@ -49,7 +49,7 @@ LL | | } = help: consider implementing the trait `std::ops::BitAnd` or choosing a less ambiguous method name error: method `bitor` can be confused for the standard trait method `std::ops::BitOr::bitor` - --> tests/ui/should_impl_trait/method_list_1.rs:49:5 + --> tests/ui/should_impl_trait/method_list_1.rs:48:5 | LL | / pub fn bitor(self, rhs: Self) -> Self { LL | | @@ -61,7 +61,7 @@ LL | | } = help: consider implementing the trait `std::ops::BitOr` or choosing a less ambiguous method name error: method `bitxor` can be confused for the standard trait method `std::ops::BitXor::bitxor` - --> tests/ui/should_impl_trait/method_list_1.rs:55:5 + --> tests/ui/should_impl_trait/method_list_1.rs:54:5 | LL | / pub fn bitxor(self, rhs: Self) -> Self { LL | | @@ -73,7 +73,7 @@ LL | | } = help: consider implementing the trait `std::ops::BitXor` or choosing a less ambiguous method name error: method `borrow` can be confused for the standard trait method `std::borrow::Borrow::borrow` - --> tests/ui/should_impl_trait/method_list_1.rs:61:5 + --> tests/ui/should_impl_trait/method_list_1.rs:60:5 | LL | / pub fn borrow(&self) -> &str { LL | | @@ -85,7 +85,7 @@ LL | | } = help: consider implementing the trait `std::borrow::Borrow` or choosing a less ambiguous method name error: method `borrow_mut` can be confused for the standard trait method `std::borrow::BorrowMut::borrow_mut` - --> tests/ui/should_impl_trait/method_list_1.rs:67:5 + --> tests/ui/should_impl_trait/method_list_1.rs:66:5 | LL | / pub fn borrow_mut(&mut self) -> &mut str { LL | | @@ -97,7 +97,7 @@ LL | | } = help: consider implementing the trait `std::borrow::BorrowMut` or choosing a less ambiguous method name error: method `clone` can be confused for the standard trait method `std::clone::Clone::clone` - --> tests/ui/should_impl_trait/method_list_1.rs:73:5 + --> tests/ui/should_impl_trait/method_list_1.rs:72:5 | LL | / pub fn clone(&self) -> Self { LL | | @@ -109,7 +109,7 @@ LL | | } = help: consider implementing the trait `std::clone::Clone` or choosing a less ambiguous method name error: method `cmp` can be confused for the standard trait method `std::cmp::Ord::cmp` - --> tests/ui/should_impl_trait/method_list_1.rs:79:5 + --> tests/ui/should_impl_trait/method_list_1.rs:78:5 | LL | / pub fn cmp(&self, other: &Self) -> Self { LL | | @@ -121,7 +121,7 @@ LL | | } = help: consider implementing the trait `std::cmp::Ord` or choosing a less ambiguous method name error: method `default` can be confused for the standard trait method `std::default::Default::default` - --> tests/ui/should_impl_trait/method_list_1.rs:85:5 + --> tests/ui/should_impl_trait/method_list_1.rs:84:5 | LL | / pub fn default() -> Self { LL | | @@ -133,7 +133,7 @@ LL | | } = help: consider implementing the trait `std::default::Default` or choosing a less ambiguous method name error: method `deref` can be confused for the standard trait method `std::ops::Deref::deref` - --> tests/ui/should_impl_trait/method_list_1.rs:91:5 + --> tests/ui/should_impl_trait/method_list_1.rs:90:5 | LL | / pub fn deref(&self) -> &Self { LL | | @@ -145,7 +145,7 @@ LL | | } = help: consider implementing the trait `std::ops::Deref` or choosing a less ambiguous method name error: method `deref_mut` can be confused for the standard trait method `std::ops::DerefMut::deref_mut` - --> tests/ui/should_impl_trait/method_list_1.rs:97:5 + --> tests/ui/should_impl_trait/method_list_1.rs:96:5 | LL | / pub fn deref_mut(&mut self) -> &mut Self { LL | | @@ -157,7 +157,7 @@ LL | | } = help: consider implementing the trait `std::ops::DerefMut` or choosing a less ambiguous method name error: method `div` can be confused for the standard trait method `std::ops::Div::div` - --> tests/ui/should_impl_trait/method_list_1.rs:103:5 + --> tests/ui/should_impl_trait/method_list_1.rs:102:5 | LL | / pub fn div(self, rhs: Self) -> Self { LL | | @@ -169,7 +169,7 @@ LL | | } = help: consider implementing the trait `std::ops::Div` or choosing a less ambiguous method name error: method `drop` can be confused for the standard trait method `std::ops::Drop::drop` - --> tests/ui/should_impl_trait/method_list_1.rs:109:5 + --> tests/ui/should_impl_trait/method_list_1.rs:108:5 | LL | / pub fn drop(&mut self) { LL | | diff --git a/tests/ui/should_impl_trait/method_list_2.rs b/tests/ui/should_impl_trait/method_list_2.rs index f0c4d4f15cb63..1f25ab3938a3d 100644 --- a/tests/ui/should_impl_trait/method_list_2.rs +++ b/tests/ui/should_impl_trait/method_list_2.rs @@ -1,4 +1,3 @@ -#![warn(clippy::all, clippy::pedantic)] #![allow( clippy::missing_errors_doc, clippy::needless_pass_by_value, diff --git a/tests/ui/should_impl_trait/method_list_2.stderr b/tests/ui/should_impl_trait/method_list_2.stderr index 85de74337020d..0f5818507779f 100644 --- a/tests/ui/should_impl_trait/method_list_2.stderr +++ b/tests/ui/should_impl_trait/method_list_2.stderr @@ -1,5 +1,5 @@ error: method `eq` can be confused for the standard trait method `std::cmp::PartialEq::eq` - --> tests/ui/should_impl_trait/method_list_2.rs:26:5 + --> tests/ui/should_impl_trait/method_list_2.rs:25:5 | LL | / pub fn eq(&self, other: &Self) -> bool { LL | | @@ -13,7 +13,7 @@ LL | | } = help: to override `-D warnings` add `#[allow(clippy::should_implement_trait)]` error: method `from_iter` can be confused for the standard trait method `std::iter::FromIterator::from_iter` - --> tests/ui/should_impl_trait/method_list_2.rs:32:5 + --> tests/ui/should_impl_trait/method_list_2.rs:31:5 | LL | / pub fn from_iter(iter: T) -> Self { LL | | @@ -25,7 +25,7 @@ LL | | } = help: consider implementing the trait `std::iter::FromIterator` or choosing a less ambiguous method name error: method `from_str` can be confused for the standard trait method `std::str::FromStr::from_str` - --> tests/ui/should_impl_trait/method_list_2.rs:38:5 + --> tests/ui/should_impl_trait/method_list_2.rs:37:5 | LL | / pub fn from_str(s: &str) -> Result { LL | | @@ -37,7 +37,7 @@ LL | | } = help: consider implementing the trait `std::str::FromStr` or choosing a less ambiguous method name error: method `hash` can be confused for the standard trait method `std::hash::Hash::hash` - --> tests/ui/should_impl_trait/method_list_2.rs:44:5 + --> tests/ui/should_impl_trait/method_list_2.rs:43:5 | LL | / pub fn hash(&self, state: &mut T) { LL | | @@ -49,7 +49,7 @@ LL | | } = help: consider implementing the trait `std::hash::Hash` or choosing a less ambiguous method name error: method `index` can be confused for the standard trait method `std::ops::Index::index` - --> tests/ui/should_impl_trait/method_list_2.rs:50:5 + --> tests/ui/should_impl_trait/method_list_2.rs:49:5 | LL | / pub fn index(&self, index: usize) -> &Self { LL | | @@ -61,7 +61,7 @@ LL | | } = help: consider implementing the trait `std::ops::Index` or choosing a less ambiguous method name error: method `index_mut` can be confused for the standard trait method `std::ops::IndexMut::index_mut` - --> tests/ui/should_impl_trait/method_list_2.rs:56:5 + --> tests/ui/should_impl_trait/method_list_2.rs:55:5 | LL | / pub fn index_mut(&mut self, index: usize) -> &mut Self { LL | | @@ -73,7 +73,7 @@ LL | | } = help: consider implementing the trait `std::ops::IndexMut` or choosing a less ambiguous method name error: method `into_iter` can be confused for the standard trait method `std::iter::IntoIterator::into_iter` - --> tests/ui/should_impl_trait/method_list_2.rs:62:5 + --> tests/ui/should_impl_trait/method_list_2.rs:61:5 | LL | / pub fn into_iter(self) -> Self { LL | | @@ -85,7 +85,7 @@ LL | | } = help: consider implementing the trait `std::iter::IntoIterator` or choosing a less ambiguous method name error: method `mul` can be confused for the standard trait method `std::ops::Mul::mul` - --> tests/ui/should_impl_trait/method_list_2.rs:68:5 + --> tests/ui/should_impl_trait/method_list_2.rs:67:5 | LL | / pub fn mul(self, rhs: Self) -> Self { LL | | @@ -97,7 +97,7 @@ LL | | } = help: consider implementing the trait `std::ops::Mul` or choosing a less ambiguous method name error: method `neg` can be confused for the standard trait method `std::ops::Neg::neg` - --> tests/ui/should_impl_trait/method_list_2.rs:74:5 + --> tests/ui/should_impl_trait/method_list_2.rs:73:5 | LL | / pub fn neg(self) -> Self { LL | | @@ -109,7 +109,7 @@ LL | | } = help: consider implementing the trait `std::ops::Neg` or choosing a less ambiguous method name error: method `next` can be confused for the standard trait method `std::iter::Iterator::next` - --> tests/ui/should_impl_trait/method_list_2.rs:80:5 + --> tests/ui/should_impl_trait/method_list_2.rs:79:5 | LL | / pub fn next(&mut self) -> Option { LL | | @@ -121,7 +121,7 @@ LL | | } = help: consider implementing the trait `std::iter::Iterator` or choosing a less ambiguous method name error: method `not` can be confused for the standard trait method `std::ops::Not::not` - --> tests/ui/should_impl_trait/method_list_2.rs:86:5 + --> tests/ui/should_impl_trait/method_list_2.rs:85:5 | LL | / pub fn not(self) -> Self { LL | | @@ -133,7 +133,7 @@ LL | | } = help: consider implementing the trait `std::ops::Not` or choosing a less ambiguous method name error: method `rem` can be confused for the standard trait method `std::ops::Rem::rem` - --> tests/ui/should_impl_trait/method_list_2.rs:92:5 + --> tests/ui/should_impl_trait/method_list_2.rs:91:5 | LL | / pub fn rem(self, rhs: Self) -> Self { LL | | @@ -145,7 +145,7 @@ LL | | } = help: consider implementing the trait `std::ops::Rem` or choosing a less ambiguous method name error: method `shl` can be confused for the standard trait method `std::ops::Shl::shl` - --> tests/ui/should_impl_trait/method_list_2.rs:98:5 + --> tests/ui/should_impl_trait/method_list_2.rs:97:5 | LL | / pub fn shl(self, rhs: Self) -> Self { LL | | @@ -157,7 +157,7 @@ LL | | } = help: consider implementing the trait `std::ops::Shl` or choosing a less ambiguous method name error: method `shr` can be confused for the standard trait method `std::ops::Shr::shr` - --> tests/ui/should_impl_trait/method_list_2.rs:104:5 + --> tests/ui/should_impl_trait/method_list_2.rs:103:5 | LL | / pub fn shr(self, rhs: Self) -> Self { LL | | @@ -169,7 +169,7 @@ LL | | } = help: consider implementing the trait `std::ops::Shr` or choosing a less ambiguous method name error: method `sub` can be confused for the standard trait method `std::ops::Sub::sub` - --> tests/ui/should_impl_trait/method_list_2.rs:110:5 + --> tests/ui/should_impl_trait/method_list_2.rs:109:5 | LL | / pub fn sub(self, rhs: Self) -> Self { LL | | diff --git a/tests/ui/single_call_fn.rs b/tests/ui/single_call_fn.rs index c1cc4032bec99..a1ecd7bc166cf 100644 --- a/tests/ui/single_call_fn.rs +++ b/tests/ui/single_call_fn.rs @@ -94,7 +94,7 @@ trait Trait { //~^ single_call_fn fn foo(&self); } -extern "C" { +unsafe extern "C" { // test some kind of foreign item fn rand() -> std::ffi::c_int; } diff --git a/tests/ui/single_match.fixed b/tests/ui/single_match.fixed index 0e198ec79344a..db5107600ee6d 100644 --- a/tests/ui/single_match.fixed +++ b/tests/ui/single_match.fixed @@ -366,3 +366,39 @@ fn irrefutable_match() { //~^^^^^^^^^ single_match //~| NOTE: you might want to preserve the comments from inside the `match` } + +fn issue_14493() { + macro_rules! mac { + (some) => { + Some(42) + }; + (any) => { + _ + }; + (str) => { + "foo" + }; + } + + if let Some(u) = mac!(some) { println!("{u}") } + //~^^^^ single_match + + // When scrutinee comes from macro, do not tell that arm will always match + // and suggest an equality check instead. + if mac!(str) == "foo" { println!("eq") } + //~^^^^ ERROR: for an equality check + + // Do not lint if any match arm come from expansion + match Some(0) { + mac!(some) => println!("eq"), + mac!(any) => println!("neq"), + } + match Some(0) { + Some(42) => println!("eq"), + mac!(any) => println!("neq"), + } + match Some(0) { + mac!(some) => println!("eq"), + _ => println!("neq"), + } +} diff --git a/tests/ui/single_match.rs b/tests/ui/single_match.rs index fcac65f8aaf5e..a367b94c4ca6b 100644 --- a/tests/ui/single_match.rs +++ b/tests/ui/single_match.rs @@ -461,3 +461,45 @@ fn irrefutable_match() { //~^^^^^^^^^ single_match //~| NOTE: you might want to preserve the comments from inside the `match` } + +fn issue_14493() { + macro_rules! mac { + (some) => { + Some(42) + }; + (any) => { + _ + }; + (str) => { + "foo" + }; + } + + match mac!(some) { + Some(u) => println!("{u}"), + _ => (), + } + //~^^^^ single_match + + // When scrutinee comes from macro, do not tell that arm will always match + // and suggest an equality check instead. + match mac!(str) { + "foo" => println!("eq"), + _ => (), + } + //~^^^^ ERROR: for an equality check + + // Do not lint if any match arm come from expansion + match Some(0) { + mac!(some) => println!("eq"), + mac!(any) => println!("neq"), + } + match Some(0) { + Some(42) => println!("eq"), + mac!(any) => println!("neq"), + } + match Some(0) { + mac!(some) => println!("eq"), + _ => println!("neq"), + } +} diff --git a/tests/ui/single_match.stderr b/tests/ui/single_match.stderr index 2467423b9c17d..1a4edc45c928d 100644 --- a/tests/ui/single_match.stderr +++ b/tests/ui/single_match.stderr @@ -321,5 +321,23 @@ LL + println!("{u}"); LL + } | -error: aborting due to 29 previous errors +error: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let` + --> tests/ui/single_match.rs:478:5 + | +LL | / match mac!(some) { +LL | | Some(u) => println!("{u}"), +LL | | _ => (), +LL | | } + | |_____^ help: try: `if let Some(u) = mac!(some) { println!("{u}") }` + +error: you seem to be trying to use `match` for an equality check. Consider using `if` + --> tests/ui/single_match.rs:486:5 + | +LL | / match mac!(str) { +LL | | "foo" => println!("eq"), +LL | | _ => (), +LL | | } + | |_____^ help: try: `if mac!(str) == "foo" { println!("eq") }` + +error: aborting due to 31 previous errors diff --git a/tests/ui/suspicious_doc_comments.fixed b/tests/ui/suspicious_doc_comments.fixed index 3696b0e066d28..3faa4b21ee414 100644 --- a/tests/ui/suspicious_doc_comments.fixed +++ b/tests/ui/suspicious_doc_comments.fixed @@ -87,4 +87,8 @@ pub mod useless_outer_doc { use std::mem; } +// Do not lint, this is not a `///!` +#[doc = "! here's some docs !"] +fn issue14265() {} + fn main() {} diff --git a/tests/ui/suspicious_doc_comments.rs b/tests/ui/suspicious_doc_comments.rs index 4107f5526d132..4af6ed850c2bb 100644 --- a/tests/ui/suspicious_doc_comments.rs +++ b/tests/ui/suspicious_doc_comments.rs @@ -87,4 +87,8 @@ pub mod useless_outer_doc { use std::mem; } +// Do not lint, this is not a `///!` +#[doc = "! here's some docs !"] +fn issue14265() {} + fn main() {} diff --git a/tests/ui/swap.fixed b/tests/ui/swap.fixed index 888665a17ad16..6a64e64e98fa2 100644 --- a/tests/ui/swap.fixed +++ b/tests/ui/swap.fixed @@ -1,14 +1,9 @@ //@aux-build: macro_rules.rs -#![warn(clippy::all)] #![allow( clippy::disallowed_names, clippy::no_effect, clippy::redundant_clone, - redundant_semicolons, - dead_code, - unused_assignments, - unused_variables, clippy::let_and_return, clippy::useless_vec, clippy::redundant_locals diff --git a/tests/ui/swap.rs b/tests/ui/swap.rs index 51af55ecd27c8..e2d89c47382da 100644 --- a/tests/ui/swap.rs +++ b/tests/ui/swap.rs @@ -1,14 +1,9 @@ //@aux-build: macro_rules.rs -#![warn(clippy::all)] #![allow( clippy::disallowed_names, clippy::no_effect, clippy::redundant_clone, - redundant_semicolons, - dead_code, - unused_assignments, - unused_variables, clippy::let_and_return, clippy::useless_vec, clippy::redundant_locals diff --git a/tests/ui/swap.stderr b/tests/ui/swap.stderr index 15f7566d58960..195b888187e6d 100644 --- a/tests/ui/swap.stderr +++ b/tests/ui/swap.stderr @@ -1,5 +1,5 @@ error: this looks like you are swapping `bar.a` and `bar.b` manually - --> tests/ui/swap.rs:28:5 + --> tests/ui/swap.rs:23:5 | LL | / let temp = bar.a; LL | | @@ -12,7 +12,7 @@ LL | | bar.b = temp; = help: to override `-D warnings` add `#[allow(clippy::manual_swap)]` error: this looks like you are swapping elements of `foo` manually - --> tests/ui/swap.rs:41:5 + --> tests/ui/swap.rs:36:5 | LL | / let temp = foo[0]; LL | | @@ -21,7 +21,7 @@ LL | | foo[1] = temp; | |__________________^ help: try: `foo.swap(0, 1);` error: this looks like you are swapping elements of `foo` manually - --> tests/ui/swap.rs:51:5 + --> tests/ui/swap.rs:46:5 | LL | / let temp = foo[0]; LL | | @@ -30,7 +30,7 @@ LL | | foo[1] = temp; | |__________________^ help: try: `foo.swap(0, 1);` error: this looks like you are swapping elements of `foo` manually - --> tests/ui/swap.rs:71:5 + --> tests/ui/swap.rs:66:5 | LL | / let temp = foo[0]; LL | | @@ -39,7 +39,7 @@ LL | | foo[1] = temp; | |__________________^ help: try: `foo.swap(0, 1);` error: this looks like you are swapping `a` and `b` manually - --> tests/ui/swap.rs:83:5 + --> tests/ui/swap.rs:78:5 | LL | / a ^= b; LL | | @@ -48,7 +48,7 @@ LL | | a ^= b; | |___________^ help: try: `std::mem::swap(&mut a, &mut b);` error: this looks like you are swapping `bar.a` and `bar.b` manually - --> tests/ui/swap.rs:92:5 + --> tests/ui/swap.rs:87:5 | LL | / bar.a ^= bar.b; LL | | @@ -57,7 +57,7 @@ LL | | bar.a ^= bar.b; | |___________________^ help: try: `std::mem::swap(&mut bar.a, &mut bar.b);` error: this looks like you are swapping elements of `foo` manually - --> tests/ui/swap.rs:101:5 + --> tests/ui/swap.rs:96:5 | LL | / foo[0] ^= foo[1]; LL | | @@ -66,7 +66,7 @@ LL | | foo[0] ^= foo[1]; | |_____________________^ help: try: `foo.swap(0, 1);` error: this looks like you are swapping `foo[0][1]` and `bar[1][0]` manually - --> tests/ui/swap.rs:131:5 + --> tests/ui/swap.rs:126:5 | LL | / let temp = foo[0][1]; LL | | @@ -77,7 +77,7 @@ LL | | bar[1][0] = temp; = note: or maybe you should use `std::mem::replace`? error: this looks like you are swapping `a` and `b` manually - --> tests/ui/swap.rs:147:7 + --> tests/ui/swap.rs:142:7 | LL | ; let t = a; | _______^ @@ -89,7 +89,7 @@ LL | | b = t; = note: or maybe you should use `std::mem::replace`? error: this looks like you are swapping `c.0` and `a` manually - --> tests/ui/swap.rs:158:7 + --> tests/ui/swap.rs:153:7 | LL | ; let t = c.0; | _______^ @@ -101,7 +101,7 @@ LL | | a = t; = note: or maybe you should use `std::mem::replace`? error: this looks like you are swapping `b` and `a` manually - --> tests/ui/swap.rs:188:5 + --> tests/ui/swap.rs:183:5 | LL | / let t = b; LL | | @@ -112,7 +112,7 @@ LL | | a = t; = note: or maybe you should use `std::mem::replace`? error: this looks like you are trying to swap `a` and `b` - --> tests/ui/swap.rs:143:5 + --> tests/ui/swap.rs:138:5 | LL | / a = b; LL | | @@ -120,11 +120,10 @@ LL | | b = a; | |_________^ help: try: `std::mem::swap(&mut a, &mut b)` | = note: or maybe you should use `std::mem::replace`? - = note: `-D clippy::almost-swapped` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::almost_swapped)]` + = note: `#[deny(clippy::almost_swapped)]` on by default error: this looks like you are trying to swap `c.0` and `a` - --> tests/ui/swap.rs:154:5 + --> tests/ui/swap.rs:149:5 | LL | / c.0 = a; LL | | @@ -134,7 +133,7 @@ LL | | a = c.0; = note: or maybe you should use `std::mem::replace`? error: this looks like you are trying to swap `a` and `b` - --> tests/ui/swap.rs:163:5 + --> tests/ui/swap.rs:158:5 | LL | / let a = b; LL | | @@ -144,7 +143,7 @@ LL | | let b = a; = note: or maybe you should use `std::mem::replace`? error: this looks like you are trying to swap `d` and `c` - --> tests/ui/swap.rs:169:5 + --> tests/ui/swap.rs:164:5 | LL | / d = c; LL | | @@ -154,7 +153,7 @@ LL | | c = d; = note: or maybe you should use `std::mem::replace`? error: this looks like you are trying to swap `a` and `b` - --> tests/ui/swap.rs:174:5 + --> tests/ui/swap.rs:169:5 | LL | / let a = b; LL | | @@ -164,7 +163,7 @@ LL | | b = a; = note: or maybe you should use `std::mem::replace`? error: this looks like you are swapping `s.0.x` and `s.0.y` manually - --> tests/ui/swap.rs:224:5 + --> tests/ui/swap.rs:219:5 | LL | / let t = s.0.x; LL | | diff --git a/tests/ui/swap_with_temporary.fixed b/tests/ui/swap_with_temporary.fixed new file mode 100644 index 0000000000000..4007d998ba068 --- /dev/null +++ b/tests/ui/swap_with_temporary.fixed @@ -0,0 +1,74 @@ +#![warn(clippy::swap_with_temporary)] + +use std::mem::swap; + +fn func() -> String { + String::from("func") +} + +fn func_returning_refmut(s: &mut String) -> &mut String { + s +} + +fn main() { + let mut x = String::from("x"); + let mut y = String::from("y"); + let mut zz = String::from("zz"); + let z = &mut zz; + + // No lint + swap(&mut x, &mut y); + + y = func(); + //~^ ERROR: swapping with a temporary value is inefficient + + x = func(); + //~^ ERROR: swapping with a temporary value is inefficient + + *z = func(); + //~^ ERROR: swapping with a temporary value is inefficient + + // No lint + swap(z, func_returning_refmut(&mut x)); + + swap(&mut y, z); + + *z = func(); + //~^ ERROR: swapping with a temporary value is inefficient + + macro_rules! mac { + (refmut $x:expr) => { + &mut $x + }; + (funcall $f:ident) => { + $f() + }; + (wholeexpr) => { + swap(&mut 42, &mut 0) + }; + (ident $v:ident) => { + $v + }; + } + *z = mac!(funcall func); + //~^ ERROR: swapping with a temporary value is inefficient + *mac!(ident z) = mac!(funcall func); + //~^ ERROR: swapping with a temporary value is inefficient + *mac!(ident z) = mac!(funcall func); + //~^ ERROR: swapping with a temporary value is inefficient + *mac!(refmut y) = func(); + //~^ ERROR: swapping with a temporary value is inefficient + + // No lint if it comes from a macro as it may depend on the arguments + mac!(wholeexpr); +} + +struct S { + t: String, +} + +fn dont_lint_those(s: &mut S, v: &mut [String], w: Option<&mut String>) { + swap(&mut s.t, &mut v[0]); + swap(&mut s.t, v.get_mut(0).unwrap()); + swap(w.unwrap(), &mut s.t); +} diff --git a/tests/ui/swap_with_temporary.rs b/tests/ui/swap_with_temporary.rs new file mode 100644 index 0000000000000..d403c086c0f4f --- /dev/null +++ b/tests/ui/swap_with_temporary.rs @@ -0,0 +1,74 @@ +#![warn(clippy::swap_with_temporary)] + +use std::mem::swap; + +fn func() -> String { + String::from("func") +} + +fn func_returning_refmut(s: &mut String) -> &mut String { + s +} + +fn main() { + let mut x = String::from("x"); + let mut y = String::from("y"); + let mut zz = String::from("zz"); + let z = &mut zz; + + // No lint + swap(&mut x, &mut y); + + swap(&mut func(), &mut y); + //~^ ERROR: swapping with a temporary value is inefficient + + swap(&mut x, &mut func()); + //~^ ERROR: swapping with a temporary value is inefficient + + swap(z, &mut func()); + //~^ ERROR: swapping with a temporary value is inefficient + + // No lint + swap(z, func_returning_refmut(&mut x)); + + swap(&mut y, z); + + swap(&mut func(), z); + //~^ ERROR: swapping with a temporary value is inefficient + + macro_rules! mac { + (refmut $x:expr) => { + &mut $x + }; + (funcall $f:ident) => { + $f() + }; + (wholeexpr) => { + swap(&mut 42, &mut 0) + }; + (ident $v:ident) => { + $v + }; + } + swap(&mut mac!(funcall func), z); + //~^ ERROR: swapping with a temporary value is inefficient + swap(&mut mac!(funcall func), mac!(ident z)); + //~^ ERROR: swapping with a temporary value is inefficient + swap(mac!(ident z), &mut mac!(funcall func)); + //~^ ERROR: swapping with a temporary value is inefficient + swap(mac!(refmut y), &mut func()); + //~^ ERROR: swapping with a temporary value is inefficient + + // No lint if it comes from a macro as it may depend on the arguments + mac!(wholeexpr); +} + +struct S { + t: String, +} + +fn dont_lint_those(s: &mut S, v: &mut [String], w: Option<&mut String>) { + swap(&mut s.t, &mut v[0]); + swap(&mut s.t, v.get_mut(0).unwrap()); + swap(w.unwrap(), &mut s.t); +} diff --git a/tests/ui/swap_with_temporary.stderr b/tests/ui/swap_with_temporary.stderr new file mode 100644 index 0000000000000..59355771a9648 --- /dev/null +++ b/tests/ui/swap_with_temporary.stderr @@ -0,0 +1,100 @@ +error: swapping with a temporary value is inefficient + --> tests/ui/swap_with_temporary.rs:22:5 + | +LL | swap(&mut func(), &mut y); + | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use assignment instead: `y = func()` + | +note: this expression returns a temporary value + --> tests/ui/swap_with_temporary.rs:22:15 + | +LL | swap(&mut func(), &mut y); + | ^^^^^^ + = note: `-D clippy::swap-with-temporary` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::swap_with_temporary)]` + +error: swapping with a temporary value is inefficient + --> tests/ui/swap_with_temporary.rs:25:5 + | +LL | swap(&mut x, &mut func()); + | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use assignment instead: `x = func()` + | +note: this expression returns a temporary value + --> tests/ui/swap_with_temporary.rs:25:23 + | +LL | swap(&mut x, &mut func()); + | ^^^^^^ + +error: swapping with a temporary value is inefficient + --> tests/ui/swap_with_temporary.rs:28:5 + | +LL | swap(z, &mut func()); + | ^^^^^^^^^^^^^^^^^^^^ help: use assignment instead: `*z = func()` + | +note: this expression returns a temporary value + --> tests/ui/swap_with_temporary.rs:28:18 + | +LL | swap(z, &mut func()); + | ^^^^^^ + +error: swapping with a temporary value is inefficient + --> tests/ui/swap_with_temporary.rs:36:5 + | +LL | swap(&mut func(), z); + | ^^^^^^^^^^^^^^^^^^^^ help: use assignment instead: `*z = func()` + | +note: this expression returns a temporary value + --> tests/ui/swap_with_temporary.rs:36:15 + | +LL | swap(&mut func(), z); + | ^^^^^^ + +error: swapping with a temporary value is inefficient + --> tests/ui/swap_with_temporary.rs:53:5 + | +LL | swap(&mut mac!(funcall func), z); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use assignment instead: `*z = mac!(funcall func)` + | +note: this expression returns a temporary value + --> tests/ui/swap_with_temporary.rs:53:15 + | +LL | swap(&mut mac!(funcall func), z); + | ^^^^^^^^^^^^^^^^^^ + +error: swapping with a temporary value is inefficient + --> tests/ui/swap_with_temporary.rs:55:5 + | +LL | swap(&mut mac!(funcall func), mac!(ident z)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use assignment instead: `*mac!(ident z) = mac!(funcall func)` + | +note: this expression returns a temporary value + --> tests/ui/swap_with_temporary.rs:55:15 + | +LL | swap(&mut mac!(funcall func), mac!(ident z)); + | ^^^^^^^^^^^^^^^^^^ + +error: swapping with a temporary value is inefficient + --> tests/ui/swap_with_temporary.rs:57:5 + | +LL | swap(mac!(ident z), &mut mac!(funcall func)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use assignment instead: `*mac!(ident z) = mac!(funcall func)` + | +note: this expression returns a temporary value + --> tests/ui/swap_with_temporary.rs:57:30 + | +LL | swap(mac!(ident z), &mut mac!(funcall func)); + | ^^^^^^^^^^^^^^^^^^ + +error: swapping with a temporary value is inefficient + --> tests/ui/swap_with_temporary.rs:59:5 + | +LL | swap(mac!(refmut y), &mut func()); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use assignment instead: `*mac!(refmut y) = func()` + | +note: this expression returns a temporary value + --> tests/ui/swap_with_temporary.rs:59:31 + | +LL | swap(mac!(refmut y), &mut func()); + | ^^^^^^ + +error: aborting due to 8 previous errors + diff --git a/tests/ui/swap_with_temporary_unfixable.rs b/tests/ui/swap_with_temporary_unfixable.rs new file mode 100644 index 0000000000000..a974ca82abf26 --- /dev/null +++ b/tests/ui/swap_with_temporary_unfixable.rs @@ -0,0 +1,62 @@ +//@no-rustfix +#![warn(clippy::swap_with_temporary)] + +use std::mem::swap; + +fn func() -> String { + String::from("func") +} + +fn func_returning_refmut(s: &mut String) -> &mut String { + s +} + +fn main() { + let mut x = String::from("x"); + let mut y = String::from("y"); + let mut zz = String::from("zz"); + let z = &mut zz; + + swap(&mut func(), &mut func()); + //~^ ERROR: swapping temporary values has no effect + + if matches!(swap(&mut func(), &mut func()), ()) { + //~^ ERROR: swapping temporary values has no effect + println!("Yeah"); + } + + if matches!(swap(z, &mut func()), ()) { + //~^ ERROR: swapping with a temporary value is inefficient + println!("Yeah"); + } + + macro_rules! mac { + (refmut $x:expr) => { + &mut $x + }; + (refmut) => { + mac!(refmut String::new()) + }; + (funcall $f:ident) => { + $f() + }; + } + + swap(mac!(refmut func()), z); + //~^ ERROR: swapping with a temporary value is inefficient + swap(&mut mac!(funcall func), &mut mac!(funcall func)); + //~^ ERROR: swapping temporary values has no effect + swap(mac!(refmut), mac!(refmut)); + //~^ ERROR: swapping temporary values has no effect + swap(mac!(refmut y), mac!(refmut)); + //~^ ERROR: swapping with a temporary value is inefficient +} + +fn bug(v1: &mut [i32], v2: &mut [i32]) { + // Incorrect: swapping temporary references (`&mut &mut` passed to swap) + std::mem::swap(&mut v1.last_mut().unwrap(), &mut v2.last_mut().unwrap()); + //~^ ERROR: swapping temporary values has no effect + + // Correct + std::mem::swap(v1.last_mut().unwrap(), v2.last_mut().unwrap()); +} diff --git a/tests/ui/swap_with_temporary_unfixable.stderr b/tests/ui/swap_with_temporary_unfixable.stderr new file mode 100644 index 0000000000000..856c5415d676c --- /dev/null +++ b/tests/ui/swap_with_temporary_unfixable.stderr @@ -0,0 +1,125 @@ +error: swapping temporary values has no effect + --> tests/ui/swap_with_temporary_unfixable.rs:20:5 + | +LL | swap(&mut func(), &mut func()); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: this expression returns a temporary value + --> tests/ui/swap_with_temporary_unfixable.rs:20:15 + | +LL | swap(&mut func(), &mut func()); + | ^^^^^^ +note: this expression returns a temporary value + --> tests/ui/swap_with_temporary_unfixable.rs:20:28 + | +LL | swap(&mut func(), &mut func()); + | ^^^^^^ + = note: `-D clippy::swap-with-temporary` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::swap_with_temporary)]` + +error: swapping temporary values has no effect + --> tests/ui/swap_with_temporary_unfixable.rs:23:17 + | +LL | if matches!(swap(&mut func(), &mut func()), ()) { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: this expression returns a temporary value + --> tests/ui/swap_with_temporary_unfixable.rs:23:27 + | +LL | if matches!(swap(&mut func(), &mut func()), ()) { + | ^^^^^^ +note: this expression returns a temporary value + --> tests/ui/swap_with_temporary_unfixable.rs:23:40 + | +LL | if matches!(swap(&mut func(), &mut func()), ()) { + | ^^^^^^ + +error: swapping with a temporary value is inefficient + --> tests/ui/swap_with_temporary_unfixable.rs:28:17 + | +LL | if matches!(swap(z, &mut func()), ()) { + | ^^^^^^^^^^^^^^^^^^^^ + | +note: this expression returns a temporary value + --> tests/ui/swap_with_temporary_unfixable.rs:28:30 + | +LL | if matches!(swap(z, &mut func()), ()) { + | ^^^^^^ + +error: swapping with a temporary value is inefficient + --> tests/ui/swap_with_temporary_unfixable.rs:45:5 + | +LL | swap(mac!(refmut func()), z); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: this is a mutable reference to a temporary value + --> tests/ui/swap_with_temporary_unfixable.rs:45:10 + | +LL | swap(mac!(refmut func()), z); + | ^^^^^^^^^^^^^^^^^^^ + +error: swapping temporary values has no effect + --> tests/ui/swap_with_temporary_unfixable.rs:47:5 + | +LL | swap(&mut mac!(funcall func), &mut mac!(funcall func)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: this expression returns a temporary value + --> tests/ui/swap_with_temporary_unfixable.rs:47:15 + | +LL | swap(&mut mac!(funcall func), &mut mac!(funcall func)); + | ^^^^^^^^^^^^^^^^^^ +note: this expression returns a temporary value + --> tests/ui/swap_with_temporary_unfixable.rs:47:40 + | +LL | swap(&mut mac!(funcall func), &mut mac!(funcall func)); + | ^^^^^^^^^^^^^^^^^^ + +error: swapping temporary values has no effect + --> tests/ui/swap_with_temporary_unfixable.rs:49:5 + | +LL | swap(mac!(refmut), mac!(refmut)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: this is a mutable reference to a temporary value + --> tests/ui/swap_with_temporary_unfixable.rs:49:10 + | +LL | swap(mac!(refmut), mac!(refmut)); + | ^^^^^^^^^^^^ +note: this is a mutable reference to a temporary value + --> tests/ui/swap_with_temporary_unfixable.rs:49:24 + | +LL | swap(mac!(refmut), mac!(refmut)); + | ^^^^^^^^^^^^ + +error: swapping with a temporary value is inefficient + --> tests/ui/swap_with_temporary_unfixable.rs:51:5 + | +LL | swap(mac!(refmut y), mac!(refmut)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: this is a mutable reference to a temporary value + --> tests/ui/swap_with_temporary_unfixable.rs:51:26 + | +LL | swap(mac!(refmut y), mac!(refmut)); + | ^^^^^^^^^^^^ + +error: swapping temporary values has no effect + --> tests/ui/swap_with_temporary_unfixable.rs:57:5 + | +LL | std::mem::swap(&mut v1.last_mut().unwrap(), &mut v2.last_mut().unwrap()); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: this expression returns a temporary value + --> tests/ui/swap_with_temporary_unfixable.rs:57:25 + | +LL | std::mem::swap(&mut v1.last_mut().unwrap(), &mut v2.last_mut().unwrap()); + | ^^^^^^^^^^^^^^^^^^^^^^ +note: this expression returns a temporary value + --> tests/ui/swap_with_temporary_unfixable.rs:57:54 + | +LL | std::mem::swap(&mut v1.last_mut().unwrap(), &mut v2.last_mut().unwrap()); + | ^^^^^^^^^^^^^^^^^^^^^^ + +error: aborting due to 8 previous errors + diff --git a/tests/ui/transmute.rs b/tests/ui/transmute.rs index 3aecde398dc3f..8c8674ac356de 100644 --- a/tests/ui/transmute.rs +++ b/tests/ui/transmute.rs @@ -23,19 +23,21 @@ fn my_vec() -> MyVec { #[allow(clippy::needless_lifetimes, clippy::transmute_ptr_to_ptr)] #[warn(clippy::useless_transmute)] unsafe fn _generic<'a, T, U: 'a>(t: &'a T) { - // FIXME: should lint - // let _: &'a T = core::mem::transmute(t); + unsafe { + // FIXME: should lint + // let _: &'a T = core::mem::transmute(t); - let _: &'a U = core::mem::transmute(t); + let _: &'a U = core::mem::transmute(t); - let _: *const T = core::mem::transmute(t); - //~^ useless_transmute + let _: *const T = core::mem::transmute(t); + //~^ useless_transmute - let _: *mut T = core::mem::transmute(t); - //~^ useless_transmute + let _: *mut T = core::mem::transmute(t); + //~^ useless_transmute - let _: *const U = core::mem::transmute(t); - //~^ useless_transmute + let _: *const U = core::mem::transmute(t); + //~^ useless_transmute + } } #[warn(clippy::useless_transmute)] @@ -59,7 +61,7 @@ fn useless() { let _: *const usize = std::mem::transmute(5_isize); //~^ useless_transmute - let _ = 5_isize as *const usize; + let _ = std::ptr::dangling::(); let _: *const usize = std::mem::transmute(1 + 1usize); //~^ useless_transmute @@ -68,19 +70,19 @@ fn useless() { } unsafe fn _f<'a, 'b>(x: &'a u32) -> &'b u32 { - std::mem::transmute(x) + unsafe { std::mem::transmute(x) } } unsafe fn _f2<'a, 'b>(x: *const (dyn Iterator + 'a)) -> *const (dyn Iterator + 'b) { - std::mem::transmute(x) + unsafe { std::mem::transmute(x) } } unsafe fn _f3<'a, 'b>(x: fn(&'a u32)) -> fn(&'b u32) { - std::mem::transmute(x) + unsafe { std::mem::transmute(x) } } unsafe fn _f4<'a, 'b>(x: std::borrow::Cow<'a, str>) -> std::borrow::Cow<'b, str> { - std::mem::transmute(x) + unsafe { std::mem::transmute(x) } } } diff --git a/tests/ui/transmute.stderr b/tests/ui/transmute.stderr index e0d28437aafc8..4219e09d2aba9 100644 --- a/tests/ui/transmute.stderr +++ b/tests/ui/transmute.stderr @@ -1,68 +1,68 @@ error: transmute from a reference to a pointer - --> tests/ui/transmute.rs:31:23 + --> tests/ui/transmute.rs:32:27 | -LL | let _: *const T = core::mem::transmute(t); - | ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T` +LL | let _: *const T = core::mem::transmute(t); + | ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T` | = note: `-D clippy::useless-transmute` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::useless_transmute)]` error: transmute from a reference to a pointer - --> tests/ui/transmute.rs:34:21 + --> tests/ui/transmute.rs:35:25 | -LL | let _: *mut T = core::mem::transmute(t); - | ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T as *mut T` +LL | let _: *mut T = core::mem::transmute(t); + | ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T as *mut T` error: transmute from a reference to a pointer - --> tests/ui/transmute.rs:37:23 + --> tests/ui/transmute.rs:38:27 | -LL | let _: *const U = core::mem::transmute(t); - | ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T as *const U` +LL | let _: *const U = core::mem::transmute(t); + | ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T as *const U` error: transmute from a type (`std::vec::Vec`) to itself - --> tests/ui/transmute.rs:44:27 + --> tests/ui/transmute.rs:46:27 | LL | let _: Vec = core::mem::transmute(my_vec()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: transmute from a type (`std::vec::Vec`) to itself - --> tests/ui/transmute.rs:47:27 + --> tests/ui/transmute.rs:49:27 | LL | let _: Vec = core::mem::transmute(my_vec()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: transmute from a type (`std::vec::Vec`) to itself - --> tests/ui/transmute.rs:50:27 + --> tests/ui/transmute.rs:52:27 | LL | let _: Vec = std::mem::transmute(my_vec()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: transmute from a type (`std::vec::Vec`) to itself - --> tests/ui/transmute.rs:53:27 + --> tests/ui/transmute.rs:55:27 | LL | let _: Vec = std::mem::transmute(my_vec()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: transmute from a type (`std::vec::Vec`) to itself - --> tests/ui/transmute.rs:56:27 + --> tests/ui/transmute.rs:58:27 | LL | let _: Vec = my_transmute(my_vec()); | ^^^^^^^^^^^^^^^^^^^^^^ error: transmute from an integer to a pointer - --> tests/ui/transmute.rs:59:31 + --> tests/ui/transmute.rs:61:31 | LL | let _: *const usize = std::mem::transmute(5_isize); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `5_isize as *const usize` error: transmute from an integer to a pointer - --> tests/ui/transmute.rs:64:31 + --> tests/ui/transmute.rs:66:31 | LL | let _: *const usize = std::mem::transmute(1 + 1usize); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(1 + 1usize) as *const usize` error: transmute from a type (`*const Usize`) to the type that it points to (`Usize`) - --> tests/ui/transmute.rs:96:24 + --> tests/ui/transmute.rs:98:24 | LL | let _: Usize = core::mem::transmute(int_const_ptr); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -71,25 +71,25 @@ LL | let _: Usize = core::mem::transmute(int_const_ptr); = help: to override `-D warnings` add `#[allow(clippy::crosspointer_transmute)]` error: transmute from a type (`*mut Usize`) to the type that it points to (`Usize`) - --> tests/ui/transmute.rs:99:24 + --> tests/ui/transmute.rs:101:24 | LL | let _: Usize = core::mem::transmute(int_mut_ptr); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: transmute from a type (`Usize`) to a pointer to that type (`*const Usize`) - --> tests/ui/transmute.rs:102:31 + --> tests/ui/transmute.rs:104:31 | LL | let _: *const Usize = core::mem::transmute(my_int()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: transmute from a type (`Usize`) to a pointer to that type (`*mut Usize`) - --> tests/ui/transmute.rs:105:29 + --> tests/ui/transmute.rs:107:29 | LL | let _: *mut Usize = core::mem::transmute(my_int()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: transmute from a `u8` to a `bool` - --> tests/ui/transmute.rs:112:28 + --> tests/ui/transmute.rs:114:28 | LL | let _: bool = unsafe { std::mem::transmute(0_u8) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `0_u8 != 0` @@ -98,7 +98,7 @@ LL | let _: bool = unsafe { std::mem::transmute(0_u8) }; = help: to override `-D warnings` add `#[allow(clippy::transmute_int_to_bool)]` error: transmute from a `u16` to a `f16` - --> tests/ui/transmute.rs:119:31 + --> tests/ui/transmute.rs:121:31 | LL | let _: f16 = unsafe { std::mem::transmute(0_u16) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f16::from_bits(0_u16)` @@ -107,97 +107,97 @@ LL | let _: f16 = unsafe { std::mem::transmute(0_u16) }; = help: to override `-D warnings` add `#[allow(clippy::transmute_int_to_float)]` error: transmute from a `i16` to a `f16` - --> tests/ui/transmute.rs:122:31 + --> tests/ui/transmute.rs:124:31 | LL | let _: f16 = unsafe { std::mem::transmute(0_i16) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f16::from_bits(0_i16 as u16)` error: transmute from a `u32` to a `f32` - --> tests/ui/transmute.rs:125:31 + --> tests/ui/transmute.rs:127:31 | LL | let _: f32 = unsafe { std::mem::transmute(0_u32) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f32::from_bits(0_u32)` error: transmute from a `i32` to a `f32` - --> tests/ui/transmute.rs:128:31 + --> tests/ui/transmute.rs:130:31 | LL | let _: f32 = unsafe { std::mem::transmute(0_i32) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f32::from_bits(0_i32 as u32)` error: transmute from a `u64` to a `f64` - --> tests/ui/transmute.rs:131:31 + --> tests/ui/transmute.rs:133:31 | LL | let _: f64 = unsafe { std::mem::transmute(0_u64) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f64::from_bits(0_u64)` error: transmute from a `i64` to a `f64` - --> tests/ui/transmute.rs:134:31 + --> tests/ui/transmute.rs:136:31 | LL | let _: f64 = unsafe { std::mem::transmute(0_i64) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f64::from_bits(0_i64 as u64)` error: transmute from a `u128` to a `f128` - --> tests/ui/transmute.rs:137:32 + --> tests/ui/transmute.rs:139:32 | LL | let _: f128 = unsafe { std::mem::transmute(0_u128) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f128::from_bits(0_u128)` error: transmute from a `i128` to a `f128` - --> tests/ui/transmute.rs:140:32 + --> tests/ui/transmute.rs:142:32 | LL | let _: f128 = unsafe { std::mem::transmute(0_i128) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f128::from_bits(0_i128 as u128)` error: transmute from a `u16` to a `f16` - --> tests/ui/transmute.rs:145:39 + --> tests/ui/transmute.rs:147:39 | LL | const VALUE16: f16 = unsafe { std::mem::transmute(0_u16) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f16::from_bits(0_u16)` error: transmute from a `u32` to a `f32` - --> tests/ui/transmute.rs:148:39 + --> tests/ui/transmute.rs:150:39 | LL | const VALUE32: f32 = unsafe { std::mem::transmute(0_u32) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f32::from_bits(0_u32)` error: transmute from a `i64` to a `f64` - --> tests/ui/transmute.rs:151:39 + --> tests/ui/transmute.rs:153:39 | LL | const VALUE64: f64 = unsafe { std::mem::transmute(0_i64) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f64::from_bits(0_i64 as u64)` error: transmute from a `i128` to a `f128` - --> tests/ui/transmute.rs:154:41 + --> tests/ui/transmute.rs:156:41 | LL | const VALUE128: f128 = unsafe { std::mem::transmute(0_i128) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f128::from_bits(0_i128 as u128)` error: transmute from a `i16` to a `f16` - --> tests/ui/transmute.rs:158:22 + --> tests/ui/transmute.rs:160:22 | LL | unsafe { std::mem::transmute(v) } | ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f16::from_bits(v as u16)` error: transmute from a `i32` to a `f32` - --> tests/ui/transmute.rs:163:22 + --> tests/ui/transmute.rs:165:22 | LL | unsafe { std::mem::transmute(v) } | ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f32::from_bits(v as u32)` error: transmute from a `u64` to a `f64` - --> tests/ui/transmute.rs:168:22 + --> tests/ui/transmute.rs:170:22 | LL | unsafe { std::mem::transmute(v) } | ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f64::from_bits(v)` error: transmute from a `u128` to a `f128` - --> tests/ui/transmute.rs:173:22 + --> tests/ui/transmute.rs:175:22 | LL | unsafe { std::mem::transmute(v) } | ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f128::from_bits(v)` error: transmute from a `u8` to a `[u8; 1]` - --> tests/ui/transmute.rs:182:30 + --> tests/ui/transmute.rs:184:30 | LL | let _: [u8; 1] = std::mem::transmute(0u8); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u8.to_ne_bytes()` @@ -206,121 +206,121 @@ LL | let _: [u8; 1] = std::mem::transmute(0u8); = help: to override `-D warnings` add `#[allow(clippy::transmute_num_to_bytes)]` error: transmute from a `u32` to a `[u8; 4]` - --> tests/ui/transmute.rs:185:30 + --> tests/ui/transmute.rs:187:30 | LL | let _: [u8; 4] = std::mem::transmute(0u32); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u32.to_ne_bytes()` error: transmute from a `u128` to a `[u8; 16]` - --> tests/ui/transmute.rs:188:31 + --> tests/ui/transmute.rs:190:31 | LL | let _: [u8; 16] = std::mem::transmute(0u128); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u128.to_ne_bytes()` error: transmute from a `i8` to a `[u8; 1]` - --> tests/ui/transmute.rs:191:30 + --> tests/ui/transmute.rs:193:30 | LL | let _: [u8; 1] = std::mem::transmute(0i8); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i8.to_ne_bytes()` error: transmute from a `i32` to a `[u8; 4]` - --> tests/ui/transmute.rs:194:30 + --> tests/ui/transmute.rs:196:30 | LL | let _: [u8; 4] = std::mem::transmute(0i32); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i32.to_ne_bytes()` error: transmute from a `i128` to a `[u8; 16]` - --> tests/ui/transmute.rs:197:31 + --> tests/ui/transmute.rs:199:31 | LL | let _: [u8; 16] = std::mem::transmute(0i128); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i128.to_ne_bytes()` error: transmute from a `f16` to a `[u8; 2]` - --> tests/ui/transmute.rs:200:30 + --> tests/ui/transmute.rs:202:30 | LL | let _: [u8; 2] = std::mem::transmute(0.0f16); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f16.to_ne_bytes()` error: transmute from a `f32` to a `[u8; 4]` - --> tests/ui/transmute.rs:203:30 + --> tests/ui/transmute.rs:205:30 | LL | let _: [u8; 4] = std::mem::transmute(0.0f32); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f32.to_ne_bytes()` error: transmute from a `f64` to a `[u8; 8]` - --> tests/ui/transmute.rs:206:30 + --> tests/ui/transmute.rs:208:30 | LL | let _: [u8; 8] = std::mem::transmute(0.0f64); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f64.to_ne_bytes()` error: transmute from a `f128` to a `[u8; 16]` - --> tests/ui/transmute.rs:209:31 + --> tests/ui/transmute.rs:211:31 | LL | let _: [u8; 16] = std::mem::transmute(0.0f128); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f128.to_ne_bytes()` error: transmute from a `u8` to a `[u8; 1]` - --> tests/ui/transmute.rs:215:30 + --> tests/ui/transmute.rs:217:30 | LL | let _: [u8; 1] = std::mem::transmute(0u8); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u8.to_ne_bytes()` error: transmute from a `u32` to a `[u8; 4]` - --> tests/ui/transmute.rs:218:30 + --> tests/ui/transmute.rs:220:30 | LL | let _: [u8; 4] = std::mem::transmute(0u32); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u32.to_ne_bytes()` error: transmute from a `u128` to a `[u8; 16]` - --> tests/ui/transmute.rs:221:31 + --> tests/ui/transmute.rs:223:31 | LL | let _: [u8; 16] = std::mem::transmute(0u128); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u128.to_ne_bytes()` error: transmute from a `i8` to a `[u8; 1]` - --> tests/ui/transmute.rs:224:30 + --> tests/ui/transmute.rs:226:30 | LL | let _: [u8; 1] = std::mem::transmute(0i8); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i8.to_ne_bytes()` error: transmute from a `i32` to a `[u8; 4]` - --> tests/ui/transmute.rs:227:30 + --> tests/ui/transmute.rs:229:30 | LL | let _: [u8; 4] = std::mem::transmute(0i32); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i32.to_ne_bytes()` error: transmute from a `i128` to a `[u8; 16]` - --> tests/ui/transmute.rs:230:31 + --> tests/ui/transmute.rs:232:31 | LL | let _: [u8; 16] = std::mem::transmute(0i128); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i128.to_ne_bytes()` error: transmute from a `f16` to a `[u8; 2]` - --> tests/ui/transmute.rs:233:30 + --> tests/ui/transmute.rs:235:30 | LL | let _: [u8; 2] = std::mem::transmute(0.0f16); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f16.to_ne_bytes()` error: transmute from a `f32` to a `[u8; 4]` - --> tests/ui/transmute.rs:236:30 + --> tests/ui/transmute.rs:238:30 | LL | let _: [u8; 4] = std::mem::transmute(0.0f32); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f32.to_ne_bytes()` error: transmute from a `f64` to a `[u8; 8]` - --> tests/ui/transmute.rs:239:30 + --> tests/ui/transmute.rs:241:30 | LL | let _: [u8; 8] = std::mem::transmute(0.0f64); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f64.to_ne_bytes()` error: transmute from a `f128` to a `[u8; 16]` - --> tests/ui/transmute.rs:242:31 + --> tests/ui/transmute.rs:244:31 | LL | let _: [u8; 16] = std::mem::transmute(0.0f128); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f128.to_ne_bytes()` error: transmute from a `&[u8]` to a `&str` - --> tests/ui/transmute.rs:251:28 + --> tests/ui/transmute.rs:253:28 | LL | let _: &str = unsafe { std::mem::transmute(B) }; | ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::str::from_utf8(B).unwrap()` @@ -329,13 +329,13 @@ LL | let _: &str = unsafe { std::mem::transmute(B) }; = help: to override `-D warnings` add `#[allow(clippy::transmute_bytes_to_str)]` error: transmute from a `&mut [u8]` to a `&mut str` - --> tests/ui/transmute.rs:254:32 + --> tests/ui/transmute.rs:256:32 | LL | let _: &mut str = unsafe { std::mem::transmute(mb) }; | ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::str::from_utf8_mut(mb).unwrap()` error: transmute from a `&[u8]` to a `&str` - --> tests/ui/transmute.rs:257:30 + --> tests/ui/transmute.rs:259:30 | LL | const _: &str = unsafe { std::mem::transmute(B) }; | ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::str::from_utf8_unchecked(B)` diff --git a/tests/ui/transmute_null_to_fn.rs b/tests/ui/transmute_null_to_fn.rs index e88f05bb662e2..4712374af934f 100644 --- a/tests/ui/transmute_null_to_fn.rs +++ b/tests/ui/transmute_null_to_fn.rs @@ -1,6 +1,7 @@ #![allow(dead_code)] #![warn(clippy::transmute_null_to_fn)] #![allow(clippy::zero_ptr, clippy::missing_transmute_annotations)] +#![allow(clippy::manual_dangling_ptr)] // Easy to lint because these only span one line. fn one_liners() { diff --git a/tests/ui/transmute_null_to_fn.stderr b/tests/ui/transmute_null_to_fn.stderr index f7d80147445d8..b5b0d4ecc7c03 100644 --- a/tests/ui/transmute_null_to_fn.stderr +++ b/tests/ui/transmute_null_to_fn.stderr @@ -1,5 +1,5 @@ error: transmuting a known null pointer into a function pointer - --> tests/ui/transmute_null_to_fn.rs:8:23 + --> tests/ui/transmute_null_to_fn.rs:9:23 | LL | let _: fn() = std::mem::transmute(0 as *const ()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this transmute results in undefined behavior @@ -9,7 +9,7 @@ LL | let _: fn() = std::mem::transmute(0 as *const ()); = help: to override `-D warnings` add `#[allow(clippy::transmute_null_to_fn)]` error: transmuting a known null pointer into a function pointer - --> tests/ui/transmute_null_to_fn.rs:11:23 + --> tests/ui/transmute_null_to_fn.rs:12:23 | LL | let _: fn() = std::mem::transmute(std::ptr::null::<()>()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this transmute results in undefined behavior @@ -17,7 +17,7 @@ LL | let _: fn() = std::mem::transmute(std::ptr::null::<()>()); = help: try wrapping your function pointer type in `Option` instead, and using `None` as a null pointer value error: transmuting a known null pointer into a function pointer - --> tests/ui/transmute_null_to_fn.rs:22:23 + --> tests/ui/transmute_null_to_fn.rs:23:23 | LL | let _: fn() = std::mem::transmute(ZPTR); | ^^^^^^^^^^^^^^^^^^^^^^^^^ this transmute results in undefined behavior @@ -25,7 +25,7 @@ LL | let _: fn() = std::mem::transmute(ZPTR); = help: try wrapping your function pointer type in `Option` instead, and using `None` as a null pointer value error: transmuting a known null pointer into a function pointer - --> tests/ui/transmute_null_to_fn.rs:32:23 + --> tests/ui/transmute_null_to_fn.rs:33:23 | LL | let _: fn() = std::mem::transmute(0 as *const u8 as *const ()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this transmute results in undefined behavior @@ -33,7 +33,7 @@ LL | let _: fn() = std::mem::transmute(0 as *const u8 as *const ()); = help: try wrapping your function pointer type in `Option` instead, and using `None` as a null pointer value error: transmuting a known null pointer into a function pointer - --> tests/ui/transmute_null_to_fn.rs:35:23 + --> tests/ui/transmute_null_to_fn.rs:36:23 | LL | let _: fn() = std::mem::transmute(std::ptr::null::<()>() as *const u8); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this transmute results in undefined behavior @@ -41,7 +41,7 @@ LL | let _: fn() = std::mem::transmute(std::ptr::null::<()>() as *const = help: try wrapping your function pointer type in `Option` instead, and using `None` as a null pointer value error: transmuting a known null pointer into a function pointer - --> tests/ui/transmute_null_to_fn.rs:38:23 + --> tests/ui/transmute_null_to_fn.rs:39:23 | LL | let _: fn() = std::mem::transmute(ZPTR as *const u8); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this transmute results in undefined behavior diff --git a/tests/ui/transmute_ptr_to_ptr.fixed b/tests/ui/transmute_ptr_to_ptr.fixed index 3a67be5f45d0b..476e7e35a1f61 100644 --- a/tests/ui/transmute_ptr_to_ptr.fixed +++ b/tests/ui/transmute_ptr_to_ptr.fixed @@ -8,12 +8,12 @@ use std::mem::transmute; // Make sure we can do static lifetime transmutes unsafe fn transmute_lifetime_to_static<'a, T>(t: &'a T) -> &'static T { - transmute::<&'a T, &'static T>(t) + unsafe { transmute::<&'a T, &'static T>(t) } } // Make sure we can do non-static lifetime transmutes unsafe fn transmute_lifetime<'a, 'b, T>(t: &'a T, u: &'b T) -> &'b T { - transmute::<&'a T, &'b T>(t) + unsafe { transmute::<&'a T, &'b T>(t) } } struct LifetimeParam<'a> { diff --git a/tests/ui/transmute_ptr_to_ptr.rs b/tests/ui/transmute_ptr_to_ptr.rs index 01ad3a3296b17..7356668bcab5a 100644 --- a/tests/ui/transmute_ptr_to_ptr.rs +++ b/tests/ui/transmute_ptr_to_ptr.rs @@ -8,12 +8,12 @@ use std::mem::transmute; // Make sure we can do static lifetime transmutes unsafe fn transmute_lifetime_to_static<'a, T>(t: &'a T) -> &'static T { - transmute::<&'a T, &'static T>(t) + unsafe { transmute::<&'a T, &'static T>(t) } } // Make sure we can do non-static lifetime transmutes unsafe fn transmute_lifetime<'a, 'b, T>(t: &'a T, u: &'b T) -> &'b T { - transmute::<&'a T, &'b T>(t) + unsafe { transmute::<&'a T, &'b T>(t) } } struct LifetimeParam<'a> { diff --git a/tests/ui/transmute_ptr_to_ref.fixed b/tests/ui/transmute_ptr_to_ref.fixed index 1bd45bc10a39b..61e3ac2fe88e3 100644 --- a/tests/ui/transmute_ptr_to_ref.fixed +++ b/tests/ui/transmute_ptr_to_ref.fixed @@ -6,33 +6,35 @@ )] unsafe fn _ptr_to_ref(p: *const T, m: *mut T, o: *const U, om: *mut U) { - let _: &T = &*p; - //~^ transmute_ptr_to_ref - let _: &T = &*p; + unsafe { + let _: &T = &*p; + //~^ transmute_ptr_to_ref + let _: &T = &*p; - let _: &mut T = &mut *m; - //~^ transmute_ptr_to_ref - let _: &mut T = &mut *m; + let _: &mut T = &mut *m; + //~^ transmute_ptr_to_ref + let _: &mut T = &mut *m; - let _: &T = &*m; - //~^ transmute_ptr_to_ref - let _: &T = &*m; + let _: &T = &*m; + //~^ transmute_ptr_to_ref + let _: &T = &*m; - let _: &mut T = &mut *(p as *mut T); - //~^ transmute_ptr_to_ref - let _ = &mut *(p as *mut T); + let _: &mut T = &mut *(p as *mut T); + //~^ transmute_ptr_to_ref + let _ = &mut *(p as *mut T); - let _: &T = &*(o as *const T); - //~^ transmute_ptr_to_ref - let _: &T = &*(o as *const T); + let _: &T = &*(o as *const T); + //~^ transmute_ptr_to_ref + let _: &T = &*(o as *const T); - let _: &mut T = &mut *(om as *mut T); - //~^ transmute_ptr_to_ref - let _: &mut T = &mut *(om as *mut T); + let _: &mut T = &mut *(om as *mut T); + //~^ transmute_ptr_to_ref + let _: &mut T = &mut *(om as *mut T); - let _: &T = &*(om as *const T); - //~^ transmute_ptr_to_ref - let _: &T = &*(om as *const T); + let _: &T = &*(om as *const T); + //~^ transmute_ptr_to_ref + let _: &T = &*(om as *const T); + } } fn _issue1231() { @@ -54,47 +56,53 @@ fn _issue1231() { } unsafe fn _issue8924<'a, 'b, 'c>(x: *const &'a u32, y: *const &'b u32) -> &'c &'b u32 { - match 0 { - 0 => &*x.cast::<&u32>(), - //~^ transmute_ptr_to_ref - 1 => &*y.cast::<&u32>(), - //~^ transmute_ptr_to_ref - 2 => &*x.cast::<&'b u32>(), - //~^ transmute_ptr_to_ref - _ => &*y.cast::<&'b u32>(), - //~^ transmute_ptr_to_ref + unsafe { + match 0 { + 0 => &*x.cast::<&u32>(), + //~^ transmute_ptr_to_ref + 1 => &*y.cast::<&u32>(), + //~^ transmute_ptr_to_ref + 2 => &*x.cast::<&'b u32>(), + //~^ transmute_ptr_to_ref + _ => &*y.cast::<&'b u32>(), + //~^ transmute_ptr_to_ref + } } } #[clippy::msrv = "1.38"] unsafe fn _meets_msrv<'a, 'b, 'c>(x: *const &'a u32) -> &'c &'b u32 { - let a = 0u32; - let a = &a as *const u32; - let _: &u32 = &*a; - //~^ transmute_ptr_to_ref - let _: &u32 = &*a.cast::(); - //~^ transmute_ptr_to_ref - match 0 { - 0 => &*x.cast::<&u32>(), + unsafe { + let a = 0u32; + let a = &a as *const u32; + let _: &u32 = &*a; //~^ transmute_ptr_to_ref - _ => &*x.cast::<&'b u32>(), + let _: &u32 = &*a.cast::(); //~^ transmute_ptr_to_ref + match 0 { + 0 => &*x.cast::<&u32>(), + //~^ transmute_ptr_to_ref + _ => &*x.cast::<&'b u32>(), + //~^ transmute_ptr_to_ref + } } } #[clippy::msrv = "1.37"] unsafe fn _under_msrv<'a, 'b, 'c>(x: *const &'a u32) -> &'c &'b u32 { - let a = 0u32; - let a = &a as *const u32; - let _: &u32 = &*a; - //~^ transmute_ptr_to_ref - let _: &u32 = &*(a as *const u32); - //~^ transmute_ptr_to_ref - match 0 { - 0 => &*(x as *const () as *const &u32), + unsafe { + let a = 0u32; + let a = &a as *const u32; + let _: &u32 = &*a; //~^ transmute_ptr_to_ref - _ => &*(x as *const () as *const &'b u32), + let _: &u32 = &*(a as *const u32); //~^ transmute_ptr_to_ref + match 0 { + 0 => &*(x as *const () as *const &u32), + //~^ transmute_ptr_to_ref + _ => &*(x as *const () as *const &'b u32), + //~^ transmute_ptr_to_ref + } } } diff --git a/tests/ui/transmute_ptr_to_ref.rs b/tests/ui/transmute_ptr_to_ref.rs index cbe64bf1ea6bc..48e2f527b554c 100644 --- a/tests/ui/transmute_ptr_to_ref.rs +++ b/tests/ui/transmute_ptr_to_ref.rs @@ -6,33 +6,35 @@ )] unsafe fn _ptr_to_ref(p: *const T, m: *mut T, o: *const U, om: *mut U) { - let _: &T = std::mem::transmute(p); - //~^ transmute_ptr_to_ref - let _: &T = &*p; + unsafe { + let _: &T = std::mem::transmute(p); + //~^ transmute_ptr_to_ref + let _: &T = &*p; - let _: &mut T = std::mem::transmute(m); - //~^ transmute_ptr_to_ref - let _: &mut T = &mut *m; + let _: &mut T = std::mem::transmute(m); + //~^ transmute_ptr_to_ref + let _: &mut T = &mut *m; - let _: &T = std::mem::transmute(m); - //~^ transmute_ptr_to_ref - let _: &T = &*m; + let _: &T = std::mem::transmute(m); + //~^ transmute_ptr_to_ref + let _: &T = &*m; - let _: &mut T = std::mem::transmute(p as *mut T); - //~^ transmute_ptr_to_ref - let _ = &mut *(p as *mut T); + let _: &mut T = std::mem::transmute(p as *mut T); + //~^ transmute_ptr_to_ref + let _ = &mut *(p as *mut T); - let _: &T = std::mem::transmute(o); - //~^ transmute_ptr_to_ref - let _: &T = &*(o as *const T); + let _: &T = std::mem::transmute(o); + //~^ transmute_ptr_to_ref + let _: &T = &*(o as *const T); - let _: &mut T = std::mem::transmute(om); - //~^ transmute_ptr_to_ref - let _: &mut T = &mut *(om as *mut T); + let _: &mut T = std::mem::transmute(om); + //~^ transmute_ptr_to_ref + let _: &mut T = &mut *(om as *mut T); - let _: &T = std::mem::transmute(om); - //~^ transmute_ptr_to_ref - let _: &T = &*(om as *const T); + let _: &T = std::mem::transmute(om); + //~^ transmute_ptr_to_ref + let _: &T = &*(om as *const T); + } } fn _issue1231() { @@ -54,47 +56,53 @@ fn _issue1231() { } unsafe fn _issue8924<'a, 'b, 'c>(x: *const &'a u32, y: *const &'b u32) -> &'c &'b u32 { - match 0 { - 0 => std::mem::transmute(x), - //~^ transmute_ptr_to_ref - 1 => std::mem::transmute(y), - //~^ transmute_ptr_to_ref - 2 => std::mem::transmute::<_, &&'b u32>(x), - //~^ transmute_ptr_to_ref - _ => std::mem::transmute::<_, &&'b u32>(y), - //~^ transmute_ptr_to_ref + unsafe { + match 0 { + 0 => std::mem::transmute(x), + //~^ transmute_ptr_to_ref + 1 => std::mem::transmute(y), + //~^ transmute_ptr_to_ref + 2 => std::mem::transmute::<_, &&'b u32>(x), + //~^ transmute_ptr_to_ref + _ => std::mem::transmute::<_, &&'b u32>(y), + //~^ transmute_ptr_to_ref + } } } #[clippy::msrv = "1.38"] unsafe fn _meets_msrv<'a, 'b, 'c>(x: *const &'a u32) -> &'c &'b u32 { - let a = 0u32; - let a = &a as *const u32; - let _: &u32 = std::mem::transmute(a); - //~^ transmute_ptr_to_ref - let _: &u32 = std::mem::transmute::<_, &u32>(a); - //~^ transmute_ptr_to_ref - match 0 { - 0 => std::mem::transmute(x), + unsafe { + let a = 0u32; + let a = &a as *const u32; + let _: &u32 = std::mem::transmute(a); //~^ transmute_ptr_to_ref - _ => std::mem::transmute::<_, &&'b u32>(x), + let _: &u32 = std::mem::transmute::<_, &u32>(a); //~^ transmute_ptr_to_ref + match 0 { + 0 => std::mem::transmute(x), + //~^ transmute_ptr_to_ref + _ => std::mem::transmute::<_, &&'b u32>(x), + //~^ transmute_ptr_to_ref + } } } #[clippy::msrv = "1.37"] unsafe fn _under_msrv<'a, 'b, 'c>(x: *const &'a u32) -> &'c &'b u32 { - let a = 0u32; - let a = &a as *const u32; - let _: &u32 = std::mem::transmute(a); - //~^ transmute_ptr_to_ref - let _: &u32 = std::mem::transmute::<_, &u32>(a); - //~^ transmute_ptr_to_ref - match 0 { - 0 => std::mem::transmute(x), + unsafe { + let a = 0u32; + let a = &a as *const u32; + let _: &u32 = std::mem::transmute(a); //~^ transmute_ptr_to_ref - _ => std::mem::transmute::<_, &&'b u32>(x), + let _: &u32 = std::mem::transmute::<_, &u32>(a); //~^ transmute_ptr_to_ref + match 0 { + 0 => std::mem::transmute(x), + //~^ transmute_ptr_to_ref + _ => std::mem::transmute::<_, &&'b u32>(x), + //~^ transmute_ptr_to_ref + } } } diff --git a/tests/ui/transmute_ptr_to_ref.stderr b/tests/ui/transmute_ptr_to_ref.stderr index 7fad9b4065a56..7685c345c8619 100644 --- a/tests/ui/transmute_ptr_to_ref.stderr +++ b/tests/ui/transmute_ptr_to_ref.stderr @@ -1,137 +1,137 @@ error: transmute from a pointer type (`*const T`) to a reference type (`&T`) - --> tests/ui/transmute_ptr_to_ref.rs:9:17 + --> tests/ui/transmute_ptr_to_ref.rs:10:21 | -LL | let _: &T = std::mem::transmute(p); - | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*p` +LL | let _: &T = std::mem::transmute(p); + | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*p` | = note: `-D clippy::transmute-ptr-to-ref` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::transmute_ptr_to_ref)]` error: transmute from a pointer type (`*mut T`) to a reference type (`&mut T`) - --> tests/ui/transmute_ptr_to_ref.rs:13:21 + --> tests/ui/transmute_ptr_to_ref.rs:14:25 | -LL | let _: &mut T = std::mem::transmute(m); - | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut *m` +LL | let _: &mut T = std::mem::transmute(m); + | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut *m` error: transmute from a pointer type (`*mut T`) to a reference type (`&T`) - --> tests/ui/transmute_ptr_to_ref.rs:17:17 + --> tests/ui/transmute_ptr_to_ref.rs:18:21 | -LL | let _: &T = std::mem::transmute(m); - | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*m` +LL | let _: &T = std::mem::transmute(m); + | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*m` error: transmute from a pointer type (`*mut T`) to a reference type (`&mut T`) - --> tests/ui/transmute_ptr_to_ref.rs:21:21 + --> tests/ui/transmute_ptr_to_ref.rs:22:25 | -LL | let _: &mut T = std::mem::transmute(p as *mut T); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut *(p as *mut T)` +LL | let _: &mut T = std::mem::transmute(p as *mut T); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut *(p as *mut T)` error: transmute from a pointer type (`*const U`) to a reference type (`&T`) - --> tests/ui/transmute_ptr_to_ref.rs:25:17 + --> tests/ui/transmute_ptr_to_ref.rs:26:21 | -LL | let _: &T = std::mem::transmute(o); - | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(o as *const T)` +LL | let _: &T = std::mem::transmute(o); + | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(o as *const T)` error: transmute from a pointer type (`*mut U`) to a reference type (`&mut T`) - --> tests/ui/transmute_ptr_to_ref.rs:29:21 + --> tests/ui/transmute_ptr_to_ref.rs:30:25 | -LL | let _: &mut T = std::mem::transmute(om); - | ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut *(om as *mut T)` +LL | let _: &mut T = std::mem::transmute(om); + | ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut *(om as *mut T)` error: transmute from a pointer type (`*mut U`) to a reference type (`&T`) - --> tests/ui/transmute_ptr_to_ref.rs:33:17 + --> tests/ui/transmute_ptr_to_ref.rs:34:21 | -LL | let _: &T = std::mem::transmute(om); - | ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(om as *const T)` +LL | let _: &T = std::mem::transmute(om); + | ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(om as *const T)` error: transmute from a pointer type (`*const i32`) to a reference type (`&_issue1231::Foo<'_, u8>`) - --> tests/ui/transmute_ptr_to_ref.rs:44:32 + --> tests/ui/transmute_ptr_to_ref.rs:46:32 | LL | let _: &Foo = unsafe { std::mem::transmute::<_, &Foo<_>>(raw) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*raw.cast::>()` error: transmute from a pointer type (`*const i32`) to a reference type (`&_issue1231::Foo<'_, &u8>`) - --> tests/ui/transmute_ptr_to_ref.rs:47:33 + --> tests/ui/transmute_ptr_to_ref.rs:49:33 | LL | let _: &Foo<&u8> = unsafe { std::mem::transmute::<_, &Foo<&_>>(raw) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*raw.cast::>()` error: transmute from a pointer type (`*const i32`) to a reference type (`&u8`) - --> tests/ui/transmute_ptr_to_ref.rs:52:14 + --> tests/ui/transmute_ptr_to_ref.rs:54:14 | LL | unsafe { std::mem::transmute::<_, Bar>(raw) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(raw as *const u8)` error: transmute from a pointer type (`*const &u32`) to a reference type (`&&u32`) - --> tests/ui/transmute_ptr_to_ref.rs:58:14 + --> tests/ui/transmute_ptr_to_ref.rs:61:18 | -LL | 0 => std::mem::transmute(x), - | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*x.cast::<&u32>()` +LL | 0 => std::mem::transmute(x), + | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*x.cast::<&u32>()` error: transmute from a pointer type (`*const &u32`) to a reference type (`&&u32`) - --> tests/ui/transmute_ptr_to_ref.rs:60:14 + --> tests/ui/transmute_ptr_to_ref.rs:63:18 | -LL | 1 => std::mem::transmute(y), - | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*y.cast::<&u32>()` +LL | 1 => std::mem::transmute(y), + | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*y.cast::<&u32>()` error: transmute from a pointer type (`*const &u32`) to a reference type (`&&u32`) - --> tests/ui/transmute_ptr_to_ref.rs:62:14 + --> tests/ui/transmute_ptr_to_ref.rs:65:18 | -LL | 2 => std::mem::transmute::<_, &&'b u32>(x), - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*x.cast::<&'b u32>()` +LL | 2 => std::mem::transmute::<_, &&'b u32>(x), + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*x.cast::<&'b u32>()` error: transmute from a pointer type (`*const &u32`) to a reference type (`&&u32`) - --> tests/ui/transmute_ptr_to_ref.rs:64:14 + --> tests/ui/transmute_ptr_to_ref.rs:67:18 | -LL | _ => std::mem::transmute::<_, &&'b u32>(y), - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*y.cast::<&'b u32>()` +LL | _ => std::mem::transmute::<_, &&'b u32>(y), + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*y.cast::<&'b u32>()` error: transmute from a pointer type (`*const u32`) to a reference type (`&u32`) - --> tests/ui/transmute_ptr_to_ref.rs:73:19 + --> tests/ui/transmute_ptr_to_ref.rs:78:23 | -LL | let _: &u32 = std::mem::transmute(a); - | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*a` +LL | let _: &u32 = std::mem::transmute(a); + | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*a` error: transmute from a pointer type (`*const u32`) to a reference type (`&u32`) - --> tests/ui/transmute_ptr_to_ref.rs:75:19 + --> tests/ui/transmute_ptr_to_ref.rs:80:23 | -LL | let _: &u32 = std::mem::transmute::<_, &u32>(a); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*a.cast::()` +LL | let _: &u32 = std::mem::transmute::<_, &u32>(a); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*a.cast::()` error: transmute from a pointer type (`*const &u32`) to a reference type (`&&u32`) - --> tests/ui/transmute_ptr_to_ref.rs:78:14 + --> tests/ui/transmute_ptr_to_ref.rs:83:18 | -LL | 0 => std::mem::transmute(x), - | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*x.cast::<&u32>()` +LL | 0 => std::mem::transmute(x), + | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*x.cast::<&u32>()` error: transmute from a pointer type (`*const &u32`) to a reference type (`&&u32`) - --> tests/ui/transmute_ptr_to_ref.rs:80:14 + --> tests/ui/transmute_ptr_to_ref.rs:85:18 | -LL | _ => std::mem::transmute::<_, &&'b u32>(x), - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*x.cast::<&'b u32>()` +LL | _ => std::mem::transmute::<_, &&'b u32>(x), + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*x.cast::<&'b u32>()` error: transmute from a pointer type (`*const u32`) to a reference type (`&u32`) - --> tests/ui/transmute_ptr_to_ref.rs:89:19 + --> tests/ui/transmute_ptr_to_ref.rs:96:23 | -LL | let _: &u32 = std::mem::transmute(a); - | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*a` +LL | let _: &u32 = std::mem::transmute(a); + | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*a` error: transmute from a pointer type (`*const u32`) to a reference type (`&u32`) - --> tests/ui/transmute_ptr_to_ref.rs:91:19 + --> tests/ui/transmute_ptr_to_ref.rs:98:23 | -LL | let _: &u32 = std::mem::transmute::<_, &u32>(a); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(a as *const u32)` +LL | let _: &u32 = std::mem::transmute::<_, &u32>(a); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(a as *const u32)` error: transmute from a pointer type (`*const &u32`) to a reference type (`&&u32`) - --> tests/ui/transmute_ptr_to_ref.rs:94:14 + --> tests/ui/transmute_ptr_to_ref.rs:101:18 | -LL | 0 => std::mem::transmute(x), - | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(x as *const () as *const &u32)` +LL | 0 => std::mem::transmute(x), + | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(x as *const () as *const &u32)` error: transmute from a pointer type (`*const &u32`) to a reference type (`&&u32`) - --> tests/ui/transmute_ptr_to_ref.rs:96:14 + --> tests/ui/transmute_ptr_to_ref.rs:103:18 | -LL | _ => std::mem::transmute::<_, &&'b u32>(x), - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(x as *const () as *const &'b u32)` +LL | _ => std::mem::transmute::<_, &&'b u32>(x), + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(x as *const () as *const &'b u32)` error: aborting due to 22 previous errors diff --git a/tests/ui/transmuting_null.rs b/tests/ui/transmuting_null.rs index bcd35bbd4e72a..f3eb5060cd0d3 100644 --- a/tests/ui/transmuting_null.rs +++ b/tests/ui/transmuting_null.rs @@ -3,6 +3,7 @@ #![allow(clippy::zero_ptr)] #![allow(clippy::transmute_ptr_to_ref)] #![allow(clippy::eq_op, clippy::missing_transmute_annotations)] +#![allow(clippy::manual_dangling_ptr)] // Easy to lint because these only span one line. fn one_liners() { diff --git a/tests/ui/transmuting_null.stderr b/tests/ui/transmuting_null.stderr index 84e6e374d5253..c68e4102e405b 100644 --- a/tests/ui/transmuting_null.stderr +++ b/tests/ui/transmuting_null.stderr @@ -1,5 +1,5 @@ error: transmuting a known null pointer into a reference - --> tests/ui/transmuting_null.rs:10:23 + --> tests/ui/transmuting_null.rs:11:23 | LL | let _: &u64 = std::mem::transmute(0 as *const u64); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -8,13 +8,13 @@ LL | let _: &u64 = std::mem::transmute(0 as *const u64); = help: to override `-D warnings` add `#[allow(clippy::transmuting_null)]` error: transmuting a known null pointer into a reference - --> tests/ui/transmuting_null.rs:13:23 + --> tests/ui/transmuting_null.rs:14:23 | LL | let _: &u64 = std::mem::transmute(std::ptr::null::()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: transmuting a known null pointer into a reference - --> tests/ui/transmuting_null.rs:24:23 + --> tests/ui/transmuting_null.rs:25:23 | LL | let _: &u64 = std::mem::transmute(ZPTR); | ^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/type_complexity.rs b/tests/ui/type_complexity.rs index 89c4955c9f6f0..9d145516d6107 100644 --- a/tests/ui/type_complexity.rs +++ b/tests/ui/type_complexity.rs @@ -1,6 +1,5 @@ -#![warn(clippy::all)] -#![allow(unused, clippy::needless_pass_by_value, clippy::vec_box, clippy::useless_vec)] #![feature(associated_type_defaults)] +#![allow(clippy::needless_pass_by_value, clippy::vec_box, clippy::useless_vec)] type Alias = Vec>>; // no warning here diff --git a/tests/ui/type_complexity.stderr b/tests/ui/type_complexity.stderr index 181e04d38e9a4..a7f6a074a4a4d 100644 --- a/tests/ui/type_complexity.stderr +++ b/tests/ui/type_complexity.stderr @@ -1,5 +1,5 @@ error: very complex type used. Consider factoring parts into `type` definitions - --> tests/ui/type_complexity.rs:7:12 + --> tests/ui/type_complexity.rs:6:12 | LL | const CST: (u32, (u32, (u32, (u32, u32)))) = (0, (0, (0, (0, 0)))); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -8,85 +8,85 @@ LL | const CST: (u32, (u32, (u32, (u32, u32)))) = (0, (0, (0, (0, 0)))); = help: to override `-D warnings` add `#[allow(clippy::type_complexity)]` error: very complex type used. Consider factoring parts into `type` definitions - --> tests/ui/type_complexity.rs:10:12 + --> tests/ui/type_complexity.rs:9:12 | LL | static ST: (u32, (u32, (u32, (u32, u32)))) = (0, (0, (0, (0, 0)))); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: very complex type used. Consider factoring parts into `type` definitions - --> tests/ui/type_complexity.rs:14:8 + --> tests/ui/type_complexity.rs:13:8 | LL | f: Vec>>, | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: very complex type used. Consider factoring parts into `type` definitions - --> tests/ui/type_complexity.rs:18:11 + --> tests/ui/type_complexity.rs:17:11 | LL | struct Ts(Vec>>); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: very complex type used. Consider factoring parts into `type` definitions - --> tests/ui/type_complexity.rs:22:11 + --> tests/ui/type_complexity.rs:21:11 | LL | Tuple(Vec>>), | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: very complex type used. Consider factoring parts into `type` definitions - --> tests/ui/type_complexity.rs:24:17 + --> tests/ui/type_complexity.rs:23:17 | LL | Struct { f: Vec>> }, | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: very complex type used. Consider factoring parts into `type` definitions - --> tests/ui/type_complexity.rs:29:14 + --> tests/ui/type_complexity.rs:28:14 | LL | const A: (u32, (u32, (u32, (u32, u32)))) = (0, (0, (0, (0, 0)))); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: very complex type used. Consider factoring parts into `type` definitions - --> tests/ui/type_complexity.rs:32:30 + --> tests/ui/type_complexity.rs:31:30 | LL | fn impl_method(&self, p: Vec>>) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: very complex type used. Consider factoring parts into `type` definitions - --> tests/ui/type_complexity.rs:37:14 + --> tests/ui/type_complexity.rs:36:14 | LL | const A: Vec>>; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: very complex type used. Consider factoring parts into `type` definitions - --> tests/ui/type_complexity.rs:40:14 + --> tests/ui/type_complexity.rs:39:14 | LL | type B = Vec>>; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: very complex type used. Consider factoring parts into `type` definitions - --> tests/ui/type_complexity.rs:43:25 + --> tests/ui/type_complexity.rs:42:25 | LL | fn method(&self, p: Vec>>); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: very complex type used. Consider factoring parts into `type` definitions - --> tests/ui/type_complexity.rs:46:29 + --> tests/ui/type_complexity.rs:45:29 | LL | fn def_method(&self, p: Vec>>) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: very complex type used. Consider factoring parts into `type` definitions - --> tests/ui/type_complexity.rs:59:15 + --> tests/ui/type_complexity.rs:58:15 | LL | fn test1() -> Vec>> { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: very complex type used. Consider factoring parts into `type` definitions - --> tests/ui/type_complexity.rs:65:14 + --> tests/ui/type_complexity.rs:64:14 | LL | fn test2(_x: Vec>>) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: very complex type used. Consider factoring parts into `type` definitions - --> tests/ui/type_complexity.rs:69:13 + --> tests/ui/type_complexity.rs:68:13 | LL | let _y: Vec>> = vec![]; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/uninit_vec.rs b/tests/ui/uninit_vec.rs index a48397137992f..eeb281322da92 100644 --- a/tests/ui/uninit_vec.rs +++ b/tests/ui/uninit_vec.rs @@ -15,9 +15,17 @@ union MyOwnMaybeUninit { // https://github.com/rust-lang/rust/issues/119620 unsafe fn requires_paramenv() { - let mut vec = Vec::>::with_capacity(1); + unsafe { + let mut vec = Vec::>::with_capacity(1); + //~^ uninit_vec + vec.set_len(1); + } + + let mut vec = Vec::>::with_capacity(2); //~^ uninit_vec - vec.set_len(1); + unsafe { + vec.set_len(2); + } } fn main() { diff --git a/tests/ui/uninit_vec.stderr b/tests/ui/uninit_vec.stderr index 7ff6140a2c3ec..1b821ef004e6f 100644 --- a/tests/ui/uninit_vec.stderr +++ b/tests/ui/uninit_vec.stderr @@ -1,18 +1,29 @@ error: calling `set_len()` immediately after reserving a buffer creates uninitialized values - --> tests/ui/uninit_vec.rs:18:5 + --> tests/ui/uninit_vec.rs:24:5 | -LL | let mut vec = Vec::>::with_capacity(1); +LL | let mut vec = Vec::>::with_capacity(2); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -LL | -LL | vec.set_len(1); - | ^^^^^^^^^^^^^^ +... +LL | vec.set_len(2); + | ^^^^^^^^^^^^^^ | = help: initialize the buffer or wrap the content in `MaybeUninit` = note: `-D clippy::uninit-vec` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::uninit_vec)]` error: calling `set_len()` immediately after reserving a buffer creates uninitialized values - --> tests/ui/uninit_vec.rs:25:5 + --> tests/ui/uninit_vec.rs:19:9 + | +LL | let mut vec = Vec::>::with_capacity(1); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +LL | +LL | vec.set_len(1); + | ^^^^^^^^^^^^^^ + | + = help: initialize the buffer or wrap the content in `MaybeUninit` + +error: calling `set_len()` immediately after reserving a buffer creates uninitialized values + --> tests/ui/uninit_vec.rs:33:5 | LL | let mut vec: Vec = Vec::with_capacity(1000); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -23,7 +34,7 @@ LL | vec.set_len(200); = help: initialize the buffer or wrap the content in `MaybeUninit` error: calling `set_len()` immediately after reserving a buffer creates uninitialized values - --> tests/ui/uninit_vec.rs:33:5 + --> tests/ui/uninit_vec.rs:41:5 | LL | vec.reserve(1000); | ^^^^^^^^^^^^^^^^^^ @@ -34,7 +45,7 @@ LL | vec.set_len(200); = help: initialize the buffer or wrap the content in `MaybeUninit` error: calling `set_len()` on empty `Vec` creates out-of-bound values - --> tests/ui/uninit_vec.rs:41:5 + --> tests/ui/uninit_vec.rs:49:5 | LL | let mut vec: Vec = Vec::new(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -43,7 +54,7 @@ LL | vec.set_len(200); | ^^^^^^^^^^^^^^^^ error: calling `set_len()` on empty `Vec` creates out-of-bound values - --> tests/ui/uninit_vec.rs:49:5 + --> tests/ui/uninit_vec.rs:57:5 | LL | let mut vec: Vec = Default::default(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -52,7 +63,7 @@ LL | vec.set_len(200); | ^^^^^^^^^^^^^^^^ error: calling `set_len()` on empty `Vec` creates out-of-bound values - --> tests/ui/uninit_vec.rs:56:5 + --> tests/ui/uninit_vec.rs:64:5 | LL | let mut vec: Vec = Vec::default(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -61,7 +72,7 @@ LL | vec.set_len(200); | ^^^^^^^^^^^^^^^^ error: calling `set_len()` immediately after reserving a buffer creates uninitialized values - --> tests/ui/uninit_vec.rs:76:5 + --> tests/ui/uninit_vec.rs:84:5 | LL | let mut vec: Vec = Vec::with_capacity(1000); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -72,7 +83,7 @@ LL | vec.set_len(200); = help: initialize the buffer or wrap the content in `MaybeUninit` error: calling `set_len()` immediately after reserving a buffer creates uninitialized values - --> tests/ui/uninit_vec.rs:87:5 + --> tests/ui/uninit_vec.rs:95:5 | LL | my_vec.vec.reserve(1000); | ^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -83,7 +94,7 @@ LL | my_vec.vec.set_len(200); = help: initialize the buffer or wrap the content in `MaybeUninit` error: calling `set_len()` immediately after reserving a buffer creates uninitialized values - --> tests/ui/uninit_vec.rs:94:5 + --> tests/ui/uninit_vec.rs:102:5 | LL | my_vec.vec = Vec::with_capacity(1000); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -94,7 +105,7 @@ LL | my_vec.vec.set_len(200); = help: initialize the buffer or wrap the content in `MaybeUninit` error: calling `set_len()` immediately after reserving a buffer creates uninitialized values - --> tests/ui/uninit_vec.rs:65:9 + --> tests/ui/uninit_vec.rs:73:9 | LL | let mut vec: Vec = Vec::with_capacity(1000); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -105,7 +116,7 @@ LL | vec.set_len(200); = help: initialize the buffer or wrap the content in `MaybeUninit` error: calling `set_len()` immediately after reserving a buffer creates uninitialized values - --> tests/ui/uninit_vec.rs:70:9 + --> tests/ui/uninit_vec.rs:78:9 | LL | vec.reserve(1000); | ^^^^^^^^^^^^^^^^^^ @@ -116,7 +127,7 @@ LL | vec.set_len(200); = help: initialize the buffer or wrap the content in `MaybeUninit` error: calling `set_len()` immediately after reserving a buffer creates uninitialized values - --> tests/ui/uninit_vec.rs:150:9 + --> tests/ui/uninit_vec.rs:158:9 | LL | let mut vec: Vec = Vec::with_capacity(1000); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -127,7 +138,7 @@ LL | vec.set_len(10); = help: initialize the buffer or wrap the content in `MaybeUninit` error: calling `set_len()` immediately after reserving a buffer creates uninitialized values - --> tests/ui/uninit_vec.rs:178:9 + --> tests/ui/uninit_vec.rs:186:9 | LL | let mut vec: Vec> = Vec::with_capacity(1); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -138,7 +149,7 @@ LL | vec.set_len(1); = help: initialize the buffer or wrap the content in `MaybeUninit` error: calling `set_len()` immediately after reserving a buffer creates uninitialized values - --> tests/ui/uninit_vec.rs:192:9 + --> tests/ui/uninit_vec.rs:200:9 | LL | let mut vec: Vec> = Vec::with_capacity(1); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -148,5 +159,5 @@ LL | vec.set_len(1); | = help: initialize the buffer or wrap the content in `MaybeUninit` -error: aborting due to 14 previous errors +error: aborting due to 15 previous errors diff --git a/tests/ui/unnecessary_cast_unfixable.rs b/tests/ui/unnecessary_cast_unfixable.rs index 2bb64c3e80e34..4b1f4f76cc45e 100644 --- a/tests/ui/unnecessary_cast_unfixable.rs +++ b/tests/ui/unnecessary_cast_unfixable.rs @@ -17,8 +17,10 @@ mod issue11113 { impl TearOff { unsafe fn query(&self) { - ((*(*(self.object as *mut *mut _) as *mut Vtbl)).query)() - //~^ unnecessary_cast + unsafe { + ((*(*(self.object as *mut *mut _) as *mut Vtbl)).query)() + //~^ unnecessary_cast + } } } } diff --git a/tests/ui/unnecessary_cast_unfixable.stderr b/tests/ui/unnecessary_cast_unfixable.stderr index 6ba1c78730667..6b26bea9de2a7 100644 --- a/tests/ui/unnecessary_cast_unfixable.stderr +++ b/tests/ui/unnecessary_cast_unfixable.stderr @@ -8,10 +8,10 @@ LL | let _ = std::ptr::null() as *const u8; = help: to override `-D warnings` add `#[allow(clippy::unnecessary_cast)]` error: casting raw pointers to the same type and constness is unnecessary (`*mut issue11113::Vtbl` -> `*mut issue11113::Vtbl`) - --> tests/ui/unnecessary_cast_unfixable.rs:20:16 + --> tests/ui/unnecessary_cast_unfixable.rs:21:20 | -LL | ((*(*(self.object as *mut *mut _) as *mut Vtbl)).query)() - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `*(self.object as *mut *mut _)` +LL | ((*(*(self.object as *mut *mut _) as *mut Vtbl)).query)() + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `*(self.object as *mut *mut _)` error: aborting due to 2 previous errors diff --git a/tests/ui/unnecessary_filter_map.rs b/tests/ui/unnecessary_filter_map.rs index c4f1b6bc7e3d7..85582c399ce5f 100644 --- a/tests/ui/unnecessary_filter_map.rs +++ b/tests/ui/unnecessary_filter_map.rs @@ -1,5 +1,4 @@ -//@no-rustfix -#![allow(dead_code)] +#![allow(clippy::redundant_closure)] fn main() { let _ = (0..4).filter_map(|x| if x > 1 { Some(x) } else { None }); @@ -27,9 +26,7 @@ fn main() { let _ = (0..4).filter_map(Some); let _ = vec![Some(10), None].into_iter().filter_map(|x| Some(x)); - //~^ redundant_closure - //~| unnecessary_filter_map - //~| unnecessary_filter_map + //~^ unnecessary_filter_map } fn filter_map_none_changes_item_type() -> impl Iterator { diff --git a/tests/ui/unnecessary_filter_map.stderr b/tests/ui/unnecessary_filter_map.stderr index 6683444b72730..a879633e10f2a 100644 --- a/tests/ui/unnecessary_filter_map.stderr +++ b/tests/ui/unnecessary_filter_map.stderr @@ -1,14 +1,14 @@ -error: this `.filter_map` can be written more simply - --> tests/ui/unnecessary_filter_map.rs:5:13 +error: this `.filter_map(..)` can be written more simply using `.filter(..)` + --> tests/ui/unnecessary_filter_map.rs:4:13 | LL | let _ = (0..4).filter_map(|x| if x > 1 { Some(x) } else { None }); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try instead: `filter` + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: `-D clippy::unnecessary-filter-map` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::unnecessary_filter_map)]` -error: this `.filter_map` can be written more simply - --> tests/ui/unnecessary_filter_map.rs:8:13 +error: this `.filter_map(..)` can be written more simply using `.filter(..)` + --> tests/ui/unnecessary_filter_map.rs:7:13 | LL | let _ = (0..4).filter_map(|x| { | _____________^ @@ -18,10 +18,10 @@ LL | | if x > 1 { ... | LL | | None LL | | }); - | |______^ help: try instead: `filter` + | |______^ -error: this `.filter_map` can be written more simply - --> tests/ui/unnecessary_filter_map.rs:16:13 +error: this `.filter_map(..)` can be written more simply using `.filter(..)` + --> tests/ui/unnecessary_filter_map.rs:15:13 | LL | let _ = (0..4).filter_map(|x| match x { | _____________^ @@ -29,40 +29,25 @@ LL | | LL | | 0 | 1 => None, LL | | _ => Some(x), LL | | }); - | |______^ help: try instead: `filter` + | |______^ -error: this `.filter_map` can be written more simply - --> tests/ui/unnecessary_filter_map.rs:22:13 +error: this `.filter_map(..)` can be written more simply using `.map(..)` + --> tests/ui/unnecessary_filter_map.rs:21:13 | LL | let _ = (0..4).filter_map(|x| Some(x + 1)); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try instead: `map` + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -error: redundant closure - --> tests/ui/unnecessary_filter_map.rs:29:57 +error: this call to `.filter_map(..)` is unnecessary + --> tests/ui/unnecessary_filter_map.rs:28:61 | LL | let _ = vec![Some(10), None].into_iter().filter_map(|x| Some(x)); - | ^^^^^^^^^^^ help: replace the closure with the function itself: `Some` - | - = note: `-D clippy::redundant-closure` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::redundant_closure)]` - -error: filter_map is unnecessary - --> tests/ui/unnecessary_filter_map.rs:29:61 - | -LL | let _ = vec![Some(10), None].into_iter().filter_map(|x| Some(x)); - | ^^^^ help: try removing the filter_map - -error: this `.filter_map` can be written more simply - --> tests/ui/unnecessary_filter_map.rs:29:13 - | -LL | let _ = vec![Some(10), None].into_iter().filter_map(|x| Some(x)); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try instead: `map` + | ^^^^ -error: this `.filter_map` can be written more simply - --> tests/ui/unnecessary_filter_map.rs:169:14 +error: this `.filter_map(..)` can be written more simply using `.filter(..)` + --> tests/ui/unnecessary_filter_map.rs:166:14 | LL | let _x = std::iter::once(1).filter_map(|n| (n > 1).then_some(n)); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try instead: `filter` + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -error: aborting due to 8 previous errors +error: aborting due to 6 previous errors diff --git a/tests/ui/unnecessary_find_map.rs b/tests/ui/unnecessary_find_map.rs index 8c8a3799f0216..33ba7074d623b 100644 --- a/tests/ui/unnecessary_find_map.rs +++ b/tests/ui/unnecessary_find_map.rs @@ -1,4 +1,3 @@ -//@no-rustfix #![allow(dead_code)] fn main() { diff --git a/tests/ui/unnecessary_find_map.stderr b/tests/ui/unnecessary_find_map.stderr index 94e320773a6fe..3754a3d99538e 100644 --- a/tests/ui/unnecessary_find_map.stderr +++ b/tests/ui/unnecessary_find_map.stderr @@ -1,14 +1,14 @@ -error: this `.find_map` can be written more simply - --> tests/ui/unnecessary_find_map.rs:5:13 +error: this `.find_map(..)` can be written more simply using `.find(..)` + --> tests/ui/unnecessary_find_map.rs:4:13 | LL | let _ = (0..4).find_map(|x| if x > 1 { Some(x) } else { None }); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try instead: `find` + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: `-D clippy::unnecessary-find-map` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::unnecessary_find_map)]` -error: this `.find_map` can be written more simply - --> tests/ui/unnecessary_find_map.rs:8:13 +error: this `.find_map(..)` can be written more simply using `.find(..)` + --> tests/ui/unnecessary_find_map.rs:7:13 | LL | let _ = (0..4).find_map(|x| { | _____________^ @@ -18,10 +18,10 @@ LL | | if x > 1 { ... | LL | | None LL | | }); - | |______^ help: try instead: `find` + | |______^ -error: this `.find_map` can be written more simply - --> tests/ui/unnecessary_find_map.rs:16:13 +error: this `.find_map(..)` can be written more simply using `.find(..)` + --> tests/ui/unnecessary_find_map.rs:15:13 | LL | let _ = (0..4).find_map(|x| match x { | _____________^ @@ -29,19 +29,19 @@ LL | | LL | | 0 | 1 => None, LL | | _ => Some(x), LL | | }); - | |______^ help: try instead: `find` + | |______^ -error: this `.find_map` can be written more simply - --> tests/ui/unnecessary_find_map.rs:22:13 +error: this `.find_map(..)` can be written more simply using `.map(..).next()` + --> tests/ui/unnecessary_find_map.rs:21:13 | LL | let _ = (0..4).find_map(|x| Some(x + 1)); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try instead: `map(..).next()` + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -error: this `.find_map` can be written more simply - --> tests/ui/unnecessary_find_map.rs:34:14 +error: this `.find_map(..)` can be written more simply using `.find(..)` + --> tests/ui/unnecessary_find_map.rs:33:14 | LL | let _x = std::iter::once(1).find_map(|n| (n > 1).then_some(n)); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try instead: `find` + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: aborting due to 5 previous errors diff --git a/tests/ui/unnecessary_iter_cloned.fixed b/tests/ui/unnecessary_iter_cloned.fixed index aed2dbe1f1ce4..61f2e3745ad05 100644 --- a/tests/ui/unnecessary_iter_cloned.fixed +++ b/tests/ui/unnecessary_iter_cloned.fixed @@ -1,4 +1,4 @@ -#![allow(unused_assignments)] +#![allow(unused_assignments, clippy::uninlined_format_args)] #![warn(clippy::unnecessary_to_owned)] #[allow(dead_code)] diff --git a/tests/ui/unnecessary_iter_cloned.rs b/tests/ui/unnecessary_iter_cloned.rs index 12fdd150e4233..b90ca00a5fece 100644 --- a/tests/ui/unnecessary_iter_cloned.rs +++ b/tests/ui/unnecessary_iter_cloned.rs @@ -1,4 +1,4 @@ -#![allow(unused_assignments)] +#![allow(unused_assignments, clippy::uninlined_format_args)] #![warn(clippy::unnecessary_to_owned)] #[allow(dead_code)] diff --git a/tests/ui/unnecessary_lazy_eval.fixed b/tests/ui/unnecessary_lazy_eval.fixed index 9a32908163897..409a8efbfeb95 100644 --- a/tests/ui/unnecessary_lazy_eval.fixed +++ b/tests/ui/unnecessary_lazy_eval.fixed @@ -321,3 +321,7 @@ fn panicky_arithmetic_ops(x: usize, y: isize) { let _x = false.then_some(f1 + f2); //~^ unnecessary_lazy_evaluations } + +fn issue14578() { + let _: Box> = Box::new(true.then(async || 42).unwrap()); +} diff --git a/tests/ui/unnecessary_lazy_eval.rs b/tests/ui/unnecessary_lazy_eval.rs index 2d05ef5c29175..54735023a935d 100644 --- a/tests/ui/unnecessary_lazy_eval.rs +++ b/tests/ui/unnecessary_lazy_eval.rs @@ -321,3 +321,7 @@ fn panicky_arithmetic_ops(x: usize, y: isize) { let _x = false.then(|| f1 + f2); //~^ unnecessary_lazy_evaluations } + +fn issue14578() { + let _: Box> = Box::new(true.then(async || 42).unwrap()); +} diff --git a/tests/ui/unnecessary_operation.fixed b/tests/ui/unnecessary_operation.fixed index 05dfb72f48d2d..645b56fe95e74 100644 --- a/tests/ui/unnecessary_operation.fixed +++ b/tests/ui/unnecessary_operation.fixed @@ -1,9 +1,10 @@ #![allow( clippy::deref_addrof, - dead_code, - unused, clippy::no_effect, - clippy::unnecessary_struct_initialization + clippy::uninlined_format_args, + clippy::unnecessary_struct_initialization, + dead_code, + unused )] #![warn(clippy::unnecessary_operation)] diff --git a/tests/ui/unnecessary_operation.rs b/tests/ui/unnecessary_operation.rs index 6ef74c3eb1c1e..97e90269c5c0c 100644 --- a/tests/ui/unnecessary_operation.rs +++ b/tests/ui/unnecessary_operation.rs @@ -1,9 +1,10 @@ #![allow( clippy::deref_addrof, - dead_code, - unused, clippy::no_effect, - clippy::unnecessary_struct_initialization + clippy::uninlined_format_args, + clippy::unnecessary_struct_initialization, + dead_code, + unused )] #![warn(clippy::unnecessary_operation)] diff --git a/tests/ui/unnecessary_operation.stderr b/tests/ui/unnecessary_operation.stderr index eb98af09e7a3d..0fda1dfde1903 100644 --- a/tests/ui/unnecessary_operation.stderr +++ b/tests/ui/unnecessary_operation.stderr @@ -1,5 +1,5 @@ error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:70:5 + --> tests/ui/unnecessary_operation.rs:71:5 | LL | Tuple(get_number()); | ^^^^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `get_number();` @@ -8,103 +8,103 @@ LL | Tuple(get_number()); = help: to override `-D warnings` add `#[allow(clippy::unnecessary_operation)]` error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:72:5 + --> tests/ui/unnecessary_operation.rs:73:5 | LL | Struct { field: get_number() }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `get_number();` error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:74:5 + --> tests/ui/unnecessary_operation.rs:75:5 | LL | Struct { ..get_struct() }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `get_struct();` error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:76:5 + --> tests/ui/unnecessary_operation.rs:77:5 | LL | Enum::Tuple(get_number()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `get_number();` error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:78:5 + --> tests/ui/unnecessary_operation.rs:79:5 | LL | Enum::Struct { field: get_number() }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `get_number();` error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:80:5 + --> tests/ui/unnecessary_operation.rs:81:5 | LL | 5 + get_number(); | ^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `5;get_number();` error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:82:5 + --> tests/ui/unnecessary_operation.rs:83:5 | LL | *&get_number(); | ^^^^^^^^^^^^^^^ help: statement can be reduced to: `get_number();` error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:84:5 + --> tests/ui/unnecessary_operation.rs:85:5 | LL | &get_number(); | ^^^^^^^^^^^^^^ help: statement can be reduced to: `get_number();` error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:86:5 + --> tests/ui/unnecessary_operation.rs:87:5 | LL | (5, 6, get_number()); | ^^^^^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `5;6;get_number();` error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:88:5 + --> tests/ui/unnecessary_operation.rs:89:5 | LL | get_number()..; | ^^^^^^^^^^^^^^^ help: statement can be reduced to: `get_number();` error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:90:5 + --> tests/ui/unnecessary_operation.rs:91:5 | LL | ..get_number(); | ^^^^^^^^^^^^^^^ help: statement can be reduced to: `get_number();` error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:92:5 + --> tests/ui/unnecessary_operation.rs:93:5 | LL | 5..get_number(); | ^^^^^^^^^^^^^^^^ help: statement can be reduced to: `5;get_number();` error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:94:5 + --> tests/ui/unnecessary_operation.rs:95:5 | LL | [42, get_number()]; | ^^^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `42;get_number();` error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:96:5 + --> tests/ui/unnecessary_operation.rs:97:5 | LL | [42, 55][get_usize()]; | ^^^^^^^^^^^^^^^^^^^^^^ help: statement can be written as: `assert!([42, 55].len() > get_usize());` error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:98:5 + --> tests/ui/unnecessary_operation.rs:99:5 | LL | (42, get_number()).1; | ^^^^^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `42;get_number();` error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:100:5 + --> tests/ui/unnecessary_operation.rs:101:5 | LL | [get_number(); 55]; | ^^^^^^^^^^^^^^^^^^^ help: statement can be reduced to: `get_number();` error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:102:5 + --> tests/ui/unnecessary_operation.rs:103:5 | LL | [42; 55][get_usize()]; | ^^^^^^^^^^^^^^^^^^^^^^ help: statement can be written as: `assert!([42; 55].len() > get_usize());` error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:104:5 + --> tests/ui/unnecessary_operation.rs:105:5 | LL | / { LL | | @@ -113,7 +113,7 @@ LL | | }; | |______^ help: statement can be reduced to: `get_number();` error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:108:5 + --> tests/ui/unnecessary_operation.rs:109:5 | LL | / FooString { LL | | @@ -122,7 +122,7 @@ LL | | }; | |______^ help: statement can be reduced to: `String::from("blah");` error: unnecessary operation - --> tests/ui/unnecessary_operation.rs:149:5 + --> tests/ui/unnecessary_operation.rs:150:5 | LL | [42, 55][get_usize()]; | ^^^^^^^^^^^^^^^^^^^^^^ help: statement can be written as: `assert!([42, 55].len() > get_usize());` diff --git a/tests/ui/unnecessary_os_str_debug_formatting.rs b/tests/ui/unnecessary_os_str_debug_formatting.rs index 12663ec9a528f..6652efd9ae1d8 100644 --- a/tests/ui/unnecessary_os_str_debug_formatting.rs +++ b/tests/ui/unnecessary_os_str_debug_formatting.rs @@ -1,4 +1,5 @@ #![warn(clippy::unnecessary_debug_formatting)] +#![allow(clippy::uninlined_format_args)] use std::ffi::{OsStr, OsString}; diff --git a/tests/ui/unnecessary_os_str_debug_formatting.stderr b/tests/ui/unnecessary_os_str_debug_formatting.stderr index 001309ab817a1..382e59b046193 100644 --- a/tests/ui/unnecessary_os_str_debug_formatting.stderr +++ b/tests/ui/unnecessary_os_str_debug_formatting.stderr @@ -1,5 +1,5 @@ error: unnecessary `Debug` formatting in `println!` args - --> tests/ui/unnecessary_os_str_debug_formatting.rs:14:22 + --> tests/ui/unnecessary_os_str_debug_formatting.rs:15:22 | LL | println!("{:?}", os_str); | ^^^^^^ @@ -10,7 +10,7 @@ LL | println!("{:?}", os_str); = help: to override `-D warnings` add `#[allow(clippy::unnecessary_debug_formatting)]` error: unnecessary `Debug` formatting in `println!` args - --> tests/ui/unnecessary_os_str_debug_formatting.rs:15:22 + --> tests/ui/unnecessary_os_str_debug_formatting.rs:16:22 | LL | println!("{:?}", os_string); | ^^^^^^^^^ @@ -19,7 +19,7 @@ LL | println!("{:?}", os_string); = note: switching to `Display` formatting will change how the value is shown; escaped characters will no longer be escaped and surrounding quotes will be removed error: unnecessary `Debug` formatting in `println!` args - --> tests/ui/unnecessary_os_str_debug_formatting.rs:17:16 + --> tests/ui/unnecessary_os_str_debug_formatting.rs:18:16 | LL | println!("{os_str:?}"); | ^^^^^^ @@ -28,7 +28,7 @@ LL | println!("{os_str:?}"); = note: switching to `Display` formatting will change how the value is shown; escaped characters will no longer be escaped and surrounding quotes will be removed error: unnecessary `Debug` formatting in `println!` args - --> tests/ui/unnecessary_os_str_debug_formatting.rs:18:16 + --> tests/ui/unnecessary_os_str_debug_formatting.rs:19:16 | LL | println!("{os_string:?}"); | ^^^^^^^^^ @@ -37,7 +37,7 @@ LL | println!("{os_string:?}"); = note: switching to `Display` formatting will change how the value is shown; escaped characters will no longer be escaped and surrounding quotes will be removed error: unnecessary `Debug` formatting in `format!` args - --> tests/ui/unnecessary_os_str_debug_formatting.rs:20:37 + --> tests/ui/unnecessary_os_str_debug_formatting.rs:21:37 | LL | let _: String = format!("{:?}", os_str); | ^^^^^^ @@ -46,7 +46,7 @@ LL | let _: String = format!("{:?}", os_str); = note: switching to `Display` formatting will change how the value is shown; escaped characters will no longer be escaped and surrounding quotes will be removed error: unnecessary `Debug` formatting in `format!` args - --> tests/ui/unnecessary_os_str_debug_formatting.rs:21:37 + --> tests/ui/unnecessary_os_str_debug_formatting.rs:22:37 | LL | let _: String = format!("{:?}", os_string); | ^^^^^^^^^ diff --git a/tests/ui/unnecessary_path_debug_formatting.rs b/tests/ui/unnecessary_path_debug_formatting.rs index f14f6085c9a14..215e0d5d7802e 100644 --- a/tests/ui/unnecessary_path_debug_formatting.rs +++ b/tests/ui/unnecessary_path_debug_formatting.rs @@ -1,4 +1,5 @@ #![warn(clippy::unnecessary_debug_formatting)] +#![allow(clippy::uninlined_format_args)] use std::ffi::{OsStr, OsString}; use std::ops::Deref; diff --git a/tests/ui/unnecessary_path_debug_formatting.stderr b/tests/ui/unnecessary_path_debug_formatting.stderr index f12fa72c84b35..d244b9ad6716a 100644 --- a/tests/ui/unnecessary_path_debug_formatting.stderr +++ b/tests/ui/unnecessary_path_debug_formatting.stderr @@ -1,5 +1,5 @@ error: unnecessary `Debug` formatting in `println!` args - --> tests/ui/unnecessary_path_debug_formatting.rs:29:22 + --> tests/ui/unnecessary_path_debug_formatting.rs:30:22 | LL | println!("{:?}", os_str); | ^^^^^^ @@ -10,7 +10,7 @@ LL | println!("{:?}", os_str); = help: to override `-D warnings` add `#[allow(clippy::unnecessary_debug_formatting)]` error: unnecessary `Debug` formatting in `println!` args - --> tests/ui/unnecessary_path_debug_formatting.rs:30:22 + --> tests/ui/unnecessary_path_debug_formatting.rs:31:22 | LL | println!("{:?}", os_string); | ^^^^^^^^^ @@ -19,7 +19,7 @@ LL | println!("{:?}", os_string); = note: switching to `Display` formatting will change how the value is shown; escaped characters will no longer be escaped and surrounding quotes will be removed error: unnecessary `Debug` formatting in `println!` args - --> tests/ui/unnecessary_path_debug_formatting.rs:32:22 + --> tests/ui/unnecessary_path_debug_formatting.rs:33:22 | LL | println!("{:?}", path); | ^^^^ @@ -28,7 +28,7 @@ LL | println!("{:?}", path); = note: switching to `Display` formatting will change how the value is shown; escaped characters will no longer be escaped and surrounding quotes will be removed error: unnecessary `Debug` formatting in `println!` args - --> tests/ui/unnecessary_path_debug_formatting.rs:33:22 + --> tests/ui/unnecessary_path_debug_formatting.rs:34:22 | LL | println!("{:?}", path_buf); | ^^^^^^^^ @@ -37,7 +37,7 @@ LL | println!("{:?}", path_buf); = note: switching to `Display` formatting will change how the value is shown; escaped characters will no longer be escaped and surrounding quotes will be removed error: unnecessary `Debug` formatting in `println!` args - --> tests/ui/unnecessary_path_debug_formatting.rs:35:16 + --> tests/ui/unnecessary_path_debug_formatting.rs:36:16 | LL | println!("{path:?}"); | ^^^^ @@ -46,7 +46,7 @@ LL | println!("{path:?}"); = note: switching to `Display` formatting will change how the value is shown; escaped characters will no longer be escaped and surrounding quotes will be removed error: unnecessary `Debug` formatting in `println!` args - --> tests/ui/unnecessary_path_debug_formatting.rs:36:16 + --> tests/ui/unnecessary_path_debug_formatting.rs:37:16 | LL | println!("{path_buf:?}"); | ^^^^^^^^ @@ -55,7 +55,7 @@ LL | println!("{path_buf:?}"); = note: switching to `Display` formatting will change how the value is shown; escaped characters will no longer be escaped and surrounding quotes will be removed error: unnecessary `Debug` formatting in `format!` args - --> tests/ui/unnecessary_path_debug_formatting.rs:38:37 + --> tests/ui/unnecessary_path_debug_formatting.rs:39:37 | LL | let _: String = format!("{:?}", path); | ^^^^ @@ -64,7 +64,7 @@ LL | let _: String = format!("{:?}", path); = note: switching to `Display` formatting will change how the value is shown; escaped characters will no longer be escaped and surrounding quotes will be removed error: unnecessary `Debug` formatting in `format!` args - --> tests/ui/unnecessary_path_debug_formatting.rs:39:37 + --> tests/ui/unnecessary_path_debug_formatting.rs:40:37 | LL | let _: String = format!("{:?}", path_buf); | ^^^^^^^^ @@ -73,7 +73,7 @@ LL | let _: String = format!("{:?}", path_buf); = note: switching to `Display` formatting will change how the value is shown; escaped characters will no longer be escaped and surrounding quotes will be removed error: unnecessary `Debug` formatting in `println!` args - --> tests/ui/unnecessary_path_debug_formatting.rs:42:22 + --> tests/ui/unnecessary_path_debug_formatting.rs:43:22 | LL | println!("{:?}", &*deref_path); | ^^^^^^^^^^^^ diff --git a/tests/ui/unnecessary_to_owned.fixed b/tests/ui/unnecessary_to_owned.fixed index 5410033dbd8f4..b064a8b8f46fb 100644 --- a/tests/ui/unnecessary_to_owned.fixed +++ b/tests/ui/unnecessary_to_owned.fixed @@ -1,10 +1,11 @@ #![allow( + clippy::manual_async_fn, clippy::needless_borrow, clippy::needless_borrows_for_generic_args, - clippy::ptr_arg, - clippy::manual_async_fn, clippy::needless_lifetimes, - clippy::owned_cow + clippy::owned_cow, + clippy::ptr_arg, + clippy::uninlined_format_args )] #![warn(clippy::unnecessary_to_owned, clippy::redundant_clone)] diff --git a/tests/ui/unnecessary_to_owned.rs b/tests/ui/unnecessary_to_owned.rs index 0619dd4ddec09..7954a4ad4ce77 100644 --- a/tests/ui/unnecessary_to_owned.rs +++ b/tests/ui/unnecessary_to_owned.rs @@ -1,10 +1,11 @@ #![allow( + clippy::manual_async_fn, clippy::needless_borrow, clippy::needless_borrows_for_generic_args, - clippy::ptr_arg, - clippy::manual_async_fn, clippy::needless_lifetimes, - clippy::owned_cow + clippy::owned_cow, + clippy::ptr_arg, + clippy::uninlined_format_args )] #![warn(clippy::unnecessary_to_owned, clippy::redundant_clone)] diff --git a/tests/ui/unnecessary_to_owned.stderr b/tests/ui/unnecessary_to_owned.stderr index 8926db34da8c8..6c52be8393010 100644 --- a/tests/ui/unnecessary_to_owned.stderr +++ b/tests/ui/unnecessary_to_owned.stderr @@ -1,11 +1,11 @@ error: redundant clone - --> tests/ui/unnecessary_to_owned.rs:217:64 + --> tests/ui/unnecessary_to_owned.rs:218:64 | LL | require_c_str(&CString::from_vec_with_nul(vec![0]).unwrap().to_owned()); | ^^^^^^^^^^^ help: remove this | note: this value is dropped without further use - --> tests/ui/unnecessary_to_owned.rs:217:20 + --> tests/ui/unnecessary_to_owned.rs:218:20 | LL | require_c_str(&CString::from_vec_with_nul(vec![0]).unwrap().to_owned()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -13,55 +13,55 @@ LL | require_c_str(&CString::from_vec_with_nul(vec![0]).unwrap().to_owned()) = help: to override `-D warnings` add `#[allow(clippy::redundant_clone)]` error: redundant clone - --> tests/ui/unnecessary_to_owned.rs:219:40 + --> tests/ui/unnecessary_to_owned.rs:220:40 | LL | require_os_str(&OsString::from("x").to_os_string()); | ^^^^^^^^^^^^^^^ help: remove this | note: this value is dropped without further use - --> tests/ui/unnecessary_to_owned.rs:219:21 + --> tests/ui/unnecessary_to_owned.rs:220:21 | LL | require_os_str(&OsString::from("x").to_os_string()); | ^^^^^^^^^^^^^^^^^^^ error: redundant clone - --> tests/ui/unnecessary_to_owned.rs:221:48 + --> tests/ui/unnecessary_to_owned.rs:222:48 | LL | require_path(&std::path::PathBuf::from("x").to_path_buf()); | ^^^^^^^^^^^^^^ help: remove this | note: this value is dropped without further use - --> tests/ui/unnecessary_to_owned.rs:221:19 + --> tests/ui/unnecessary_to_owned.rs:222:19 | LL | require_path(&std::path::PathBuf::from("x").to_path_buf()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: redundant clone - --> tests/ui/unnecessary_to_owned.rs:223:35 + --> tests/ui/unnecessary_to_owned.rs:224:35 | LL | require_str(&String::from("x").to_string()); | ^^^^^^^^^^^^ help: remove this | note: this value is dropped without further use - --> tests/ui/unnecessary_to_owned.rs:223:18 + --> tests/ui/unnecessary_to_owned.rs:224:18 | LL | require_str(&String::from("x").to_string()); | ^^^^^^^^^^^^^^^^^ error: redundant clone - --> tests/ui/unnecessary_to_owned.rs:225:39 + --> tests/ui/unnecessary_to_owned.rs:226:39 | LL | require_slice(&[String::from("x")].to_owned()); | ^^^^^^^^^^^ help: remove this | note: this value is dropped without further use - --> tests/ui/unnecessary_to_owned.rs:225:20 + --> tests/ui/unnecessary_to_owned.rs:226:20 | LL | require_slice(&[String::from("x")].to_owned()); | ^^^^^^^^^^^^^^^^^^^ error: unnecessary use of `into_owned` - --> tests/ui/unnecessary_to_owned.rs:65:36 + --> tests/ui/unnecessary_to_owned.rs:66:36 | LL | require_c_str(&Cow::from(c_str).into_owned()); | ^^^^^^^^^^^^^ help: remove this @@ -70,391 +70,391 @@ LL | require_c_str(&Cow::from(c_str).into_owned()); = help: to override `-D warnings` add `#[allow(clippy::unnecessary_to_owned)]` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:67:19 + --> tests/ui/unnecessary_to_owned.rs:68:19 | LL | require_c_str(&c_str.to_owned()); | ^^^^^^^^^^^^^^^^^ help: use: `c_str` error: unnecessary use of `to_os_string` - --> tests/ui/unnecessary_to_owned.rs:70:20 + --> tests/ui/unnecessary_to_owned.rs:71:20 | LL | require_os_str(&os_str.to_os_string()); | ^^^^^^^^^^^^^^^^^^^^^^ help: use: `os_str` error: unnecessary use of `into_owned` - --> tests/ui/unnecessary_to_owned.rs:72:38 + --> tests/ui/unnecessary_to_owned.rs:73:38 | LL | require_os_str(&Cow::from(os_str).into_owned()); | ^^^^^^^^^^^^^ help: remove this error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:74:20 + --> tests/ui/unnecessary_to_owned.rs:75:20 | LL | require_os_str(&os_str.to_owned()); | ^^^^^^^^^^^^^^^^^^ help: use: `os_str` error: unnecessary use of `to_path_buf` - --> tests/ui/unnecessary_to_owned.rs:77:18 + --> tests/ui/unnecessary_to_owned.rs:78:18 | LL | require_path(&path.to_path_buf()); | ^^^^^^^^^^^^^^^^^^^ help: use: `path` error: unnecessary use of `into_owned` - --> tests/ui/unnecessary_to_owned.rs:79:34 + --> tests/ui/unnecessary_to_owned.rs:80:34 | LL | require_path(&Cow::from(path).into_owned()); | ^^^^^^^^^^^^^ help: remove this error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:81:18 + --> tests/ui/unnecessary_to_owned.rs:82:18 | LL | require_path(&path.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `path` error: unnecessary use of `to_string` - --> tests/ui/unnecessary_to_owned.rs:84:17 + --> tests/ui/unnecessary_to_owned.rs:85:17 | LL | require_str(&s.to_string()); | ^^^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `into_owned` - --> tests/ui/unnecessary_to_owned.rs:86:30 + --> tests/ui/unnecessary_to_owned.rs:87:30 | LL | require_str(&Cow::from(s).into_owned()); | ^^^^^^^^^^^^^ help: remove this error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:88:17 + --> tests/ui/unnecessary_to_owned.rs:89:17 | LL | require_str(&s.to_owned()); | ^^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_string` - --> tests/ui/unnecessary_to_owned.rs:90:17 + --> tests/ui/unnecessary_to_owned.rs:91:17 | LL | require_str(&x_ref.to_string()); | ^^^^^^^^^^^^^^^^^^ help: use: `x_ref.as_ref()` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:93:19 + --> tests/ui/unnecessary_to_owned.rs:94:19 | LL | require_slice(&slice.to_vec()); | ^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `into_owned` - --> tests/ui/unnecessary_to_owned.rs:95:36 + --> tests/ui/unnecessary_to_owned.rs:96:36 | LL | require_slice(&Cow::from(slice).into_owned()); | ^^^^^^^^^^^^^ help: remove this error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:97:19 + --> tests/ui/unnecessary_to_owned.rs:98:19 | LL | require_slice(&array.to_owned()); | ^^^^^^^^^^^^^^^^^ help: use: `array.as_ref()` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:99:19 + --> tests/ui/unnecessary_to_owned.rs:100:19 | LL | require_slice(&array_ref.to_owned()); | ^^^^^^^^^^^^^^^^^^^^^ help: use: `array_ref.as_ref()` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:101:19 + --> tests/ui/unnecessary_to_owned.rs:102:19 | LL | require_slice(&slice.to_owned()); | ^^^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `into_owned` - --> tests/ui/unnecessary_to_owned.rs:105:42 + --> tests/ui/unnecessary_to_owned.rs:106:42 | LL | require_x(&Cow::::Owned(x.clone()).into_owned()); | ^^^^^^^^^^^^^ help: remove this error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:109:25 + --> tests/ui/unnecessary_to_owned.rs:110:25 | LL | require_deref_c_str(c_str.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `c_str` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:111:26 + --> tests/ui/unnecessary_to_owned.rs:112:26 | LL | require_deref_os_str(os_str.to_owned()); | ^^^^^^^^^^^^^^^^^ help: use: `os_str` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:113:24 + --> tests/ui/unnecessary_to_owned.rs:114:24 | LL | require_deref_path(path.to_owned()); | ^^^^^^^^^^^^^^^ help: use: `path` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:115:23 + --> tests/ui/unnecessary_to_owned.rs:116:23 | LL | require_deref_str(s.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:117:25 + --> tests/ui/unnecessary_to_owned.rs:118:25 | LL | require_deref_slice(slice.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:120:30 + --> tests/ui/unnecessary_to_owned.rs:121:30 | LL | require_impl_deref_c_str(c_str.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `c_str` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:122:31 + --> tests/ui/unnecessary_to_owned.rs:123:31 | LL | require_impl_deref_os_str(os_str.to_owned()); | ^^^^^^^^^^^^^^^^^ help: use: `os_str` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:124:29 + --> tests/ui/unnecessary_to_owned.rs:125:29 | LL | require_impl_deref_path(path.to_owned()); | ^^^^^^^^^^^^^^^ help: use: `path` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:126:28 + --> tests/ui/unnecessary_to_owned.rs:127:28 | LL | require_impl_deref_str(s.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:128:30 + --> tests/ui/unnecessary_to_owned.rs:129:30 | LL | require_impl_deref_slice(slice.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:131:29 + --> tests/ui/unnecessary_to_owned.rs:132:29 | LL | require_deref_str_slice(s.to_owned(), slice.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:131:43 + --> tests/ui/unnecessary_to_owned.rs:132:43 | LL | require_deref_str_slice(s.to_owned(), slice.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:134:29 + --> tests/ui/unnecessary_to_owned.rs:135:29 | LL | require_deref_slice_str(slice.to_owned(), s.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:134:47 + --> tests/ui/unnecessary_to_owned.rs:135:47 | LL | require_deref_slice_str(slice.to_owned(), s.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:138:26 + --> tests/ui/unnecessary_to_owned.rs:139:26 | LL | require_as_ref_c_str(c_str.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `c_str` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:140:27 + --> tests/ui/unnecessary_to_owned.rs:141:27 | LL | require_as_ref_os_str(os_str.to_owned()); | ^^^^^^^^^^^^^^^^^ help: use: `os_str` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:142:25 + --> tests/ui/unnecessary_to_owned.rs:143:25 | LL | require_as_ref_path(path.to_owned()); | ^^^^^^^^^^^^^^^ help: use: `path` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:144:24 + --> tests/ui/unnecessary_to_owned.rs:145:24 | LL | require_as_ref_str(s.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:146:24 + --> tests/ui/unnecessary_to_owned.rs:147:24 | LL | require_as_ref_str(x.to_owned()); | ^^^^^^^^^^^^ help: use: `&x` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:148:26 + --> tests/ui/unnecessary_to_owned.rs:149:26 | LL | require_as_ref_slice(array.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `array` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:150:26 + --> tests/ui/unnecessary_to_owned.rs:151:26 | LL | require_as_ref_slice(array_ref.to_owned()); | ^^^^^^^^^^^^^^^^^^^^ help: use: `array_ref` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:152:26 + --> tests/ui/unnecessary_to_owned.rs:153:26 | LL | require_as_ref_slice(slice.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:155:31 + --> tests/ui/unnecessary_to_owned.rs:156:31 | LL | require_impl_as_ref_c_str(c_str.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `c_str` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:157:32 + --> tests/ui/unnecessary_to_owned.rs:158:32 | LL | require_impl_as_ref_os_str(os_str.to_owned()); | ^^^^^^^^^^^^^^^^^ help: use: `os_str` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:159:30 + --> tests/ui/unnecessary_to_owned.rs:160:30 | LL | require_impl_as_ref_path(path.to_owned()); | ^^^^^^^^^^^^^^^ help: use: `path` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:161:29 + --> tests/ui/unnecessary_to_owned.rs:162:29 | LL | require_impl_as_ref_str(s.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:163:29 + --> tests/ui/unnecessary_to_owned.rs:164:29 | LL | require_impl_as_ref_str(x.to_owned()); | ^^^^^^^^^^^^ help: use: `&x` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:165:31 + --> tests/ui/unnecessary_to_owned.rs:166:31 | LL | require_impl_as_ref_slice(array.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `array` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:167:31 + --> tests/ui/unnecessary_to_owned.rs:168:31 | LL | require_impl_as_ref_slice(array_ref.to_owned()); | ^^^^^^^^^^^^^^^^^^^^ help: use: `array_ref` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:169:31 + --> tests/ui/unnecessary_to_owned.rs:170:31 | LL | require_impl_as_ref_slice(slice.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:172:30 + --> tests/ui/unnecessary_to_owned.rs:173:30 | LL | require_as_ref_str_slice(s.to_owned(), array.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:172:44 + --> tests/ui/unnecessary_to_owned.rs:173:44 | LL | require_as_ref_str_slice(s.to_owned(), array.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `array` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:175:30 + --> tests/ui/unnecessary_to_owned.rs:176:30 | LL | require_as_ref_str_slice(s.to_owned(), array_ref.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:175:44 + --> tests/ui/unnecessary_to_owned.rs:176:44 | LL | require_as_ref_str_slice(s.to_owned(), array_ref.to_owned()); | ^^^^^^^^^^^^^^^^^^^^ help: use: `array_ref` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:178:30 + --> tests/ui/unnecessary_to_owned.rs:179:30 | LL | require_as_ref_str_slice(s.to_owned(), slice.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:178:44 + --> tests/ui/unnecessary_to_owned.rs:179:44 | LL | require_as_ref_str_slice(s.to_owned(), slice.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:181:30 + --> tests/ui/unnecessary_to_owned.rs:182:30 | LL | require_as_ref_slice_str(array.to_owned(), s.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `array` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:181:48 + --> tests/ui/unnecessary_to_owned.rs:182:48 | LL | require_as_ref_slice_str(array.to_owned(), s.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:184:30 + --> tests/ui/unnecessary_to_owned.rs:185:30 | LL | require_as_ref_slice_str(array_ref.to_owned(), s.to_owned()); | ^^^^^^^^^^^^^^^^^^^^ help: use: `array_ref` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:184:52 + --> tests/ui/unnecessary_to_owned.rs:185:52 | LL | require_as_ref_slice_str(array_ref.to_owned(), s.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:187:30 + --> tests/ui/unnecessary_to_owned.rs:188:30 | LL | require_as_ref_slice_str(slice.to_owned(), s.to_owned()); | ^^^^^^^^^^^^^^^^ help: use: `slice` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:187:48 + --> tests/ui/unnecessary_to_owned.rs:188:48 | LL | require_as_ref_slice_str(slice.to_owned(), s.to_owned()); | ^^^^^^^^^^^^ help: use: `s` error: unnecessary use of `to_string` - --> tests/ui/unnecessary_to_owned.rs:191:20 + --> tests/ui/unnecessary_to_owned.rs:192:20 | LL | let _ = x.join(&x_ref.to_string()); | ^^^^^^^^^^^^^^^^^^ help: use: `x_ref` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:194:13 + --> tests/ui/unnecessary_to_owned.rs:195:13 | LL | let _ = slice.to_vec().into_iter(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `slice.iter().copied()` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:196:13 + --> tests/ui/unnecessary_to_owned.rs:197:13 | LL | let _ = slice.to_owned().into_iter(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `slice.iter().copied()` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:199:13 + --> tests/ui/unnecessary_to_owned.rs:200:13 | LL | let _ = IntoIterator::into_iter(slice.to_vec()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `slice.iter().copied()` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:201:13 + --> tests/ui/unnecessary_to_owned.rs:202:13 | LL | let _ = IntoIterator::into_iter(slice.to_owned()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `slice.iter().copied()` error: allocating a new `String` only to create a temporary `&str` from it - --> tests/ui/unnecessary_to_owned.rs:229:26 + --> tests/ui/unnecessary_to_owned.rs:230:26 | LL | let _ref_str: &str = &String::from_utf8(slice.to_vec()).expect("not UTF-8"); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -466,7 +466,7 @@ LL + let _ref_str: &str = core::str::from_utf8(&slice).expect("not UTF-8"); | error: allocating a new `String` only to create a temporary `&str` from it - --> tests/ui/unnecessary_to_owned.rs:231:26 + --> tests/ui/unnecessary_to_owned.rs:232:26 | LL | let _ref_str: &str = &String::from_utf8(b"foo".to_vec()).unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -478,7 +478,7 @@ LL + let _ref_str: &str = core::str::from_utf8(b"foo").unwrap(); | error: allocating a new `String` only to create a temporary `&str` from it - --> tests/ui/unnecessary_to_owned.rs:233:26 + --> tests/ui/unnecessary_to_owned.rs:234:26 | LL | let _ref_str: &str = &String::from_utf8(b"foo".as_slice().to_owned()).unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -490,7 +490,7 @@ LL + let _ref_str: &str = core::str::from_utf8(b"foo".as_slice()).unwrap(); | error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:291:14 + --> tests/ui/unnecessary_to_owned.rs:292:14 | LL | for t in file_types.to_vec() { | ^^^^^^^^^^^^^^^^^^^ @@ -503,49 +503,49 @@ LL ~ let path = match get_file_path(t) { | error: unnecessary use of `to_string` - --> tests/ui/unnecessary_to_owned.rs:357:24 + --> tests/ui/unnecessary_to_owned.rs:358:24 | LL | Box::new(build(y.to_string())) | ^^^^^^^^^^^^^ help: use: `y` error: unnecessary use of `to_string` - --> tests/ui/unnecessary_to_owned.rs:467:12 + --> tests/ui/unnecessary_to_owned.rs:468:12 | LL | id("abc".to_string()) | ^^^^^^^^^^^^^^^^^ help: use: `"abc"` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:611:37 + --> tests/ui/unnecessary_to_owned.rs:612:37 | LL | IntoFuture::into_future(foo([].to_vec(), &0)); | ^^^^^^^^^^^ help: use: `[]` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:622:18 + --> tests/ui/unnecessary_to_owned.rs:623:18 | LL | s.remove(&a.to_vec()); | ^^^^^^^^^^^ help: replace it with: `a` error: unnecessary use of `to_owned` - --> tests/ui/unnecessary_to_owned.rs:627:14 + --> tests/ui/unnecessary_to_owned.rs:628:14 | LL | s.remove(&"b".to_owned()); | ^^^^^^^^^^^^^^^ help: replace it with: `"b"` error: unnecessary use of `to_string` - --> tests/ui/unnecessary_to_owned.rs:629:14 + --> tests/ui/unnecessary_to_owned.rs:630:14 | LL | s.remove(&"b".to_string()); | ^^^^^^^^^^^^^^^^ help: replace it with: `"b"` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:635:14 + --> tests/ui/unnecessary_to_owned.rs:636:14 | LL | s.remove(&["b"].to_vec()); | ^^^^^^^^^^^^^^^ help: replace it with: `["b"].as_slice()` error: unnecessary use of `to_vec` - --> tests/ui/unnecessary_to_owned.rs:637:14 + --> tests/ui/unnecessary_to_owned.rs:638:14 | LL | s.remove(&(&["b"]).to_vec()); | ^^^^^^^^^^^^^^^^^^ help: replace it with: `(&["b"]).as_slice()` diff --git a/tests/ui/unnested_or_patterns.fixed b/tests/ui/unnested_or_patterns.fixed index 791b2fa131f23..2081772d06b36 100644 --- a/tests/ui/unnested_or_patterns.fixed +++ b/tests/ui/unnested_or_patterns.fixed @@ -64,3 +64,16 @@ fn msrv_1_53() { if let [1 | 53] = [0] {} //~^ unnested_or_patterns } + +mod issue9952 { + fn or_in_local() { + let (0 | 1 | _) = 0; + //~^ unnested_or_patterns + + if let (0 | 1 | _) = 0 {} + //~^ unnested_or_patterns + } + + fn or_in_param((x | x | x): i32) {} + //~^ unnested_or_patterns +} diff --git a/tests/ui/unnested_or_patterns.rs b/tests/ui/unnested_or_patterns.rs index e7e7c7cd2e494..6bf8fce36616c 100644 --- a/tests/ui/unnested_or_patterns.rs +++ b/tests/ui/unnested_or_patterns.rs @@ -64,3 +64,16 @@ fn msrv_1_53() { if let [1] | [53] = [0] {} //~^ unnested_or_patterns } + +mod issue9952 { + fn or_in_local() { + let (0 | (1 | _)) = 0; + //~^ unnested_or_patterns + + if let (0 | (1 | _)) = 0 {} + //~^ unnested_or_patterns + } + + fn or_in_param((x | (x | x)): i32) {} + //~^ unnested_or_patterns +} diff --git a/tests/ui/unnested_or_patterns.stderr b/tests/ui/unnested_or_patterns.stderr index ec5eb983c5a01..c805dc992b1c2 100644 --- a/tests/ui/unnested_or_patterns.stderr +++ b/tests/ui/unnested_or_patterns.stderr @@ -204,5 +204,41 @@ LL - if let [1] | [53] = [0] {} LL + if let [1 | 53] = [0] {} | -error: aborting due to 17 previous errors +error: unnested or-patterns + --> tests/ui/unnested_or_patterns.rs:70:13 + | +LL | let (0 | (1 | _)) = 0; + | ^^^^^^^^^^^^^ + | +help: nest the patterns + | +LL - let (0 | (1 | _)) = 0; +LL + let (0 | 1 | _) = 0; + | + +error: unnested or-patterns + --> tests/ui/unnested_or_patterns.rs:73:16 + | +LL | if let (0 | (1 | _)) = 0 {} + | ^^^^^^^^^^^^^ + | +help: nest the patterns + | +LL - if let (0 | (1 | _)) = 0 {} +LL + if let (0 | 1 | _) = 0 {} + | + +error: unnested or-patterns + --> tests/ui/unnested_or_patterns.rs:77:20 + | +LL | fn or_in_param((x | (x | x)): i32) {} + | ^^^^^^^^^^^^^ + | +help: nest the patterns + | +LL - fn or_in_param((x | (x | x)): i32) {} +LL + fn or_in_param((x | x | x): i32) {} + | + +error: aborting due to 20 previous errors diff --git a/tests/ui/unwrap_or.fixed b/tests/ui/unwrap_or.fixed index c794ed577032d..e550484b5d9f0 100644 --- a/tests/ui/unwrap_or.fixed +++ b/tests/ui/unwrap_or.fixed @@ -1,4 +1,4 @@ -#![warn(clippy::all, clippy::or_fun_call)] +#![warn(clippy::or_fun_call)] #![allow(clippy::unnecessary_literal_unwrap)] fn main() { diff --git a/tests/ui/unwrap_or.rs b/tests/ui/unwrap_or.rs index 11a6883b7403f..cdd61ac898e6d 100644 --- a/tests/ui/unwrap_or.rs +++ b/tests/ui/unwrap_or.rs @@ -1,4 +1,4 @@ -#![warn(clippy::all, clippy::or_fun_call)] +#![warn(clippy::or_fun_call)] #![allow(clippy::unnecessary_literal_unwrap)] fn main() { diff --git a/tests/ui/used_underscore_items.rs b/tests/ui/used_underscore_items.rs index 3401df6ae7438..7e8289f1406ba 100644 --- a/tests/ui/used_underscore_items.rs +++ b/tests/ui/used_underscore_items.rs @@ -73,7 +73,7 @@ fn external_item_call() { // should not lint foreign functions. // issue #14156 -extern "C" { +unsafe extern "C" { pub fn _exit(code: i32) -> !; } diff --git a/triagebot.toml b/triagebot.toml index 33d3b0728f3d1..f27b109e99536 100644 --- a/triagebot.toml +++ b/triagebot.toml @@ -9,11 +9,32 @@ allow-unauthenticated = [ # See https://forge.rust-lang.org/triagebot/shortcuts.html [shortcut] +[merge-conflicts] + +[note] + +[canonicalize-issue-links] + +# Prevents mentions in commits to avoid users being spammed +[no-mentions] + # Have rustbot inform users about the *No Merge Policy* [no-merges] exclude_titles = ["Rustup"] # exclude syncs from rust-lang/rust labels = ["has-merge-commits", "S-waiting-on-author"] +[review-requested] +# Those labels are removed when PR author requests a review from an assignee +remove_labels = ["S-waiting-on-author"] +# Those labels are added when PR author requests a review from an assignee +add_labels = ["S-waiting-on-review"] + +[review-submitted] +# These labels are removed when a review is submitted. +review_labels = ["S-waiting-on-review"] +# This label is added when a review is submitted. +reviewed_label = "S-waiting-on-author" + [autolabel."S-waiting-on-review"] new_pr = true @@ -21,10 +42,12 @@ new_pr = true contributing_url = "https://github.com/rust-lang/rust-clippy/blob/master/CONTRIBUTING.md" users_on_vacation = [ "matthiaskrgr", + "samueltardieu", ] [assign.owners] "/.github" = ["@flip1995"] +"/triagebot.toml" = ["@flip1995"] "/book" = ["@flip1995"] "*" = [ "@Manishearth", @@ -34,4 +57,5 @@ users_on_vacation = [ "@Jarcho", "@blyxyas", "@y21", + "@samueltardieu", ] From bf713a0e78208889c666e3656b073a8971fd4dd2 Mon Sep 17 00:00:00 2001 From: Ada Alakbarova Date: Tue, 22 Apr 2025 23:51:42 +0200 Subject: [PATCH 24/90] style: pull one more `if` into the let-chain --- clippy_lints/src/types/vec_box.rs | 105 +++++++++++++++--------------- 1 file changed, 51 insertions(+), 54 deletions(-) diff --git a/clippy_lints/src/types/vec_box.rs b/clippy_lints/src/types/vec_box.rs index 769244c675e1b..f13042a6fa6bf 100644 --- a/clippy_lints/src/types/vec_box.rs +++ b/clippy_lints/src/types/vec_box.rs @@ -19,61 +19,58 @@ pub(super) fn check<'tcx>( def_id: DefId, box_size_threshold: u64, ) -> bool { - if cx.tcx.is_diagnostic_item(sym::Vec, def_id) { - if let Some(last) = last_path_segment(qpath).args - // Get the _ part of Vec<_> - && let Some(GenericArg::Type(ty)) = last.args.first() - // extract allocator from the Vec for later - && let vec_alloc_ty = last.args.get(1) - // ty is now _ at this point - && let TyKind::Path(ref ty_qpath) = ty.kind - && let res = cx.qpath_res(ty_qpath, ty.hir_id) - && let Some(def_id) = res.opt_def_id() - && Some(def_id) == cx.tcx.lang_items().owned_box() - // At this point, we know ty is Box, now get T - && let Some(last) = last_path_segment(ty_qpath).args - && let Some(GenericArg::Type(boxed_ty)) = last.args.first() - // extract allocator from the Box for later - && let boxed_alloc_ty = last.args.get(1) - // we don't expect to encounter `_` here so ignore `GenericArg::Infer` is okay - && let ty_ty = lower_ty(cx.tcx, boxed_ty.as_unambig_ty()) - && !ty_ty.has_escaping_bound_vars() - && ty_ty.is_sized(cx.tcx, cx.typing_env()) - && let Ok(ty_ty_size) = cx.layout_of(ty_ty).map(|l| l.size.bytes()) - && ty_ty_size < box_size_threshold - // https://github.com/rust-lang/rust-clippy/issues/7114 - && match (vec_alloc_ty, boxed_alloc_ty) { - (None, None) => true, - // this is in the event that we have something like - // Vec<_, Global>, in which case is equivalent to - // Vec<_> - (None, Some(GenericArg::Type(inner))) | (Some(GenericArg::Type(inner)), None) => { - if let TyKind::Path(path) = inner.kind - && let Some(did) = cx.qpath_res(&path, inner.hir_id).opt_def_id() { - cx.tcx.lang_items().get(LangItem::GlobalAlloc) == Some(did) - } else { - false - } - }, - (Some(GenericArg::Type(l)), Some(GenericArg::Type(r))) => - // we don't expect to encounter `_` here so ignore `GenericArg::Infer` is okay - lower_ty(cx.tcx, l.as_unambig_ty()) == lower_ty(cx.tcx, r.as_unambig_ty()), - _ => false - } - { - span_lint_and_sugg( - cx, - VEC_BOX, - hir_ty.span, - "`Vec` is already on the heap, the boxing is unnecessary", - "try", - format!("Vec<{}>", snippet(cx, boxed_ty.span, "..")), - Applicability::Unspecified, - ); - true - } else { - false + if cx.tcx.is_diagnostic_item(sym::Vec, def_id) + && let Some(last) = last_path_segment(qpath).args + // Get the _ part of Vec<_> + && let Some(GenericArg::Type(ty)) = last.args.first() + // extract allocator from the Vec for later + && let vec_alloc_ty = last.args.get(1) + // ty is now _ at this point + && let TyKind::Path(ref ty_qpath) = ty.kind + && let res = cx.qpath_res(ty_qpath, ty.hir_id) + && let Some(def_id) = res.opt_def_id() + && Some(def_id) == cx.tcx.lang_items().owned_box() + // At this point, we know ty is Box, now get T + && let Some(last) = last_path_segment(ty_qpath).args + && let Some(GenericArg::Type(boxed_ty)) = last.args.first() + // extract allocator from the Box for later + && let boxed_alloc_ty = last.args.get(1) + // we don't expect to encounter `_` here so ignore `GenericArg::Infer` is okay + && let ty_ty = lower_ty(cx.tcx, boxed_ty.as_unambig_ty()) + && !ty_ty.has_escaping_bound_vars() + && ty_ty.is_sized(cx.tcx, cx.typing_env()) + && let Ok(ty_ty_size) = cx.layout_of(ty_ty).map(|l| l.size.bytes()) + && ty_ty_size < box_size_threshold + // https://github.com/rust-lang/rust-clippy/issues/7114 + && match (vec_alloc_ty, boxed_alloc_ty) { + (None, None) => true, + // this is in the event that we have something like + // Vec<_, Global>, in which case is equivalent to + // Vec<_> + (None, Some(GenericArg::Type(inner))) | (Some(GenericArg::Type(inner)), None) => { + if let TyKind::Path(path) = inner.kind + && let Some(did) = cx.qpath_res(&path, inner.hir_id).opt_def_id() { + cx.tcx.lang_items().get(LangItem::GlobalAlloc) == Some(did) + } else { + false + } + }, + (Some(GenericArg::Type(l)), Some(GenericArg::Type(r))) => + // we don't expect to encounter `_` here so ignore `GenericArg::Infer` is okay + lower_ty(cx.tcx, l.as_unambig_ty()) == lower_ty(cx.tcx, r.as_unambig_ty()), + _ => false } + { + span_lint_and_sugg( + cx, + VEC_BOX, + hir_ty.span, + "`Vec` is already on the heap, the boxing is unnecessary", + "try", + format!("Vec<{}>", snippet(cx, boxed_ty.span, "..")), + Applicability::Unspecified, + ); + true } else { false } From 2304a9cb7638140bd839c3d8b001c77ca7c06f21 Mon Sep 17 00:00:00 2001 From: Ada Alakbarova Date: Wed, 23 Apr 2025 00:42:30 +0200 Subject: [PATCH 25/90] remove non-existent pathspec from pre-commit hook it was added back in 6035e050e83cc991f94797eef4d720c0b61d8955, at which time there were some files matching it, e.g. https://github.com/rust-lang/rust-clippy/blob/6035e050e83cc991f94797eef4d720c0b61d8955/clippy_lints/src/lib.deprecated.rs --- util/etc/pre-commit.sh | 1 - 1 file changed, 1 deletion(-) diff --git a/util/etc/pre-commit.sh b/util/etc/pre-commit.sh index 5dd2ba3d5f53b..528f8953b25d8 100755 --- a/util/etc/pre-commit.sh +++ b/util/etc/pre-commit.sh @@ -6,7 +6,6 @@ set -e # Update lints cargo dev update_lints git add clippy_lints/src/lib.rs -git add clippy_lints/src/lib.*.rs # Formatting: # Git will not automatically add the formatted code to the staged changes once From dd5948ccc2b10bee9dc3bef7595ea72fec366c86 Mon Sep 17 00:00:00 2001 From: Philipp Krones Date: Wed, 23 Apr 2025 10:51:22 +0200 Subject: [PATCH 26/90] Clippy: Fix doc issue --- clippy_utils/src/source.rs | 1 + 1 file changed, 1 insertion(+) diff --git a/clippy_utils/src/source.rs b/clippy_utils/src/source.rs index 3aa72cf5eaffd..8645d5730fedb 100644 --- a/clippy_utils/src/source.rs +++ b/clippy_utils/src/source.rs @@ -142,6 +142,7 @@ pub trait SpanRangeExt: SpanRange { map_range(cx.sess().source_map(), self.into_range(), f) } + #[allow(rustdoc::invalid_rust_codeblocks, reason = "The codeblock is intentionally broken")] /// Extends the range to include all preceding whitespace characters, unless there /// are non-whitespace characters left on the same line after `self`. /// From 36ae6575fd85dd6eb9a00e097e47b38fa25235a0 Mon Sep 17 00:00:00 2001 From: Artur Roos Date: Wed, 23 Apr 2025 14:31:34 +0300 Subject: [PATCH 27/90] Document breaking out of a named code block --- library/std/src/keyword_docs.rs | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/library/std/src/keyword_docs.rs b/library/std/src/keyword_docs.rs index c07c391892d80..b0e55c787250d 100644 --- a/library/std/src/keyword_docs.rs +++ b/library/std/src/keyword_docs.rs @@ -109,6 +109,33 @@ mod as_keyword {} /// println!("{result}"); /// ``` /// +/// It is also possible to exit from any *labelled* block returning the value early. +/// If no value specified `break;` returns `()`. +/// +/// ```rust +/// let inputs = vec!["Cow", "Cat", "Dog", "Snake", "Cod"]; +/// +/// let mut results = vec![]; +/// for input in inputs { +/// let result = 'filter: { +/// if input.len() > 3 { +/// break 'filter Err("Too long"); +/// }; +/// +/// if !input.contains("C") { +/// break 'filter Err("No Cs"); +/// }; +/// +/// Ok(input.to_uppercase()) +/// }; +/// +/// results.push(result); +/// } +/// +/// // [Ok("COW"), Ok("CAT"), Err("No Cs"), Err("Too long"), Ok("COD")] +/// println!("{:?}", results) +/// ``` +/// /// For more details consult the [Reference on "break expression"] and the [Reference on "break and /// loop values"]. /// From 7c5312bdab3ce012c136114559ba988bfad8ecc1 Mon Sep 17 00:00:00 2001 From: Alex Macleod Date: Wed, 23 Apr 2025 19:03:46 +0000 Subject: [PATCH 28/90] Reword `needless_question_mark` diagnostics and docs --- clippy_lints/src/needless_question_mark.rs | 70 +++++----- tests/ui/needless_question_mark.stderr | 148 ++++++++++++++++----- tests/ui/question_mark.fixed | 5 + tests/ui/question_mark.rs | 5 + tests/ui/question_mark.stderr | 20 +-- 5 files changed, 171 insertions(+), 77 deletions(-) diff --git a/clippy_lints/src/needless_question_mark.rs b/clippy_lints/src/needless_question_mark.rs index 72b0a80260e9f..2a2160c3be2d1 100644 --- a/clippy_lints/src/needless_question_mark.rs +++ b/clippy_lints/src/needless_question_mark.rs @@ -1,6 +1,5 @@ -use clippy_utils::diagnostics::span_lint_and_sugg; +use clippy_utils::diagnostics::span_lint_hir_and_then; use clippy_utils::path_res; -use clippy_utils::source::snippet; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; use rustc_hir::{Block, Body, Expr, ExprKind, LangItem, MatchSource, QPath}; @@ -9,52 +8,38 @@ use rustc_session::declare_lint_pass; declare_clippy_lint! { /// ### What it does - /// Suggests alternatives for useless applications of `?` in terminating expressions + /// Suggests replacing `Ok(x?)` or `Some(x?)` with `x` in return positions where the `?` operator + /// is not needed to convert the type of `x`. /// /// ### Why is this bad? /// There's no reason to use `?` to short-circuit when execution of the body will end there anyway. /// /// ### Example /// ```no_run - /// struct TO { - /// magic: Option, + /// # use std::num::ParseIntError; + /// fn f(s: &str) -> Option { + /// Some(s.find('x')?) /// } /// - /// fn f(to: TO) -> Option { - /// Some(to.magic?) + /// fn g(s: &str) -> Result { + /// Ok(s.parse()?) /// } - /// - /// struct TR { - /// magic: Result, - /// } - /// - /// fn g(tr: Result) -> Result { - /// tr.and_then(|t| Ok(t.magic?)) - /// } - /// /// ``` /// Use instead: /// ```no_run - /// struct TO { - /// magic: Option, + /// # use std::num::ParseIntError; + /// fn f(s: &str) -> Option { + /// s.find('x') /// } /// - /// fn f(to: TO) -> Option { - /// to.magic - /// } - /// - /// struct TR { - /// magic: Result, - /// } - /// - /// fn g(tr: Result) -> Result { - /// tr.and_then(|t| t.magic) + /// fn g(s: &str) -> Result { + /// s.parse() /// } /// ``` #[clippy::version = "1.51.0"] pub NEEDLESS_QUESTION_MARK, complexity, - "Suggest `value.inner_option` instead of `Some(value.inner_option?)`. The same goes for `Result`." + "using `Ok(x?)` or `Some(x?)` where `x` would be equivalent" } declare_lint_pass!(NeedlessQuestionMark => [NEEDLESS_QUESTION_MARK]); @@ -111,10 +96,10 @@ fn check(cx: &LateContext<'_>, expr: &Expr<'_>) { if let ExprKind::Call(path, [arg]) = expr.kind && let Res::Def(DefKind::Ctor(..), ctor_id) = path_res(cx, path) && let Some(variant_id) = cx.tcx.opt_parent(ctor_id) - && let sugg_remove = if cx.tcx.lang_items().option_some_variant() == Some(variant_id) { - "Some()" + && let variant = if cx.tcx.lang_items().option_some_variant() == Some(variant_id) { + "Some" } else if cx.tcx.lang_items().result_ok_variant() == Some(variant_id) { - "Ok()" + "Ok" } else { return; } @@ -126,14 +111,25 @@ fn check(cx: &LateContext<'_>, expr: &Expr<'_>) { && let inner_ty = cx.typeck_results().expr_ty(inner_expr) && expr_ty == inner_ty { - span_lint_and_sugg( + span_lint_hir_and_then( cx, NEEDLESS_QUESTION_MARK, + expr.hir_id, expr.span, - "question mark operator is useless here", - format!("try removing question mark and `{sugg_remove}`"), - format!("{}", snippet(cx, inner_expr.span, r#""...""#)), - Applicability::MachineApplicable, + format!("enclosing `{variant}` and `?` operator are unneeded"), + |diag| { + diag.multipart_suggestion( + format!("remove the enclosing `{variant}` and `?` operator"), + vec![ + (expr.span.until(inner_expr.span), String::new()), + ( + inner_expr.span.shrink_to_hi().to(expr.span.shrink_to_hi()), + String::new(), + ), + ], + Applicability::MachineApplicable, + ); + }, ); } } diff --git a/tests/ui/needless_question_mark.stderr b/tests/ui/needless_question_mark.stderr index 55da4f28976c1..8516cee48e679 100644 --- a/tests/ui/needless_question_mark.stderr +++ b/tests/ui/needless_question_mark.stderr @@ -1,100 +1,188 @@ -error: question mark operator is useless here +error: enclosing `Some` and `?` operator are unneeded --> tests/ui/needless_question_mark.rs:20:12 | LL | return Some(to.magic?); - | ^^^^^^^^^^^^^^^ help: try removing question mark and `Some()`: `to.magic` + | ^^^^^^^^^^^^^^^ | = note: `-D clippy::needless-question-mark` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::needless_question_mark)]` +help: remove the enclosing `Some` and `?` operator + | +LL - return Some(to.magic?); +LL + return to.magic; + | -error: question mark operator is useless here +error: enclosing `Some` and `?` operator are unneeded --> tests/ui/needless_question_mark.rs:29:12 | LL | return Some(to.magic?) - | ^^^^^^^^^^^^^^^ help: try removing question mark and `Some()`: `to.magic` + | ^^^^^^^^^^^^^^^ + | +help: remove the enclosing `Some` and `?` operator + | +LL - return Some(to.magic?) +LL + return to.magic + | -error: question mark operator is useless here +error: enclosing `Some` and `?` operator are unneeded --> tests/ui/needless_question_mark.rs:35:5 | LL | Some(to.magic?) - | ^^^^^^^^^^^^^^^ help: try removing question mark and `Some()`: `to.magic` + | ^^^^^^^^^^^^^^^ + | +help: remove the enclosing `Some` and `?` operator + | +LL - Some(to.magic?) +LL + to.magic + | -error: question mark operator is useless here +error: enclosing `Some` and `?` operator are unneeded --> tests/ui/needless_question_mark.rs:41:21 | LL | to.and_then(|t| Some(t.magic?)) - | ^^^^^^^^^^^^^^ help: try removing question mark and `Some()`: `t.magic` + | ^^^^^^^^^^^^^^ + | +help: remove the enclosing `Some` and `?` operator + | +LL - to.and_then(|t| Some(t.magic?)) +LL + to.and_then(|t| t.magic) + | -error: question mark operator is useless here +error: enclosing `Some` and `?` operator are unneeded --> tests/ui/needless_question_mark.rs:51:9 | LL | Some(t.magic?) - | ^^^^^^^^^^^^^^ help: try removing question mark and `Some()`: `t.magic` + | ^^^^^^^^^^^^^^ + | +help: remove the enclosing `Some` and `?` operator + | +LL - Some(t.magic?) +LL + t.magic + | -error: question mark operator is useless here +error: enclosing `Ok` and `?` operator are unneeded --> tests/ui/needless_question_mark.rs:57:12 | LL | return Ok(tr.magic?); - | ^^^^^^^^^^^^^ help: try removing question mark and `Ok()`: `tr.magic` + | ^^^^^^^^^^^^^ + | +help: remove the enclosing `Ok` and `?` operator + | +LL - return Ok(tr.magic?); +LL + return tr.magic; + | -error: question mark operator is useless here +error: enclosing `Ok` and `?` operator are unneeded --> tests/ui/needless_question_mark.rs:65:12 | LL | return Ok(tr.magic?) - | ^^^^^^^^^^^^^ help: try removing question mark and `Ok()`: `tr.magic` + | ^^^^^^^^^^^^^ + | +help: remove the enclosing `Ok` and `?` operator + | +LL - return Ok(tr.magic?) +LL + return tr.magic + | -error: question mark operator is useless here +error: enclosing `Ok` and `?` operator are unneeded --> tests/ui/needless_question_mark.rs:70:5 | LL | Ok(tr.magic?) - | ^^^^^^^^^^^^^ help: try removing question mark and `Ok()`: `tr.magic` + | ^^^^^^^^^^^^^ + | +help: remove the enclosing `Ok` and `?` operator + | +LL - Ok(tr.magic?) +LL + tr.magic + | -error: question mark operator is useless here +error: enclosing `Ok` and `?` operator are unneeded --> tests/ui/needless_question_mark.rs:75:21 | LL | tr.and_then(|t| Ok(t.magic?)) - | ^^^^^^^^^^^^ help: try removing question mark and `Ok()`: `t.magic` + | ^^^^^^^^^^^^ + | +help: remove the enclosing `Ok` and `?` operator + | +LL - tr.and_then(|t| Ok(t.magic?)) +LL + tr.and_then(|t| t.magic) + | -error: question mark operator is useless here +error: enclosing `Ok` and `?` operator are unneeded --> tests/ui/needless_question_mark.rs:84:9 | LL | Ok(t.magic?) - | ^^^^^^^^^^^^ help: try removing question mark and `Ok()`: `t.magic` + | ^^^^^^^^^^^^ + | +help: remove the enclosing `Ok` and `?` operator + | +LL - Ok(t.magic?) +LL + t.magic + | -error: question mark operator is useless here +error: enclosing `Ok` and `?` operator are unneeded --> tests/ui/needless_question_mark.rs:92:16 | LL | return Ok(t.magic?); - | ^^^^^^^^^^^^ help: try removing question mark and `Ok()`: `t.magic` + | ^^^^^^^^^^^^ + | +help: remove the enclosing `Ok` and `?` operator + | +LL - return Ok(t.magic?); +LL + return t.magic; + | -error: question mark operator is useless here +error: enclosing `Some` and `?` operator are unneeded --> tests/ui/needless_question_mark.rs:128:27 | LL | || -> Option<_> { Some(Some($expr)?) }() - | ^^^^^^^^^^^^^^^^^^ help: try removing question mark and `Some()`: `Some($expr)` + | ^^^^^^^^^^^^^^^^^^ ... LL | let _x = some_and_qmark_in_macro!(x?); | ---------------------------- in this macro invocation | = note: this error originates in the macro `some_and_qmark_in_macro` (in Nightly builds, run with -Z macro-backtrace for more info) +help: remove the enclosing `Some` and `?` operator + | +LL - || -> Option<_> { Some(Some($expr)?) }() +LL + || -> Option<_> { Some($expr) }() + | -error: question mark operator is useless here +error: enclosing `Some` and `?` operator are unneeded --> tests/ui/needless_question_mark.rs:140:5 | LL | Some(to.magic?) - | ^^^^^^^^^^^^^^^ help: try removing question mark and `Some()`: `to.magic` + | ^^^^^^^^^^^^^^^ + | +help: remove the enclosing `Some` and `?` operator + | +LL - Some(to.magic?) +LL + to.magic + | -error: question mark operator is useless here +error: enclosing `Ok` and `?` operator are unneeded --> tests/ui/needless_question_mark.rs:149:5 | LL | Ok(s.magic?) - | ^^^^^^^^^^^^ help: try removing question mark and `Ok()`: `s.magic` + | ^^^^^^^^^^^^ + | +help: remove the enclosing `Ok` and `?` operator + | +LL - Ok(s.magic?) +LL + s.magic + | -error: question mark operator is useless here +error: enclosing `Some` and `?` operator are unneeded --> tests/ui/needless_question_mark.rs:154:7 | LL | { Some(a?) } - | ^^^^^^^^ help: try removing question mark and `Some()`: `a` + | ^^^^^^^^ + | +help: remove the enclosing `Some` and `?` operator + | +LL - { Some(a?) } +LL + { a } + | error: aborting due to 15 previous errors diff --git a/tests/ui/question_mark.fixed b/tests/ui/question_mark.fixed index 6bd071d07f523..507bc2b29d862 100644 --- a/tests/ui/question_mark.fixed +++ b/tests/ui/question_mark.fixed @@ -301,6 +301,11 @@ fn pattern() -> Result<(), PatternedError> { res } +fn expect_expr(a: Option) -> Option { + #[expect(clippy::needless_question_mark)] + Some(a?) +} + fn main() {} // `?` is not the same as `return None;` if inside of a try block diff --git a/tests/ui/question_mark.rs b/tests/ui/question_mark.rs index dd093c9bf480c..64b51b849ede0 100644 --- a/tests/ui/question_mark.rs +++ b/tests/ui/question_mark.rs @@ -371,6 +371,11 @@ fn pattern() -> Result<(), PatternedError> { res } +fn expect_expr(a: Option) -> Option { + #[expect(clippy::needless_question_mark)] + Some(a?) +} + fn main() {} // `?` is not the same as `return None;` if inside of a try block diff --git a/tests/ui/question_mark.stderr b/tests/ui/question_mark.stderr index 8fe04b895cea2..d8ce4420aeeb6 100644 --- a/tests/ui/question_mark.stderr +++ b/tests/ui/question_mark.stderr @@ -198,7 +198,7 @@ LL | | } | |_____^ help: replace it with: `func_returning_result()?;` error: this block may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:390:13 + --> tests/ui/question_mark.rs:395:13 | LL | / if a.is_none() { LL | | @@ -208,7 +208,7 @@ LL | | } | |_____________^ help: replace it with: `a?;` error: this `let...else` may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:451:5 + --> tests/ui/question_mark.rs:456:5 | LL | / let Some(v) = bar.foo.owned.clone() else { LL | | return None; @@ -216,7 +216,7 @@ LL | | }; | |______^ help: replace it with: `let v = bar.foo.owned.clone()?;` error: this `let...else` may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:466:5 + --> tests/ui/question_mark.rs:471:5 | LL | / let Some(ref x) = foo.opt_x else { LL | | return None; @@ -224,7 +224,7 @@ LL | | }; | |______^ help: replace it with: `let x = foo.opt_x.as_ref()?;` error: this `let...else` may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:476:5 + --> tests/ui/question_mark.rs:481:5 | LL | / let Some(ref mut x) = foo.opt_x else { LL | | return None; @@ -232,7 +232,7 @@ LL | | }; | |______^ help: replace it with: `let x = foo.opt_x.as_mut()?;` error: this `let...else` may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:487:5 + --> tests/ui/question_mark.rs:492:5 | LL | / let Some(ref x @ ref y) = foo.opt_x else { LL | | return None; @@ -240,7 +240,7 @@ LL | | }; | |______^ help: replace it with: `let x @ y = foo.opt_x.as_ref()?;` error: this `let...else` may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:491:5 + --> tests/ui/question_mark.rs:496:5 | LL | / let Some(ref x @ WrapperStructWithString(_)) = bar else { LL | | return None; @@ -248,7 +248,7 @@ LL | | }; | |______^ help: replace it with: `let x @ &WrapperStructWithString(_) = bar.as_ref()?;` error: this `let...else` may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:495:5 + --> tests/ui/question_mark.rs:500:5 | LL | / let Some(ref mut x @ WrapperStructWithString(_)) = bar else { LL | | return None; @@ -256,7 +256,7 @@ LL | | }; | |______^ help: replace it with: `let x @ &mut WrapperStructWithString(_) = bar.as_mut()?;` error: this block may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:517:5 + --> tests/ui/question_mark.rs:522:5 | LL | / if arg.is_none() { LL | | @@ -265,7 +265,7 @@ LL | | } | |_____^ help: replace it with: `arg?;` error: this `match` expression can be replaced with `?` - --> tests/ui/question_mark.rs:521:15 + --> tests/ui/question_mark.rs:526:15 | LL | let val = match arg { | _______________^ @@ -276,7 +276,7 @@ LL | | }; | |_____^ help: try instead: `arg?` error: this `let...else` may be rewritten with the `?` operator - --> tests/ui/question_mark.rs:531:5 + --> tests/ui/question_mark.rs:536:5 | LL | / let Some(a) = *a else { LL | | return None; From 6e64338a49eea12ed257805ce299cfd45b082d04 Mon Sep 17 00:00:00 2001 From: bendn Date: Mon, 31 Mar 2025 15:50:56 +0700 Subject: [PATCH 29/90] Suggest {to,from}_ne_bytes for transmutations between arrays and integers, etc --- tests/ui/blocks_in_conditions.fixed | 8 +- tests/ui/blocks_in_conditions.rs | 8 +- tests/ui/blocks_in_conditions.stderr | 6 +- tests/ui/crashes/ice-1782.rs | 2 +- tests/ui/transmute.rs | 1 + tests/ui/transmute.stderr | 108 ++++++++++---------- tests/ui/transmute_float_to_int.fixed | 2 +- tests/ui/transmute_float_to_int.rs | 2 +- tests/ui/transmute_int_to_char.fixed | 2 +- tests/ui/transmute_int_to_char.rs | 2 +- tests/ui/transmute_int_to_char_no_std.fixed | 2 +- tests/ui/transmute_int_to_char_no_std.rs | 2 +- 12 files changed, 79 insertions(+), 66 deletions(-) diff --git a/tests/ui/blocks_in_conditions.fixed b/tests/ui/blocks_in_conditions.fixed index c82276b358e1d..e696896538e54 100644 --- a/tests/ui/blocks_in_conditions.fixed +++ b/tests/ui/blocks_in_conditions.fixed @@ -1,7 +1,13 @@ //@aux-build:proc_macro_attr.rs #![warn(clippy::blocks_in_conditions)] -#![allow(unused, clippy::needless_if, clippy::missing_transmute_annotations)] +#![allow( + unused, + unnecessary_transmutes, + clippy::let_and_return, + clippy::needless_if, + clippy::missing_transmute_annotations +)] #![warn(clippy::nonminimal_bool)] macro_rules! blocky { diff --git a/tests/ui/blocks_in_conditions.rs b/tests/ui/blocks_in_conditions.rs index 6a4a7c6210686..8c8f3249b8a74 100644 --- a/tests/ui/blocks_in_conditions.rs +++ b/tests/ui/blocks_in_conditions.rs @@ -1,7 +1,13 @@ //@aux-build:proc_macro_attr.rs #![warn(clippy::blocks_in_conditions)] -#![allow(unused, clippy::needless_if, clippy::missing_transmute_annotations)] +#![allow( + unused, + unnecessary_transmutes, + clippy::let_and_return, + clippy::needless_if, + clippy::missing_transmute_annotations +)] #![warn(clippy::nonminimal_bool)] macro_rules! blocky { diff --git a/tests/ui/blocks_in_conditions.stderr b/tests/ui/blocks_in_conditions.stderr index e57eca5dceef5..41ff59c683e84 100644 --- a/tests/ui/blocks_in_conditions.stderr +++ b/tests/ui/blocks_in_conditions.stderr @@ -1,5 +1,5 @@ error: in an `if` condition, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a `let` - --> tests/ui/blocks_in_conditions.rs:25:5 + --> tests/ui/blocks_in_conditions.rs:31:5 | LL | / if { LL | | @@ -20,13 +20,13 @@ LL ~ }; if res { | error: omit braces around single expression condition - --> tests/ui/blocks_in_conditions.rs:37:8 + --> tests/ui/blocks_in_conditions.rs:43:8 | LL | if { true } { 6 } else { 10 } | ^^^^^^^^ help: try: `true` error: this boolean expression can be simplified - --> tests/ui/blocks_in_conditions.rs:43:8 + --> tests/ui/blocks_in_conditions.rs:49:8 | LL | if true && x == 3 { 6 } else { 10 } | ^^^^^^^^^^^^^^ help: try: `x == 3` diff --git a/tests/ui/crashes/ice-1782.rs b/tests/ui/crashes/ice-1782.rs index 4a1886c08af6a..776b0a93bf7c7 100644 --- a/tests/ui/crashes/ice-1782.rs +++ b/tests/ui/crashes/ice-1782.rs @@ -1,6 +1,6 @@ //@ check-pass -#![allow(dead_code, unused_variables, invalid_null_arguments)] +#![allow(dead_code, unused_variables, invalid_null_arguments, unnecessary_transmutes)] #![allow(clippy::unnecessary_cast, clippy::missing_transmute_annotations)] /// Should not trigger an ICE in `SpanlessEq` / `consts::constant` diff --git a/tests/ui/transmute.rs b/tests/ui/transmute.rs index 8c8674ac356de..2b8b6c539ad3c 100644 --- a/tests/ui/transmute.rs +++ b/tests/ui/transmute.rs @@ -3,6 +3,7 @@ #![allow( dead_code, clippy::borrow_as_ptr, + unnecessary_transmutes, clippy::needless_lifetimes, clippy::missing_transmute_annotations )] diff --git a/tests/ui/transmute.stderr b/tests/ui/transmute.stderr index 4219e09d2aba9..1bb70151965cd 100644 --- a/tests/ui/transmute.stderr +++ b/tests/ui/transmute.stderr @@ -1,5 +1,5 @@ error: transmute from a reference to a pointer - --> tests/ui/transmute.rs:32:27 + --> tests/ui/transmute.rs:33:27 | LL | let _: *const T = core::mem::transmute(t); | ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T` @@ -8,61 +8,61 @@ LL | let _: *const T = core::mem::transmute(t); = help: to override `-D warnings` add `#[allow(clippy::useless_transmute)]` error: transmute from a reference to a pointer - --> tests/ui/transmute.rs:35:25 + --> tests/ui/transmute.rs:36:25 | LL | let _: *mut T = core::mem::transmute(t); | ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T as *mut T` error: transmute from a reference to a pointer - --> tests/ui/transmute.rs:38:27 + --> tests/ui/transmute.rs:39:27 | LL | let _: *const U = core::mem::transmute(t); | ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `t as *const T as *const U` error: transmute from a type (`std::vec::Vec`) to itself - --> tests/ui/transmute.rs:46:27 + --> tests/ui/transmute.rs:47:27 | LL | let _: Vec = core::mem::transmute(my_vec()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: transmute from a type (`std::vec::Vec`) to itself - --> tests/ui/transmute.rs:49:27 + --> tests/ui/transmute.rs:50:27 | LL | let _: Vec = core::mem::transmute(my_vec()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: transmute from a type (`std::vec::Vec`) to itself - --> tests/ui/transmute.rs:52:27 + --> tests/ui/transmute.rs:53:27 | LL | let _: Vec = std::mem::transmute(my_vec()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: transmute from a type (`std::vec::Vec`) to itself - --> tests/ui/transmute.rs:55:27 + --> tests/ui/transmute.rs:56:27 | LL | let _: Vec = std::mem::transmute(my_vec()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: transmute from a type (`std::vec::Vec`) to itself - --> tests/ui/transmute.rs:58:27 + --> tests/ui/transmute.rs:59:27 | LL | let _: Vec = my_transmute(my_vec()); | ^^^^^^^^^^^^^^^^^^^^^^ error: transmute from an integer to a pointer - --> tests/ui/transmute.rs:61:31 + --> tests/ui/transmute.rs:62:31 | LL | let _: *const usize = std::mem::transmute(5_isize); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `5_isize as *const usize` error: transmute from an integer to a pointer - --> tests/ui/transmute.rs:66:31 + --> tests/ui/transmute.rs:67:31 | LL | let _: *const usize = std::mem::transmute(1 + 1usize); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(1 + 1usize) as *const usize` error: transmute from a type (`*const Usize`) to the type that it points to (`Usize`) - --> tests/ui/transmute.rs:98:24 + --> tests/ui/transmute.rs:99:24 | LL | let _: Usize = core::mem::transmute(int_const_ptr); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -71,25 +71,25 @@ LL | let _: Usize = core::mem::transmute(int_const_ptr); = help: to override `-D warnings` add `#[allow(clippy::crosspointer_transmute)]` error: transmute from a type (`*mut Usize`) to the type that it points to (`Usize`) - --> tests/ui/transmute.rs:101:24 + --> tests/ui/transmute.rs:102:24 | LL | let _: Usize = core::mem::transmute(int_mut_ptr); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: transmute from a type (`Usize`) to a pointer to that type (`*const Usize`) - --> tests/ui/transmute.rs:104:31 + --> tests/ui/transmute.rs:105:31 | LL | let _: *const Usize = core::mem::transmute(my_int()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: transmute from a type (`Usize`) to a pointer to that type (`*mut Usize`) - --> tests/ui/transmute.rs:107:29 + --> tests/ui/transmute.rs:108:29 | LL | let _: *mut Usize = core::mem::transmute(my_int()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: transmute from a `u8` to a `bool` - --> tests/ui/transmute.rs:114:28 + --> tests/ui/transmute.rs:115:28 | LL | let _: bool = unsafe { std::mem::transmute(0_u8) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `0_u8 != 0` @@ -98,7 +98,7 @@ LL | let _: bool = unsafe { std::mem::transmute(0_u8) }; = help: to override `-D warnings` add `#[allow(clippy::transmute_int_to_bool)]` error: transmute from a `u16` to a `f16` - --> tests/ui/transmute.rs:121:31 + --> tests/ui/transmute.rs:122:31 | LL | let _: f16 = unsafe { std::mem::transmute(0_u16) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f16::from_bits(0_u16)` @@ -107,97 +107,97 @@ LL | let _: f16 = unsafe { std::mem::transmute(0_u16) }; = help: to override `-D warnings` add `#[allow(clippy::transmute_int_to_float)]` error: transmute from a `i16` to a `f16` - --> tests/ui/transmute.rs:124:31 + --> tests/ui/transmute.rs:125:31 | LL | let _: f16 = unsafe { std::mem::transmute(0_i16) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f16::from_bits(0_i16 as u16)` error: transmute from a `u32` to a `f32` - --> tests/ui/transmute.rs:127:31 + --> tests/ui/transmute.rs:128:31 | LL | let _: f32 = unsafe { std::mem::transmute(0_u32) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f32::from_bits(0_u32)` error: transmute from a `i32` to a `f32` - --> tests/ui/transmute.rs:130:31 + --> tests/ui/transmute.rs:131:31 | LL | let _: f32 = unsafe { std::mem::transmute(0_i32) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f32::from_bits(0_i32 as u32)` error: transmute from a `u64` to a `f64` - --> tests/ui/transmute.rs:133:31 + --> tests/ui/transmute.rs:134:31 | LL | let _: f64 = unsafe { std::mem::transmute(0_u64) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f64::from_bits(0_u64)` error: transmute from a `i64` to a `f64` - --> tests/ui/transmute.rs:136:31 + --> tests/ui/transmute.rs:137:31 | LL | let _: f64 = unsafe { std::mem::transmute(0_i64) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f64::from_bits(0_i64 as u64)` error: transmute from a `u128` to a `f128` - --> tests/ui/transmute.rs:139:32 + --> tests/ui/transmute.rs:140:32 | LL | let _: f128 = unsafe { std::mem::transmute(0_u128) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f128::from_bits(0_u128)` error: transmute from a `i128` to a `f128` - --> tests/ui/transmute.rs:142:32 + --> tests/ui/transmute.rs:143:32 | LL | let _: f128 = unsafe { std::mem::transmute(0_i128) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f128::from_bits(0_i128 as u128)` error: transmute from a `u16` to a `f16` - --> tests/ui/transmute.rs:147:39 + --> tests/ui/transmute.rs:148:39 | LL | const VALUE16: f16 = unsafe { std::mem::transmute(0_u16) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f16::from_bits(0_u16)` error: transmute from a `u32` to a `f32` - --> tests/ui/transmute.rs:150:39 + --> tests/ui/transmute.rs:151:39 | LL | const VALUE32: f32 = unsafe { std::mem::transmute(0_u32) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f32::from_bits(0_u32)` error: transmute from a `i64` to a `f64` - --> tests/ui/transmute.rs:153:39 + --> tests/ui/transmute.rs:154:39 | LL | const VALUE64: f64 = unsafe { std::mem::transmute(0_i64) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f64::from_bits(0_i64 as u64)` error: transmute from a `i128` to a `f128` - --> tests/ui/transmute.rs:156:41 + --> tests/ui/transmute.rs:157:41 | LL | const VALUE128: f128 = unsafe { std::mem::transmute(0_i128) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f128::from_bits(0_i128 as u128)` error: transmute from a `i16` to a `f16` - --> tests/ui/transmute.rs:160:22 + --> tests/ui/transmute.rs:161:22 | LL | unsafe { std::mem::transmute(v) } | ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f16::from_bits(v as u16)` error: transmute from a `i32` to a `f32` - --> tests/ui/transmute.rs:165:22 + --> tests/ui/transmute.rs:166:22 | LL | unsafe { std::mem::transmute(v) } | ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f32::from_bits(v as u32)` error: transmute from a `u64` to a `f64` - --> tests/ui/transmute.rs:170:22 + --> tests/ui/transmute.rs:171:22 | LL | unsafe { std::mem::transmute(v) } | ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f64::from_bits(v)` error: transmute from a `u128` to a `f128` - --> tests/ui/transmute.rs:175:22 + --> tests/ui/transmute.rs:176:22 | LL | unsafe { std::mem::transmute(v) } | ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f128::from_bits(v)` error: transmute from a `u8` to a `[u8; 1]` - --> tests/ui/transmute.rs:184:30 + --> tests/ui/transmute.rs:185:30 | LL | let _: [u8; 1] = std::mem::transmute(0u8); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u8.to_ne_bytes()` @@ -206,121 +206,121 @@ LL | let _: [u8; 1] = std::mem::transmute(0u8); = help: to override `-D warnings` add `#[allow(clippy::transmute_num_to_bytes)]` error: transmute from a `u32` to a `[u8; 4]` - --> tests/ui/transmute.rs:187:30 + --> tests/ui/transmute.rs:188:30 | LL | let _: [u8; 4] = std::mem::transmute(0u32); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u32.to_ne_bytes()` error: transmute from a `u128` to a `[u8; 16]` - --> tests/ui/transmute.rs:190:31 + --> tests/ui/transmute.rs:191:31 | LL | let _: [u8; 16] = std::mem::transmute(0u128); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u128.to_ne_bytes()` error: transmute from a `i8` to a `[u8; 1]` - --> tests/ui/transmute.rs:193:30 + --> tests/ui/transmute.rs:194:30 | LL | let _: [u8; 1] = std::mem::transmute(0i8); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i8.to_ne_bytes()` error: transmute from a `i32` to a `[u8; 4]` - --> tests/ui/transmute.rs:196:30 + --> tests/ui/transmute.rs:197:30 | LL | let _: [u8; 4] = std::mem::transmute(0i32); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i32.to_ne_bytes()` error: transmute from a `i128` to a `[u8; 16]` - --> tests/ui/transmute.rs:199:31 + --> tests/ui/transmute.rs:200:31 | LL | let _: [u8; 16] = std::mem::transmute(0i128); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i128.to_ne_bytes()` error: transmute from a `f16` to a `[u8; 2]` - --> tests/ui/transmute.rs:202:30 + --> tests/ui/transmute.rs:203:30 | LL | let _: [u8; 2] = std::mem::transmute(0.0f16); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f16.to_ne_bytes()` error: transmute from a `f32` to a `[u8; 4]` - --> tests/ui/transmute.rs:205:30 + --> tests/ui/transmute.rs:206:30 | LL | let _: [u8; 4] = std::mem::transmute(0.0f32); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f32.to_ne_bytes()` error: transmute from a `f64` to a `[u8; 8]` - --> tests/ui/transmute.rs:208:30 + --> tests/ui/transmute.rs:209:30 | LL | let _: [u8; 8] = std::mem::transmute(0.0f64); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f64.to_ne_bytes()` error: transmute from a `f128` to a `[u8; 16]` - --> tests/ui/transmute.rs:211:31 + --> tests/ui/transmute.rs:212:31 | LL | let _: [u8; 16] = std::mem::transmute(0.0f128); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f128.to_ne_bytes()` error: transmute from a `u8` to a `[u8; 1]` - --> tests/ui/transmute.rs:217:30 + --> tests/ui/transmute.rs:218:30 | LL | let _: [u8; 1] = std::mem::transmute(0u8); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u8.to_ne_bytes()` error: transmute from a `u32` to a `[u8; 4]` - --> tests/ui/transmute.rs:220:30 + --> tests/ui/transmute.rs:221:30 | LL | let _: [u8; 4] = std::mem::transmute(0u32); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u32.to_ne_bytes()` error: transmute from a `u128` to a `[u8; 16]` - --> tests/ui/transmute.rs:223:31 + --> tests/ui/transmute.rs:224:31 | LL | let _: [u8; 16] = std::mem::transmute(0u128); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u128.to_ne_bytes()` error: transmute from a `i8` to a `[u8; 1]` - --> tests/ui/transmute.rs:226:30 + --> tests/ui/transmute.rs:227:30 | LL | let _: [u8; 1] = std::mem::transmute(0i8); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i8.to_ne_bytes()` error: transmute from a `i32` to a `[u8; 4]` - --> tests/ui/transmute.rs:229:30 + --> tests/ui/transmute.rs:230:30 | LL | let _: [u8; 4] = std::mem::transmute(0i32); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i32.to_ne_bytes()` error: transmute from a `i128` to a `[u8; 16]` - --> tests/ui/transmute.rs:232:31 + --> tests/ui/transmute.rs:233:31 | LL | let _: [u8; 16] = std::mem::transmute(0i128); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i128.to_ne_bytes()` error: transmute from a `f16` to a `[u8; 2]` - --> tests/ui/transmute.rs:235:30 + --> tests/ui/transmute.rs:236:30 | LL | let _: [u8; 2] = std::mem::transmute(0.0f16); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f16.to_ne_bytes()` error: transmute from a `f32` to a `[u8; 4]` - --> tests/ui/transmute.rs:238:30 + --> tests/ui/transmute.rs:239:30 | LL | let _: [u8; 4] = std::mem::transmute(0.0f32); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f32.to_ne_bytes()` error: transmute from a `f64` to a `[u8; 8]` - --> tests/ui/transmute.rs:241:30 + --> tests/ui/transmute.rs:242:30 | LL | let _: [u8; 8] = std::mem::transmute(0.0f64); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f64.to_ne_bytes()` error: transmute from a `f128` to a `[u8; 16]` - --> tests/ui/transmute.rs:244:31 + --> tests/ui/transmute.rs:245:31 | LL | let _: [u8; 16] = std::mem::transmute(0.0f128); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f128.to_ne_bytes()` error: transmute from a `&[u8]` to a `&str` - --> tests/ui/transmute.rs:253:28 + --> tests/ui/transmute.rs:254:28 | LL | let _: &str = unsafe { std::mem::transmute(B) }; | ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::str::from_utf8(B).unwrap()` @@ -329,13 +329,13 @@ LL | let _: &str = unsafe { std::mem::transmute(B) }; = help: to override `-D warnings` add `#[allow(clippy::transmute_bytes_to_str)]` error: transmute from a `&mut [u8]` to a `&mut str` - --> tests/ui/transmute.rs:256:32 + --> tests/ui/transmute.rs:257:32 | LL | let _: &mut str = unsafe { std::mem::transmute(mb) }; | ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::str::from_utf8_mut(mb).unwrap()` error: transmute from a `&[u8]` to a `&str` - --> tests/ui/transmute.rs:259:30 + --> tests/ui/transmute.rs:260:30 | LL | const _: &str = unsafe { std::mem::transmute(B) }; | ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::str::from_utf8_unchecked(B)` diff --git a/tests/ui/transmute_float_to_int.fixed b/tests/ui/transmute_float_to_int.fixed index 1f97b997eaa0e..844445907d7c2 100644 --- a/tests/ui/transmute_float_to_int.fixed +++ b/tests/ui/transmute_float_to_int.fixed @@ -1,5 +1,5 @@ #![warn(clippy::transmute_float_to_int)] -#![allow(clippy::missing_transmute_annotations)] +#![allow(clippy::missing_transmute_annotations, unnecessary_transmutes)] #![feature(f128)] #![feature(f16)] diff --git a/tests/ui/transmute_float_to_int.rs b/tests/ui/transmute_float_to_int.rs index 788a7e1026c67..a1f3b15bbfee4 100644 --- a/tests/ui/transmute_float_to_int.rs +++ b/tests/ui/transmute_float_to_int.rs @@ -1,5 +1,5 @@ #![warn(clippy::transmute_float_to_int)] -#![allow(clippy::missing_transmute_annotations)] +#![allow(clippy::missing_transmute_annotations, unnecessary_transmutes)] #![feature(f128)] #![feature(f16)] diff --git a/tests/ui/transmute_int_to_char.fixed b/tests/ui/transmute_int_to_char.fixed index b5425a2e9e854..28644aa9ebbb7 100644 --- a/tests/ui/transmute_int_to_char.fixed +++ b/tests/ui/transmute_int_to_char.fixed @@ -1,5 +1,5 @@ #![warn(clippy::transmute_int_to_char)] -#![allow(clippy::missing_transmute_annotations)] +#![allow(clippy::missing_transmute_annotations, unnecessary_transmutes)] fn int_to_char() { let _: char = unsafe { std::char::from_u32(0_u32).unwrap() }; diff --git a/tests/ui/transmute_int_to_char.rs b/tests/ui/transmute_int_to_char.rs index b24bb177c9fc0..8c83ecc8914b6 100644 --- a/tests/ui/transmute_int_to_char.rs +++ b/tests/ui/transmute_int_to_char.rs @@ -1,5 +1,5 @@ #![warn(clippy::transmute_int_to_char)] -#![allow(clippy::missing_transmute_annotations)] +#![allow(clippy::missing_transmute_annotations, unnecessary_transmutes)] fn int_to_char() { let _: char = unsafe { std::mem::transmute(0_u32) }; diff --git a/tests/ui/transmute_int_to_char_no_std.fixed b/tests/ui/transmute_int_to_char_no_std.fixed index e525751e306ea..e6e09a2be4bf5 100644 --- a/tests/ui/transmute_int_to_char_no_std.fixed +++ b/tests/ui/transmute_int_to_char_no_std.fixed @@ -1,7 +1,7 @@ #![no_std] #![feature(lang_items)] #![warn(clippy::transmute_int_to_char)] -#![allow(clippy::missing_transmute_annotations)] +#![allow(clippy::missing_transmute_annotations, unnecessary_transmutes)] use core::panic::PanicInfo; diff --git a/tests/ui/transmute_int_to_char_no_std.rs b/tests/ui/transmute_int_to_char_no_std.rs index 7cb508ceaf3bc..0f2106df00e6c 100644 --- a/tests/ui/transmute_int_to_char_no_std.rs +++ b/tests/ui/transmute_int_to_char_no_std.rs @@ -1,7 +1,7 @@ #![no_std] #![feature(lang_items)] #![warn(clippy::transmute_int_to_char)] -#![allow(clippy::missing_transmute_annotations)] +#![allow(clippy::missing_transmute_annotations, unnecessary_transmutes)] use core::panic::PanicInfo; From 6ee75c4a6e1e26ac04c825585a18f1645fd5385b Mon Sep 17 00:00:00 2001 From: Boxy Date: Thu, 24 Apr 2025 11:31:33 +0100 Subject: [PATCH 30/90] Remove `weak` alias terminology --- clippy_lints/src/dereference.rs | 2 +- clippy_lints/src/missing_const_for_fn.rs | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/clippy_lints/src/dereference.rs b/clippy_lints/src/dereference.rs index 7da5a530eaa3d..5edb5c235703e 100644 --- a/clippy_lints/src/dereference.rs +++ b/clippy_lints/src/dereference.rs @@ -853,7 +853,7 @@ impl TyCoercionStability { continue; }, ty::Param(_) if for_return => Self::Deref, - ty::Alias(ty::Weak | ty::Inherent, _) => unreachable!("should have been normalized away above"), + ty::Alias(ty::Free | ty::Inherent, _) => unreachable!("should have been normalized away above"), ty::Alias(ty::Projection, _) if !for_return && ty.has_non_region_param() => Self::Reborrow, ty::Infer(_) | ty::Error(_) diff --git a/clippy_lints/src/missing_const_for_fn.rs b/clippy_lints/src/missing_const_for_fn.rs index 67537a251da7f..1f142bc3ba63c 100644 --- a/clippy_lints/src/missing_const_for_fn.rs +++ b/clippy_lints/src/missing_const_for_fn.rs @@ -197,7 +197,7 @@ fn fn_inputs_has_impl_trait_ty(cx: &LateContext<'_>, def_id: LocalDefId) -> bool inputs.iter().any(|input| { matches!( input.kind(), - ty::Alias(ty::AliasTyKind::Weak, alias_ty) if cx.tcx.type_of(alias_ty.def_id).skip_binder().is_impl_trait() + ty::Alias(ty::AliasTyKind::Free, alias_ty) if cx.tcx.type_of(alias_ty.def_id).skip_binder().is_impl_trait() ) }) } From 736be8bbb1f620854e068570e7ec1fd3f1a6c139 Mon Sep 17 00:00:00 2001 From: Alex Macleod Date: Thu, 24 Apr 2025 13:40:57 +0000 Subject: [PATCH 31/90] Consistently refer to the `?` operator --- clippy_lints/src/methods/mod.rs | 5 ++--- clippy_lints/src/methods/return_and_then.rs | 11 +++++++++-- clippy_lints/src/question_mark.rs | 8 ++++---- clippy_lints/src/question_mark_used.rs | 18 ++++++------------ clippy_utils/src/lib.rs | 5 ++--- tests/ui/question_mark_used.stderr | 2 +- tests/ui/return_and_then.stderr | 14 +++++++------- 7 files changed, 31 insertions(+), 32 deletions(-) diff --git a/clippy_lints/src/methods/mod.rs b/clippy_lints/src/methods/mod.rs index ad374dee516cd..10f4637d08f66 100644 --- a/clippy_lints/src/methods/mod.rs +++ b/clippy_lints/src/methods/mod.rs @@ -4370,11 +4370,10 @@ declare_clippy_lint! { declare_clippy_lint! { /// ### What it does - /// - /// Detect functions that end with `Option::and_then` or `Result::and_then`, and suggest using a question mark (`?`) instead. + /// Detect functions that end with `Option::and_then` or `Result::and_then`, and suggest using + /// the `?` operator instead. /// /// ### Why is this bad? - /// /// The `and_then` method is used to chain a computation that returns an `Option` or a `Result`. /// This can be replaced with the `?` operator, which is more concise and idiomatic. /// diff --git a/clippy_lints/src/methods/return_and_then.rs b/clippy_lints/src/methods/return_and_then.rs index e8861935d4216..91643b0dfefde 100644 --- a/clippy_lints/src/methods/return_and_then.rs +++ b/clippy_lints/src/methods/return_and_then.rs @@ -55,7 +55,6 @@ pub(super) fn check<'tcx>( None => &body_snip, }; - let msg = "use the question mark operator instead of an `and_then` call"; let sugg = format!( "let {} = {}?;\n{}", arg_snip, @@ -63,5 +62,13 @@ pub(super) fn check<'tcx>( reindent_multiline(inner, false, indent_of(cx, expr.span)) ); - span_lint_and_sugg(cx, RETURN_AND_THEN, expr.span, msg, "try", sugg, applicability); + span_lint_and_sugg( + cx, + RETURN_AND_THEN, + expr.span, + "use the `?` operator instead of an `and_then` call", + "try", + sugg, + applicability, + ); } diff --git a/clippy_lints/src/question_mark.rs b/clippy_lints/src/question_mark.rs index d318897443da5..d193a534b65a5 100644 --- a/clippy_lints/src/question_mark.rs +++ b/clippy_lints/src/question_mark.rs @@ -27,10 +27,10 @@ use rustc_span::symbol::Symbol; declare_clippy_lint! { /// ### What it does - /// Checks for expressions that could be replaced by the question mark operator. + /// Checks for expressions that could be replaced by the `?` operator. /// /// ### Why is this bad? - /// Question mark usage is more idiomatic. + /// Using the `?` operator is shorter and more idiomatic. /// /// ### Example /// ```ignore @@ -47,7 +47,7 @@ declare_clippy_lint! { #[clippy::version = "pre 1.29.0"] pub QUESTION_MARK, style, - "checks for expressions that could be replaced by the question mark operator" + "checks for expressions that could be replaced by the `?` operator" } pub struct QuestionMark { @@ -280,7 +280,7 @@ fn expr_return_none_or_err( /// } /// ``` /// -/// If it matches, it will suggest to use the question mark operator instead +/// If it matches, it will suggest to use the `?` operator instead fn check_is_none_or_err_and_early_return<'tcx>(cx: &LateContext<'tcx>, expr: &Expr<'tcx>) { if let Some(higher::If { cond, then, r#else }) = higher::If::hir(expr) && !is_else_clause(cx.tcx, expr) diff --git a/clippy_lints/src/question_mark_used.rs b/clippy_lints/src/question_mark_used.rs index 0a974bf9d2f71..96ea485d76936 100644 --- a/clippy_lints/src/question_mark_used.rs +++ b/clippy_lints/src/question_mark_used.rs @@ -7,10 +7,10 @@ use rustc_session::declare_lint_pass; declare_clippy_lint! { /// ### What it does - /// Checks for expressions that use the question mark operator and rejects them. + /// Checks for expressions that use the `?` operator and rejects them. /// /// ### Why restrict this? - /// Sometimes code wants to avoid the question mark operator because for instance a local + /// Sometimes code wants to avoid the `?` operator because for instance a local /// block requires a macro to re-throw errors to attach additional information to the /// error. /// @@ -27,7 +27,7 @@ declare_clippy_lint! { #[clippy::version = "1.69.0"] pub QUESTION_MARK_USED, restriction, - "complains if the question mark operator is used" + "checks if the `?` operator is used" } declare_lint_pass!(QuestionMarkUsed => [QUESTION_MARK_USED]); @@ -40,15 +40,9 @@ impl<'tcx> LateLintPass<'tcx> for QuestionMarkUsed { } #[expect(clippy::collapsible_span_lint_calls, reason = "rust-clippy#7797")] - span_lint_and_then( - cx, - QUESTION_MARK_USED, - expr.span, - "question mark operator was used", - |diag| { - diag.help("consider using a custom macro or match expression"); - }, - ); + span_lint_and_then(cx, QUESTION_MARK_USED, expr.span, "the `?` operator was used", |diag| { + diag.help("consider using a custom macro or match expression"); + }); } } } diff --git a/clippy_utils/src/lib.rs b/clippy_utils/src/lib.rs index 264b9b0406d0b..34535a03fcd43 100644 --- a/clippy_utils/src/lib.rs +++ b/clippy_utils/src/lib.rs @@ -3101,7 +3101,7 @@ pub fn span_find_starting_semi(sm: &SourceMap, span: Span) -> Span { sm.span_take_while(span, |&ch| ch == ' ' || ch == ';') } -/// Returns whether the given let pattern and else body can be turned into a question mark +/// Returns whether the given let pattern and else body can be turned into the `?` operator /// /// For this example: /// ```ignore @@ -3124,8 +3124,7 @@ pub fn span_find_starting_semi(sm: &SourceMap, span: Span) -> Span { /// ``` /// /// We output `Some(a)` in the first instance, and `Some(FooBar { a, b })` in the second, because -/// the question mark operator is applicable here. Callers have to check whether we are in a -/// constant or not. +/// the `?` operator is applicable here. Callers have to check whether we are in a constant or not. pub fn pat_and_expr_can_be_question_mark<'a, 'hir>( cx: &LateContext<'_>, pat: &'a Pat<'hir>, diff --git a/tests/ui/question_mark_used.stderr b/tests/ui/question_mark_used.stderr index 53cb59c021667..82f0d32504077 100644 --- a/tests/ui/question_mark_used.stderr +++ b/tests/ui/question_mark_used.stderr @@ -1,4 +1,4 @@ -error: question mark operator was used +error: the `?` operator was used --> tests/ui/question_mark_used.rs:11:5 | LL | other_function()?; diff --git a/tests/ui/return_and_then.stderr b/tests/ui/return_and_then.stderr index cc611c3dba679..a7acbe7b3401c 100644 --- a/tests/ui/return_and_then.stderr +++ b/tests/ui/return_and_then.stderr @@ -1,4 +1,4 @@ -error: use the question mark operator instead of an `and_then` call +error: use the `?` operator instead of an `and_then` call --> tests/ui/return_and_then.rs:5:9 | LL | / opt.and_then(|n| { @@ -20,7 +20,7 @@ LL + ret += n; LL + if n > 1 { Some(ret) } else { None } | -error: use the question mark operator instead of an `and_then` call +error: use the `?` operator instead of an `and_then` call --> tests/ui/return_and_then.rs:14:9 | LL | opt.and_then(|n| test_opt_block(Some(n))) @@ -32,7 +32,7 @@ LL ~ let n = opt?; LL + test_opt_block(Some(n)) | -error: use the question mark operator instead of an `and_then` call +error: use the `?` operator instead of an `and_then` call --> tests/ui/return_and_then.rs:19:9 | LL | gen_option(1).and_then(|n| test_opt_block(Some(n))) @@ -44,7 +44,7 @@ LL ~ let n = gen_option(1)?; LL + test_opt_block(Some(n)) | -error: use the question mark operator instead of an `and_then` call +error: use the `?` operator instead of an `and_then` call --> tests/ui/return_and_then.rs:24:9 | LL | opt.and_then(|n| if n > 1 { Ok(n + 1) } else { Err(n) }) @@ -56,7 +56,7 @@ LL ~ let n = opt?; LL + if n > 1 { Ok(n + 1) } else { Err(n) } | -error: use the question mark operator instead of an `and_then` call +error: use the `?` operator instead of an `and_then` call --> tests/ui/return_and_then.rs:29:9 | LL | opt.and_then(|n| test_res_block(Ok(n))) @@ -68,7 +68,7 @@ LL ~ let n = opt?; LL + test_res_block(Ok(n)) | -error: use the question mark operator instead of an `and_then` call +error: use the `?` operator instead of an `and_then` call --> tests/ui/return_and_then.rs:35:9 | LL | Some("").and_then(|x| if x.len() > 2 { Some(3) } else { None }) @@ -80,7 +80,7 @@ LL ~ let x = Some("")?; LL + if x.len() > 2 { Some(3) } else { None } | -error: use the question mark operator instead of an `and_then` call +error: use the `?` operator instead of an `and_then` call --> tests/ui/return_and_then.rs:41:9 | LL | / Some(match (vec![1, 2, 3], vec![1, 2, 4]) { From fc12b5b6d8f5ed80ba07e2a43b3a08b07d8482d3 Mon Sep 17 00:00:00 2001 From: Kivooeo Date: Tue, 22 Apr 2025 15:44:11 +0500 Subject: [PATCH 32/90] fix-issue-14665 --- clippy_lints/src/manual_div_ceil.rs | 6 +-- tests/ui/manual_div_ceil.fixed | 23 +++++++++++ tests/ui/manual_div_ceil.rs | 23 +++++++++++ tests/ui/manual_div_ceil.stderr | 62 +++++++++++++++++++++-------- 4 files changed, 94 insertions(+), 20 deletions(-) diff --git a/clippy_lints/src/manual_div_ceil.rs b/clippy_lints/src/manual_div_ceil.rs index 444ecd5d2bb95..ed0cce754b954 100644 --- a/clippy_lints/src/manual_div_ceil.rs +++ b/clippy_lints/src/manual_div_ceil.rs @@ -1,7 +1,7 @@ use clippy_config::Conf; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::msrvs::{self, Msrv}; -use clippy_utils::source::snippet_with_applicability; +use clippy_utils::source::snippet_with_context; use clippy_utils::sugg::{Sugg, has_enclosing_paren}; use clippy_utils::{SpanlessEq, sym}; use rustc_ast::{BinOpKind, LitIntType, LitKind, UnOp}; @@ -199,9 +199,9 @@ fn build_suggestion( } else { format!("{dividend_sugg_str}{type_suffix}") }; - let divisor_snippet = snippet_with_applicability(cx, rhs.span.source_callsite(), "..", applicability); + let divisor_snippet = snippet_with_context(cx, rhs.span, expr.span.ctxt(), "..", applicability); - let sugg = format!("{suggestion_before_div_ceil}.div_ceil({divisor_snippet})"); + let sugg = format!("{suggestion_before_div_ceil}.div_ceil({})", divisor_snippet.0); span_lint_and_sugg( cx, diff --git a/tests/ui/manual_div_ceil.fixed b/tests/ui/manual_div_ceil.fixed index 57fe8917afe88..58ee6978fc125 100644 --- a/tests/ui/manual_div_ceil.fixed +++ b/tests/ui/manual_div_ceil.fixed @@ -1,5 +1,21 @@ #![warn(clippy::manual_div_ceil)] +macro_rules! y { + () => { + let x = 33u32; + let _ = x.div_ceil(8); + //~^ manual_div_ceil + let _ = x.div_ceil(8); + //~^ manual_div_ceil + }; +} + +macro_rules! eight { + () => { + 8 + }; +} + fn main() { let x = 7_u32; let y = 4_u32; @@ -32,6 +48,13 @@ fn main() { let _ = (z as i32 + (y_i - 1)) / y_i; let _ = (7_u32 as i32 + (y_i - 1)) / y_i; let _ = (7_u32 as i32 + (4 - 1)) / 4; + + // Test lint with macro + y!(); + + // Also test if RHS should be result of macro expansion + let _ = 33u32.div_ceil(eight!()); + //~^ manual_div_ceil } fn issue_13843() { diff --git a/tests/ui/manual_div_ceil.rs b/tests/ui/manual_div_ceil.rs index ec343513e5ce3..aa0d81b22a0e2 100644 --- a/tests/ui/manual_div_ceil.rs +++ b/tests/ui/manual_div_ceil.rs @@ -1,5 +1,21 @@ #![warn(clippy::manual_div_ceil)] +macro_rules! y { + () => { + let x = 33u32; + let _ = (x + 7) / 8; + //~^ manual_div_ceil + let _ = (7 + x) / 8; + //~^ manual_div_ceil + }; +} + +macro_rules! eight { + () => { + 8 + }; +} + fn main() { let x = 7_u32; let y = 4_u32; @@ -32,6 +48,13 @@ fn main() { let _ = (z as i32 + (y_i - 1)) / y_i; let _ = (7_u32 as i32 + (y_i - 1)) / y_i; let _ = (7_u32 as i32 + (4 - 1)) / 4; + + // Test lint with macro + y!(); + + // Also test if RHS should be result of macro expansion + let _ = (33u32 + 7) / eight!(); + //~^ manual_div_ceil } fn issue_13843() { diff --git a/tests/ui/manual_div_ceil.stderr b/tests/ui/manual_div_ceil.stderr index 8e14ab274269a..9be5a19bf391f 100644 --- a/tests/ui/manual_div_ceil.stderr +++ b/tests/ui/manual_div_ceil.stderr @@ -1,5 +1,5 @@ error: manually reimplementing `div_ceil` - --> tests/ui/manual_div_ceil.rs:9:13 + --> tests/ui/manual_div_ceil.rs:25:13 | LL | let _ = (x + (y - 1)) / y; | ^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `x.div_ceil(y)` @@ -8,94 +8,122 @@ LL | let _ = (x + (y - 1)) / y; = help: to override `-D warnings` add `#[allow(clippy::manual_div_ceil)]` error: manually reimplementing `div_ceil` - --> tests/ui/manual_div_ceil.rs:11:13 + --> tests/ui/manual_div_ceil.rs:27:13 | LL | let _ = ((y - 1) + x) / y; | ^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `x.div_ceil(y)` error: manually reimplementing `div_ceil` - --> tests/ui/manual_div_ceil.rs:13:13 + --> tests/ui/manual_div_ceil.rs:29:13 | LL | let _ = (x + y - 1) / y; | ^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `x.div_ceil(y)` error: manually reimplementing `div_ceil` - --> tests/ui/manual_div_ceil.rs:16:13 + --> tests/ui/manual_div_ceil.rs:32:13 | LL | let _ = (7_u32 + (4 - 1)) / 4; | ^^^^^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `7_u32.div_ceil(4)` error: manually reimplementing `div_ceil` - --> tests/ui/manual_div_ceil.rs:18:13 + --> tests/ui/manual_div_ceil.rs:34:13 | LL | let _ = (7_i32 as u32 + (4 - 1)) / 4; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `(7_i32 as u32).div_ceil(4)` error: manually reimplementing `div_ceil` - --> tests/ui/manual_div_ceil.rs:39:13 + --> tests/ui/manual_div_ceil.rs:6:17 + | +LL | let _ = (x + 7) / 8; + | ^^^^^^^^^^^ help: consider using `.div_ceil()`: `x.div_ceil(8)` +... +LL | y!(); + | ---- in this macro invocation + | + = note: this error originates in the macro `y` (in Nightly builds, run with -Z macro-backtrace for more info) + +error: manually reimplementing `div_ceil` + --> tests/ui/manual_div_ceil.rs:8:17 + | +LL | let _ = (7 + x) / 8; + | ^^^^^^^^^^^ help: consider using `.div_ceil()`: `x.div_ceil(8)` +... +LL | y!(); + | ---- in this macro invocation + | + = note: this error originates in the macro `y` (in Nightly builds, run with -Z macro-backtrace for more info) + +error: manually reimplementing `div_ceil` + --> tests/ui/manual_div_ceil.rs:56:13 + | +LL | let _ = (33u32 + 7) / eight!(); + | ^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `33u32.div_ceil(eight!())` + +error: manually reimplementing `div_ceil` + --> tests/ui/manual_div_ceil.rs:62:13 | LL | let _ = (2048 + x - 1) / x; | ^^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `2048_usize.div_ceil(x)` error: manually reimplementing `div_ceil` - --> tests/ui/manual_div_ceil.rs:43:13 + --> tests/ui/manual_div_ceil.rs:66:13 | LL | let _ = (2048usize + x - 1) / x; | ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `2048usize.div_ceil(x)` error: manually reimplementing `div_ceil` - --> tests/ui/manual_div_ceil.rs:47:13 + --> tests/ui/manual_div_ceil.rs:70:13 | LL | let _ = (2048_usize + x - 1) / x; | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `2048_usize.div_ceil(x)` error: manually reimplementing `div_ceil` - --> tests/ui/manual_div_ceil.rs:51:13 + --> tests/ui/manual_div_ceil.rs:74:13 | LL | let _ = (x + 4 - 1) / 4; | ^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `x.div_ceil(4)` error: manually reimplementing `div_ceil` - --> tests/ui/manual_div_ceil.rs:54:18 + --> tests/ui/manual_div_ceil.rs:77:18 | LL | let _: u32 = (2048 + 6 - 1) / 6; | ^^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `2048_u32.div_ceil(6)` error: manually reimplementing `div_ceil` - --> tests/ui/manual_div_ceil.rs:56:20 + --> tests/ui/manual_div_ceil.rs:79:20 | LL | let _: usize = (2048 + 6 - 1) / 6; | ^^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `2048_usize.div_ceil(6)` error: manually reimplementing `div_ceil` - --> tests/ui/manual_div_ceil.rs:58:18 + --> tests/ui/manual_div_ceil.rs:81:18 | LL | let _: u32 = (0x2048 + 0x6 - 1) / 0x6; | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `0x2048_u32.div_ceil(0x6)` error: manually reimplementing `div_ceil` - --> tests/ui/manual_div_ceil.rs:61:13 + --> tests/ui/manual_div_ceil.rs:84:13 | LL | let _ = (2048 + 6u32 - 1) / 6u32; | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `2048_u32.div_ceil(6u32)` error: manually reimplementing `div_ceil` - --> tests/ui/manual_div_ceil.rs:64:13 + --> tests/ui/manual_div_ceil.rs:87:13 | LL | let _ = (1_000_000 + 6u32 - 1) / 6u32; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `1_000_000_u32.div_ceil(6u32)` error: manually reimplementing `div_ceil` - --> tests/ui/manual_div_ceil.rs:70:13 + --> tests/ui/manual_div_ceil.rs:93:13 | LL | let _ = (x + 7) / 8; | ^^^^^^^^^^^ help: consider using `.div_ceil()`: `x.div_ceil(8)` error: manually reimplementing `div_ceil` - --> tests/ui/manual_div_ceil.rs:72:13 + --> tests/ui/manual_div_ceil.rs:95:13 | LL | let _ = (7 + x) / 8; | ^^^^^^^^^^^ help: consider using `.div_ceil()`: `x.div_ceil(8)` -error: aborting due to 16 previous errors +error: aborting due to 19 previous errors From 7b337f6e259ce3ae19e1c0c22c8ff493ecb4a8a3 Mon Sep 17 00:00:00 2001 From: Alex Macleod Date: Wed, 23 Apr 2025 13:24:01 +0000 Subject: [PATCH 33/90] Replace some `Symbol::as_str` usage --- clippy_lints/src/assigning_clones.rs | 11 +-- .../attrs/blanket_clippy_restriction_lints.rs | 8 +- clippy_lints/src/attrs/deprecated_cfg_attr.rs | 2 +- clippy_lints/src/attrs/deprecated_semver.rs | 3 +- .../src/casts/cast_abs_to_unsigned.rs | 3 +- .../src/casts/cast_possible_truncation.rs | 4 +- clippy_lints/src/casts/cast_ptr_alignment.rs | 5 +- clippy_lints/src/crate_in_macro_def.rs | 5 +- clippy_lints/src/floating_point_arithmetic.rs | 4 +- clippy_lints/src/from_raw_with_void_ptr.rs | 5 +- clippy_lints/src/from_str_radix_10.rs | 5 +- clippy_lints/src/implicit_hasher.rs | 21 ++-- clippy_lints/src/infinite_iter.rs | 9 +- clippy_lints/src/iter_without_into_iter.rs | 5 +- clippy_lints/src/len_zero.rs | 8 +- clippy_lints/src/loops/same_item_push.rs | 5 +- clippy_lints/src/manual_hash_one.rs | 7 +- clippy_lints/src/manual_is_ascii_check.rs | 6 +- clippy_lints/src/manual_option_as_slice.rs | 6 +- .../src/methods/double_ended_iterator_last.rs | 6 +- clippy_lints/src/methods/filter_map.rs | 4 +- .../methods/needless_character_iteration.rs | 6 +- clippy_lints/src/methods/needless_collect.rs | 6 +- .../src/methods/read_line_without_trim.rs | 7 +- clippy_lints/src/methods/str_split.rs | 3 +- .../src/methods/unnecessary_filter_map.rs | 5 +- .../src/methods/unnecessary_to_owned.rs | 12 +-- clippy_lints/src/minmax.rs | 13 +-- clippy_lints/src/missing_fields_in_debug.rs | 6 +- .../src/mixed_read_write_in_expression.rs | 4 +- clippy_lints/src/needless_for_each.rs | 6 +- .../src/non_octal_unix_permissions.rs | 6 +- clippy_lints/src/non_zero_suggestions.rs | 4 +- clippy_lints/src/operators/float_cmp.rs | 6 +- .../src/permissions_set_readonly_false.rs | 4 +- clippy_lints/src/ptr_offset_with_cast.rs | 4 +- clippy_lints/src/question_mark.rs | 7 +- .../src/slow_vector_initialization.rs | 9 +- clippy_lints/src/strings.rs | 6 +- clippy_lints/src/to_digit_is_some.rs | 6 +- clippy_lints/src/transmute/eager_transmute.rs | 6 +- clippy_lints/src/uninit_vec.rs | 8 +- clippy_lints/src/unused_self.rs | 11 +-- clippy_lints/src/unwrap.rs | 4 +- clippy_lints/src/write.rs | 12 +-- clippy_lints_internal/src/lib.rs | 8 +- .../src/{interning_literals.rs => symbols.rs} | 99 ++++++++++++++++--- clippy_utils/src/higher.rs | 6 +- clippy_utils/src/lib.rs | 4 +- clippy_utils/src/sym.rs | 44 +++++++++ tests/ui-internal/symbol_as_str.fixed | 21 ++++ tests/ui-internal/symbol_as_str.rs | 21 ++++ tests/ui-internal/symbol_as_str.stderr | 76 ++++++++++++++ tests/ui-internal/symbol_as_str_unfixable.rs | 15 +++ .../symbol_as_str_unfixable.stderr | 40 ++++++++ 55 files changed, 448 insertions(+), 179 deletions(-) rename clippy_lints_internal/src/{interning_literals.rs => symbols.rs} (52%) create mode 100644 tests/ui-internal/symbol_as_str.fixed create mode 100644 tests/ui-internal/symbol_as_str.rs create mode 100644 tests/ui-internal/symbol_as_str.stderr create mode 100644 tests/ui-internal/symbol_as_str_unfixable.rs create mode 100644 tests/ui-internal/symbol_as_str_unfixable.stderr diff --git a/clippy_lints/src/assigning_clones.rs b/clippy_lints/src/assigning_clones.rs index 9acff676d4f6b..8b8b42bbf7228 100644 --- a/clippy_lints/src/assigning_clones.rs +++ b/clippy_lints/src/assigning_clones.rs @@ -3,14 +3,13 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::mir::{PossibleBorrowerMap, enclosing_mir}; use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::sugg::Sugg; -use clippy_utils::{is_diag_trait_item, is_in_test, last_path_segment, local_is_initialized, path_to_local}; +use clippy_utils::{is_diag_trait_item, is_in_test, last_path_segment, local_is_initialized, path_to_local, sym}; use rustc_errors::Applicability; use rustc_hir::{self as hir, Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::mir; use rustc_middle::ty::{self, Instance, Mutability}; use rustc_session::impl_lint_pass; -use rustc_span::symbol::sym; use rustc_span::{Span, SyntaxContext}; declare_clippy_lint! { @@ -86,9 +85,9 @@ impl<'tcx> LateLintPass<'tcx> for AssigningClones { && ctxt.is_root() && let which_trait = match fn_name { sym::clone if is_diag_trait_item(cx, fn_id, sym::Clone) => CloneTrait::Clone, - _ if fn_name.as_str() == "to_owned" - && is_diag_trait_item(cx, fn_id, sym::ToOwned) - && self.msrv.meets(cx, msrvs::CLONE_INTO) => + sym::to_owned + if is_diag_trait_item(cx, fn_id, sym::ToOwned) + && self.msrv.meets(cx, msrvs::CLONE_INTO) => { CloneTrait::ToOwned }, @@ -112,7 +111,7 @@ impl<'tcx> LateLintPass<'tcx> for AssigningClones { && resolved_assoc_items.in_definition_order().any(|assoc| match which_trait { CloneTrait::Clone => assoc.name() == sym::clone_from, - CloneTrait::ToOwned => assoc.name().as_str() == "clone_into", + CloneTrait::ToOwned => assoc.name() == sym::clone_into, } ) && !clone_source_borrows_from_dest(cx, lhs, rhs.span) diff --git a/clippy_lints/src/attrs/blanket_clippy_restriction_lints.rs b/clippy_lints/src/attrs/blanket_clippy_restriction_lints.rs index 457692ed5dc53..4d64eec25d273 100644 --- a/clippy_lints/src/attrs/blanket_clippy_restriction_lints.rs +++ b/clippy_lints/src/attrs/blanket_clippy_restriction_lints.rs @@ -1,17 +1,15 @@ use super::BLANKET_CLIPPY_RESTRICTION_LINTS; use super::utils::extract_clippy_lint; use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_then}; +use clippy_utils::sym; use rustc_ast::MetaItemInner; use rustc_lint::{EarlyContext, Level, LintContext}; +use rustc_span::DUMMY_SP; use rustc_span::symbol::Symbol; -use rustc_span::{DUMMY_SP, sym}; pub(super) fn check(cx: &EarlyContext<'_>, name: Symbol, items: &[MetaItemInner]) { for lint in items { - if let Some(lint_name) = extract_clippy_lint(lint) - && lint_name.as_str() == "restriction" - && name != sym::allow - { + if name != sym::allow && extract_clippy_lint(lint) == Some(sym::restriction) { span_lint_and_help( cx, BLANKET_CLIPPY_RESTRICTION_LINTS, diff --git a/clippy_lints/src/attrs/deprecated_cfg_attr.rs b/clippy_lints/src/attrs/deprecated_cfg_attr.rs index 7fab97d3ea146..0edb50be8c778 100644 --- a/clippy_lints/src/attrs/deprecated_cfg_attr.rs +++ b/clippy_lints/src/attrs/deprecated_cfg_attr.rs @@ -73,7 +73,7 @@ fn check_deprecated_cfg_recursively(cx: &EarlyContext<'_>, attr: &rustc_ast::Met } fn check_cargo_clippy_attr(cx: &EarlyContext<'_>, item: &rustc_ast::MetaItem) { - if item.has_name(sym::feature) && item.value_str().is_some_and(|v| v.as_str() == "cargo-clippy") { + if item.has_name(sym::feature) && item.value_str() == Some(sym::cargo_clippy) { span_lint_and_sugg( cx, DEPRECATED_CLIPPY_CFG_ATTR, diff --git a/clippy_lints/src/attrs/deprecated_semver.rs b/clippy_lints/src/attrs/deprecated_semver.rs index 50943b36809d2..bd6459d6f9dbc 100644 --- a/clippy_lints/src/attrs/deprecated_semver.rs +++ b/clippy_lints/src/attrs/deprecated_semver.rs @@ -1,5 +1,6 @@ use super::DEPRECATED_SEMVER; use clippy_utils::diagnostics::span_lint; +use clippy_utils::sym; use rustc_ast::{LitKind, MetaItemLit}; use rustc_lint::EarlyContext; use rustc_span::Span; @@ -7,7 +8,7 @@ use semver::Version; pub(super) fn check(cx: &EarlyContext<'_>, span: Span, lit: &MetaItemLit) { if let LitKind::Str(is, _) = lit.kind - && (is.as_str() == "TBD" || Version::parse(is.as_str()).is_ok()) + && (is == sym::TBD || Version::parse(is.as_str()).is_ok()) { return; } diff --git a/clippy_lints/src/casts/cast_abs_to_unsigned.rs b/clippy_lints/src/casts/cast_abs_to_unsigned.rs index 164d3540253a0..ba31a51f738a6 100644 --- a/clippy_lints/src/casts/cast_abs_to_unsigned.rs +++ b/clippy_lints/src/casts/cast_abs_to_unsigned.rs @@ -1,6 +1,7 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::sugg::Sugg; +use clippy_utils::sym; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind}; use rustc_lint::LateContext; @@ -19,7 +20,7 @@ pub(super) fn check( if let ty::Int(from) = cast_from.kind() && let ty::Uint(to) = cast_to.kind() && let ExprKind::MethodCall(method_path, receiver, [], _) = cast_expr.kind - && method_path.ident.name.as_str() == "abs" + && method_path.ident.name == sym::abs && msrv.meets(cx, msrvs::UNSIGNED_ABS) { let span = if from.bit_width() == to.bit_width() { diff --git a/clippy_lints/src/casts/cast_possible_truncation.rs b/clippy_lints/src/casts/cast_possible_truncation.rs index 8742f5f1a0e0e..e92879b853d7b 100644 --- a/clippy_lints/src/casts/cast_possible_truncation.rs +++ b/clippy_lints/src/casts/cast_possible_truncation.rs @@ -1,9 +1,9 @@ use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::{span_lint, span_lint_and_then}; -use clippy_utils::expr_or_init; use clippy_utils::source::snippet; use clippy_utils::sugg::Sugg; use clippy_utils::ty::{get_discriminant_value, is_isize_or_usize}; +use clippy_utils::{expr_or_init, sym}; use rustc_abi::IntegerType; use rustc_errors::{Applicability, Diag}; use rustc_hir::def::{DefKind, Res}; @@ -73,7 +73,7 @@ fn apply_reductions(cx: &LateContext<'_>, nbits: u64, expr: &Expr<'_>, signed: b nbits }, ExprKind::MethodCall(method, _value, [], _) => { - if method.ident.name.as_str() == "signum" { + if method.ident.name == sym::signum { 0 // do not lint if cast comes from a `signum` function } else { nbits diff --git a/clippy_lints/src/casts/cast_ptr_alignment.rs b/clippy_lints/src/casts/cast_ptr_alignment.rs index 3fca0f8970770..01020f3eee21e 100644 --- a/clippy_lints/src/casts/cast_ptr_alignment.rs +++ b/clippy_lints/src/casts/cast_ptr_alignment.rs @@ -1,11 +1,10 @@ use clippy_utils::diagnostics::span_lint; use clippy_utils::ty::is_c_void; -use clippy_utils::{get_parent_expr, is_hir_ty_cfg_dependant}; +use clippy_utils::{get_parent_expr, is_hir_ty_cfg_dependant, sym}; use rustc_hir::{Expr, ExprKind, GenericArg}; use rustc_lint::LateContext; use rustc_middle::ty::layout::LayoutOf; use rustc_middle::ty::{self, Ty}; -use rustc_span::sym; use super::CAST_PTR_ALIGNMENT; @@ -20,7 +19,7 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>) { ); lint_cast_ptr_alignment(cx, expr, cast_from, cast_to); } else if let ExprKind::MethodCall(method_path, self_arg, [], _) = &expr.kind - && method_path.ident.name.as_str() == "cast" + && method_path.ident.name == sym::cast && let Some(generic_args) = method_path.args && let [GenericArg::Type(cast_to)] = generic_args.args // There probably is no obvious reason to do this, just to be consistent with `as` cases. diff --git a/clippy_lints/src/crate_in_macro_def.rs b/clippy_lints/src/crate_in_macro_def.rs index c2aac7ca090bb..19f62e8bf79c6 100644 --- a/clippy_lints/src/crate_in_macro_def.rs +++ b/clippy_lints/src/crate_in_macro_def.rs @@ -5,8 +5,8 @@ use rustc_ast::tokenstream::{TokenStream, TokenTree}; use rustc_errors::Applicability; use rustc_lint::{EarlyContext, EarlyLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::Span; use rustc_span::symbol::sym; +use rustc_span::{Span, kw}; declare_clippy_lint! { /// ### What it does @@ -105,12 +105,11 @@ fn contains_unhygienic_crate_reference(tts: &TokenStream) -> Option { fn is_crate_keyword(tt: &TokenTree) -> Option { if let TokenTree::Token( Token { - kind: TokenKind::Ident(symbol, _), + kind: TokenKind::Ident(kw::Crate, _), span, }, _, ) = tt - && symbol.as_str() == "crate" { Some(*span) } else { diff --git a/clippy_lints/src/floating_point_arithmetic.rs b/clippy_lints/src/floating_point_arithmetic.rs index d5f0659f8427f..553a00ed868d5 100644 --- a/clippy_lints/src/floating_point_arithmetic.rs +++ b/clippy_lints/src/floating_point_arithmetic.rs @@ -3,7 +3,7 @@ use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::{ eq_expr_value, get_parent_expr, higher, is_in_const_context, is_inherent_method_call, is_no_std_crate, - numeric_literal, peel_blocks, sugg, + numeric_literal, peel_blocks, sugg, sym, }; use rustc_errors::Applicability; use rustc_hir::{BinOpKind, Expr, ExprKind, PathSegment, UnOp}; @@ -435,7 +435,7 @@ fn check_expm1(cx: &LateContext<'_>, expr: &Expr<'_>) { rhs, ) = expr.kind && let ExprKind::MethodCall(path, self_arg, [], _) = &lhs.kind - && path.ident.name.as_str() == "exp" + && path.ident.name == sym::exp && cx.typeck_results().expr_ty(lhs).is_floating_point() && let Some(value) = ConstEvalCtxt::new(cx).eval(rhs) && (F32(1.0) == value || F64(1.0) == value) diff --git a/clippy_lints/src/from_raw_with_void_ptr.rs b/clippy_lints/src/from_raw_with_void_ptr.rs index c8828c9361576..5e2e2c9dbf725 100644 --- a/clippy_lints/src/from_raw_with_void_ptr.rs +++ b/clippy_lints/src/from_raw_with_void_ptr.rs @@ -1,12 +1,11 @@ use clippy_utils::diagnostics::span_lint_and_help; -use clippy_utils::path_def_id; use clippy_utils::ty::is_c_void; +use clippy_utils::{path_def_id, sym}; use rustc_hir::def_id::DefId; use rustc_hir::{Expr, ExprKind, QPath}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; use rustc_session::declare_lint_pass; -use rustc_span::sym; declare_clippy_lint! { /// ### What it does @@ -41,7 +40,7 @@ impl LateLintPass<'_> for FromRawWithVoidPtr { fn check_expr(&mut self, cx: &LateContext<'_>, expr: &Expr<'_>) { if let ExprKind::Call(box_from_raw, [arg]) = expr.kind && let ExprKind::Path(QPath::TypeRelative(ty, seg)) = box_from_raw.kind - && seg.ident.name.as_str() == "from_raw" + && seg.ident.name == sym::from_raw && let Some(type_str) = path_def_id(cx, ty).and_then(|id| def_id_matches_type(cx, id)) && let arg_kind = cx.typeck_results().expr_ty(arg).kind() && let ty::RawPtr(ty, _) = arg_kind diff --git a/clippy_lints/src/from_str_radix_10.rs b/clippy_lints/src/from_str_radix_10.rs index 25b087e8484f2..b816963cc825b 100644 --- a/clippy_lints/src/from_str_radix_10.rs +++ b/clippy_lints/src/from_str_radix_10.rs @@ -1,13 +1,12 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::sugg::Sugg; use clippy_utils::ty::{is_type_diagnostic_item, is_type_lang_item}; -use clippy_utils::{is_in_const_context, is_integer_literal}; +use clippy_utils::{is_in_const_context, is_integer_literal, sym}; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind, LangItem, PrimTy, QPath, TyKind, def}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::Ty; use rustc_session::declare_lint_pass; -use rustc_span::symbol::sym; declare_clippy_lint! { /// ### What it does @@ -53,7 +52,7 @@ impl<'tcx> LateLintPass<'tcx> for FromStrRadix10 { // check if the second part of the path indeed calls the associated // function `from_str_radix` - && pathseg.ident.name.as_str() == "from_str_radix" + && pathseg.ident.name == sym::from_str_radix // check if the first part of the path is some integer primitive && let TyKind::Path(ty_qpath) = &ty.kind diff --git a/clippy_lints/src/implicit_hasher.rs b/clippy_lints/src/implicit_hasher.rs index d2545e57652a8..4c17834c3adf9 100644 --- a/clippy_lints/src/implicit_hasher.rs +++ b/clippy_lints/src/implicit_hasher.rs @@ -10,10 +10,10 @@ use rustc_middle::hir::nested_filter; use rustc_middle::ty::{Ty, TypeckResults}; use rustc_session::declare_lint_pass; use rustc_span::Span; -use rustc_span::symbol::sym; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::source::{IntoSpan, SpanRangeExt, snippet}; +use clippy_utils::sym; use clippy_utils::ty::is_type_diagnostic_item; declare_clippy_lint! { @@ -326,6 +326,7 @@ impl<'tcx> Visitor<'tcx> for ImplicitHasherConstructorVisitor<'_, '_, 'tcx> { fn visit_expr(&mut self, e: &'tcx Expr<'_>) { if let ExprKind::Call(fun, args) = e.kind && let ExprKind::Path(QPath::TypeRelative(ty, method)) = fun.kind + && matches!(method.ident.name, sym::new | sym::with_capacity) && let TyKind::Path(QPath::Resolved(None, ty_path)) = ty.kind && let Some(ty_did) = ty_path.res.opt_def_id() { @@ -333,10 +334,11 @@ impl<'tcx> Visitor<'tcx> for ImplicitHasherConstructorVisitor<'_, '_, 'tcx> { return; } - if self.cx.tcx.is_diagnostic_item(sym::HashMap, ty_did) { - if method.ident.name == sym::new { + match (self.cx.tcx.get_diagnostic_name(ty_did), method.ident.name) { + (Some(sym::HashMap), sym::new) => { self.suggestions.insert(e.span, "HashMap::default()".to_string()); - } else if method.ident.name.as_str() == "with_capacity" { + }, + (Some(sym::HashMap), sym::with_capacity) => { self.suggestions.insert( e.span, format!( @@ -344,11 +346,11 @@ impl<'tcx> Visitor<'tcx> for ImplicitHasherConstructorVisitor<'_, '_, 'tcx> { snippet(self.cx, args[0].span, "capacity"), ), ); - } - } else if self.cx.tcx.is_diagnostic_item(sym::HashSet, ty_did) { - if method.ident.name == sym::new { + }, + (Some(sym::HashSet), sym::new) => { self.suggestions.insert(e.span, "HashSet::default()".to_string()); - } else if method.ident.name.as_str() == "with_capacity" { + }, + (Some(sym::HashSet), sym::with_capacity) => { self.suggestions.insert( e.span, format!( @@ -356,7 +358,8 @@ impl<'tcx> Visitor<'tcx> for ImplicitHasherConstructorVisitor<'_, '_, 'tcx> { snippet(self.cx, args[0].span, "capacity"), ), ); - } + }, + _ => {}, } } diff --git a/clippy_lints/src/infinite_iter.rs b/clippy_lints/src/infinite_iter.rs index 427a1f8255553..c4e10837bf192 100644 --- a/clippy_lints/src/infinite_iter.rs +++ b/clippy_lints/src/infinite_iter.rs @@ -1,10 +1,9 @@ use clippy_utils::diagnostics::span_lint; -use clippy_utils::higher; use clippy_utils::ty::{get_type_diagnostic_name, implements_trait}; +use clippy_utils::{higher, sym}; use rustc_hir::{BorrowKind, Closure, Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::symbol::sym; declare_clippy_lint! { /// ### What it does @@ -156,7 +155,7 @@ fn is_infinite(cx: &LateContext<'_>, expr: &Expr<'_>) -> Finiteness { .and(cap); } } - if method.ident.name.as_str() == "flat_map" + if method.ident.name == sym::flat_map && args.len() == 1 && let ExprKind::Closure(&Closure { body, .. }) = args[0].kind { @@ -224,7 +223,7 @@ fn complete_infinite_iter(cx: &LateContext<'_>, expr: &Expr<'_>) -> Finiteness { return MaybeInfinite.and(is_infinite(cx, receiver)); } } - if method.ident.name.as_str() == "last" && args.is_empty() { + if method.ident.name == sym::last && args.is_empty() { let not_double_ended = cx .tcx .get_diagnostic_item(sym::DoubleEndedIterator) @@ -232,7 +231,7 @@ fn complete_infinite_iter(cx: &LateContext<'_>, expr: &Expr<'_>) -> Finiteness { if not_double_ended { return is_infinite(cx, receiver); } - } else if method.ident.name.as_str() == "collect" { + } else if method.ident.name == sym::collect { let ty = cx.typeck_results().expr_ty(expr); if matches!( get_type_diagnostic_name(cx, ty), diff --git a/clippy_lints/src/iter_without_into_iter.rs b/clippy_lints/src/iter_without_into_iter.rs index 173232c511a57..900b20aa9cfb7 100644 --- a/clippy_lints/src/iter_without_into_iter.rs +++ b/clippy_lints/src/iter_without_into_iter.rs @@ -1,14 +1,13 @@ use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::get_parent_as_impl; use clippy_utils::source::snippet; use clippy_utils::ty::{deref_chain, get_adt_inherent_method, implements_trait, make_normalized_projection}; +use clippy_utils::{get_parent_as_impl, sym}; use rustc_ast::Mutability; use rustc_errors::Applicability; use rustc_hir::{FnRetTy, ImplItemKind, ImplicitSelfKind, ItemKind, TyKind}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_middle::ty::{self, Ty}; use rustc_session::declare_lint_pass; -use rustc_span::sym; declare_clippy_lint! { /// ### What it does @@ -141,7 +140,7 @@ impl LateLintPass<'_> for IterWithoutIntoIter { ty.peel_refs().is_slice() || get_adt_inherent_method(cx, ty, expected_method_name).is_some() }) && let Some(iter_assoc_span) = imp.items.iter().find_map(|item| { - if item.ident.name.as_str() == "IntoIter" { + if item.ident.name == sym::IntoIter { Some(cx.tcx.hir_impl_item(item.id).expect_type().span) } else { None diff --git a/clippy_lints/src/len_zero.rs b/clippy_lints/src/len_zero.rs index 8c71d34c95f6d..aded31971cec0 100644 --- a/clippy_lints/src/len_zero.rs +++ b/clippy_lints/src/len_zero.rs @@ -2,7 +2,9 @@ use clippy_utils::diagnostics::{span_lint, span_lint_and_sugg, span_lint_and_the use clippy_utils::source::{SpanRangeExt, snippet_with_context}; use clippy_utils::sugg::{Sugg, has_enclosing_paren}; use clippy_utils::ty::implements_trait; -use clippy_utils::{fulfill_or_allowed, get_item_name, get_parent_as_impl, is_trait_method, peel_ref_operators, sym}; +use clippy_utils::{ + fulfill_or_allowed, get_parent_as_impl, is_trait_method, parent_item_name, peel_ref_operators, sym, +}; use rustc_ast::ast::LitKind; use rustc_errors::Applicability; use rustc_hir::def::Res; @@ -533,9 +535,7 @@ fn check_cmp(cx: &LateContext<'_>, span: Span, method: &Expr<'_>, lit: &Expr<'_> if let (&ExprKind::MethodCall(method_path, receiver, [], _), ExprKind::Lit(lit)) = (&method.kind, &lit.kind) { // check if we are in an is_empty() method - if let Some(name) = get_item_name(cx, method) - && name.as_str() == "is_empty" - { + if parent_item_name(cx, method) == Some(sym::is_empty) { return; } diff --git a/clippy_lints/src/loops/same_item_push.rs b/clippy_lints/src/loops/same_item_push.rs index 661b4b590d8fb..388034c39f522 100644 --- a/clippy_lints/src/loops/same_item_push.rs +++ b/clippy_lints/src/loops/same_item_push.rs @@ -3,7 +3,7 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::msrvs::Msrv; use clippy_utils::source::snippet_with_context; use clippy_utils::ty::{implements_trait, is_type_diagnostic_item}; -use clippy_utils::{msrvs, path_to_local, std_or_core}; +use clippy_utils::{msrvs, path_to_local, std_or_core, sym}; use rustc_data_structures::fx::FxHashSet; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; @@ -11,7 +11,6 @@ use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{BindingMode, Block, Expr, ExprKind, HirId, Mutability, Node, Pat, PatKind, Stmt, StmtKind}; use rustc_lint::LateContext; use rustc_span::SyntaxContext; -use rustc_span::symbol::sym; /// Detects for loop pushing the same item into a Vec pub(super) fn check<'tcx>( @@ -187,8 +186,8 @@ fn get_vec_push<'tcx>( // Extract method being called and figure out the parameters for the method call && let ExprKind::MethodCall(path, self_expr, [pushed_item], _) = &semi_stmt.kind // Check that the method being called is push() on a Vec + && path.ident.name == sym::push && is_type_diagnostic_item(cx, cx.typeck_results().expr_ty(self_expr), sym::Vec) - && path.ident.name.as_str() == "push" { return Some((self_expr, pushed_item, semi_stmt.span.ctxt())); } diff --git a/clippy_lints/src/manual_hash_one.rs b/clippy_lints/src/manual_hash_one.rs index f71264a93ca84..b3ee45cc02098 100644 --- a/clippy_lints/src/manual_hash_one.rs +++ b/clippy_lints/src/manual_hash_one.rs @@ -3,12 +3,11 @@ use clippy_utils::diagnostics::span_lint_hir_and_then; use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::SpanRangeExt; use clippy_utils::visitors::{is_local_used, local_used_once}; -use clippy_utils::{is_trait_method, path_to_local_id}; +use clippy_utils::{is_trait_method, path_to_local_id, sym}; use rustc_errors::Applicability; use rustc_hir::{BindingMode, ExprKind, LetStmt, Node, PatKind, StmtKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::impl_lint_pass; -use rustc_span::sym; declare_clippy_lint! { /// ### What it does @@ -66,7 +65,7 @@ impl LateLintPass<'_> for ManualHashOne { && let Some(init) = local.init && !init.span.from_expansion() && let ExprKind::MethodCall(seg, build_hasher, [], _) = init.kind - && seg.ident.name.as_str() == "build_hasher" + && seg.ident.name == sym::build_hasher && let Node::Stmt(local_stmt) = cx.tcx.parent_hir_node(local.hir_id) && let Node::Block(block) = cx.tcx.parent_hir_node(local_stmt.hir_id) @@ -94,7 +93,7 @@ impl LateLintPass<'_> for ManualHashOne { && let Node::Expr(finish_expr) = cx.tcx.parent_hir_node(path_expr.hir_id) && !finish_expr.span.from_expansion() && let ExprKind::MethodCall(seg, _, [], _) = finish_expr.kind - && seg.ident.name.as_str() == "finish" + && seg.ident.name == sym::finish && self.msrv.meets(cx, msrvs::BUILD_HASHER_HASH_ONE) { diff --git a/clippy_lints/src/manual_is_ascii_check.rs b/clippy_lints/src/manual_is_ascii_check.rs index 8ab49bd2ea8ea..ac8c88f02057b 100644 --- a/clippy_lints/src/manual_is_ascii_check.rs +++ b/clippy_lints/src/manual_is_ascii_check.rs @@ -3,7 +3,7 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::macros::matching_root_macro_call; use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::sugg::Sugg; -use clippy_utils::{higher, is_in_const_context, path_to_local, peel_ref_operators}; +use clippy_utils::{higher, is_in_const_context, path_to_local, peel_ref_operators, sym}; use rustc_ast::LitKind::{Byte, Char}; use rustc_ast::ast::RangeLimits; use rustc_errors::Applicability; @@ -11,7 +11,7 @@ use rustc_hir::{Expr, ExprKind, Lit, Node, Param, PatExpr, PatExprKind, PatKind, use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::{self, Ty}; use rustc_session::impl_lint_pass; -use rustc_span::{Span, sym}; +use rustc_span::Span; declare_clippy_lint! { /// ### What it does @@ -103,7 +103,7 @@ impl<'tcx> LateLintPass<'tcx> for ManualIsAsciiCheck { check_is_ascii(cx, macro_call.span, recv, &range, None); } } else if let ExprKind::MethodCall(path, receiver, [arg], ..) = expr.kind - && path.ident.name.as_str() == "contains" + && path.ident.name == sym::contains && let Some(higher::Range { start: Some(start), end: Some(end), diff --git a/clippy_lints/src/manual_option_as_slice.rs b/clippy_lints/src/manual_option_as_slice.rs index e4ad3953b671d..b365dbf088f58 100644 --- a/clippy_lints/src/manual_option_as_slice.rs +++ b/clippy_lints/src/manual_option_as_slice.rs @@ -1,14 +1,14 @@ use clippy_config::Conf; use clippy_utils::diagnostics::{span_lint, span_lint_and_sugg}; use clippy_utils::msrvs::Msrv; -use clippy_utils::{is_none_arm, msrvs, peel_hir_expr_refs}; +use clippy_utils::{is_none_arm, msrvs, peel_hir_expr_refs, sym}; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; use rustc_hir::{Arm, Expr, ExprKind, LangItem, Pat, PatKind, QPath, is_range_literal}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; use rustc_session::impl_lint_pass; -use rustc_span::{Span, Symbol, sym}; +use rustc_span::{Span, Symbol}; declare_clippy_lint! { /// ### What it does @@ -76,7 +76,7 @@ impl LateLintPass<'_> for ManualOptionAsSlice { } }, ExprKind::MethodCall(seg, callee, [], _) => { - if seg.ident.name.as_str() == "unwrap_or_default" { + if seg.ident.name == sym::unwrap_or_default { check_map(cx, callee, span, self.msrv); } }, diff --git a/clippy_lints/src/methods/double_ended_iterator_last.rs b/clippy_lints/src/methods/double_ended_iterator_last.rs index e666f31217cc8..6d841853fbe5f 100644 --- a/clippy_lints/src/methods/double_ended_iterator_last.rs +++ b/clippy_lints/src/methods/double_ended_iterator_last.rs @@ -1,11 +1,11 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::ty::{has_non_owning_mutable_access, implements_trait}; -use clippy_utils::{is_mutable, is_trait_method, path_to_local}; +use clippy_utils::{is_mutable, is_trait_method, path_to_local, sym}; use rustc_errors::Applicability; use rustc_hir::{Expr, Node, PatKind}; use rustc_lint::LateContext; use rustc_middle::ty::Instance; -use rustc_span::{Span, sym}; +use rustc_span::Span; use super::DOUBLE_ENDED_ITERATOR_LAST; @@ -24,7 +24,7 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &'_ Expr<'_>, self_expr: &'_ Exp && let Ok(Some(fn_def)) = Instance::try_resolve(cx.tcx, cx.typing_env(), id, args) // find the provided definition of Iterator::last && let Some(item) = cx.tcx.get_diagnostic_item(sym::Iterator) - && let Some(last_def) = cx.tcx.provided_trait_methods(item).find(|m| m.name().as_str() == "last") + && let Some(last_def) = cx.tcx.provided_trait_methods(item).find(|m| m.name() == sym::last) // if the resolved method is the same as the provided definition && fn_def.def_id() == last_def.def_id && let self_ty = cx.typeck_results().expr_ty(self_expr) diff --git a/clippy_lints/src/methods/filter_map.rs b/clippy_lints/src/methods/filter_map.rs index da123f13d46fa..4dd54cf197450 100644 --- a/clippy_lints/src/methods/filter_map.rs +++ b/clippy_lints/src/methods/filter_map.rs @@ -233,12 +233,12 @@ impl<'tcx> OffendingFilterExpr<'tcx> { // the latter only calls `effect` once let side_effect_expr_span = receiver.can_have_side_effects().then_some(receiver.span); - if cx.tcx.is_diagnostic_item(sym::Option, recv_ty.did()) && path.ident.name.as_str() == "is_some" { + if cx.tcx.is_diagnostic_item(sym::Option, recv_ty.did()) && path.ident.name == sym::is_some { Some(Self::IsSome { receiver, side_effect_expr_span, }) - } else if cx.tcx.is_diagnostic_item(sym::Result, recv_ty.did()) && path.ident.name.as_str() == "is_ok" { + } else if cx.tcx.is_diagnostic_item(sym::Result, recv_ty.did()) && path.ident.name == sym::is_ok { Some(Self::IsOk { receiver, side_effect_expr_span, diff --git a/clippy_lints/src/methods/needless_character_iteration.rs b/clippy_lints/src/methods/needless_character_iteration.rs index 743aacf058856..f528f7f065c6e 100644 --- a/clippy_lints/src/methods/needless_character_iteration.rs +++ b/clippy_lints/src/methods/needless_character_iteration.rs @@ -9,7 +9,7 @@ use super::utils::get_last_chain_binding_hir_id; use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::paths::CHAR_IS_ASCII; use clippy_utils::source::SpanRangeExt; -use clippy_utils::{match_def_path, path_to_local_id, peel_blocks}; +use clippy_utils::{match_def_path, path_to_local_id, peel_blocks, sym}; fn peels_expr_ref<'a, 'tcx>(mut expr: &'a Expr<'tcx>) -> &'a Expr<'tcx> { while let ExprKind::AddrOf(_, _, e) = expr.kind { @@ -32,7 +32,7 @@ fn handle_expr( // If we have `!is_ascii`, then only `.any()` should warn. And if the condition is // `is_ascii`, then only `.all()` should warn. if revert != is_all - && method.ident.name.as_str() == "is_ascii" + && method.ident.name == sym::is_ascii && path_to_local_id(receiver, first_param) && let char_arg_ty = cx.typeck_results().expr_ty_adjusted(receiver).peel_refs() && *char_arg_ty.kind() == ty::Char @@ -102,7 +102,7 @@ pub(super) fn check(cx: &LateContext<'_>, call_expr: &Expr<'_>, recv: &Expr<'_>, && let body = cx.tcx.hir_body(body) && let Some(first_param) = body.params.first() && let ExprKind::MethodCall(method, mut recv, [], _) = recv.kind - && method.ident.name.as_str() == "chars" + && method.ident.name == sym::chars && let str_ty = cx.typeck_results().expr_ty_adjusted(recv).peel_refs() && *str_ty.kind() == ty::Str { diff --git a/clippy_lints/src/methods/needless_collect.rs b/clippy_lints/src/methods/needless_collect.rs index 6efaba525e3ed..cd22583b8a253 100644 --- a/clippy_lints/src/methods/needless_collect.rs +++ b/clippy_lints/src/methods/needless_collect.rs @@ -9,7 +9,7 @@ use clippy_utils::ty::{ }; use clippy_utils::{ CaptureKind, can_move_expr_to_closure, fn_def_id, get_enclosing_block, higher, is_trait_method, path_to_local, - path_to_local_id, + path_to_local_id, sym, }; use rustc_data_structures::fx::FxHashMap; use rustc_errors::{Applicability, MultiSpan}; @@ -20,8 +20,8 @@ use rustc_hir::{ use rustc_lint::LateContext; use rustc_middle::hir::nested_filter; use rustc_middle::ty::{self, AssocTag, ClauseKind, EarlyBinder, GenericArg, GenericArgKind, Ty}; +use rustc_span::Span; use rustc_span::symbol::Ident; -use rustc_span::{Span, sym}; const NEEDLESS_COLLECT_MSG: &str = "avoid using `collect()` when not needed"; @@ -339,7 +339,7 @@ impl<'tcx> Visitor<'tcx> for IterFunctionVisitor<'_, 'tcx> { // Check function calls on our collection if let ExprKind::MethodCall(method_name, recv, args, _) = &expr.kind { if args.is_empty() - && method_name.ident.name.as_str() == "collect" + && method_name.ident.name == sym::collect && is_trait_method(self.cx, expr, sym::Iterator) { self.current_mutably_captured_ids = get_captured_ids(self.cx, self.cx.typeck_results().expr_ty(recv)); diff --git a/clippy_lints/src/methods/read_line_without_trim.rs b/clippy_lints/src/methods/read_line_without_trim.rs index fe999a3b5f8f2..407f2e80aff25 100644 --- a/clippy_lints/src/methods/read_line_without_trim.rs +++ b/clippy_lints/src/methods/read_line_without_trim.rs @@ -1,17 +1,16 @@ use std::ops::ControlFlow; use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::get_parent_expr; use clippy_utils::source::snippet; use clippy_utils::ty::is_type_diagnostic_item; use clippy_utils::visitors::for_each_local_use_after_expr; +use clippy_utils::{get_parent_expr, sym}; use rustc_ast::LitKind; use rustc_errors::Applicability; use rustc_hir::def::Res; use rustc_hir::{BinOpKind, Expr, ExprKind, QPath}; use rustc_lint::LateContext; use rustc_middle::ty::{self, Ty}; -use rustc_span::sym; use super::READ_LINE_WITHOUT_TRIM; @@ -44,7 +43,7 @@ pub fn check(cx: &LateContext<'_>, call: &Expr<'_>, recv: &Expr<'_>, arg: &Expr< if let Some(parent) = get_parent_expr(cx, expr) { let data = if let ExprKind::MethodCall(segment, recv, args, span) = parent.kind { if args.is_empty() - && segment.ident.name.as_str() == "parse" + && segment.ident.name == sym::parse && let parse_result_ty = cx.typeck_results().expr_ty(parent) && is_type_diagnostic_item(cx, parse_result_ty, sym::Result) && let ty::Adt(_, substs) = parse_result_ty.kind() @@ -58,7 +57,7 @@ pub fn check(cx: &LateContext<'_>, call: &Expr<'_>, recv: &Expr<'_>, arg: &Expr< "calling `.parse()` on a string without trimming the trailing newline character", "checking", )) - } else if segment.ident.name.as_str() == "ends_with" + } else if segment.ident.name == sym::ends_with && recv.span == expr.span && let [arg] = args && expr_is_string_literal_without_trailing_newline(arg) diff --git a/clippy_lints/src/methods/str_split.rs b/clippy_lints/src/methods/str_split.rs index 3586e11f56ab2..fb4ac7b3613dd 100644 --- a/clippy_lints/src/methods/str_split.rs +++ b/clippy_lints/src/methods/str_split.rs @@ -1,5 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet_with_context; +use clippy_utils::sym; use clippy_utils::visitors::is_const_evaluatable; use rustc_ast::ast::LitKind; use rustc_errors::Applicability; @@ -19,7 +20,7 @@ pub(super) fn check<'a>(cx: &LateContext<'a>, expr: &'_ Expr<'_>, split_recv: &' && !is_const_evaluatable(cx, trim_recv) && let ExprKind::Lit(split_lit) = split_arg.kind && (matches!(split_lit.node, LitKind::Char('\n')) - || matches!(split_lit.node, LitKind::Str(sym, _) if (sym.as_str() == "\n" || sym.as_str() == "\r\n"))) + || matches!(split_lit.node, LitKind::Str(sym::LF | sym::CRLF, _))) { let mut app = Applicability::MaybeIncorrect; span_lint_and_sugg( diff --git a/clippy_lints/src/methods/unnecessary_filter_map.rs b/clippy_lints/src/methods/unnecessary_filter_map.rs index f920f306bc1ed..79ed352193fd7 100644 --- a/clippy_lints/src/methods/unnecessary_filter_map.rs +++ b/clippy_lints/src/methods/unnecessary_filter_map.rs @@ -3,13 +3,12 @@ use clippy_utils::diagnostics::span_lint; use clippy_utils::ty::is_copy; use clippy_utils::usage::mutated_variables; use clippy_utils::visitors::{Descend, for_each_expr_without_closures}; -use clippy_utils::{is_res_lang_ctor, is_trait_method, path_res, path_to_local_id}; +use clippy_utils::{is_res_lang_ctor, is_trait_method, path_res, path_to_local_id, sym}; use core::ops::ControlFlow; use rustc_hir as hir; use rustc_hir::LangItem::{OptionNone, OptionSome}; use rustc_lint::LateContext; use rustc_middle::ty; -use rustc_span::sym; use super::{UNNECESSARY_FILTER_MAP, UNNECESSARY_FIND_MAP}; @@ -95,7 +94,7 @@ fn check_expression<'tcx>(cx: &LateContext<'tcx>, arg_id: hir::HirId, expr: &'tc (true, true) }, hir::ExprKind::MethodCall(segment, recv, [arg], _) => { - if segment.ident.name.as_str() == "then_some" + if segment.ident.name == sym::then_some && cx.typeck_results().expr_ty(recv).is_bool() && path_to_local_id(arg, arg_id) { diff --git a/clippy_lints/src/methods/unnecessary_to_owned.rs b/clippy_lints/src/methods/unnecessary_to_owned.rs index 206b0a8ae3cd6..87bb8d46a1d6a 100644 --- a/clippy_lints/src/methods/unnecessary_to_owned.rs +++ b/clippy_lints/src/methods/unnecessary_to_owned.rs @@ -7,7 +7,7 @@ use clippy_utils::ty::{get_iterator_item_ty, implements_trait, is_copy, is_type_ use clippy_utils::visitors::find_all_ret_expressions; use clippy_utils::{ fn_def_id, get_parent_expr, is_diag_item_method, is_diag_trait_item, is_expr_temporary_value, peel_middle_ty_refs, - return_ty, + return_ty, sym, }; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; @@ -20,7 +20,7 @@ use rustc_middle::ty::adjustment::{Adjust, Adjustment, OverloadedDeref}; use rustc_middle::ty::{ self, ClauseKind, GenericArg, GenericArgKind, GenericArgsRef, ParamTy, ProjectionPredicate, TraitPredicate, Ty, }; -use rustc_span::{Symbol, sym}; +use rustc_span::Symbol; use rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt as _; use rustc_trait_selection::traits::{Obligation, ObligationCause}; @@ -312,8 +312,7 @@ fn check_string_from_utf8<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>, /// call of a `to_owned`-like function is unnecessary. fn check_split_call_arg(cx: &LateContext<'_>, expr: &Expr<'_>, method_name: Symbol, receiver: &Expr<'_>) -> bool { if let Some(parent) = get_parent_expr(cx, expr) - && let Some((fn_name, argument_expr)) = get_fn_name_and_arg(cx, parent) - && fn_name.as_str() == "split" + && let Some((sym::split, argument_expr)) = get_fn_name_and_arg(cx, parent) && let Some(receiver_snippet) = receiver.span.get_source_text(cx) && let Some(arg_snippet) = argument_expr.span.get_source_text(cx) { @@ -614,8 +613,7 @@ fn has_lifetime(ty: Ty<'_>) -> bool { /// Returns true if the named method is `Iterator::cloned` or `Iterator::copied`. fn is_cloned_or_copied(cx: &LateContext<'_>, method_name: Symbol, method_def_id: DefId) -> bool { - (method_name.as_str() == "cloned" || method_name.as_str() == "copied") - && is_diag_trait_item(cx, method_def_id, sym::Iterator) + matches!(method_name, sym::cloned | sym::copied) && is_diag_trait_item(cx, method_def_id, sym::Iterator) } /// Returns true if the named method can be used to convert the receiver to its "owned" @@ -628,7 +626,7 @@ fn is_to_owned_like<'a>(cx: &LateContext<'a>, call_expr: &Expr<'a>, method_name: /// Returns true if the named method is `Cow::into_owned`. fn is_cow_into_owned(cx: &LateContext<'_>, method_name: Symbol, method_def_id: DefId) -> bool { - method_name.as_str() == "into_owned" && is_diag_item_method(cx, method_def_id, sym::Cow) + method_name == sym::into_owned && is_diag_item_method(cx, method_def_id, sym::Cow) } /// Returns true if the named method is `ToString::to_string` and it's called on a type that diff --git a/clippy_lints/src/minmax.rs b/clippy_lints/src/minmax.rs index ed89b3b34386f..64eafc0ebccdc 100644 --- a/clippy_lints/src/minmax.rs +++ b/clippy_lints/src/minmax.rs @@ -1,10 +1,9 @@ use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::span_lint; -use clippy_utils::is_trait_method; +use clippy_utils::{is_trait_method, sym}; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::sym; use std::cmp::Ordering::{Equal, Greater, Less}; declare_clippy_lint! { @@ -79,12 +78,10 @@ fn min_max<'a, 'tcx>(cx: &LateContext<'tcx>, expr: &'a Expr<'a>) -> Option<(MinM }, ExprKind::MethodCall(path, receiver, args @ [_], _) => { if cx.typeck_results().expr_ty(receiver).is_floating_point() || is_trait_method(cx, expr, sym::Ord) { - if path.ident.name.as_str() == "max" { - fetch_const(cx, Some(receiver), args, MinMax::Max) - } else if path.ident.name.as_str() == "min" { - fetch_const(cx, Some(receiver), args, MinMax::Min) - } else { - None + match path.ident.name { + sym::max => fetch_const(cx, Some(receiver), args, MinMax::Max), + sym::min => fetch_const(cx, Some(receiver), args, MinMax::Min), + _ => None, } } else { None diff --git a/clippy_lints/src/missing_fields_in_debug.rs b/clippy_lints/src/missing_fields_in_debug.rs index 1932d2d5f9785..be7dd74fd62b9 100644 --- a/clippy_lints/src/missing_fields_in_debug.rs +++ b/clippy_lints/src/missing_fields_in_debug.rs @@ -1,9 +1,9 @@ use std::ops::ControlFlow; use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::is_path_lang_item; use clippy_utils::ty::is_type_diagnostic_item; use clippy_utils::visitors::{Visitable, for_each_expr}; +use clippy_utils::{is_path_lang_item, sym}; use rustc_ast::LitKind; use rustc_data_structures::fx::FxHashSet; use rustc_hir::def::{DefKind, Res}; @@ -13,7 +13,7 @@ use rustc_hir::{ use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::{Ty, TypeckResults}; use rustc_session::declare_lint_pass; -use rustc_span::{Span, Symbol, sym}; +use rustc_span::{Span, Symbol}; declare_clippy_lint! { /// ### What it does @@ -116,7 +116,7 @@ fn should_lint<'tcx>( if path.ident.name == sym::debug_struct && is_type_diagnostic_item(cx, recv_ty, sym::Formatter) { has_debug_struct = true; - } else if path.ident.name.as_str() == "finish_non_exhaustive" + } else if path.ident.name == sym::finish_non_exhaustive && is_type_diagnostic_item(cx, recv_ty, sym::DebugStruct) { has_finish_non_exhaustive = true; diff --git a/clippy_lints/src/mixed_read_write_in_expression.rs b/clippy_lints/src/mixed_read_write_in_expression.rs index 0e08558596283..d9f4fb271fb4b 100644 --- a/clippy_lints/src/mixed_read_write_in_expression.rs +++ b/clippy_lints/src/mixed_read_write_in_expression.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::{span_lint, span_lint_and_then}; use clippy_utils::macros::root_macro_call_first_node; -use clippy_utils::{get_parent_expr, path_to_local, path_to_local_id}; +use clippy_utils::{get_parent_expr, path_to_local, path_to_local_id, sym}; use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{BinOpKind, Block, Expr, ExprKind, HirId, LetStmt, Node, Stmt, StmtKind}; use rustc_lint::{LateContext, LateLintPass}; @@ -136,7 +136,7 @@ impl<'tcx> DivergenceVisitor<'_, 'tcx> { fn report_diverging_sub_expr(&mut self, e: &Expr<'_>) { if let Some(macro_call) = root_macro_call_first_node(self.cx, e) - && self.cx.tcx.item_name(macro_call.def_id).as_str() == "todo" + && self.cx.tcx.is_diagnostic_item(sym::todo_macro, macro_call.def_id) { return; } diff --git a/clippy_lints/src/needless_for_each.rs b/clippy_lints/src/needless_for_each.rs index 90b27f5dbac82..7dd96f1f037fd 100644 --- a/clippy_lints/src/needless_for_each.rs +++ b/clippy_lints/src/needless_for_each.rs @@ -3,12 +3,12 @@ use rustc_hir::intravisit::{Visitor, walk_expr}; use rustc_hir::{Block, BlockCheckMode, Closure, Expr, ExprKind, Stmt, StmtKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::{Span, sym}; +use rustc_span::Span; use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::is_trait_method; use clippy_utils::source::snippet_with_applicability; use clippy_utils::ty::has_iter_method; +use clippy_utils::{is_trait_method, sym}; declare_clippy_lint! { /// ### What it does @@ -64,7 +64,7 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessForEach { iter_recv.kind, ExprKind::Array(..) | ExprKind::Call(..) | ExprKind::Path(..) ) - && method_name.ident.name.as_str() == "for_each" + && method_name.ident.name == sym::for_each && is_trait_method(cx, expr, sym::Iterator) // Checks the type of the `iter` method receiver is NOT a user defined type. && has_iter_method(cx, cx.typeck_results().expr_ty(iter_recv)).is_some() diff --git a/clippy_lints/src/non_octal_unix_permissions.rs b/clippy_lints/src/non_octal_unix_permissions.rs index 852c3885f5689..23a1622f30fff 100644 --- a/clippy_lints/src/non_octal_unix_permissions.rs +++ b/clippy_lints/src/non_octal_unix_permissions.rs @@ -1,10 +1,10 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::{SpanRangeExt, snippet_with_applicability}; +use clippy_utils::sym; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::sym; declare_clippy_lint! { /// ### What it does @@ -43,12 +43,12 @@ impl<'tcx> LateLintPass<'tcx> for NonOctalUnixPermissions { match &expr.kind { ExprKind::MethodCall(path, func, [param], _) => { if let Some(adt) = cx.typeck_results().expr_ty(func).peel_refs().ty_adt_def() - && ((path.ident.name.as_str() == "mode" + && ((path.ident.name == sym::mode && matches!( cx.tcx.get_diagnostic_name(adt.did()), Some(sym::FsOpenOptions | sym::DirBuilder) )) - || (path.ident.name.as_str() == "set_mode" + || (path.ident.name == sym::set_mode && cx.tcx.is_diagnostic_item(sym::FsPermissions, adt.did()))) && let ExprKind::Lit(_) = param.kind && param.span.eq_ctxt(expr.span) diff --git a/clippy_lints/src/non_zero_suggestions.rs b/clippy_lints/src/non_zero_suggestions.rs index 635f5678e2a65..1b8ab1bdedf8a 100644 --- a/clippy_lints/src/non_zero_suggestions.rs +++ b/clippy_lints/src/non_zero_suggestions.rs @@ -1,12 +1,12 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::snippet; +use clippy_utils::sym; use rustc_ast::ast::BinOpKind; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::{self, Ty}; use rustc_session::declare_lint_pass; -use rustc_span::symbol::sym; declare_clippy_lint! { /// ### What it does @@ -72,7 +72,7 @@ fn check_non_zero_conversion(cx: &LateContext<'_>, expr: &Expr<'_>, applicabilit && let ExprKind::Path(qpath) = &func.kind && let Some(def_id) = cx.qpath_res(qpath, func.hir_id).opt_def_id() && let ExprKind::MethodCall(rcv_path, receiver, [], _) = &arg.kind - && rcv_path.ident.name.as_str() == "get" + && rcv_path.ident.name == sym::get { let fn_name = cx.tcx.item_name(def_id); let target_ty = cx.typeck_results().expr_ty(expr); diff --git a/clippy_lints/src/operators/float_cmp.rs b/clippy_lints/src/operators/float_cmp.rs index 01dc6a27c33e3..ded161c8576a1 100644 --- a/clippy_lints/src/operators/float_cmp.rs +++ b/clippy_lints/src/operators/float_cmp.rs @@ -1,7 +1,7 @@ use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::span_lint_and_then; -use clippy_utils::get_item_name; use clippy_utils::sugg::Sugg; +use clippy_utils::{parent_item_name, sym}; use rustc_errors::Applicability; use rustc_hir::{BinOpKind, Expr, ExprKind, UnOp}; use rustc_lint::LateContext; @@ -34,7 +34,7 @@ pub(crate) fn check<'tcx>( return; } - if let Some(name) = get_item_name(cx, expr) { + if let Some(name) = parent_item_name(cx, expr) { let name = name.as_str(); if name == "eq" || name == "ne" || name == "is_nan" || name.starts_with("eq_") || name.ends_with("_eq") { return; @@ -106,7 +106,7 @@ fn is_signum(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { } if let ExprKind::MethodCall(method_name, self_arg, [], _) = expr.kind - && method_name.ident.name.as_str() == "signum" + && method_name.ident.name == sym::signum // Check that the receiver of the signum() is a float (expressions[0] is the receiver of // the method call) { diff --git a/clippy_lints/src/permissions_set_readonly_false.rs b/clippy_lints/src/permissions_set_readonly_false.rs index dc142b6e15771..da56a785007c4 100644 --- a/clippy_lints/src/permissions_set_readonly_false.rs +++ b/clippy_lints/src/permissions_set_readonly_false.rs @@ -1,10 +1,10 @@ use clippy_utils::diagnostics::span_lint_and_then; +use clippy_utils::sym; use clippy_utils::ty::is_type_diagnostic_item; use rustc_ast::ast::LitKind; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::sym; declare_clippy_lint! { /// ### What it does @@ -33,7 +33,7 @@ impl<'tcx> LateLintPass<'tcx> for PermissionsSetReadonlyFalse { if let ExprKind::MethodCall(path, receiver, [arg], _) = &expr.kind && let ExprKind::Lit(lit) = &arg.kind && LitKind::Bool(false) == lit.node - && path.ident.name.as_str() == "set_readonly" + && path.ident.name == sym::set_readonly && is_type_diagnostic_item(cx, cx.typeck_results().expr_ty(receiver), sym::FsPermissions) { span_lint_and_then( diff --git a/clippy_lints/src/ptr_offset_with_cast.rs b/clippy_lints/src/ptr_offset_with_cast.rs index 7f74a2fff9f20..d8d813f9846d5 100644 --- a/clippy_lints/src/ptr_offset_with_cast.rs +++ b/clippy_lints/src/ptr_offset_with_cast.rs @@ -1,10 +1,10 @@ use clippy_utils::diagnostics::{span_lint, span_lint_and_sugg}; use clippy_utils::source::SpanRangeExt; +use clippy_utils::sym; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::sym; use std::fmt; declare_clippy_lint! { @@ -97,7 +97,7 @@ fn expr_as_ptr_offset_call<'tcx>( if path_segment.ident.name == sym::offset { return Some((arg_0, arg_1, Method::Offset)); } - if path_segment.ident.name.as_str() == "wrapping_offset" { + if path_segment.ident.name == sym::wrapping_offset { return Some((arg_0, arg_1, Method::WrappingOffset)); } } diff --git a/clippy_lints/src/question_mark.rs b/clippy_lints/src/question_mark.rs index d318897443da5..a41afbb800f67 100644 --- a/clippy_lints/src/question_mark.rs +++ b/clippy_lints/src/question_mark.rs @@ -10,7 +10,7 @@ use clippy_utils::ty::{implements_trait, is_type_diagnostic_item}; use clippy_utils::{ eq_expr_value, higher, is_else_clause, is_in_const_context, is_lint_allowed, is_path_lang_item, is_res_lang_ctor, pat_and_expr_can_be_question_mark, path_res, path_to_local, path_to_local_id, peel_blocks, peel_blocks_with_stmt, - span_contains_cfg, span_contains_comment, + span_contains_cfg, span_contains_comment, sym, }; use rustc_errors::Applicability; use rustc_hir::LangItem::{self, OptionNone, OptionSome, ResultErr, ResultOk}; @@ -22,7 +22,6 @@ use rustc_hir::{ use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty::{self, Ty}; use rustc_session::impl_lint_pass; -use rustc_span::sym; use rustc_span::symbol::Symbol; declare_clippy_lint! { @@ -207,8 +206,8 @@ fn is_early_return(smbl: Symbol, cx: &LateContext<'_>, if_block: &IfBlockType<'_ is_type_diagnostic_item(cx, caller_ty, smbl) && expr_return_none_or_err(smbl, cx, if_then, caller, None) && match smbl { - sym::Option => call_sym.as_str() == "is_none", - sym::Result => call_sym.as_str() == "is_err", + sym::Option => call_sym == sym::is_none, + sym::Result => call_sym == sym::is_err, _ => false, } }, diff --git a/clippy_lints/src/slow_vector_initialization.rs b/clippy_lints/src/slow_vector_initialization.rs index d26288adb3919..30a5fe4db27e1 100644 --- a/clippy_lints/src/slow_vector_initialization.rs +++ b/clippy_lints/src/slow_vector_initialization.rs @@ -3,14 +3,13 @@ use clippy_utils::macros::matching_root_macro_call; use clippy_utils::sugg::Sugg; use clippy_utils::{ SpanlessEq, get_enclosing_block, is_integer_literal, is_path_diagnostic_item, path_to_local, path_to_local_id, - span_contains_comment, + span_contains_comment, sym, }; use rustc_errors::Applicability; use rustc_hir::intravisit::{Visitor, walk_block, walk_expr, walk_stmt}; use rustc_hir::{BindingMode, Block, Expr, ExprKind, HirId, PatKind, Stmt, StmtKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::symbol::sym; declare_clippy_lint! { /// ### What it does @@ -248,7 +247,7 @@ impl<'tcx> VectorInitializationVisitor<'_, 'tcx> { if self.initialization_found && let ExprKind::MethodCall(path, self_arg, [extend_arg], _) = expr.kind && path_to_local_id(self_arg, self.vec_alloc.local_id) - && path.ident.name.as_str() == "extend" + && path.ident.name == sym::extend && self.is_repeat_take(extend_arg) { self.slow_expression = Some(InitializationType::Extend(expr)); @@ -260,7 +259,7 @@ impl<'tcx> VectorInitializationVisitor<'_, 'tcx> { if self.initialization_found && let ExprKind::MethodCall(path, self_arg, [len_arg, fill_arg], _) = expr.kind && path_to_local_id(self_arg, self.vec_alloc.local_id) - && path.ident.name.as_str() == "resize" + && path.ident.name == sym::resize // Check that is filled with 0 && is_integer_literal(fill_arg, 0) { @@ -282,7 +281,7 @@ impl<'tcx> VectorInitializationVisitor<'_, 'tcx> { /// Returns `true` if give expression is `repeat(0).take(...)` fn is_repeat_take(&mut self, expr: &'tcx Expr<'tcx>) -> bool { if let ExprKind::MethodCall(take_path, recv, [len_arg], _) = expr.kind - && take_path.ident.name.as_str() == "take" + && take_path.ident.name == sym::take // Check that take is applied to `repeat(0)` && self.is_repeat_zero(recv) { diff --git a/clippy_lints/src/strings.rs b/clippy_lints/src/strings.rs index 43a3e69610513..af4d0d541f176 100644 --- a/clippy_lints/src/strings.rs +++ b/clippy_lints/src/strings.rs @@ -286,7 +286,7 @@ impl<'tcx> LateLintPass<'tcx> for StringLitAsBytes { if !e.span.in_external_macro(cx.sess().source_map()) && let ExprKind::MethodCall(path, receiver, ..) = &e.kind - && path.ident.name.as_str() == "as_bytes" + && path.ident.name == sym::as_bytes && let ExprKind::Lit(lit) = &receiver.kind && let LitKind::Str(lit_content, _) = &lit.node { @@ -332,7 +332,7 @@ impl<'tcx> LateLintPass<'tcx> for StringLitAsBytes { } if let ExprKind::MethodCall(path, recv, [], _) = &e.kind - && path.ident.name.as_str() == "into_bytes" + && path.ident.name == sym::into_bytes && let ExprKind::MethodCall(path, recv, [], _) = &recv.kind && matches!(path.ident.name.as_str(), "to_owned" | "to_string") && let ExprKind::Lit(lit) = &recv.kind @@ -556,7 +556,7 @@ impl<'tcx> LateLintPass<'tcx> for TrimSplitWhitespace { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &Expr<'_>) { let tyckres = cx.typeck_results(); if let ExprKind::MethodCall(path, split_recv, [], split_ws_span) = expr.kind - && path.ident.name.as_str() == "split_whitespace" + && path.ident.name == sym::split_whitespace && let Some(split_ws_def_id) = tyckres.type_dependent_def_id(expr.hir_id) && cx.tcx.is_diagnostic_item(sym::str_split_whitespace, split_ws_def_id) && let ExprKind::MethodCall(path, _trim_recv, [], trim_span) = split_recv.kind diff --git a/clippy_lints/src/to_digit_is_some.rs b/clippy_lints/src/to_digit_is_some.rs index 9993e6ae18b9d..bb969bc802fe5 100644 --- a/clippy_lints/src/to_digit_is_some.rs +++ b/clippy_lints/src/to_digit_is_some.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_sugg; -use clippy_utils::match_def_path; use clippy_utils::source::snippet_with_applicability; +use clippy_utils::{match_def_path, sym}; use rustc_errors::Applicability; use rustc_hir as hir; use rustc_lint::{LateContext, LateLintPass}; @@ -38,11 +38,11 @@ declare_lint_pass!(ToDigitIsSome => [TO_DIGIT_IS_SOME]); impl<'tcx> LateLintPass<'tcx> for ToDigitIsSome { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'_>) { if let hir::ExprKind::MethodCall(is_some_path, to_digit_expr, [], _) = &expr.kind - && is_some_path.ident.name.as_str() == "is_some" + && is_some_path.ident.name == sym::is_some { let match_result = match &to_digit_expr.kind { hir::ExprKind::MethodCall(to_digits_path, char_arg, [radix_arg], _) => { - if to_digits_path.ident.name.as_str() == "to_digit" + if to_digits_path.ident.name == sym::to_digit && let char_arg_ty = cx.typeck_results().expr_ty_adjusted(char_arg) && *char_arg_ty.kind() == ty::Char { diff --git a/clippy_lints/src/transmute/eager_transmute.rs b/clippy_lints/src/transmute/eager_transmute.rs index 81c0a57083e80..1ccab62708b18 100644 --- a/clippy_lints/src/transmute/eager_transmute.rs +++ b/clippy_lints/src/transmute/eager_transmute.rs @@ -1,6 +1,6 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::ty::is_normalizable; -use clippy_utils::{eq_expr_value, path_to_local}; +use clippy_utils::{eq_expr_value, path_to_local, sym}; use rustc_abi::WrappingRange; use rustc_errors::Applicability; use rustc_hir::{Expr, ExprKind, Node}; @@ -43,7 +43,7 @@ fn binops_with_local(cx: &LateContext<'_>, local_expr: &Expr<'_>, expr: &Expr<'_ binops_with_local(cx, local_expr, lhs) || binops_with_local(cx, local_expr, rhs) }, ExprKind::MethodCall(path, receiver, [arg], _) - if path.ident.name.as_str() == "contains" + if path.ident.name == sym::contains // ... `contains` called on some kind of range && let Some(receiver_adt) = cx.typeck_results().expr_ty(receiver).peel_refs().ty_adt_def() && let lang_items = cx.tcx.lang_items() @@ -81,7 +81,7 @@ pub(super) fn check<'tcx>( if let Some(then_some_call) = peel_parent_unsafe_blocks(cx, expr) && let ExprKind::MethodCall(path, receiver, [arg], _) = then_some_call.kind && cx.typeck_results().expr_ty(receiver).is_bool() - && path.ident.name.as_str() == "then_some" + && path.ident.name == sym::then_some && is_local_with_projections(transmutable) && binops_with_local(cx, transmutable, receiver) && is_normalizable(cx, cx.param_env, from_ty) diff --git a/clippy_lints/src/uninit_vec.rs b/clippy_lints/src/uninit_vec.rs index 7803d5115c971..cee4a53f03cbe 100644 --- a/clippy_lints/src/uninit_vec.rs +++ b/clippy_lints/src/uninit_vec.rs @@ -1,12 +1,12 @@ use clippy_utils::diagnostics::{span_lint, span_lint_and_then}; use clippy_utils::higher::{VecInitKind, get_vec_init_kind}; use clippy_utils::ty::{is_type_diagnostic_item, is_uninit_value_valid_for_ty}; -use clippy_utils::{SpanlessEq, is_integer_literal, is_lint_allowed, path_to_local_id, peel_hir_expr_while}; +use clippy_utils::{SpanlessEq, is_integer_literal, is_lint_allowed, path_to_local_id, peel_hir_expr_while, sym}; use rustc_hir::{Block, Expr, ExprKind, HirId, PatKind, PathSegment, Stmt, StmtKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_middle::ty; use rustc_session::declare_lint_pass; -use rustc_span::{Span, sym}; +use rustc_span::Span; // TODO: add `ReadBuf` (RFC 2930) in "How to fix" once it is available in std declare_clippy_lint! { @@ -187,7 +187,7 @@ fn extract_init_or_reserve_target<'tcx>(cx: &LateContext<'tcx>, stmt: &'tcx Stmt fn is_reserve(cx: &LateContext<'_>, path: &PathSegment<'_>, self_expr: &Expr<'_>) -> bool { is_type_diagnostic_item(cx, cx.typeck_results().expr_ty(self_expr).peel_refs(), sym::Vec) - && path.ident.name.as_str() == "reserve" + && path.ident.name == sym::reserve } /// Returns self if the expression is `Vec::set_len()` @@ -209,7 +209,7 @@ fn extract_set_len_self<'tcx>(cx: &LateContext<'_>, expr: &'tcx Expr<'_>) -> Opt ExprKind::MethodCall(path, self_expr, [arg], _) => { let self_type = cx.typeck_results().expr_ty(self_expr).peel_refs(); if is_type_diagnostic_item(cx, self_type, sym::Vec) - && path.ident.name.as_str() == "set_len" + && path.ident.name == sym::set_len && !is_integer_literal(arg, 0) { Some((self_expr, expr.span)) diff --git a/clippy_lints/src/unused_self.rs b/clippy_lints/src/unused_self.rs index d0067b1a65e71..12da891a71b11 100644 --- a/clippy_lints/src/unused_self.rs +++ b/clippy_lints/src/unused_self.rs @@ -1,6 +1,7 @@ use clippy_config::Conf; use clippy_utils::diagnostics::span_lint_and_help; use clippy_utils::macros::root_macro_call_first_node; +use clippy_utils::sym; use clippy_utils::visitors::is_local_used; use rustc_hir::{Body, Impl, ImplItem, ImplItemKind, ItemKind}; use rustc_lint::{LateContext, LateLintPass}; @@ -61,12 +62,10 @@ impl<'tcx> LateLintPass<'tcx> for UnusedSelf { let assoc_item = cx.tcx.associated_item(impl_item.owner_id); let contains_todo = |cx, body: &'_ Body<'_>| -> bool { clippy_utils::visitors::for_each_expr_without_closures(body.value, |e| { - if let Some(macro_call) = root_macro_call_first_node(cx, e) { - if cx.tcx.item_name(macro_call.def_id).as_str() == "todo" { - ControlFlow::Break(()) - } else { - ControlFlow::Continue(()) - } + if let Some(macro_call) = root_macro_call_first_node(cx, e) + && cx.tcx.is_diagnostic_item(sym::todo_macro, macro_call.def_id) + { + ControlFlow::Break(()) } else { ControlFlow::Continue(()) } diff --git a/clippy_lints/src/unwrap.rs b/clippy_lints/src/unwrap.rs index ce82b56eb946f..ba140788bb54e 100644 --- a/clippy_lints/src/unwrap.rs +++ b/clippy_lints/src/unwrap.rs @@ -208,7 +208,7 @@ fn is_option_as_mut_use(tcx: TyCtxt<'_>, expr_id: HirId) -> bool { if let Node::Expr(mutating_expr) = tcx.parent_hir_node(expr_id) && let ExprKind::MethodCall(path, _, [], _) = mutating_expr.kind { - path.ident.name.as_str() == "as_mut" + path.ident.name == sym::as_mut } else { false } @@ -278,7 +278,7 @@ fn consume_option_as_ref<'tcx>(expr: &'tcx Expr<'tcx>) -> (&'tcx Expr<'tcx>, Opt if let ExprKind::MethodCall(path, recv, [], _) = expr.kind { if path.ident.name == sym::as_ref { (recv, Some(AsRefKind::AsRef)) - } else if path.ident.name.as_str() == "as_mut" { + } else if path.ident.name == sym::as_mut { (recv, Some(AsRefKind::AsMut)) } else { (expr, None) diff --git a/clippy_lints/src/write.rs b/clippy_lints/src/write.rs index 11c14c1477764..f24c127c4521d 100644 --- a/clippy_lints/src/write.rs +++ b/clippy_lints/src/write.rs @@ -1,8 +1,8 @@ use clippy_config::Conf; use clippy_utils::diagnostics::{span_lint, span_lint_and_then}; -use clippy_utils::is_in_test; use clippy_utils::macros::{FormatArgsStorage, MacroCall, format_arg_removal_span, root_macro_call_first_node}; use clippy_utils::source::{SpanRangeExt, expand_past_previous_comma}; +use clippy_utils::{is_in_test, sym}; use rustc_ast::token::LitKind; use rustc_ast::{ FormatArgPosition, FormatArgPositionKind, FormatArgs, FormatArgsPiece, FormatOptions, FormatPlaceholder, @@ -12,7 +12,7 @@ use rustc_errors::Applicability; use rustc_hir::{Expr, Impl, Item, ItemKind}; use rustc_lint::{LateContext, LateLintPass, LintContext}; use rustc_session::impl_lint_pass; -use rustc_span::{BytePos, Span, sym}; +use rustc_span::{BytePos, Span}; declare_clippy_lint! { /// ### What it does @@ -359,7 +359,7 @@ fn is_debug_impl(cx: &LateContext<'_>, item: &Item<'_>) -> bool { } fn check_newline(cx: &LateContext<'_>, format_args: &FormatArgs, macro_call: &MacroCall, name: &str) { - let Some(FormatArgsPiece::Literal(last)) = format_args.template.last() else { + let Some(&FormatArgsPiece::Literal(last)) = format_args.template.last() else { return; }; @@ -401,7 +401,7 @@ fn check_newline(cx: &LateContext<'_>, format_args: &FormatArgs, macro_call: &Ma return; }; - if format_args.template.len() == 1 && last.as_str() == "\n" { + if format_args.template.len() == 1 && last == sym::LF { // print!("\n"), write!(f, "\n") diag.multipart_suggestion( @@ -427,9 +427,7 @@ fn check_newline(cx: &LateContext<'_>, format_args: &FormatArgs, macro_call: &Ma } fn check_empty_string(cx: &LateContext<'_>, format_args: &FormatArgs, macro_call: &MacroCall, name: &str) { - if let [FormatArgsPiece::Literal(literal)] = &format_args.template[..] - && literal.as_str() == "\n" - { + if let [FormatArgsPiece::Literal(sym::LF)] = &format_args.template[..] { let mut span = format_args.span; let lint = if name == "writeln" { diff --git a/clippy_lints_internal/src/lib.rs b/clippy_lints_internal/src/lib.rs index 1c42f4112f9a1..b02d378619cab 100644 --- a/clippy_lints_internal/src/lib.rs +++ b/clippy_lints_internal/src/lib.rs @@ -2,6 +2,7 @@ #![allow( clippy::missing_docs_in_private_items, clippy::must_use_candidate, + clippy::symbol_as_str, rustc::diagnostic_outside_of_impl, rustc::untranslatable_diagnostic )] @@ -31,12 +32,12 @@ extern crate rustc_span; mod almost_standard_lint_formulation; mod collapsible_calls; -mod interning_literals; mod invalid_paths; mod lint_without_lint_pass; mod msrv_attr_impl; mod outer_expn_data_pass; mod produce_ice; +mod symbols; mod unnecessary_def_path; mod unsorted_clippy_utils_paths; @@ -45,7 +46,6 @@ use rustc_lint::{Lint, LintStore}; static LINTS: &[&Lint] = &[ almost_standard_lint_formulation::ALMOST_STANDARD_LINT_FORMULATION, collapsible_calls::COLLAPSIBLE_SPAN_LINT_CALLS, - interning_literals::INTERNING_LITERALS, invalid_paths::INVALID_PATHS, lint_without_lint_pass::DEFAULT_LINT, lint_without_lint_pass::INVALID_CLIPPY_VERSION_ATTRIBUTE, @@ -54,6 +54,8 @@ static LINTS: &[&Lint] = &[ msrv_attr_impl::MISSING_MSRV_ATTR_IMPL, outer_expn_data_pass::OUTER_EXPN_EXPN_DATA, produce_ice::PRODUCE_ICE, + symbols::INTERNING_LITERALS, + symbols::SYMBOL_AS_STR, unnecessary_def_path::UNNECESSARY_DEF_PATH, unsorted_clippy_utils_paths::UNSORTED_CLIPPY_UTILS_PATHS, ]; @@ -65,7 +67,7 @@ pub fn register_lints(store: &mut LintStore) { store.register_early_pass(|| Box::new(produce_ice::ProduceIce)); store.register_late_pass(|_| Box::new(collapsible_calls::CollapsibleCalls)); store.register_late_pass(|_| Box::new(invalid_paths::InvalidPaths)); - store.register_late_pass(|_| Box::::default()); + store.register_late_pass(|_| Box::::default()); store.register_late_pass(|_| Box::::default()); store.register_late_pass(|_| Box::::default()); store.register_late_pass(|_| Box::new(outer_expn_data_pass::OuterExpnDataPass)); diff --git a/clippy_lints_internal/src/interning_literals.rs b/clippy_lints_internal/src/symbols.rs similarity index 52% rename from clippy_lints_internal/src/interning_literals.rs rename to clippy_lints_internal/src/symbols.rs index 6cee37442349c..c64e5821916bf 100644 --- a/clippy_lints_internal/src/interning_literals.rs +++ b/clippy_lints_internal/src/symbols.rs @@ -1,7 +1,7 @@ -use clippy_utils::consts::{ConstEvalCtxt, Constant}; use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::ty::match_type; -use clippy_utils::{def_path_def_ids, paths}; +use clippy_utils::{def_path_def_ids, match_def_path, paths}; +use rustc_ast::LitKind; use rustc_data_structures::fx::FxHashMap; use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; @@ -11,8 +11,8 @@ use rustc_lint_defs::declare_tool_lint; use rustc_middle::mir::ConstValue; use rustc_middle::ty; use rustc_session::impl_lint_pass; -use rustc_span::sym; use rustc_span::symbol::Symbol; +use rustc_span::{Span, sym}; declare_tool_lint! { /// ### What it does @@ -36,15 +36,37 @@ declare_tool_lint! { report_in_external_macro: true } +declare_tool_lint! { + /// ### What it does + /// Checks for calls to `Symbol::as_str` + /// + /// ### Why is this bad? + /// It's faster and easier to use the symbol constant. If one doesn't exist it can be added to `clippy_utils/src/sym.rs` + /// + /// ### Example + /// ```rust,ignore + /// symbol.as_str() == "foo" + /// ``` + /// + /// Use instead: + /// ```rust,ignore + /// symbol == sym::foo + /// ``` + pub clippy::SYMBOL_AS_STR, + Warn, + "calls to `Symbol::as_str`", + report_in_external_macro: true +} + #[derive(Default)] -pub struct InterningDefinedSymbol { +pub struct Symbols { // Maps the symbol to the import path symbol_map: FxHashMap, } -impl_lint_pass!(InterningDefinedSymbol => [INTERNING_LITERALS]); +impl_lint_pass!(Symbols => [INTERNING_LITERALS, SYMBOL_AS_STR]); -impl<'tcx> LateLintPass<'tcx> for InterningDefinedSymbol { +impl<'tcx> LateLintPass<'tcx> for Symbols { fn check_crate(&mut self, cx: &LateContext<'_>) { let modules = [ ("kw", &paths::KW_MODULE[..]), @@ -77,7 +99,8 @@ impl<'tcx> LateLintPass<'tcx> for InterningDefinedSymbol { if let ExprKind::Call(func, [arg]) = &expr.kind && let ty::FnDef(def_id, _) = cx.typeck_results().expr_ty(func).kind() && cx.tcx.is_diagnostic_item(sym::SymbolIntern, *def_id) - && let Some(Constant::Str(arg)) = ConstEvalCtxt::new(cx).eval_simple(arg) + && let ExprKind::Lit(lit) = arg.kind + && let LitKind::Str(name, _) = lit.node { span_lint_and_then( cx, @@ -85,18 +108,62 @@ impl<'tcx> LateLintPass<'tcx> for InterningDefinedSymbol { expr.span, "interning a string literal", |diag| { - let value = Symbol::intern(&arg).as_u32(); - let (message, path) = if let Some((prefix, name)) = self.symbol_map.get(&value) { - ("use the preinterned symbol", format!("{prefix}::{name}")) - } else { - ( - "add the symbol to `clippy_utils/src/sym.rs` and use it", - format!("sym::{}", arg.replace(|ch: char| !ch.is_alphanumeric(), "_")), - ) - }; + let (message, path) = suggestion(&mut self.symbol_map, name); diag.span_suggestion_verbose(expr.span, message, path, Applicability::MaybeIncorrect); }, ); } + + if let ExprKind::Binary(_, lhs, rhs) = expr.kind { + check_binary(cx, lhs, rhs, &mut self.symbol_map); + check_binary(cx, rhs, lhs, &mut self.symbol_map); + } + } +} + +fn check_binary( + cx: &LateContext<'_>, + lhs: &Expr<'_>, + rhs: &Expr<'_>, + symbols: &mut FxHashMap, +) { + if let Some(removal_span) = as_str_span(cx, lhs) + && let ExprKind::Lit(lit) = rhs.kind + && let LitKind::Str(name, _) = lit.node + { + span_lint_and_then(cx, SYMBOL_AS_STR, lhs.span, "converting a Symbol to a string", |diag| { + let (message, path) = suggestion(symbols, name); + diag.multipart_suggestion_verbose( + message, + vec![(removal_span, String::new()), (rhs.span, path)], + Applicability::MachineApplicable, + ); + }); + } +} + +fn suggestion(symbols: &mut FxHashMap, name: Symbol) -> (&'static str, String) { + if let Some((prefix, name)) = symbols.get(&name.as_u32()) { + ("use the preinterned symbol", format!("{prefix}::{name}")) + } else { + ( + "add the symbol to `clippy_utils/src/sym.rs` and use it", + format!("sym::{}", name.as_str().replace(|ch: char| !ch.is_alphanumeric(), "_")), + ) + } +} + +/// ```ignore +/// symbol.as_str() +/// // ^^^^^^^^ +/// ``` +fn as_str_span(cx: &LateContext<'_>, expr: &Expr<'_>) -> Option { + if let ExprKind::MethodCall(_, recv, [], _) = expr.kind + && let Some(method_def_id) = cx.typeck_results().type_dependent_def_id(expr.hir_id) + && match_def_path(cx, method_def_id, &paths::SYMBOL_AS_STR) + { + Some(recv.span.shrink_to_hi().to(expr.span.shrink_to_hi())) + } else { + None } } diff --git a/clippy_utils/src/higher.rs b/clippy_utils/src/higher.rs index d4e66ebd8e1fb..dbb993482902f 100644 --- a/clippy_utils/src/higher.rs +++ b/clippy_utils/src/higher.rs @@ -3,14 +3,14 @@ #![deny(clippy::missing_docs_in_private_items)] use crate::consts::{ConstEvalCtxt, Constant}; -use crate::is_expn_of; use crate::ty::is_type_diagnostic_item; +use crate::{is_expn_of, sym}; use rustc_ast::ast; use rustc_hir as hir; use rustc_hir::{Arm, Block, Expr, ExprKind, HirId, LoopSource, MatchSource, Node, Pat, QPath, StructTailExpr}; use rustc_lint::LateContext; -use rustc_span::{Span, sym, symbol}; +use rustc_span::{Span, symbol}; /// The essential nodes of a desugared for loop as well as the entire span: /// `for pat in arg { body }` becomes `(pat, arg, body)`. Returns `(pat, arg, body, span)`. @@ -474,7 +474,7 @@ pub fn get_vec_init_kind<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) - return Some(VecInitKind::New); } else if name.ident.name == symbol::kw::Default { return Some(VecInitKind::Default); - } else if name.ident.name.as_str() == "with_capacity" { + } else if name.ident.name == sym::with_capacity { let arg = args.first()?; return match ConstEvalCtxt::new(cx).eval_simple(arg) { Some(Constant::Int(num)) => Some(VecInitKind::WithConstCapacity(num)), diff --git a/clippy_utils/src/lib.rs b/clippy_utils/src/lib.rs index 264b9b0406d0b..d20e1ae6c0b55 100644 --- a/clippy_utils/src/lib.rs +++ b/clippy_utils/src/lib.rs @@ -1412,7 +1412,7 @@ pub fn is_in_panic_handler(cx: &LateContext<'_>, e: &Expr<'_>) -> bool { } /// Gets the name of the item the expression is in, if available. -pub fn get_item_name(cx: &LateContext<'_>, expr: &Expr<'_>) -> Option { +pub fn parent_item_name(cx: &LateContext<'_>, expr: &Expr<'_>) -> Option { let parent_id = cx.tcx.hir_get_parent_item(expr.hir_id).def_id; match cx.tcx.hir_node_by_def_id(parent_id) { Node::Item(item) => item.kind.ident().map(|ident| ident.name), @@ -2088,7 +2088,7 @@ pub fn match_libc_symbol(cx: &LateContext<'_>, did: DefId, name: &str) -> bool { let path = cx.get_def_path(did); // libc is meant to be used as a flat list of names, but they're all actually defined in different // modules based on the target platform. Ignore everything but crate name and the item name. - path.first().is_some_and(|s| s.as_str() == "libc") && path.last().is_some_and(|s| s.as_str() == name) + path.first().is_some_and(|s| *s == sym::libc) && path.last().is_some_and(|s| s.as_str() == name) } /// Returns the list of condition expressions and the list of blocks in a diff --git a/clippy_utils/src/sym.rs b/clippy_utils/src/sym.rs index 1a30b473d1063..38f077134c033 100644 --- a/clippy_utils/src/sym.rs +++ b/clippy_utils/src/sym.rs @@ -30,33 +30,75 @@ macro_rules! generate { } generate! { + abs, as_bytes, as_deref_mut, as_deref, as_mut, Binary, + build_hasher, + cargo_clippy: "cargo-clippy", Cargo_toml: "Cargo.toml", + cast, + chars, CLIPPY_ARGS, CLIPPY_CONF_DIR, + clone_into, cloned, + collect, contains, copied, + CRLF: "\r\n", Current, + ends_with, + exp, + extend, + finish_non_exhaustive, + finish, + flat_map, + for_each, + from_raw, + from_str_radix, get, insert, int_roundings, + into_bytes, + into_owned, IntoIter, + is_ascii, is_empty, + is_err, + is_none, is_ok, is_some, + last, + LF: "\n", LowerExp, LowerHex, + max, + min, + mode, msrv, Octal, or_default, + parse, + push, regex, + reserve, + resize, + restriction, rustfmt_skip, + set_len, + set_mode, + set_readonly, + signum, + split_whitespace, + split, Start, + take, + TBD, + then_some, + to_digit, to_owned, unused_extern_crates, unwrap_err, @@ -66,4 +108,6 @@ generate! { V4, V6, Weak, + with_capacity, + wrapping_offset, } diff --git a/tests/ui-internal/symbol_as_str.fixed b/tests/ui-internal/symbol_as_str.fixed new file mode 100644 index 0000000000000..3e26732836ca8 --- /dev/null +++ b/tests/ui-internal/symbol_as_str.fixed @@ -0,0 +1,21 @@ +#![feature(rustc_private)] + +extern crate rustc_span; + +use clippy_utils::sym; +use rustc_span::{Symbol, kw}; + +fn f(s: Symbol) { + s == sym::f32; + //~^ symbol_as_str + s == sym::proc_dash_macro; + //~^ symbol_as_str + s == kw::SelfLower; + //~^ symbol_as_str + s == sym::msrv; + //~^ symbol_as_str + s == sym::Cargo_toml; + //~^ symbol_as_str + sym::get == s; + //~^ symbol_as_str +} diff --git a/tests/ui-internal/symbol_as_str.rs b/tests/ui-internal/symbol_as_str.rs new file mode 100644 index 0000000000000..334c32d189837 --- /dev/null +++ b/tests/ui-internal/symbol_as_str.rs @@ -0,0 +1,21 @@ +#![feature(rustc_private)] + +extern crate rustc_span; + +use clippy_utils::sym; +use rustc_span::{Symbol, kw}; + +fn f(s: Symbol) { + s.as_str() == "f32"; + //~^ symbol_as_str + s.as_str() == "proc-macro"; + //~^ symbol_as_str + s.as_str() == "self"; + //~^ symbol_as_str + s.as_str() == "msrv"; + //~^ symbol_as_str + s.as_str() == "Cargo.toml"; + //~^ symbol_as_str + "get" == s.as_str(); + //~^ symbol_as_str +} diff --git a/tests/ui-internal/symbol_as_str.stderr b/tests/ui-internal/symbol_as_str.stderr new file mode 100644 index 0000000000000..39f81f3833c49 --- /dev/null +++ b/tests/ui-internal/symbol_as_str.stderr @@ -0,0 +1,76 @@ +error: converting a Symbol to a string + --> tests/ui-internal/symbol_as_str.rs:9:5 + | +LL | s.as_str() == "f32"; + | ^^^^^^^^^^ + | + = note: `-D clippy::symbol-as-str` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::symbol_as_str)]` +help: use the preinterned symbol + | +LL - s.as_str() == "f32"; +LL + s == sym::f32; + | + +error: converting a Symbol to a string + --> tests/ui-internal/symbol_as_str.rs:11:5 + | +LL | s.as_str() == "proc-macro"; + | ^^^^^^^^^^ + | +help: use the preinterned symbol + | +LL - s.as_str() == "proc-macro"; +LL + s == sym::proc_dash_macro; + | + +error: converting a Symbol to a string + --> tests/ui-internal/symbol_as_str.rs:13:5 + | +LL | s.as_str() == "self"; + | ^^^^^^^^^^ + | +help: use the preinterned symbol + | +LL - s.as_str() == "self"; +LL + s == kw::SelfLower; + | + +error: converting a Symbol to a string + --> tests/ui-internal/symbol_as_str.rs:15:5 + | +LL | s.as_str() == "msrv"; + | ^^^^^^^^^^ + | +help: use the preinterned symbol + | +LL - s.as_str() == "msrv"; +LL + s == sym::msrv; + | + +error: converting a Symbol to a string + --> tests/ui-internal/symbol_as_str.rs:17:5 + | +LL | s.as_str() == "Cargo.toml"; + | ^^^^^^^^^^ + | +help: use the preinterned symbol + | +LL - s.as_str() == "Cargo.toml"; +LL + s == sym::Cargo_toml; + | + +error: converting a Symbol to a string + --> tests/ui-internal/symbol_as_str.rs:19:14 + | +LL | "get" == s.as_str(); + | ^^^^^^^^^^ + | +help: use the preinterned symbol + | +LL - "get" == s.as_str(); +LL + sym::get == s; + | + +error: aborting due to 6 previous errors + diff --git a/tests/ui-internal/symbol_as_str_unfixable.rs b/tests/ui-internal/symbol_as_str_unfixable.rs new file mode 100644 index 0000000000000..635f28007e9af --- /dev/null +++ b/tests/ui-internal/symbol_as_str_unfixable.rs @@ -0,0 +1,15 @@ +//@no-rustfix: paths that don't exist yet +#![feature(rustc_private)] + +extern crate rustc_span; + +use rustc_span::Symbol; + +fn f(s: Symbol) { + s.as_str() == "xyz123"; + //~^ symbol_as_str + s.as_str() == "with-dash"; + //~^ symbol_as_str + s.as_str() == "with.dot"; + //~^ symbol_as_str +} diff --git a/tests/ui-internal/symbol_as_str_unfixable.stderr b/tests/ui-internal/symbol_as_str_unfixable.stderr new file mode 100644 index 0000000000000..5349983ca5196 --- /dev/null +++ b/tests/ui-internal/symbol_as_str_unfixable.stderr @@ -0,0 +1,40 @@ +error: converting a Symbol to a string + --> tests/ui-internal/symbol_as_str_unfixable.rs:9:5 + | +LL | s.as_str() == "xyz123"; + | ^^^^^^^^^^ + | + = note: `-D clippy::symbol-as-str` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::symbol_as_str)]` +help: add the symbol to `clippy_utils/src/sym.rs` and use it + | +LL - s.as_str() == "xyz123"; +LL + s == sym::xyz123; + | + +error: converting a Symbol to a string + --> tests/ui-internal/symbol_as_str_unfixable.rs:11:5 + | +LL | s.as_str() == "with-dash"; + | ^^^^^^^^^^ + | +help: add the symbol to `clippy_utils/src/sym.rs` and use it + | +LL - s.as_str() == "with-dash"; +LL + s == sym::with_dash; + | + +error: converting a Symbol to a string + --> tests/ui-internal/symbol_as_str_unfixable.rs:13:5 + | +LL | s.as_str() == "with.dot"; + | ^^^^^^^^^^ + | +help: add the symbol to `clippy_utils/src/sym.rs` and use it + | +LL - s.as_str() == "with.dot"; +LL + s == sym::with_dot; + | + +error: aborting due to 3 previous errors + From 2b8e9b508c6eb60e1ee37509f9dead90bd56449a Mon Sep 17 00:00:00 2001 From: xizheyin Date: Fri, 25 Apr 2025 15:17:19 +0800 Subject: [PATCH 34/90] Enable [behind-upstream] triagebot option Signed-off-by: xizheyin --- src/doc/rustc-dev-guide/triagebot.toml | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/doc/rustc-dev-guide/triagebot.toml b/src/doc/rustc-dev-guide/triagebot.toml index 12aa0b7b8ff15..61093ecaaadf7 100644 --- a/src/doc/rustc-dev-guide/triagebot.toml +++ b/src/doc/rustc-dev-guide/triagebot.toml @@ -9,3 +9,6 @@ allow-unauthenticated = [ # Automatically close and reopen PRs made by bots to run CI on them [bot-pull-requests] + +[behind-upstream] +days-threshold = 7 \ No newline at end of file From 148c9a198170f79de992ba6d56a859c99c64685c Mon Sep 17 00:00:00 2001 From: yuk1ty Date: Sun, 20 Apr 2025 10:51:19 +0900 Subject: [PATCH 35/90] Fix error message for static references or mutable references --- tests/ui/checked_unwrap/simple_conditionals.stderr | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/ui/checked_unwrap/simple_conditionals.stderr b/tests/ui/checked_unwrap/simple_conditionals.stderr index bdac1e42309d8..ad3c420270c14 100644 --- a/tests/ui/checked_unwrap/simple_conditionals.stderr +++ b/tests/ui/checked_unwrap/simple_conditionals.stderr @@ -236,7 +236,7 @@ LL | if result.is_ok() { LL | result.as_mut().unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^ -error: creating a shared reference to mutable static is discouraged +error: creating a shared reference to mutable static --> tests/ui/checked_unwrap/simple_conditionals.rs:183:12 | LL | if X.is_some() { From 3f72ffa80e93e22e3834eed50e3c7158e12281e3 Mon Sep 17 00:00:00 2001 From: yanglsh Date: Thu, 17 Apr 2025 20:30:34 +0800 Subject: [PATCH 36/90] fix: `unnecessary_cast` suggests extra brackets when in macro --- clippy_lints/src/casts/unnecessary_cast.rs | 55 +++++++++++++++++----- tests/ui/unnecessary_cast.fixed | 16 ++++++- tests/ui/unnecessary_cast.rs | 14 ++++++ tests/ui/unnecessary_cast.stderr | 22 ++++++++- 4 files changed, 91 insertions(+), 16 deletions(-) diff --git a/clippy_lints/src/casts/unnecessary_cast.rs b/clippy_lints/src/casts/unnecessary_cast.rs index ae994e94a32b5..8e8c55cf38329 100644 --- a/clippy_lints/src/casts/unnecessary_cast.rs +++ b/clippy_lints/src/casts/unnecessary_cast.rs @@ -8,7 +8,9 @@ use rustc_errors::Applicability; use rustc_hir::def::{DefKind, Res}; use rustc_hir::{Expr, ExprKind, Lit, Node, Path, QPath, TyKind, UnOp}; use rustc_lint::{LateContext, LintContext}; +use rustc_middle::ty::adjustment::Adjust; use rustc_middle::ty::{self, FloatTy, InferTy, Ty}; +use rustc_span::{Symbol, sym}; use std::ops::ControlFlow; use super::UNNECESSARY_CAST; @@ -142,6 +144,33 @@ pub(super) fn check<'tcx>( } if cast_from.kind() == cast_to.kind() && !expr.span.in_external_macro(cx.sess().source_map()) { + enum MaybeParenOrBlock { + Paren, + Block, + Nothing, + } + + fn is_borrow_expr(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { + matches!(expr.kind, ExprKind::AddrOf(..)) + || cx + .typeck_results() + .expr_adjustments(expr) + .first() + .is_some_and(|adj| matches!(adj.kind, Adjust::Borrow(_))) + } + + fn is_in_allowed_macro(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { + const ALLOWED_MACROS: &[Symbol] = &[ + sym::format_args_macro, + sym::assert_eq_macro, + sym::debug_assert_eq_macro, + sym::assert_ne_macro, + sym::debug_assert_ne_macro, + ]; + matches!(expr.span.ctxt().outer_expn_data().macro_def_id, Some(def_id) if + cx.tcx.get_diagnostic_name(def_id).is_some_and(|sym| ALLOWED_MACROS.contains(&sym))) + } + if let Some(id) = path_to_local(cast_expr) && !cx.tcx.hir_span(id).eq_ctxt(cast_expr.span) { @@ -150,15 +179,15 @@ pub(super) fn check<'tcx>( return false; } - // If the whole cast expression is a unary expression (`(*x as T)`) or an addressof - // expression (`(&x as T)`), then not surrounding the suggestion into a block risks us - // changing the precedence of operators if the cast expression is followed by an operation - // with higher precedence than the unary operator (`(*x as T).foo()` would become - // `*x.foo()`, which changes what the `*` applies on). - // The same is true if the expression encompassing the cast expression is a unary - // expression or an addressof expression. - let needs_block = matches!(cast_expr.kind, ExprKind::Unary(..) | ExprKind::AddrOf(..)) - || get_parent_expr(cx, expr).is_some_and(|e| matches!(e.kind, ExprKind::Unary(..) | ExprKind::AddrOf(..))); + // Changing `&(x as i32)` to `&x` would change the meaning of the code because the previous creates + // a reference to the temporary while the latter creates a reference to the original value. + let surrounding = match cx.tcx.parent_hir_node(expr.hir_id) { + Node::Expr(parent) if is_borrow_expr(cx, parent) && !is_in_allowed_macro(cx, parent) => { + MaybeParenOrBlock::Block + }, + Node::Expr(parent) if cast_expr.precedence() < parent.precedence() => MaybeParenOrBlock::Paren, + _ => MaybeParenOrBlock::Nothing, + }; span_lint_and_sugg( cx, @@ -166,10 +195,10 @@ pub(super) fn check<'tcx>( expr.span, format!("casting to the same type is unnecessary (`{cast_from}` -> `{cast_to}`)"), "try", - if needs_block { - format!("{{ {cast_str} }}") - } else { - cast_str + match surrounding { + MaybeParenOrBlock::Paren => format!("({cast_str})"), + MaybeParenOrBlock::Block => format!("{{ {cast_str} }}"), + MaybeParenOrBlock::Nothing => cast_str, }, Applicability::MachineApplicable, ); diff --git a/tests/ui/unnecessary_cast.fixed b/tests/ui/unnecessary_cast.fixed index ba167e79a308b..91ff4b9ee7713 100644 --- a/tests/ui/unnecessary_cast.fixed +++ b/tests/ui/unnecessary_cast.fixed @@ -266,7 +266,21 @@ mod fixable { // Issue #11968: The suggestion for this lint removes the parentheses and leave the code as // `*x.pow(2)` which tries to dereference the return value rather than `x`. fn issue_11968(x: &usize) -> usize { - { *x }.pow(2) + (*x).pow(2) + //~^ unnecessary_cast + } + + #[allow(clippy::cast_lossless)] + fn issue_14640() { + let x = 5usize; + let vec: Vec = vec![1, 2, 3, 4, 5]; + assert_eq!(vec.len(), x); + //~^ unnecessary_cast + + let _ = (5i32 as i64).abs(); + //~^ unnecessary_cast + + let _ = 5i32 as i64; //~^ unnecessary_cast } } diff --git a/tests/ui/unnecessary_cast.rs b/tests/ui/unnecessary_cast.rs index 0f90a8b05965a..5444a914db167 100644 --- a/tests/ui/unnecessary_cast.rs +++ b/tests/ui/unnecessary_cast.rs @@ -269,4 +269,18 @@ mod fixable { (*x as usize).pow(2) //~^ unnecessary_cast } + + #[allow(clippy::cast_lossless)] + fn issue_14640() { + let x = 5usize; + let vec: Vec = vec![1, 2, 3, 4, 5]; + assert_eq!(vec.len(), x as usize); + //~^ unnecessary_cast + + let _ = (5i32 as i64 as i64).abs(); + //~^ unnecessary_cast + + let _ = 5i32 as i64 as i64; + //~^ unnecessary_cast + } } diff --git a/tests/ui/unnecessary_cast.stderr b/tests/ui/unnecessary_cast.stderr index c83770c1a2992..3e3c5eb81c105 100644 --- a/tests/ui/unnecessary_cast.stderr +++ b/tests/ui/unnecessary_cast.stderr @@ -245,7 +245,25 @@ error: casting to the same type is unnecessary (`usize` -> `usize`) --> tests/ui/unnecessary_cast.rs:269:9 | LL | (*x as usize).pow(2) - | ^^^^^^^^^^^^^ help: try: `{ *x }` + | ^^^^^^^^^^^^^ help: try: `(*x)` -error: aborting due to 41 previous errors +error: casting to the same type is unnecessary (`usize` -> `usize`) + --> tests/ui/unnecessary_cast.rs:277:31 + | +LL | assert_eq!(vec.len(), x as usize); + | ^^^^^^^^^^ help: try: `x` + +error: casting to the same type is unnecessary (`i64` -> `i64`) + --> tests/ui/unnecessary_cast.rs:280:17 + | +LL | let _ = (5i32 as i64 as i64).abs(); + | ^^^^^^^^^^^^^^^^^^^^ help: try: `(5i32 as i64)` + +error: casting to the same type is unnecessary (`i64` -> `i64`) + --> tests/ui/unnecessary_cast.rs:283:17 + | +LL | let _ = 5i32 as i64 as i64; + | ^^^^^^^^^^^^^^^^^^ help: try: `5i32 as i64` + +error: aborting due to 44 previous errors From ad6934791280f521ca4176b5a2d7ee5609ec4b80 Mon Sep 17 00:00:00 2001 From: yanglsh Date: Sun, 30 Mar 2025 15:05:59 +0800 Subject: [PATCH 37/90] fix: `equatable_if_let` suggests wrongly when involving reference --- clippy_lints/src/equatable_if_let.rs | 34 +++++++++++++++++++++++++- tests/ui/equatable_if_let.fixed | 36 ++++++++++++++++++++++++++++ tests/ui/equatable_if_let.rs | 36 ++++++++++++++++++++++++++++ tests/ui/equatable_if_let.stderr | 20 +++++++++++++++- 4 files changed, 124 insertions(+), 2 deletions(-) diff --git a/clippy_lints/src/equatable_if_let.rs b/clippy_lints/src/equatable_if_let.rs index 3afb687040f45..72f5eaf8a4bcc 100644 --- a/clippy_lints/src/equatable_if_let.rs +++ b/clippy_lints/src/equatable_if_let.rs @@ -68,6 +68,38 @@ fn is_structural_partial_eq<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>, other: T } } +/// Check if the pattern has any type mismatch that would prevent it from being used in an equality +/// check. This can happen if the expr has a reference type and the corresponding pattern is a +/// literal. +fn contains_type_mismatch(cx: &LateContext<'_>, pat: &Pat<'_>) -> bool { + let mut result = false; + pat.walk(|p| { + if result { + return false; + } + + if p.span.in_external_macro(cx.sess().source_map()) { + return true; + } + + let adjust_pat = match p.kind { + PatKind::Or([p, ..]) => p, + _ => p, + }; + + if let Some(adjustments) = cx.typeck_results().pat_adjustments().get(adjust_pat.hir_id) + && adjustments.first().is_some_and(|first| first.source.is_ref()) + { + result = true; + return false; + } + + true + }); + + result +} + impl<'tcx> LateLintPass<'tcx> for PatternEquality { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) { if let ExprKind::Let(let_expr) = expr.kind @@ -78,7 +110,7 @@ impl<'tcx> LateLintPass<'tcx> for PatternEquality { let pat_ty = cx.typeck_results().pat_ty(let_expr.pat); let mut applicability = Applicability::MachineApplicable; - if is_structural_partial_eq(cx, exp_ty, pat_ty) { + if is_structural_partial_eq(cx, exp_ty, pat_ty) && !contains_type_mismatch(cx, let_expr.pat) { let pat_str = match let_expr.pat.kind { PatKind::Struct(..) => format!( "({})", diff --git a/tests/ui/equatable_if_let.fixed b/tests/ui/equatable_if_let.fixed index 166b1387ba265..ce8b67f9ca7b0 100644 --- a/tests/ui/equatable_if_let.fixed +++ b/tests/ui/equatable_if_let.fixed @@ -103,3 +103,39 @@ fn main() { external!({ if let 2 = $a {} }); } + +mod issue8710 { + fn str_ref(cs: &[char]) { + if matches!(cs.iter().next(), Some('i')) { + //~^ equatable_if_let + } else { + todo!(); + } + } + + fn i32_ref(cs: &[i32]) { + if matches!(cs.iter().next(), Some(1)) { + //~^ equatable_if_let + } else { + todo!(); + } + } + + fn enum_ref() { + #[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord)] + enum MyEnum { + A(i32), + B, + } + + fn get_enum() -> Option<&'static MyEnum> { + todo!() + } + + if matches!(get_enum(), Some(MyEnum::B)) { + //~^ equatable_if_let + } else { + todo!(); + } + } +} diff --git a/tests/ui/equatable_if_let.rs b/tests/ui/equatable_if_let.rs index 09c2483ae6d43..ff09533f26519 100644 --- a/tests/ui/equatable_if_let.rs +++ b/tests/ui/equatable_if_let.rs @@ -103,3 +103,39 @@ fn main() { external!({ if let 2 = $a {} }); } + +mod issue8710 { + fn str_ref(cs: &[char]) { + if let Some('i') = cs.iter().next() { + //~^ equatable_if_let + } else { + todo!(); + } + } + + fn i32_ref(cs: &[i32]) { + if let Some(1) = cs.iter().next() { + //~^ equatable_if_let + } else { + todo!(); + } + } + + fn enum_ref() { + #[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord)] + enum MyEnum { + A(i32), + B, + } + + fn get_enum() -> Option<&'static MyEnum> { + todo!() + } + + if let Some(MyEnum::B) = get_enum() { + //~^ equatable_if_let + } else { + todo!(); + } + } +} diff --git a/tests/ui/equatable_if_let.stderr b/tests/ui/equatable_if_let.stderr index 81e0e15a5c747..dd1832ad68b28 100644 --- a/tests/ui/equatable_if_let.stderr +++ b/tests/ui/equatable_if_let.stderr @@ -85,5 +85,23 @@ error: this pattern matching can be expressed using equality LL | if let inline!("abc") = "abc" { | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `"abc" == inline!("abc")` -error: aborting due to 14 previous errors +error: this pattern matching can be expressed using `matches!` + --> tests/ui/equatable_if_let.rs:109:12 + | +LL | if let Some('i') = cs.iter().next() { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `matches!(cs.iter().next(), Some('i'))` + +error: this pattern matching can be expressed using `matches!` + --> tests/ui/equatable_if_let.rs:117:12 + | +LL | if let Some(1) = cs.iter().next() { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `matches!(cs.iter().next(), Some(1))` + +error: this pattern matching can be expressed using `matches!` + --> tests/ui/equatable_if_let.rs:135:12 + | +LL | if let Some(MyEnum::B) = get_enum() { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `matches!(get_enum(), Some(MyEnum::B))` + +error: aborting due to 17 previous errors From 5d8fb778729a86a8ad2a772f77158e906e14172a Mon Sep 17 00:00:00 2001 From: yanglsh Date: Thu, 17 Apr 2025 20:53:59 +0800 Subject: [PATCH 38/90] fix: `unused_unit` suggests wrongly when unit never type fallback --- clippy_lints/src/lib.rs | 1 + clippy_lints/src/unused_unit.rs | 155 ++++++++++++++---------- tests/ui/unused_unit.edition2021.fixed | 146 ++++++++++++++++++++++ tests/ui/unused_unit.edition2021.stderr | 128 +++++++++++++++++++ tests/ui/unused_unit.edition2024.fixed | 146 ++++++++++++++++++++++ tests/ui/unused_unit.edition2024.stderr | 122 +++++++++++++++++++ tests/ui/unused_unit.fixed | 21 ++++ tests/ui/unused_unit.rs | 26 +++- tests/ui/unused_unit.stderr | 32 ++--- 9 files changed, 698 insertions(+), 79 deletions(-) create mode 100644 tests/ui/unused_unit.edition2021.fixed create mode 100644 tests/ui/unused_unit.edition2021.stderr create mode 100644 tests/ui/unused_unit.edition2024.fixed create mode 100644 tests/ui/unused_unit.edition2024.stderr diff --git a/clippy_lints/src/lib.rs b/clippy_lints/src/lib.rs index 5fa8f6f4bf3d4..bc7fc60827a0b 100644 --- a/clippy_lints/src/lib.rs +++ b/clippy_lints/src/lib.rs @@ -729,6 +729,7 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { store.register_early_pass(|| Box::new(misc_early::MiscEarlyLints)); store.register_late_pass(|_| Box::new(redundant_closure_call::RedundantClosureCall)); store.register_early_pass(|| Box::new(unused_unit::UnusedUnit)); + store.register_late_pass(|_| Box::new(unused_unit::UnusedUnit)); store.register_late_pass(|_| Box::new(returns::Return)); store.register_late_pass(move |tcx| Box::new(collapsible_if::CollapsibleIf::new(tcx, conf))); store.register_late_pass(|_| Box::new(items_after_statements::ItemsAfterStatements)); diff --git a/clippy_lints/src/unused_unit.rs b/clippy_lints/src/unused_unit.rs index d5309aade7aac..9859ddfdf7bde 100644 --- a/clippy_lints/src/unused_unit.rs +++ b/clippy_lints/src/unused_unit.rs @@ -1,11 +1,18 @@ use clippy_utils::diagnostics::span_lint_and_sugg; use clippy_utils::source::{SpanRangeExt, position_before_rarrow}; -use rustc_ast::visit::FnKind; -use rustc_ast::{ClosureBinder, ast}; +use clippy_utils::{is_never_expr, is_unit_expr}; +use rustc_ast::{Block, StmtKind}; use rustc_errors::Applicability; -use rustc_lint::{EarlyContext, EarlyLintPass}; +use rustc_hir::def_id::LocalDefId; +use rustc_hir::intravisit::FnKind; +use rustc_hir::{ + AssocItemConstraintKind, Body, Expr, ExprKind, FnDecl, FnRetTy, GenericArgsParentheses, Node, PolyTraitRef, Term, + Ty, TyKind, +}; +use rustc_lint::{EarlyContext, EarlyLintPass, LateContext, LateLintPass}; use rustc_session::declare_lint_pass; -use rustc_span::{BytePos, Span}; +use rustc_span::edition::Edition; +use rustc_span::{BytePos, Span, sym}; declare_clippy_lint! { /// ### What it does @@ -34,27 +41,89 @@ declare_clippy_lint! { declare_lint_pass!(UnusedUnit => [UNUSED_UNIT]); -impl EarlyLintPass for UnusedUnit { - fn check_fn(&mut self, cx: &EarlyContext<'_>, kind: FnKind<'_>, span: Span, _: ast::NodeId) { - if let ast::FnRetTy::Ty(ref ty) = kind.decl().output - && let ast::TyKind::Tup(ref vals) = ty.kind - && vals.is_empty() - && !ty.span.from_expansion() - && get_def(span) == get_def(ty.span) +impl<'tcx> LateLintPass<'tcx> for UnusedUnit { + fn check_fn( + &mut self, + cx: &LateContext<'tcx>, + kind: FnKind<'tcx>, + decl: &'tcx FnDecl<'tcx>, + body: &'tcx Body<'tcx>, + span: Span, + def_id: LocalDefId, + ) { + if let FnRetTy::Return(hir_ty) = decl.output + && is_unit_ty(hir_ty) + && !hir_ty.span.from_expansion() + && get_def(span) == get_def(hir_ty.span) { // implicit types in closure signatures are forbidden when `for<...>` is present - if let FnKind::Closure(&ClosureBinder::For { .. }, ..) = kind { + if let FnKind::Closure = kind + && let Node::Expr(expr) = cx.tcx.hir_node_by_def_id(def_id) + && let ExprKind::Closure(closure) = expr.kind + && !closure.bound_generic_params.is_empty() + { + return; + } + + // unit never type fallback is no longer supported since Rust 2024. For more information, + // see + if cx.tcx.sess.edition() >= Edition::Edition2024 + && let ExprKind::Block(block, _) = body.value.kind + && let Some(expr) = block.expr + && is_never_expr(cx, expr).is_some() + { return; } - lint_unneeded_unit_return(cx, ty, span); + lint_unneeded_unit_return(cx, hir_ty.span, span); } } - fn check_block(&mut self, cx: &EarlyContext<'_>, block: &ast::Block) { - if let Some(stmt) = block.stmts.last() - && let ast::StmtKind::Expr(ref expr) = stmt.kind + fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) { + if let ExprKind::Ret(Some(expr)) | ExprKind::Break(_, Some(expr)) = expr.kind && is_unit_expr(expr) + && !expr.span.from_expansion() + { + span_lint_and_sugg( + cx, + UNUSED_UNIT, + expr.span, + "unneeded `()`", + "remove the `()`", + String::new(), + Applicability::MachineApplicable, + ); + } + } + + fn check_poly_trait_ref(&mut self, cx: &LateContext<'tcx>, poly: &'tcx PolyTraitRef<'tcx>) { + let segments = &poly.trait_ref.path.segments; + + if segments.len() == 1 + && ["Fn", "FnMut", "FnOnce"].contains(&segments[0].ident.name.as_str()) + && let Some(args) = segments[0].args + && args.parenthesized == GenericArgsParentheses::ParenSugar + && let constraints = &args.constraints + && constraints.len() == 1 + && constraints[0].ident.name == sym::Output + && let AssocItemConstraintKind::Equality { term: Term::Ty(hir_ty) } = constraints[0].kind + && args.span_ext.hi() != poly.span.hi() + && !hir_ty.span.from_expansion() + && is_unit_ty(hir_ty) + { + lint_unneeded_unit_return(cx, hir_ty.span, poly.span); + } + } +} + +impl EarlyLintPass for UnusedUnit { + /// Check for unit expressions in blocks. This is left in the early pass because some macros + /// expand its inputs as-is, making it invisible to the late pass. See #4076. + fn check_block(&mut self, cx: &EarlyContext<'_>, block: &Block) { + if let Some(stmt) = block.stmts.last() + && let StmtKind::Expr(expr) = &stmt.kind + && let rustc_ast::ExprKind::Tup(inner) = &expr.kind + && inner.is_empty() && let ctxt = block.span.ctxt() && stmt.span.ctxt() == ctxt && expr.span.ctxt() == ctxt @@ -72,39 +141,10 @@ impl EarlyLintPass for UnusedUnit { ); } } +} - fn check_expr(&mut self, cx: &EarlyContext<'_>, e: &ast::Expr) { - match e.kind { - ast::ExprKind::Ret(Some(ref expr)) | ast::ExprKind::Break(_, Some(ref expr)) => { - if is_unit_expr(expr) && !expr.span.from_expansion() { - span_lint_and_sugg( - cx, - UNUSED_UNIT, - expr.span, - "unneeded `()`", - "remove the `()`", - String::new(), - Applicability::MachineApplicable, - ); - } - }, - _ => (), - } - } - - fn check_poly_trait_ref(&mut self, cx: &EarlyContext<'_>, poly: &ast::PolyTraitRef) { - let segments = &poly.trait_ref.path.segments; - - if segments.len() == 1 - && ["Fn", "FnMut", "FnOnce"].contains(&segments[0].ident.name.as_str()) - && let Some(args) = &segments[0].args - && let ast::GenericArgs::Parenthesized(generic_args) = &**args - && let ast::FnRetTy::Ty(ty) = &generic_args.output - && ty.kind.is_unit() - { - lint_unneeded_unit_return(cx, ty, generic_args.span); - } - } +fn is_unit_ty(ty: &Ty<'_>) -> bool { + matches!(ty.kind, TyKind::Tup([])) } // get the def site @@ -117,24 +157,15 @@ fn get_def(span: Span) -> Option { } } -// is this expr a `()` unit? -fn is_unit_expr(expr: &ast::Expr) -> bool { - if let ast::ExprKind::Tup(ref vals) = expr.kind { - vals.is_empty() - } else { - false - } -} - -fn lint_unneeded_unit_return(cx: &EarlyContext<'_>, ty: &ast::Ty, span: Span) { +fn lint_unneeded_unit_return(cx: &LateContext<'_>, ty_span: Span, span: Span) { let (ret_span, appl) = - span.with_hi(ty.span.hi()) + span.with_hi(ty_span.hi()) .get_source_text(cx) - .map_or((ty.span, Applicability::MaybeIncorrect), |src| { - position_before_rarrow(&src).map_or((ty.span, Applicability::MaybeIncorrect), |rpos| { + .map_or((ty_span, Applicability::MaybeIncorrect), |src| { + position_before_rarrow(&src).map_or((ty_span, Applicability::MaybeIncorrect), |rpos| { ( #[expect(clippy::cast_possible_truncation)] - ty.span.with_lo(BytePos(span.lo().0 + rpos as u32)), + ty_span.with_lo(BytePos(span.lo().0 + rpos as u32)), Applicability::MachineApplicable, ) }) diff --git a/tests/ui/unused_unit.edition2021.fixed b/tests/ui/unused_unit.edition2021.fixed new file mode 100644 index 0000000000000..93dd58b8e9d7b --- /dev/null +++ b/tests/ui/unused_unit.edition2021.fixed @@ -0,0 +1,146 @@ +//@revisions: edition2021 edition2024 +//@[edition2021] edition:2021 +//@[edition2024] edition:2024 + +// The output for humans should just highlight the whole span without showing +// the suggested replacement, but we also want to test that suggested +// replacement only removes one set of parentheses, rather than naïvely +// stripping away any starting or ending parenthesis characters—hence this +// test of the JSON error format. + +#![feature(custom_inner_attributes)] +#![feature(closure_lifetime_binder)] +#![rustfmt::skip] + +#![deny(clippy::unused_unit)] +#![allow(dead_code)] +#![allow(clippy::from_over_into)] + +struct Unitter; +impl Unitter { + #[allow(clippy::no_effect)] + pub fn get_unit(&self, f: F, _g: G) + //~^ unused_unit + //~| unused_unit + where G: Fn() { + //~^ unused_unit + let _y: &dyn Fn() = &f; + //~^ unused_unit + (); // this should not lint, as it's not in return type position + } +} + +impl Into<()> for Unitter { + #[rustfmt::skip] + fn into(self) { + //~^ unused_unit + + //~^ unused_unit + } +} + +trait Trait { + fn redundant(&self, _f: F, _g: G, _h: H) + //~^ unused_unit + where + G: FnMut(), + //~^ unused_unit + H: Fn(); + //~^ unused_unit +} + +impl Trait for Unitter { + fn redundant(&self, _f: F, _g: G, _h: H) + //~^ unused_unit + where + G: FnMut(), + //~^ unused_unit + H: Fn() {} + //~^ unused_unit +} + +fn return_unit() { } +//~^ unused_unit +//~| unused_unit + +#[allow(clippy::needless_return)] +#[allow(clippy::never_loop)] +#[allow(clippy::unit_cmp)] +fn main() { + let u = Unitter; + assert_eq!(u.get_unit(|| {}, return_unit), u.into()); + return_unit(); + loop { + break; + //~^ unused_unit + } + return; + //~^ unused_unit +} + +// https://github.com/rust-lang/rust-clippy/issues/4076 +fn foo() { + macro_rules! foo { + (recv($r:expr) -> $res:pat => $body:expr) => { + $body + } + } + + foo! { + recv(rx) -> _x => () + } +} + +#[rustfmt::skip] +fn test(){} +//~^ unused_unit + +#[rustfmt::skip] +fn test2(){} +//~^ unused_unit + +#[rustfmt::skip] +fn test3(){} +//~^ unused_unit + +fn macro_expr() { + macro_rules! e { + () => (()); + } + e!() +} + +mod issue9748 { + fn main() { + let _ = for<'a> |_: &'a u32| -> () {}; + } +} + +mod issue9949 { + fn main() { + #[doc = "documentation"] + () + } +} + +mod issue14577 { + trait Unit {} + impl Unit for () {} + + fn run(f: impl FnOnce() -> R) { + f(); + } + + #[allow(dependency_on_unit_never_type_fallback)] + fn bar() { + run(|| { todo!() }); + //~[edition2021]^ unused_unit + } + + struct UnitStruct; + impl UnitStruct { + fn apply Fn(&'c mut Self)>(&mut self, f: F) { + todo!() + } + } +} \ No newline at end of file diff --git a/tests/ui/unused_unit.edition2021.stderr b/tests/ui/unused_unit.edition2021.stderr new file mode 100644 index 0000000000000..13cc20d4d7adc --- /dev/null +++ b/tests/ui/unused_unit.edition2021.stderr @@ -0,0 +1,128 @@ +error: unneeded unit expression + --> tests/ui/unused_unit.rs:37:9 + | +LL | () + | ^^ help: remove the final `()` + | +note: the lint level is defined here + --> tests/ui/unused_unit.rs:15:9 + | +LL | #![deny(clippy::unused_unit)] + | ^^^^^^^^^^^^^^^^^^^ + +error: unneeded unit expression + --> tests/ui/unused_unit.rs:62:26 + | +LL | fn return_unit() -> () { () } + | ^^ help: remove the final `()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:22:28 + | +LL | pub fn get_unit (), G>(&self, f: F, _g: G) -> () + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:25:18 + | +LL | where G: Fn() -> () { + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:22:58 + | +LL | pub fn get_unit (), G>(&self, f: F, _g: G) -> () + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:27:26 + | +LL | let _y: &dyn Fn() -> () = &f; + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:35:18 + | +LL | fn into(self) -> () { + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:43:29 + | +LL | fn redundant (), G, H>(&self, _f: F, _g: G, _h: H) + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:46:19 + | +LL | G: FnMut() -> (), + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:48:16 + | +LL | H: Fn() -> (); + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:53:29 + | +LL | fn redundant (), G, H>(&self, _f: F, _g: G, _h: H) + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:56:19 + | +LL | G: FnMut() -> (), + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:58:16 + | +LL | H: Fn() -> () {} + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:62:17 + | +LL | fn return_unit() -> () { () } + | ^^^^^^ help: remove the `-> ()` + +error: unneeded `()` + --> tests/ui/unused_unit.rs:74:14 + | +LL | break(); + | ^^ help: remove the `()` + +error: unneeded `()` + --> tests/ui/unused_unit.rs:77:11 + | +LL | return(); + | ^^ help: remove the `()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:95:10 + | +LL | fn test()->(){} + | ^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:99:11 + | +LL | fn test2() ->(){} + | ^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:103:11 + | +LL | fn test3()-> (){} + | ^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:136:15 + | +LL | run(|| -> () { todo!() }); + | ^^^^^^ help: remove the `-> ()` + +error: aborting due to 20 previous errors + diff --git a/tests/ui/unused_unit.edition2024.fixed b/tests/ui/unused_unit.edition2024.fixed new file mode 100644 index 0000000000000..987d901b97df7 --- /dev/null +++ b/tests/ui/unused_unit.edition2024.fixed @@ -0,0 +1,146 @@ +//@revisions: edition2021 edition2024 +//@[edition2021] edition:2021 +//@[edition2024] edition:2024 + +// The output for humans should just highlight the whole span without showing +// the suggested replacement, but we also want to test that suggested +// replacement only removes one set of parentheses, rather than naïvely +// stripping away any starting or ending parenthesis characters—hence this +// test of the JSON error format. + +#![feature(custom_inner_attributes)] +#![feature(closure_lifetime_binder)] +#![rustfmt::skip] + +#![deny(clippy::unused_unit)] +#![allow(dead_code)] +#![allow(clippy::from_over_into)] + +struct Unitter; +impl Unitter { + #[allow(clippy::no_effect)] + pub fn get_unit(&self, f: F, _g: G) + //~^ unused_unit + //~| unused_unit + where G: Fn() { + //~^ unused_unit + let _y: &dyn Fn() = &f; + //~^ unused_unit + (); // this should not lint, as it's not in return type position + } +} + +impl Into<()> for Unitter { + #[rustfmt::skip] + fn into(self) { + //~^ unused_unit + + //~^ unused_unit + } +} + +trait Trait { + fn redundant(&self, _f: F, _g: G, _h: H) + //~^ unused_unit + where + G: FnMut(), + //~^ unused_unit + H: Fn(); + //~^ unused_unit +} + +impl Trait for Unitter { + fn redundant(&self, _f: F, _g: G, _h: H) + //~^ unused_unit + where + G: FnMut(), + //~^ unused_unit + H: Fn() {} + //~^ unused_unit +} + +fn return_unit() { } +//~^ unused_unit +//~| unused_unit + +#[allow(clippy::needless_return)] +#[allow(clippy::never_loop)] +#[allow(clippy::unit_cmp)] +fn main() { + let u = Unitter; + assert_eq!(u.get_unit(|| {}, return_unit), u.into()); + return_unit(); + loop { + break; + //~^ unused_unit + } + return; + //~^ unused_unit +} + +// https://github.com/rust-lang/rust-clippy/issues/4076 +fn foo() { + macro_rules! foo { + (recv($r:expr) -> $res:pat => $body:expr) => { + $body + } + } + + foo! { + recv(rx) -> _x => () + } +} + +#[rustfmt::skip] +fn test(){} +//~^ unused_unit + +#[rustfmt::skip] +fn test2(){} +//~^ unused_unit + +#[rustfmt::skip] +fn test3(){} +//~^ unused_unit + +fn macro_expr() { + macro_rules! e { + () => (()); + } + e!() +} + +mod issue9748 { + fn main() { + let _ = for<'a> |_: &'a u32| -> () {}; + } +} + +mod issue9949 { + fn main() { + #[doc = "documentation"] + () + } +} + +mod issue14577 { + trait Unit {} + impl Unit for () {} + + fn run(f: impl FnOnce() -> R) { + f(); + } + + #[allow(dependency_on_unit_never_type_fallback)] + fn bar() { + run(|| -> () { todo!() }); + //~[edition2021]^ unused_unit + } + + struct UnitStruct; + impl UnitStruct { + fn apply Fn(&'c mut Self)>(&mut self, f: F) { + todo!() + } + } +} \ No newline at end of file diff --git a/tests/ui/unused_unit.edition2024.stderr b/tests/ui/unused_unit.edition2024.stderr new file mode 100644 index 0000000000000..a79e70e066bd3 --- /dev/null +++ b/tests/ui/unused_unit.edition2024.stderr @@ -0,0 +1,122 @@ +error: unneeded unit expression + --> tests/ui/unused_unit.rs:37:9 + | +LL | () + | ^^ help: remove the final `()` + | +note: the lint level is defined here + --> tests/ui/unused_unit.rs:15:9 + | +LL | #![deny(clippy::unused_unit)] + | ^^^^^^^^^^^^^^^^^^^ + +error: unneeded unit expression + --> tests/ui/unused_unit.rs:62:26 + | +LL | fn return_unit() -> () { () } + | ^^ help: remove the final `()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:22:28 + | +LL | pub fn get_unit (), G>(&self, f: F, _g: G) -> () + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:25:18 + | +LL | where G: Fn() -> () { + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:22:58 + | +LL | pub fn get_unit (), G>(&self, f: F, _g: G) -> () + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:27:26 + | +LL | let _y: &dyn Fn() -> () = &f; + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:35:18 + | +LL | fn into(self) -> () { + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:43:29 + | +LL | fn redundant (), G, H>(&self, _f: F, _g: G, _h: H) + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:46:19 + | +LL | G: FnMut() -> (), + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:48:16 + | +LL | H: Fn() -> (); + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:53:29 + | +LL | fn redundant (), G, H>(&self, _f: F, _g: G, _h: H) + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:56:19 + | +LL | G: FnMut() -> (), + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:58:16 + | +LL | H: Fn() -> () {} + | ^^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:62:17 + | +LL | fn return_unit() -> () { () } + | ^^^^^^ help: remove the `-> ()` + +error: unneeded `()` + --> tests/ui/unused_unit.rs:74:14 + | +LL | break(); + | ^^ help: remove the `()` + +error: unneeded `()` + --> tests/ui/unused_unit.rs:77:11 + | +LL | return(); + | ^^ help: remove the `()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:95:10 + | +LL | fn test()->(){} + | ^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:99:11 + | +LL | fn test2() ->(){} + | ^^^^^ help: remove the `-> ()` + +error: unneeded unit return type + --> tests/ui/unused_unit.rs:103:11 + | +LL | fn test3()-> (){} + | ^^^^^ help: remove the `-> ()` + +error: aborting due to 19 previous errors + diff --git a/tests/ui/unused_unit.fixed b/tests/ui/unused_unit.fixed index e3c02681c9fd7..6668bf90c0924 100644 --- a/tests/ui/unused_unit.fixed +++ b/tests/ui/unused_unit.fixed @@ -120,3 +120,24 @@ mod issue9949 { () } } + +#[clippy::msrv = "1.85"] +mod issue14577 { + trait Unit {} + impl Unit for () {} + + fn run(f: impl FnOnce() -> R) { + f(); + } + + fn bar() { + run(|| -> () { todo!() }); + } + + struct UnitStruct; + impl UnitStruct { + fn apply Fn(&'c mut Self)>(&mut self, f: F) { + todo!() + } + } +} \ No newline at end of file diff --git a/tests/ui/unused_unit.rs b/tests/ui/unused_unit.rs index 4353026c594c1..b7645f7b6a263 100644 --- a/tests/ui/unused_unit.rs +++ b/tests/ui/unused_unit.rs @@ -1,4 +1,6 @@ - +//@revisions: edition2021 edition2024 +//@[edition2021] edition:2021 +//@[edition2024] edition:2024 // The output for humans should just highlight the whole span without showing // the suggested replacement, but we also want to test that suggested @@ -120,3 +122,25 @@ mod issue9949 { () } } + +mod issue14577 { + trait Unit {} + impl Unit for () {} + + fn run(f: impl FnOnce() -> R) { + f(); + } + + #[allow(dependency_on_unit_never_type_fallback)] + fn bar() { + run(|| -> () { todo!() }); + //~[edition2021]^ unused_unit + } + + struct UnitStruct; + impl UnitStruct { + fn apply Fn(&'c mut Self)>(&mut self, f: F) { + todo!() + } + } +} \ No newline at end of file diff --git a/tests/ui/unused_unit.stderr b/tests/ui/unused_unit.stderr index 172fe06550281..366f2142095ff 100644 --- a/tests/ui/unused_unit.stderr +++ b/tests/ui/unused_unit.stderr @@ -1,8 +1,8 @@ -error: unneeded unit return type - --> tests/ui/unused_unit.rs:20:58 +error: unneeded unit expression + --> tests/ui/unused_unit.rs:35:9 | -LL | pub fn get_unit (), G>(&self, f: F, _g: G) -> () - | ^^^^^^ help: remove the `-> ()` +LL | () + | ^^ help: remove the final `()` | note: the lint level is defined here --> tests/ui/unused_unit.rs:13:9 @@ -10,6 +10,12 @@ note: the lint level is defined here LL | #![deny(clippy::unused_unit)] | ^^^^^^^^^^^^^^^^^^^ +error: unneeded unit expression + --> tests/ui/unused_unit.rs:60:26 + | +LL | fn return_unit() -> () { () } + | ^^ help: remove the final `()` + error: unneeded unit return type --> tests/ui/unused_unit.rs:20:28 | @@ -22,6 +28,12 @@ error: unneeded unit return type LL | where G: Fn() -> () { | ^^^^^^ help: remove the `-> ()` +error: unneeded unit return type + --> tests/ui/unused_unit.rs:20:58 + | +LL | pub fn get_unit (), G>(&self, f: F, _g: G) -> () + | ^^^^^^ help: remove the `-> ()` + error: unneeded unit return type --> tests/ui/unused_unit.rs:25:26 | @@ -34,12 +46,6 @@ error: unneeded unit return type LL | fn into(self) -> () { | ^^^^^^ help: remove the `-> ()` -error: unneeded unit expression - --> tests/ui/unused_unit.rs:35:9 - | -LL | () - | ^^ help: remove the final `()` - error: unneeded unit return type --> tests/ui/unused_unit.rs:41:29 | @@ -82,12 +88,6 @@ error: unneeded unit return type LL | fn return_unit() -> () { () } | ^^^^^^ help: remove the `-> ()` -error: unneeded unit expression - --> tests/ui/unused_unit.rs:60:26 - | -LL | fn return_unit() -> () { () } - | ^^ help: remove the final `()` - error: unneeded `()` --> tests/ui/unused_unit.rs:72:14 | From 5123ad590461b236a90426556ddb2f6fd95311af Mon Sep 17 00:00:00 2001 From: yanglsh Date: Sun, 27 Apr 2025 16:28:06 +0800 Subject: [PATCH 39/90] Fix `zombie_processes` FP inside closures --- clippy_lints/src/zombie_processes.rs | 5 ++++- tests/ui/zombie_processes.rs | 22 ++++++++++++++++++++++ 2 files changed, 26 insertions(+), 1 deletion(-) diff --git a/clippy_lints/src/zombie_processes.rs b/clippy_lints/src/zombie_processes.rs index 39c1aab8967ad..09f1084fe7004 100644 --- a/clippy_lints/src/zombie_processes.rs +++ b/clippy_lints/src/zombie_processes.rs @@ -4,6 +4,7 @@ use clippy_utils::{fn_def_id, get_enclosing_block, path_to_local_id}; use rustc_ast::Mutability; use rustc_ast::visit::visit_opt; use rustc_errors::Applicability; +use rustc_hir::def_id::LocalDefId; use rustc_hir::intravisit::{Visitor, walk_block, walk_expr, walk_local}; use rustc_hir::{Expr, ExprKind, HirId, LetStmt, Node, PatKind, Stmt, StmtKind}; use rustc_lint::{LateContext, LateLintPass}; @@ -68,6 +69,7 @@ impl<'tcx> LateLintPass<'tcx> for ZombieProcesses { let mut vis = WaitFinder { cx, local_id, + body_id: cx.tcx.hir_enclosing_body_owner(expr.hir_id), state: VisitorState::WalkUpToLocal, early_return: None, missing_wait_branch: None, @@ -129,6 +131,7 @@ struct MaybeWait(Span); struct WaitFinder<'a, 'tcx> { cx: &'a LateContext<'tcx>, local_id: HirId, + body_id: LocalDefId, state: VisitorState, early_return: Option, // When joining two if branches where one of them doesn't call `wait()`, stores its span for more targeted help @@ -186,7 +189,7 @@ impl<'tcx> Visitor<'tcx> for WaitFinder<'_, 'tcx> { } } else { match ex.kind { - ExprKind::Ret(e) => { + ExprKind::Ret(e) if self.cx.tcx.hir_enclosing_body_owner(ex.hir_id) == self.body_id => { visit_opt!(self, visit_expr, e); if self.early_return.is_none() { self.early_return = Some(ex.span); diff --git a/tests/ui/zombie_processes.rs b/tests/ui/zombie_processes.rs index 25bbc02ffb762..395f9dd2defb5 100644 --- a/tests/ui/zombie_processes.rs +++ b/tests/ui/zombie_processes.rs @@ -176,3 +176,25 @@ fn return_wait() -> ExitStatus { let mut x = Command::new("").spawn().unwrap(); return x.wait().unwrap(); } + +mod issue14677 { + use std::io; + use std::process::Command; + + fn do_something Result<(), ()>>(f: F) { + todo!() + } + + fn foo() { + let mut child = Command::new("true").spawn().unwrap(); + let some_condition = true; + do_something(|| { + if some_condition { + return Err(()); + } + Ok(()) + }); + child.kill().unwrap(); + child.wait().unwrap(); + } +} From 451d73fbe2cbb4b03e4a8c08d44074b53c669035 Mon Sep 17 00:00:00 2001 From: Tshepang Mbambo Date: Mon, 28 Apr 2025 06:49:13 +0200 Subject: [PATCH 40/90] use repo name in push pr title I found "Rustc dev guide subtree update awkward" --- src/doc/rustc-dev-guide/josh-sync/src/sync.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/doc/rustc-dev-guide/josh-sync/src/sync.rs b/src/doc/rustc-dev-guide/josh-sync/src/sync.rs index cd64be6367032..41d96397faaba 100644 --- a/src/doc/rustc-dev-guide/josh-sync/src/sync.rs +++ b/src/doc/rustc-dev-guide/josh-sync/src/sync.rs @@ -194,7 +194,7 @@ impl GitSync { ); println!( // Open PR with `subtree update` title to silence the `no-merges` triagebot check - " https://github.com/{UPSTREAM_REPO}/compare/{github_user}:{branch}?quick_pull=1&title=Rustc+dev+guide+subtree+update&body=r?+@ghost" + " https://github.com/{UPSTREAM_REPO}/compare/{github_user}:{branch}?quick_pull=1&title=rustc-dev-guide+subtree+update&body=r?+@ghost" ); drop(josh); From bca637ce5d1745ecee0d510dfed5bc24dd30d194 Mon Sep 17 00:00:00 2001 From: Oli Scherer Date: Thu, 27 Feb 2025 09:46:46 +0000 Subject: [PATCH 41/90] Add or-patterns to pattern types --- clippy_utils/src/hir_utils.rs | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/clippy_utils/src/hir_utils.rs b/clippy_utils/src/hir_utils.rs index fe1fd70a9fa78..17368a7530d75 100644 --- a/clippy_utils/src/hir_utils.rs +++ b/clippy_utils/src/hir_utils.rs @@ -1117,6 +1117,11 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> { self.hash_const_arg(s); self.hash_const_arg(e); }, + TyPatKind::Or(variants) => { + for variant in variants.iter() { + self.hash_ty_pat(variant) + } + }, TyPatKind::Err(_) => {}, } } From 3d23917b2d331b92e59b73a50098f9f3b2bf5a9c Mon Sep 17 00:00:00 2001 From: Eric Huss Date: Mon, 28 Apr 2025 11:29:42 -0700 Subject: [PATCH 42/90] Add an example of the example of an edition migration lint It was observed that some people were missing the `edition20xx` rustdoc attribute. Although this probably won't solve that problem, I'd still like to highlight it as something to be aware of. --- src/doc/rustc-dev-guide/src/guides/editions.md | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/src/doc/rustc-dev-guide/src/guides/editions.md b/src/doc/rustc-dev-guide/src/guides/editions.md index ea207167791b7..750631dfe565d 100644 --- a/src/doc/rustc-dev-guide/src/guides/editions.md +++ b/src/doc/rustc-dev-guide/src/guides/editions.md @@ -193,6 +193,23 @@ When a user runs `cargo fix --edition`, cargo will pass the `--force-warn rust-2 flag to force all of these lints to appear during the edition migration. Cargo also passes `--cap-lints=allow` so that no other lints interfere with the edition migration. +Make sure that the example code sets the correct edition. The example should illustrate the previous edition, and show what the migration warning would look like. For example, this lint for a 2024 migration shows an example in 2021: + +```rust,ignore +declare_lint! { + /// The `keyword_idents_2024` lint detects ... + /// + /// ### Example + /// + /// ```rust,edition2021 + /// #![warn(keyword_idents_2024)] + /// fn gen() {} + /// ``` + /// + /// {{produces}} +} +``` + Migration lints can be either `Allow` or `Warn` by default. If it is `Allow`, users usually won't see this warning unless they are doing an edition migration manually or there is a problem during the migration. From b0e675bc5251bae6b4bf955d4dfdc3ee5b6f4922 Mon Sep 17 00:00:00 2001 From: Eric Huss Date: Mon, 28 Apr 2025 11:30:33 -0700 Subject: [PATCH 43/90] Add documentation on how to migration the edition of the standard library Based on lessons learned from 2024. There's probably still more details to say here since it was a ton of work. These are the major points that I remember. --- src/doc/rustc-dev-guide/src/guides/editions.md | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/src/doc/rustc-dev-guide/src/guides/editions.md b/src/doc/rustc-dev-guide/src/guides/editions.md index 750631dfe565d..99a61d29af48c 100644 --- a/src/doc/rustc-dev-guide/src/guides/editions.md +++ b/src/doc/rustc-dev-guide/src/guides/editions.md @@ -351,3 +351,21 @@ In general it is recommended to avoid these special cases except for very high v [into-iter]: https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html [panic-macro]: https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html [`non_fmt_panics`]: https://doc.rust-lang.org/nightly/rustc/lints/listing/warn-by-default.html#non-fmt-panics + +### Migrating the standard library edition + +Updating the edition of the standard library itself roughly involves the following process: + +- Wait until the newly stabilized edition has reached beta and the bootstrap compiler has been updated. +- Apply migration lints. This can be an involved process since some code is in external submodules[^std-submodules], and the standard library makes heavy use of conditional compilation. Also, running `cargo fix --edition` can be impractical on the standard library itself. One approach is to individually add `#![warn(...)]` at the top of each crate for each lint, run `./x check library`, apply the migrations, remove the `#![warn(...)]` and commit each migration separately. You'll likely need to run `./x check` with `--target` for many different targets to get full coverage (otherwise you'll likely spend days or weeks getting CI to pass)[^ed-docker]. See also the [advanced migration guide] for more tips. + - Apply migrations to [`backtrace-rs`]. [Example for 2024](https://github.com/rust-lang/backtrace-rs/pull/700). Note that this doesn't update the edition of the crate itself because that is published independently on crates.io, and that would otherwise restrict the minimum Rust version. Consider adding some `#![deny()]` attributes to avoid regressions until its edition gets updated. + - Apply migrations to [`stdarch`], and update its edition, and formatting. [Example for 2024](https://github.com/rust-lang/stdarch/pull/1710). + - Post PRs to update the backtrace and stdarch submodules, and wait for those to land. + - Apply migration lints to the standard library crates, and update their edition. I recommend working one crate at a time starting with `core`. [Example for 2024](https://github.com/rust-lang/rust/pull/138162). + +[^std-submodules]: This will hopefully change in the future to pull these submodules into `rust-lang/rust`. +[^ed-docker]: You'll also likely need to do a lot of testing for different targets, and this is where [docker testing](../tests/docker.md) comes in handy. + +[advanced migration guide]: https://doc.rust-lang.org/nightly/edition-guide/editions/advanced-migrations.html +[`backtrace-rs`]: https://github.com/rust-lang/backtrace-rs/ +[`stdarch`]: https://github.com/rust-lang/stdarch/ From 0aae3caf240b985d02de541cb3f2990eb6bbe927 Mon Sep 17 00:00:00 2001 From: Eric Huss Date: Mon, 28 Apr 2025 11:41:17 -0700 Subject: [PATCH 44/90] Update mdbook to 0.4.48 This updates to the latest version of mdbook which has had a variety of fixes of new features since the last update. Changelog: https://github.com/rust-lang/mdBook/blob/master/CHANGELOG.md#mdbook-0448 --- src/doc/rustc-dev-guide/.github/workflows/ci.yml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/doc/rustc-dev-guide/.github/workflows/ci.yml b/src/doc/rustc-dev-guide/.github/workflows/ci.yml index 415d0dc397dc9..daf5223cbd4ac 100644 --- a/src/doc/rustc-dev-guide/.github/workflows/ci.yml +++ b/src/doc/rustc-dev-guide/.github/workflows/ci.yml @@ -14,7 +14,7 @@ jobs: if: github.repository == 'rust-lang/rustc-dev-guide' runs-on: ubuntu-latest env: - MDBOOK_VERSION: 0.4.21 + MDBOOK_VERSION: 0.4.48 MDBOOK_LINKCHECK2_VERSION: 0.9.1 MDBOOK_MERMAID_VERSION: 0.12.6 MDBOOK_TOC_VERSION: 0.11.2 From 50500376b3f6b69be2b8daedacd11709849fb5bc Mon Sep 17 00:00:00 2001 From: Eric Huss Date: Mon, 28 Apr 2025 11:31:09 -0700 Subject: [PATCH 45/90] Add documentation on how to stabilize the compiler edition This adds documentation on how to stabilize the edition in the compiler. --- .../rustc-dev-guide/src/guides/editions.md | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/src/doc/rustc-dev-guide/src/guides/editions.md b/src/doc/rustc-dev-guide/src/guides/editions.md index 99a61d29af48c..9a92d4ebcb510 100644 --- a/src/doc/rustc-dev-guide/src/guides/editions.md +++ b/src/doc/rustc-dev-guide/src/guides/editions.md @@ -369,3 +369,22 @@ Updating the edition of the standard library itself roughly involves the followi [advanced migration guide]: https://doc.rust-lang.org/nightly/edition-guide/editions/advanced-migrations.html [`backtrace-rs`]: https://github.com/rust-lang/backtrace-rs/ [`stdarch`]: https://github.com/rust-lang/stdarch/ + +## Stabilizing an edition + +After the edition team has given the go-ahead, the process for stabilizing an edition is roughly: + +- Update [`LATEST_STABLE_EDITION`]. +- Update [`Edition::is_stable`]. +- Hunt and find any document that refers to edition by number, and update it: + - [`--edition` flag](https://github.com/rust-lang/rust/blob/master/src/doc/rustc/src/command-line-arguments.md#--edition-specify-the-edition-to-use) + - [Rustdoc attributes](https://github.com/rust-lang/rust/blob/master/src/doc/rustdoc/src/write-documentation/documentation-tests.md#attributes) +- Clean up any tests that use the `//@ edition` header to remove the `-Zunstable-options` flag to ensure they are indeed stable. Note: Ideally this should be automated, see [#133582]. +- Bless any tests that change. +- Update `lint-docs` to default to the new edition. + +See [example for 2024](https://github.com/rust-lang/rust/pull/133349). + +[`LATEST_STABLE_EDITION`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_span/edition/constant.LATEST_STABLE_EDITION.html +[`Edition::is_stable`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_span/edition/enum.Edition.html#method.is_stable +[#133582]: https://github.com/rust-lang/rust/issues/133582 From c519510c29eb6a46e2bebe4cb240f80785495583 Mon Sep 17 00:00:00 2001 From: Urgau Date: Mon, 28 Apr 2025 20:40:27 +0200 Subject: [PATCH 46/90] Delay checking of `#[rustc_no_implicit_autorefs]` for reason --- compiler/rustc_lint/src/autorefs.rs | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/compiler/rustc_lint/src/autorefs.rs b/compiler/rustc_lint/src/autorefs.rs index 5dd26854c9570..ddab13190beb3 100644 --- a/compiler/rustc_lint/src/autorefs.rs +++ b/compiler/rustc_lint/src/autorefs.rs @@ -75,10 +75,9 @@ impl<'tcx> LateLintPass<'tcx> for ImplicitAutorefs { _ => return, }, ExprKind::Index(base, _, _) => base, - ExprKind::MethodCall(_, inner, _, _) - if let Some(def_id) = cx.typeck_results().type_dependent_def_id(expr.hir_id) - && cx.tcx.has_attr(def_id, sym::rustc_no_implicit_autorefs) => - { + ExprKind::MethodCall(_, inner, _, _) => { + // PERF: Checking of `#[rustc_no_implicit_refs]` is deferred below + // because checking for attribute is a bit costly. inner } ExprKind::Field(inner, _) => inner, @@ -99,6 +98,14 @@ impl<'tcx> LateLintPass<'tcx> for ImplicitAutorefs { peel_place_mappers(inner).kind // 1. Deref of a raw pointer. && typeck.expr_ty(dereferenced).is_raw_ptr() + // PERF: 5. b. A method call annotated with `#[rustc_no_implicit_refs]` + && match expr.kind { + ExprKind::MethodCall(..) => matches!( + cx.typeck_results().type_dependent_def_id(expr.hir_id), + Some(def_id) if cx.tcx.has_attr(def_id, sym::rustc_no_implicit_autorefs) + ), + _ => true, + } { cx.emit_span_lint( DANGEROUS_IMPLICIT_AUTOREFS, From 578ea26b8fdf67c830b8991051c1840ff0846e33 Mon Sep 17 00:00:00 2001 From: Piotr Osiewicz <24362066+osiewicz@users.noreply.github.com> Date: Tue, 29 Apr 2025 11:47:37 +0200 Subject: [PATCH 47/90] mono collector: Reduce \# of locking while walking the graph While profiling Zed's dev build I've noticed that while most of the time `upstream_monomorphizations` takes a lot of time in monomorpization_collector, in some cases (e.g. build of `editor` itself) the rest of monomorphization_collector_graph_walk dominates it. Most of the time is spent in collect_items_rec. This PR aims to reduce the number of locks taking place; instead of locking output MonoItems once per children of current node, we do so once per *parent*. We also get to reuse locks for mentioned and used items. While this commit does not reduce Wall time of Zed's build, it does shave off `cargo build -j1` from 43s to 41.5s. --- compiler/rustc_monomorphize/src/collector.rs | 64 +++++++++++--------- compiler/rustc_monomorphize/src/lib.rs | 1 + 2 files changed, 38 insertions(+), 27 deletions(-) diff --git a/compiler/rustc_monomorphize/src/collector.rs b/compiler/rustc_monomorphize/src/collector.rs index 76dad6b35714a..1e3744e19f54f 100644 --- a/compiler/rustc_monomorphize/src/collector.rs +++ b/compiler/rustc_monomorphize/src/collector.rs @@ -205,6 +205,7 @@ //! this is not implemented however: a mono item will be produced //! regardless of whether it is actually needed or not. +use std::cell::OnceCell; use std::path::PathBuf; use rustc_attr_parsing::InlineAttr; @@ -348,6 +349,27 @@ impl<'tcx> Extend>> for MonoItems<'tcx> { } } +fn collect_items_root<'tcx>( + tcx: TyCtxt<'tcx>, + starting_item: Spanned>, + state: &SharedState<'tcx>, + recursion_limit: Limit, +) { + if !state.visited.lock_mut().insert(starting_item.node) { + // We've been here already, no need to search again. + return; + } + let mut recursion_depths = DefIdMap::default(); + collect_items_rec( + tcx, + starting_item, + state, + &mut recursion_depths, + recursion_limit, + CollectionMode::UsedItems, + ); +} + /// Collect all monomorphized items reachable from `starting_point`, and emit a note diagnostic if a /// post-monomorphization error is encountered during a collection step. /// @@ -362,24 +384,6 @@ fn collect_items_rec<'tcx>( recursion_limit: Limit, mode: CollectionMode, ) { - if mode == CollectionMode::UsedItems { - if !state.visited.lock_mut().insert(starting_item.node) { - // We've been here already, no need to search again. - return; - } - } else { - if state.visited.lock().contains(&starting_item.node) { - // We've already done a *full* visit on this one, no need to do the "mention" visit. - return; - } - if !state.mentioned.lock_mut().insert(starting_item.node) { - // We've been here already, no need to search again. - return; - } - // There's some risk that we first do a 'mention' visit and then a full visit. But there's no - // harm in that, the mention visit will trigger all the queries and the results are cached. - } - let mut used_items = MonoItems::new(); let mut mentioned_items = MonoItems::new(); let recursion_depth_reset; @@ -536,6 +540,20 @@ fn collect_items_rec<'tcx>( state.usage_map.lock_mut().record_used(starting_item.node, &used_items); } + { + let mut visited = OnceCell::default(); + if mode == CollectionMode::UsedItems { + used_items + .items + .retain(|k, _| visited.get_mut_or_init(|| state.visited.lock_mut()).insert(*k)); + } + + let mut mentioned = OnceCell::default(); + mentioned_items.items.retain(|k, _| { + !visited.get_or_init(|| state.visited.lock()).contains(k) + && mentioned.get_mut_or_init(|| state.mentioned.lock_mut()).insert(*k) + }); + } if mode == CollectionMode::MentionedItems { assert!(used_items.is_empty(), "'mentioned' collection should never encounter used items"); } else { @@ -1689,15 +1707,7 @@ pub(crate) fn collect_crate_mono_items<'tcx>( tcx.sess.time("monomorphization_collector_graph_walk", || { par_for_each_in(roots, |root| { - let mut recursion_depths = DefIdMap::default(); - collect_items_rec( - tcx, - dummy_spanned(*root), - &state, - &mut recursion_depths, - recursion_limit, - CollectionMode::UsedItems, - ); + collect_items_root(tcx, dummy_spanned(*root), &state, recursion_limit); }); }); diff --git a/compiler/rustc_monomorphize/src/lib.rs b/compiler/rustc_monomorphize/src/lib.rs index 8469e0f17a69d..1b484da698aab 100644 --- a/compiler/rustc_monomorphize/src/lib.rs +++ b/compiler/rustc_monomorphize/src/lib.rs @@ -4,6 +4,7 @@ #![feature(file_buffered)] #![feature(if_let_guard)] #![feature(impl_trait_in_assoc_type)] +#![feature(once_cell_get_mut)] // tidy-alphabetical-end use rustc_hir::lang_items::LangItem; From c466cd01d8b6fdac7c506bad2b035df653bfd921 Mon Sep 17 00:00:00 2001 From: Stan Manilov Date: Tue, 29 Apr 2025 16:39:54 +0300 Subject: [PATCH 48/90] Update compiler-src.md Refactor the dependency structure from a nested unordered list to a single-level ordered list. IMO, this is clearer, but happy to close this PR without merging, if the change is not desired. --- src/doc/rustc-dev-guide/src/compiler-src.md | 25 ++++++++++----------- 1 file changed, 12 insertions(+), 13 deletions(-) diff --git a/src/doc/rustc-dev-guide/src/compiler-src.md b/src/doc/rustc-dev-guide/src/compiler-src.md index c538fc8b788d7..0d3cbebb4da09 100644 --- a/src/doc/rustc-dev-guide/src/compiler-src.md +++ b/src/doc/rustc-dev-guide/src/compiler-src.md @@ -62,21 +62,20 @@ huge. There is also the `rustc` crate which is the actual binary (i.e. the [`rustc_driver`] crate, which drives the various parts of compilation in other crates. -The dependency structure of these crates is complex, but roughly it is +The dependency order of these crates is complex, but roughly it is something like this: -- `rustc` (the binary) calls [`rustc_driver::main`][main]. - - [`rustc_driver`] depends on a lot of other crates, but the main one is - [`rustc_interface`]. - - [`rustc_interface`] depends on most of the other compiler crates. It - is a fairly generic interface for driving the whole compilation. - - Most of the other `rustc_*` crates depend on [`rustc_middle`], - which defines a lot of central data structures in the compiler. - - [`rustc_middle`] and most of the other crates depend on a - handful of crates representing the early parts of the - compiler (e.g. the parser), fundamental data structures (e.g. - [`Span`]), or error reporting: [`rustc_data_structures`], - [`rustc_span`], [`rustc_errors`], etc. +1. `rustc` (the binary) calls [`rustc_driver::main`][main]. +1. [`rustc_driver`] depends on a lot of other crates, but the main one is + [`rustc_interface`]. +1. [`rustc_interface`] depends on most of the other compiler crates. It is a + fairly generic interface for driving the whole compilation. +1. Most of the other `rustc_*` crates depend on [`rustc_middle`], which defines + a lot of central data structures in the compiler. +1. [`rustc_middle`] and most of the other crates depend on a handful of crates + representing the early parts of the compiler (e.g. the parser), fundamental + data structures (e.g. [`Span`]), or error reporting: + [`rustc_data_structures`], [`rustc_span`], [`rustc_errors`], etc. [`rustc_data_structures`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_data_structures/index.html [`rustc_driver`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_driver/index.html From 820fce61e72a1bc9c8eb132afec9ab71c67f4923 Mon Sep 17 00:00:00 2001 From: Oli Scherer Date: Tue, 29 Apr 2025 13:55:28 +0000 Subject: [PATCH 49/90] Some style nits --- compiler/rustc_mir_transform/src/shim.rs | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/compiler/rustc_mir_transform/src/shim.rs b/compiler/rustc_mir_transform/src/shim.rs index 0d9a04b760a2a..9688ac8ed2e27 100644 --- a/compiler/rustc_mir_transform/src/shim.rs +++ b/compiler/rustc_mir_transform/src/shim.rs @@ -298,10 +298,9 @@ fn local_decls_for_sig<'tcx>( fn dropee_emit_retag<'tcx>( tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>, - dropee_ptr: Place<'tcx>, + mut dropee_ptr: Place<'tcx>, span: Span, ) -> Place<'tcx> { - let mut dropee_ptr = dropee_ptr; if tcx.sess.opts.unstable_opts.mir_emit_retag { let source_info = SourceInfo::outermost(span); // We want to treat the function argument as if it was passed by `&mut`. As such, we @@ -365,8 +364,8 @@ fn build_drop_shim<'tcx>(tcx: TyCtxt<'tcx>, def_id: DefId, ty: Option>) new_body(source, blocks, local_decls_for_sig(&sig, span), sig.inputs().len(), span); // The first argument (index 0), but add 1 for the return value. - let mut dropee_ptr = Place::from(Local::new(1 + 0)); - dropee_ptr = dropee_emit_retag(tcx, &mut body, dropee_ptr, span); + let dropee_ptr = Place::from(Local::new(1 + 0)); + let dropee_ptr = dropee_emit_retag(tcx, &mut body, dropee_ptr, span); if ty.is_some() { let patch = { From a2b3f11700821d778d4dfbc3651a61a0f0f6f3be Mon Sep 17 00:00:00 2001 From: WANG Rui Date: Tue, 29 Apr 2025 22:12:27 +0800 Subject: [PATCH 50/90] Filter out LoongArch features not supported by the current LLVM version --- compiler/rustc_codegen_llvm/src/llvm_util.rs | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/compiler/rustc_codegen_llvm/src/llvm_util.rs b/compiler/rustc_codegen_llvm/src/llvm_util.rs index ae1bdac1655d3..c17b99f19468b 100644 --- a/compiler/rustc_codegen_llvm/src/llvm_util.rs +++ b/compiler/rustc_codegen_llvm/src/llvm_util.rs @@ -273,6 +273,12 @@ pub(crate) fn to_llvm_features<'a>(sess: &Session, s: &'a str) -> Option None, // only existed in 18 ("arm", "fp16") => Some(LLVMFeature::new("fullfp16")), // Filter out features that are not supported by the current LLVM version + ("loongarch64", "div32" | "lam-bh" | "lamcas" | "ld-seq-sa" | "scq") + if get_version().0 < 20 => + { + None + } + // Filter out features that are not supported by the current LLVM version ("riscv32" | "riscv64", "zacas") if get_version().0 < 20 => None, // Enable the evex512 target feature if an avx512 target feature is enabled. ("x86", s) if s.starts_with("avx512") => { From 74b55b4b865a6ca882e9006bcf7b87f5eb845f4b Mon Sep 17 00:00:00 2001 From: WANG Rui Date: Tue, 29 Apr 2025 22:15:11 +0800 Subject: [PATCH 51/90] Add comment to remind filtering unsupported features when adding new ones --- compiler/rustc_target/src/target_features.rs | 3 +++ 1 file changed, 3 insertions(+) diff --git a/compiler/rustc_target/src/target_features.rs b/compiler/rustc_target/src/target_features.rs index 69c8b9119ab23..007bfea887c80 100644 --- a/compiler/rustc_target/src/target_features.rs +++ b/compiler/rustc_target/src/target_features.rs @@ -102,6 +102,9 @@ impl Stability { // check whether they're named already elsewhere in rust // e.g. in stdarch and whether the given name matches LLVM's // if it doesn't, to_llvm_feature in llvm_util in rustc_codegen_llvm needs to be adapted. +// Additionally, if the feature is not available in older version of LLVM supported by the current +// rust, the same function must be updated to filter out these features to avoid triggering +// warnings. // // Also note that all target features listed here must be purely additive: for target_feature 1.1 to // be sound, we can never allow features like `+soft-float` (on x86) to be controlled on a From 9193dfe435559ff69c5b63b610c4e5ebac2ef23b Mon Sep 17 00:00:00 2001 From: Oli Scherer Date: Tue, 29 Apr 2025 14:23:23 +0000 Subject: [PATCH 52/90] Use a closure instead of three chained iterators --- compiler/rustc_middle/src/mir/terminator.rs | 103 ++++++++---------- compiler/rustc_mir_transform/src/coroutine.rs | 6 +- .../rustc_mir_transform/src/jump_threading.rs | 4 +- compiler/rustc_mir_transform/src/prettify.rs | 4 +- .../src/remove_noop_landing_pads.rs | 4 +- compiler/rustc_mir_transform/src/simplify.rs | 9 +- 6 files changed, 58 insertions(+), 72 deletions(-) diff --git a/compiler/rustc_middle/src/mir/terminator.rs b/compiler/rustc_middle/src/mir/terminator.rs index 8a1ead7d19d05..0834fa8844c00 100644 --- a/compiler/rustc_middle/src/mir/terminator.rs +++ b/compiler/rustc_middle/src/mir/terminator.rs @@ -437,8 +437,8 @@ impl<'tcx> Terminator<'tcx> { } #[inline] - pub fn successors_mut(&mut self) -> SuccessorsMut<'_> { - self.kind.successors_mut() + pub fn successors_mut<'a>(&'a mut self, f: impl FnMut(&'a mut BasicBlock)) { + self.kind.successors_mut(f) } #[inline] @@ -486,7 +486,6 @@ pub use helper::*; mod helper { use super::*; pub type Successors<'a> = impl DoubleEndedIterator + 'a; - pub type SuccessorsMut<'a> = impl DoubleEndedIterator + 'a; impl SwitchTargets { /// Like [`SwitchTargets::target_for_value`], but returning the same type as @@ -560,69 +559,63 @@ mod helper { } #[inline] - #[define_opaque(SuccessorsMut)] - pub fn successors_mut(&mut self) -> SuccessorsMut<'_> { + pub fn successors_mut<'a>(&'a mut self, mut f: impl FnMut(&'a mut BasicBlock)) { use self::TerminatorKind::*; - match *self { - // 3-successors for async drop: target, unwind, dropline (parent coroutine drop) - Drop { - target: ref mut t, - unwind: UnwindAction::Cleanup(ref mut u), - drop: Some(ref mut d), - .. - } => slice::from_mut(t).into_iter().chain(Some(u).into_iter().chain(Some(d))), - // 2-successors - Call { - target: Some(ref mut t), unwind: UnwindAction::Cleanup(ref mut u), .. + match self { + Drop { target, unwind, drop, .. } => { + f(target); + if let UnwindAction::Cleanup(u) = unwind { + f(u) + } + if let Some(d) = drop { + f(d) + } + } + Call { target, unwind, .. } => { + if let Some(target) = target { + f(target); + } + if let UnwindAction::Cleanup(u) = unwind { + f(u) + } } - | Yield { resume: ref mut t, drop: Some(ref mut u), .. } - | Drop { - target: ref mut t, - unwind: UnwindAction::Cleanup(ref mut u), - drop: None, - .. + Yield { resume, drop, .. } => { + f(resume); + if let Some(d) = drop { + f(d) + } } - | Drop { target: ref mut t, unwind: _, drop: Some(ref mut u), .. } - | Assert { target: ref mut t, unwind: UnwindAction::Cleanup(ref mut u), .. } - | FalseUnwind { - real_target: ref mut t, - unwind: UnwindAction::Cleanup(ref mut u), - } => slice::from_mut(t).into_iter().chain(Some(u).into_iter().chain(None)), - // single successor - Goto { target: ref mut t } - | Call { target: None, unwind: UnwindAction::Cleanup(ref mut t), .. } - | Call { target: Some(ref mut t), unwind: _, .. } - | Yield { resume: ref mut t, drop: None, .. } - | Drop { target: ref mut t, unwind: _, .. } - | Assert { target: ref mut t, unwind: _, .. } - | FalseUnwind { real_target: ref mut t, unwind: _ } => { - slice::from_mut(t).into_iter().chain(None.into_iter().chain(None)) + Assert { target, unwind, .. } | FalseUnwind { real_target: target, unwind } => { + f(target); + if let UnwindAction::Cleanup(u) = unwind { + f(u) + } + } + Goto { target } => { + f(target); } - // No successors UnwindResume | UnwindTerminate(_) | CoroutineDrop | Return | Unreachable - | TailCall { .. } - | Call { target: None, unwind: _, .. } => { - (&mut []).into_iter().chain(None.into_iter().chain(None)) - } - // Multiple successors - InlineAsm { ref mut targets, unwind: UnwindAction::Cleanup(ref mut u), .. } => { - targets.iter_mut().chain(Some(u).into_iter().chain(None)) - } - InlineAsm { ref mut targets, unwind: _, .. } => { - targets.iter_mut().chain(None.into_iter().chain(None)) + | TailCall { .. } => {} + InlineAsm { targets, unwind, .. } => { + for target in targets { + f(target); + } + if let UnwindAction::Cleanup(u) = unwind { + f(u) + } } - SwitchInt { ref mut targets, .. } => { - targets.targets.iter_mut().chain(None.into_iter().chain(None)) + SwitchInt { targets, .. } => { + for target in &mut targets.targets { + f(target); + } } - // FalseEdge - FalseEdge { ref mut real_target, ref mut imaginary_target } => { - slice::from_mut(real_target) - .into_iter() - .chain(Some(imaginary_target).into_iter().chain(None)) + FalseEdge { real_target, imaginary_target } => { + f(real_target); + f(imaginary_target); } } } diff --git a/compiler/rustc_mir_transform/src/coroutine.rs b/compiler/rustc_mir_transform/src/coroutine.rs index 263f0c40f5a5e..66f106bec6fca 100644 --- a/compiler/rustc_mir_transform/src/coroutine.rs +++ b/compiler/rustc_mir_transform/src/coroutine.rs @@ -1064,10 +1064,8 @@ fn insert_switch<'tcx>( }, ); - let blocks = body.basic_blocks_mut().iter_mut(); - - for target in blocks.flat_map(|b| b.terminator_mut().successors_mut()) { - *target += 1; + for b in body.basic_blocks_mut().iter_mut() { + b.terminator_mut().successors_mut(|target| *target += 1); } } diff --git a/compiler/rustc_mir_transform/src/jump_threading.rs b/compiler/rustc_mir_transform/src/jump_threading.rs index 9732225e48ddd..f1f5bcaaab110 100644 --- a/compiler/rustc_mir_transform/src/jump_threading.rs +++ b/compiler/rustc_mir_transform/src/jump_threading.rs @@ -765,12 +765,12 @@ impl OpportunitySet { // Replace `succ` by `new_succ` where it appears. let mut num_edges = 0; - for s in basic_blocks[current].terminator_mut().successors_mut() { + basic_blocks[current].terminator_mut().successors_mut(|s| { if *s == succ { *s = new_succ; num_edges += 1; } - } + }); // Update predecessors with the new block. let _new_succ = self.predecessors.push(num_edges); diff --git a/compiler/rustc_mir_transform/src/prettify.rs b/compiler/rustc_mir_transform/src/prettify.rs index 8ccfbe2f194b4..8217feff24eca 100644 --- a/compiler/rustc_mir_transform/src/prettify.rs +++ b/compiler/rustc_mir_transform/src/prettify.rs @@ -115,9 +115,7 @@ impl<'tcx> MutVisitor<'tcx> for BasicBlockUpdater<'tcx> { } fn visit_terminator(&mut self, terminator: &mut Terminator<'tcx>, _location: Location) { - for succ in terminator.successors_mut() { - *succ = self.map[*succ]; - } + terminator.successors_mut(|succ| *succ = self.map[*succ]); } } diff --git a/compiler/rustc_mir_transform/src/remove_noop_landing_pads.rs b/compiler/rustc_mir_transform/src/remove_noop_landing_pads.rs index 1dd34005d6641..797056ad52d4a 100644 --- a/compiler/rustc_mir_transform/src/remove_noop_landing_pads.rs +++ b/compiler/rustc_mir_transform/src/remove_noop_landing_pads.rs @@ -58,13 +58,13 @@ impl<'tcx> crate::MirPass<'tcx> for RemoveNoopLandingPads { } } - for target in body[bb].terminator_mut().successors_mut() { + body[bb].terminator_mut().successors_mut(|target| { if *target != resume_block && nop_landing_pads.contains(*target) { debug!(" folding noop jump to {:?} to resume block", target); *target = resume_block; jumps_folded += 1; } - } + }); let is_nop_landing_pad = self.is_nop_landing_pad(bb, body, &nop_landing_pads); if is_nop_landing_pad { diff --git a/compiler/rustc_mir_transform/src/simplify.rs b/compiler/rustc_mir_transform/src/simplify.rs index 4f2cce8ac1049..8f88228d9bbd8 100644 --- a/compiler/rustc_mir_transform/src/simplify.rs +++ b/compiler/rustc_mir_transform/src/simplify.rs @@ -147,9 +147,8 @@ impl<'a, 'tcx> CfgSimplifier<'a, 'tcx> { let mut terminator = self.basic_blocks[bb].terminator.take().expect("invalid terminator state"); - for successor in terminator.successors_mut() { - self.collapse_goto_chain(successor, &mut changed); - } + terminator + .successors_mut(|successor| self.collapse_goto_chain(successor, &mut changed)); let mut inner_changed = true; merged_blocks.clear(); @@ -375,9 +374,7 @@ pub(super) fn remove_dead_blocks(body: &mut Body<'_>) { } for block in basic_blocks { - for target in block.terminator_mut().successors_mut() { - *target = replacements[target.index()]; - } + block.terminator_mut().successors_mut(|target| *target = replacements[target.index()]); } } From e2fb99c97eaa30927b3b36de27d242ad673c491b Mon Sep 17 00:00:00 2001 From: Boxy Date: Tue, 29 Apr 2025 15:28:04 +0100 Subject: [PATCH 53/90] Introduce a normalization chapter --- src/doc/rustc-dev-guide/src/SUMMARY.md | 2 +- src/doc/rustc-dev-guide/src/normalization.md | 309 ++++++++++++++++++ .../src/solve/normalization.md | 127 ------- .../src/solve/significant-changes.md | 2 +- 4 files changed, 311 insertions(+), 129 deletions(-) create mode 100644 src/doc/rustc-dev-guide/src/normalization.md delete mode 100644 src/doc/rustc-dev-guide/src/solve/normalization.md diff --git a/src/doc/rustc-dev-guide/src/SUMMARY.md b/src/doc/rustc-dev-guide/src/SUMMARY.md index 68112d06167a0..6aa37fa9ec54b 100644 --- a/src/doc/rustc-dev-guide/src/SUMMARY.md +++ b/src/doc/rustc-dev-guide/src/SUMMARY.md @@ -156,6 +156,7 @@ - [ADTs and Generic Arguments](./ty_module/generic_arguments.md) - [Parameter types/consts/regions](./ty_module/param_ty_const_regions.md) - [`TypeFolder` and `TypeFoldable`](./ty-fold.md) +- [Aliases and Normalization](./normalization.md) - [Typing/Param Envs](./typing_parameter_envs.md) - [Type inference](./type-inference.md) - [Trait solving](./traits/resolution.md) @@ -175,7 +176,6 @@ - [Coinduction](./solve/coinduction.md) - [Caching](./solve/caching.md) - [Proof trees](./solve/proof-trees.md) - - [Normalization](./solve/normalization.md) - [Opaque types](./solve/opaque-types.md) - [Significant changes and quirks](./solve/significant-changes.md) - [`Unsize` and `CoerceUnsized` traits](./traits/unsize.md) diff --git a/src/doc/rustc-dev-guide/src/normalization.md b/src/doc/rustc-dev-guide/src/normalization.md new file mode 100644 index 0000000000000..43ee05b8b57ea --- /dev/null +++ b/src/doc/rustc-dev-guide/src/normalization.md @@ -0,0 +1,309 @@ +# Aliases and Normalization + + + +## Aliases + +In Rust there are a number of types that are considered equal to some "underlying" type, for example inherent associated types, trait associated types, free type aliases (`type Foo = u32`), and opaque types (`-> impl RPIT`). We consider such types to be "aliases", alias types are represented by the [`TyKind::Alias`][tykind_alias] variant, with the kind of alias tracked by the [`AliasTyKind`][aliaskind] enum. + +Normalization is the process of taking these alias types and replacing them with the underlying type that they are equal to. For example given some type alias `type Foo = u32`, normalizing `Foo` would give `u32`. + +The concept of an alias is not unique to *types* and the concept also applies to constants/const generics. However, right now in the compiler we don't really treat const aliases as a "first class concept" so this chapter mostly discusses things in the context of types (even though the concepts transfer just fine). + +[tykind_alias]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_type_ir/enum.TyKind.html#variant.Alias +[aliaskind]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_type_ir/enum.AliasTyKind.html + +### Rigid, Ambiguous and Unnormalized Aliases + +Aliases can either be "rigid", "ambiguous", or simply unnormalized. + +We consider types to be rigid if their "shape" isn't going to change, for example `Box` is rigid as no amount of normalization can turn a `Box` into a `u32`, whereas ` as Iterator>::Item` is not rigid as it can be normalized to `u32`. + +Aliases are rigid when we will never be able to normalize them further. A concrete example of a *rigid* alias would be `::Item` in an environment where there is no `T: Iterator` bound, only a `T: Iterator` bound: +```rust +fn foo() { + // This alias is *rigid* + let _: ::Item; +} + +fn bar>() { + // This alias is *not* rigid as it can be normalized to `u32` + let _: ::Item; +} +``` + +When an alias can't yet be normalized but may wind up normalizable in the [current environment](./typing_parameter_envs.md), we consider it to be an "ambiguous" alias. This can occur when an alias contains inference variables which prevent being able to determine how the trait is implemented: +```rust +fn foo() { + // This alias is considered to be "ambiguous" + let _: <_ as Iterator>::Item; +} +``` + +The reason we call them "ambiguous" aliases is because its *ambiguous* whether this is a rigid alias or not. + +The source of the `_: Iterator` trait impl is *ambiguous* (i.e. unknown), it could be some `impl Iterator for u32` or it could be some `T: Iterator` trait bound, we don't know yet. Depending on why `_: Iterator` holds the alias could be an unnormalized alias or it could be a rigid alias; it's *ambiguous* what kind of alias this is. + +Finally, an alias can just be unnormalized, ` as IntoIterator>::Iter` is an unnormalized alias as it can already be normalized to `std::vec::IntoIter`, it just hasn't been done yet. + +--- + +It is worth noting that Free and Inherent aliases cannot be rigid or ambiguous as naming them also implies having resolved the definition of the alias, which specifies the underlying type of the alias. + +### Diverging Aliases + +An alias is considered to "diverge" if its definition does not specify an underlying non-alias type to normalize to. A concrete example of diverging aliases: +```rust +type Diverges = Diverges; + +trait Trait { + type DivergingAssoc; +} +impl Trait for () { + type DivergingAssoc = <() as Trait>::DivergingAssoc; +} +``` +In this example both `Diverges` and `DivergingAssoc` are "trivial" cases of diverging type aliases where they have been defined as being equal to themselves. There is no underlying type that `Diverges` can ever be normalized to. + +We generally try to error when diverging aliases are defined, but this is entirely a "best effort" check. In the previous example the definitions are "simple enough" to be detected and so errors are emitted. However, in more complex cases, or cases where only some instantiations of generic parameters would result in a diverging alias, we don't emit an error: +```rust +trait Trait { + type DivergingAssoc; +} +impl Trait for T { + // This alias always diverges but we don't emit an error because + // the compiler can't "see" that. + type DivergingAssoc = ::DivergingAssoc; +} +``` + +Ultimately this means that we have no guarantee that aliases in the type system are non-diverging. As aliases may only diverge for some specific generic arguments, it also means that we only know whether an alias diverges once it is fully concrete. This means that codegen/const-evaluation also has to handle diverging aliases: +```rust +trait Trait { + type Diverges; +} +impl Trait for T { + type Diverges = ::Diverges; +} + +fn foo() { + let a: T::Diverges; +} + +fn main() { + foo::<()>(); +} +``` +In this example we only encounter an error from the diverging alias during codegen of `foo::<()>`, if the call to `foo` is removed then no compilation error will be emitted. + +### Opaque Types + +Opaque types are a relatively special kind of alias, and are covered in their own chapter: [Opaque types](./opaque-types-type-alias-impl-trait.md). + +### Const Aliases + +Unlike type aliases, const aliases are not represented directly in the type system, instead const aliases are always an anonymous body containing a path expression to a const item. This means that the only "const alias" in the type system is an anonymous unevaluated const body. + +As such there is no `ConstKind::Alias(AliasCtKind::Projection/Inherent/Free, _)`, instead we only have `ConstKind::Unevaluated` which is used for representing anonymous constants. + +```rust +fn foo() {} + +const FREE_CONST: usize = 1 + 1; + +fn bar() { + foo::<{ FREE_CONST }>(); + // The const arg is represented with some anonymous constant: + // ```pseudo-rust + // const ANON: usize = FREE_CONST; + // foo::(); + // ``` +} +``` + +This is likely to change as const generics functionality is improved, for example `feature(associated_const_equality)` and `feature(min_generic_const_args)` both require handling const aliases similarly to types (without an anonymous constant wrapping all const args). + +## What is Normalization + +### Structural vs Deep normalization + +There are two forms of normalization, structural (sometimes called *shallow*) and deep. Structural normalization should be thought of as only normalizing the "outermost" part of a type. On the other hand deep normalization will normalize *all* aliases in a type. + +In practice structural normalization can result in more than just the outer layer of the type being normalized[^1], but this behaviour should not be relied upon. Unnormalizable non-rigid aliases making use of bound variables (`for<'a>`) cannot be normalized by either kind of normalization. + +As an example: conceptually, structurally normalizing the type `Vec<::Assoc>` would be a no-op, whereas deeply normalizing would give `Vec`. In practice even structural normalization would give `Vec`, though, again, this should not be relied upon. + +Changing the alias to use bound variables will result in different behaviour; `Vec fn(<&'a u8 as Identity>::Assoc)>` would result in no change when structurally normalized, but would result in `Vec fn(&'a u8)>` when deeply normalized. + +### Core normalization logic + +Structurally normalizing aliases is a little bit more nuanced than replacing the alias with whatever it is defined as being equal to in its definition; the result of normalizing an alias should either be a rigid type or an inference variable (which will later be inferred to a rigid type). To accomplish this we do two things: + +First, when normalizing an ambiguous alias it is normalized to an inference variable instead of leaving it as-is, this has two main effects: +- Even though an inference variable is not a rigid type, it will always wind up inferred *to* a rigid type so we ensure that the result of normalization will not need to be normalized again +- Inference variables are used in all cases where a type is non-rigid, allowing the rest of the compiler to not have to deal with *both* ambiguous aliases *and* inference variables + +Secondly, instead of having normalization directly return the type specified in the definition of the alias, we normalize the type first before returning it[^1]. We do this so that normalization is idempotent/callers do not need to run it in a loop. + +```rust +#![feature(lazy_type_alias)] + +type Foo = Bar; +type Bar = ::Item; + +fn foo() { + let a_: Foo<_>; +} +``` + +In this example: +- Normalizing `Foo` would result in `Bar`, except we want to normalize aliases in the type `Foo` is defined as equal to +- Normalizing `Bar` would result in `::Item`, except, again, we want to normalize aliases in the type `Bar` is defined as equal to +- Normalizing `::Item` results in some new inference variable `?y`, as `::Item` is an ambiguous alias +- The final result is that normalizing `Foo` results in `?y` + +[^1]: In the new solver this is done implicitly + +## How to normalize + +When interfacing with the type system it will often be the case that it's necessary to request a type be normalized. There are a number of different entry points to the underlying normalization logic and each entry point should only be used in specific parts of the compiler. + +An additional complication is that the compiler is currently undergoing a transition from the old trait solver to the new trait solver. As part of this transition our approach to normalization in the compiler has changed somewhat significantly, resulting in some normalization entry points being "old solver only" slated for removal in the long-term once the new solver has stabilized. + +Here is a rough overview of the different entry points to normalization in the compiler: +- `infcx.at.structurally_normalize` +- `infcx.at.(deeply_)?normalize` +- `infcx.query_normalize` +- `tcx.normalize_erasing_regions` +- `traits::normalize_with_depth(_to)` +- `EvalCtxt::structurally_normalize` + +### Outside of the trait solver + +The [`InferCtxt`][infcx] type exposes the "main" ways to normalize during analysis: [`normalize`][normalize], [`deeply_normalize`][deeply_normalize] and [`structurally_normalize`][structurally_normalize]. These functions are often wrapped and re-exposed on various `InferCtxt` wrapper types, such as [`FnCtxt`][fcx] or [`ObligationCtxt`][ocx] with minor API tweaks to handle some arguments or parts of the return type automatically. + +#### Structural `InferCtxt` normalization + +[`infcx.at.structurally_normalize`][structurally_normalize] exposes structural normalization that is able to handle inference variables and regions. It should generally be used whenever inspecting the kind of a type. + +Inside of HIR Typeck there is a related method of normalization- [`fcx.structurally_resolve`][structurally_resolve], which will error if the type being resolved is an unresolved inference variable. When the new solver is enabled it will also attempt to structurally normalize the type. + +Due to this there is a pattern in HIR typeck where a type is first normalized via `normalize` (only normalizing in the old solver), and then `structurally_resolve`'d (only normalizing in the new solver). This pattern should be preferred over calling `structurally_normalize` during HIR typeck as `structurally_resolve` will attempt to make inference progress by evaluating goals whereas `structurally_normalize` does not. + +#### Deep `InferCtxt` normalization + +##### `infcx.at.(deeply_)?normalize` + +There are two ways to deeply normalize with an `InferCtxt`, `normalize` and `deeply_normalize`. The reason for this is that `normalize` is a "legacy" normalization entry point used only by the old solver, whereas `deeply_normalize` is intended to be the long term way to deeply normalize. Both of these methods can handle regions. + +When the new solver is stabilized the `infcx.at.normalize` function will be removed and everything will have been migrated to the new deep or structural normalization methods. For this reason the `normalize` function is a no-op under the new solver, making it suitable only when the old solver needs normalization but the new solver does not. + +Using `deeply_normalize` will result in errors being emitted when encountering ambiguous aliases[^1] as it is not possible to support normalizing *all* ambiguous aliases to inference variables[^2]. `deeply_normalize` should generally only be used in cases where we do not expect to encounter ambiguous aliases, for example when working with types from item signatures. + +[^1]: There is a subtle difference in how ambiguous aliases in binders are handled between old and new solver. In the old solver we fail to error on some ambiguous aliases inside of higher ranked types whereas the new solver correctly errors. + +[^2]: Ambiguous aliases inside of binders cannot be normalized to inference variables, this will be covered more later. + +##### `infcx.query_normalize` + +[`infcx.query_normalize`][query_norm] is very rarely used, it has almost all the same restrictions as `normalize_erasing_regions` (cannot handle inference variables, no diagnostics support) with the main difference being that it retains lifetime information. For this reason `normalize_erasing_regions` is the better choice in almost all circumstances as it is more efficient due to caching lifetime-erased queries. + +In practice `query_normalize` is used for normalization in the borrow checker, and elsewhere as a performance optimization over `infcx.normalize`. Once the new solver is stabilized it is expected that `query_normalize` can be removed from the compiler as the new solvers normalization implementation should be performant enough for it to not be a performance regression. + +##### `tcx.normalize_erasing_regions` + +[`normalize_erasing_regions`][norm_erasing_regions] is generally used by parts of the compiler that are not doing type system analysis. This normalization entry point does not handle inference variables, lifetimes, or any diagnostics. Lints and codegen make heavy use of this entry point as they typically are working with fully inferred aliases that can be assumed to be well formed (or at least, are not responsible for erroring on). + +[query_norm]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_trait_selection/infer/at/struct.At.html#method.query_normalize +[norm_erasing_regions]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/ty/struct.TyCtxt.html#method.normalize_erasing_regions +[normalize]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_trait_selection/infer/at/struct.At.html#method.normalize +[deeply_normalize]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_trait_selection/traits/normalize/trait.NormalizeExt.html#tymethod.deeply_normalize +[structurally_normalize]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_trait_selection/traits/trait.StructurallyNormalizeExt.html#tymethod.structurally_normalize_ty +[infcx]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_trait_selection/infer/struct.InferCtxt.html +[fcx]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_hir_typeck/fn_ctxt/struct.FnCtxt.html +[ocx]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_trait_selection/traits/struct.ObligationCtxt.html +[structurally_resolve]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_hir_typeck/fn_ctxt/struct.FnCtxt.html#method.structurally_resolve_type + +### Inside of the trait solver + +[`traits::normalize_with_depth(_to)`][norm_with_depth] and [`EvalCtxt::structurally_normalize`][eval_ctxt_structural_norm] are only used by the internals of the trait solvers (old and new respectively). It is effectively a raw entry point to the internals of how normalization is implemented by each trait solver. Other normalization entry points cannot be used from within the internals of trait solving as it wouldn't handle goal cycles and recursion depth correctly. + +[norm_with_depth]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_trait_selection/traits/normalize/fn.normalize_with_depth.html +[eval_ctxt_structural_norm]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_next_trait_solver/solve/struct.EvalCtxt.html#method.structurally_normalize_term + +## When/Where to normalize (Old vs New solver) + +One of the big changes between the old and new solver is our approach to when we expect aliases to be normalized. + +### Old solver + +All types are expected to be normalized as soon as possible, so that all types encountered in the type system are either rigid or an inference variable (which will later be inferred to a rigid term). + +As a concrete example: equality of aliases is implemented by assuming they're rigid and recursively equating the generic arguments of the alias. + +### New solver + +It's expected that all types potentially contain ambiguous or unnormalized aliases. Whenever an operation is performed that requires aliases to be normalized, it's the responsibility of that logic to normalize the alias (this means that matching on `ty.kind()` pretty much always has to structurally normalize first). + +As a concrete example: equality of aliases is implemented by a custom goal kind ([`PredicateKind::AliasRelate`][aliasrelate]) so that it can handle normalization of the aliases itself instead of assuming all alias types being equated are rigid. + +Despite this approach we still deeply normalize during [writeback][writeback] for performance/simplicity, so that types in the MIR can still be assumed to have been deeply normalized. + +[aliasrelate]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/ty/type.PredicateKind.html#variant.AliasRelate +[writeback]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_hir_typeck/writeback/index.html + +--- + +There were a few main issues with the old solver's approach to normalization that motivated changing things in the new solver: + +### Missing normalization calls + +It was a frequent occurrence that normalization calls would be missing, resulting in passing unnormalized types to APIs expecting everything to already be normalized. Treating ambiguous or unnormalized aliases as rigid would result in all sorts of weird errors from aliases not being considered equal to one another, or surprising inference guidance from equating unnormalized aliases' generic arguments. + +### Normalizing parameter environments + +Another problem was that it was not possible to normalize `ParamEnv`s correctly in the old solver as normalization itself would expect a normalized `ParamEnv` in order to give correct results. See the chapter on `ParamEnv`s for more information: [`Typing/ParamEnv`s: Normalizing all bounds](./typing_parameter_envs.md#normalizing-all-bounds) + +### Unnormalizable non-rigid aliases in higher ranked types + +Given a type such as `for<'a> fn(::Assoc>)`, it is not possible to correctly handle this with the old solver's approach to normalization. + +If we were to normalize it to `for<'a> fn(?y)` and register a goal to normalize `for<'a> >::Assoc -> ?y`, this would result in errors in cases where `>::Assoc` normalized to `&'a u32`. The inference variable `?y` would be in a lower [universe][universes] than the placeholders made when instantiating the `for<'a>` binder. + +Leaving the alias unnormalized would also be wrong as the old solver expects all aliases to be rigid. This was a soundness bug before the new solver was stabilized in coherence: [relating projection substs is unsound during coherence](https://github.com/rust-lang/rust/issues/102048). + +Ultimately this means that it is not always possible to ensure all aliases inside of a value are rigid. + +[universes]: https://rustc-dev-guide.rust-lang.org/borrow_check/region_inference/placeholders_and_universes.html#what-is-a-universe +[deeply_normalize]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_trait_selection/traits/normalize/trait.NormalizeExt.html#tymethod.deeply_normalize + +## Handling uses of diverging aliases + +Diverging aliases, like ambiguous aliases, are normalized to inference variables. As normalizing diverging aliases results in trait solver cycles, it always results in an error in the old solver. In the new solver it only results in an error if we wind up requiring all goals to hold in the current context. E.g. normalizing diverging aliases during HIR typeck will result in an error in both solvers. + +Alias well formedness doesn't require that the alias doesn't diverge[^1], this means that checking an alias is well formed isn't sufficient to cause an error to be emitted for diverging aliases; actually attempting to normalize the alias is required. + +Erroring on diverging aliases being a side effect of normalization means that it is very *arbitrary* whether we actually emit an error, it also differs between the old and new solver as we now normalize in less places. + +An example of the ad-hoc nature of erroring on diverging aliases causing "problems": +```rust +trait Trait { + type Diverges; +} + +impl Trait for T { + type Diverges = D::Diverges; +} + +struct Bar::Diverges>(Box); +``` + +In this example a diverging alias is used but we happen to not emit an error as we never explicitly normalize the defaults of generic parameters. If the `?Sized` opt out is removed then an error is emitted because we wind up happening to normalize a `::Diverges: Sized` goal which as a side effect results in erroring about the diverging alias. + +Const aliases differ from type aliases a bit here; well formedness of const aliases requires that they can be successfully evaluated (via [`ConstEvaluatable`][const_evaluatable] goals). This means that simply checking well formedness of const arguments is sufficient to error if they would fail to evaluate. It is somewhat unclear whether it would make sense to adopt this for type aliases too or if const aliases should stop requiring this for well formedness[^2]. + +[^1]: As checking aliases are non-diverging cannot be done until they are fully concrete, this would either imply that we cant check aliases are well formed before codegen/const-evaluation or that aliases would go from being well-formed to not well-formed after monomorphization. + +[^2]: Const aliases certainly wouldn't be *less* sound than type aliases if we stopped doing this + +[const_evaluatable]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/ty/type.ClauseKind.html#variant.ConstEvaluatable \ No newline at end of file diff --git a/src/doc/rustc-dev-guide/src/solve/normalization.md b/src/doc/rustc-dev-guide/src/solve/normalization.md deleted file mode 100644 index 99dc20c46b5d4..0000000000000 --- a/src/doc/rustc-dev-guide/src/solve/normalization.md +++ /dev/null @@ -1,127 +0,0 @@ -# Normalization in the new solver - -> FIXME: Normalization has been changed significantly since this chapter was written. - -With the new solver we've made some fairly significant changes to normalization when compared -to the existing implementation. - -We now differentiate between "one-step normalization", "structural normalization" and -"deep normalization". - -## One-step normalization - -One-step normalization is implemented via `NormalizesTo` goals. Unlike other goals -in the trait solver, `NormalizesTo` always expects the term to be an unconstrained -inference variable[^opaques]. Think of it as a function, taking an alias as input -and returning its underlying value. If the alias is rigid, `NormalizesTo` fails and -returns `NoSolution`. This is the case for `::Assoc` if there's a `T: Trait` -where-bound and for opaque types with `Reveal::UserFacing` unless they are in the -defining scope. We must not treat any aliases as rigid in coherence. - -The underlying value may itself be an unnormalized alias, e.g. -`NormalizesTo(<<() as Id>::This as Id>::This)` only returns `<() as Id>::This`, -even though that alias can be further normalized to `()`. As the term is -always an unconstrained inference variable, the expected term cannot influence -normalization, see [trait-system-refactor-initiative#22] for more. - -Only ever computing `NormalizesTo` goals with an unconstrained inference variable -requires special solver support. It is only used by `AliasRelate` goals and pending -`NormalizesTo` goals are tracked separately from other goals: [source][try-eval-norm]. -As the expected term is always erased in `NormalizesTo`, we have to return its -ambiguous nested goals to its caller as not doing so weakens inference. See -[#122687] for more details. - -[trait-system-refactor-initiative#22]: https://github.com/rust-lang/trait-system-refactor-initiative/issues/22 -[try-eval-norm]: https://github.com/rust-lang/rust/blob/2627e9f3012a97d3136b3e11bf6bd0853c38a534/compiler/rustc_trait_selection/src/solve/eval_ctxt/mod.rs#L523-L537 -[#122687]: https://github.com/rust-lang/rust/pull/122687 - -## `AliasRelate` and structural normalization - -We structurally normalize an alias by applying one-step normalization until -we end up with a rigid alias, ambiguity, or overflow. This is done by repeatedly -evaluating `NormalizesTo` goals inside of a snapshot: [source][structural_norm]. - -`AliasRelate(lhs, rhs)` is implemented by first structurally normalizing both the -`lhs` and the `rhs` and then relating the resulting rigid types (or inference -variables). Importantly, if `lhs` or `rhs` ends up as an alias, this alias can -now be treated as rigid and gets unified without emitting a nested `AliasRelate` -goal: [source][structural-relate]. - -This means that `AliasRelate` with an unconstrained `rhs` ends up functioning -similar to `NormalizesTo`, acting as a function which fully normalizes `lhs` -before assigning the resulting rigid type to an inference variable. This is used by -`fn structurally_normalize_ty` both [inside] and [outside] of the trait solver. -This has to be used whenever we match on the value of some type, both inside -and outside of the trait solver. - - - -[structural_norm]: https://github.com/rust-lang/rust/blob/2627e9f3012a97d3136b3e11bf6bd0853c38a534/compiler/rustc_trait_selection/src/solve/alias_relate.rs#L140-L175 -[structural-relate]: https://github.com/rust-lang/rust/blob/a0569fa8f91b5271e92d2f73fd252de7d3d05b9c/compiler/rustc_trait_selection/src/solve/alias_relate.rs#L88-L107 -[inside]: https://github.com/rust-lang/rust/blob/a0569fa8f91b5271e92d2f73fd252de7d3d05b9c/compiler/rustc_trait_selection/src/solve/mod.rs#L278-L299 -[outside]: https://github.com/rust-lang/rust/blob/a0569fa8f91b5271e92d2f73fd252de7d3d05b9c/compiler/rustc_trait_selection/src/traits/structural_normalize.rs#L17-L48 - -## Deep normalization - -By walking over a type, and using `fn structurally_normalize_ty` for each encountered -alias, it is possible to deeply normalize a type, normalizing all aliases as much as -possible. However, this only works for aliases referencing bound variables if they are -not ambiguous as we're unable to replace the alias with a corresponding inference -variable without leaking universes. - - - -[generalize-no-alias]: https://github.com/rust-lang/rust/blob/a0569fa8f91b5271e92d2f73fd252de7d3d05b9c/compiler/rustc_infer/src/infer/relate/generalize.rs#L353-L358 - -## Outside of the trait solver - -The core type system - relating types and trait solving - will not need deep -normalization with the new solver. There are still some areas which depend on it. -For these areas there is the function `At::deeply_normalize`. Without additional -trait solver support deep normalization does not always work in case of ambiguity. -Luckily deep normalization is currently only necessary in places where there is no ambiguity. -`At::deeply_normalize` immediately fails if there's ambiguity. - -If we only care about the outermost layer of types, we instead use -`At::structurally_normalize` or `FnCtxt::(try_)structurally_resolve_type`. -Unlike `At::deeply_normalize`, structural normalization is also used in cases where we -have to handle ambiguity. - -Because this may result in behavior changes depending on how the trait solver handles -ambiguity, it is safer to also require full normalization there. This happens in -`FnCtxt::structurally_resolve_type` which always emits a hard error if the self type ends -up as an inference variable. There are some existing places which have a fallback for -inference variables instead. These places use `try_structurally_resolve_type` instead. - -## Why deep normalization with ambiguity is hard - -Fully correct deep normalization is very challenging, especially with the new solver -given that we do not want to deeply normalize inside of the solver. Mostly deeply normalizing -but sometimes failing to do so is bound to cause very hard to minimize and understand bugs. -If possible, avoiding any reliance on deep normalization entirely therefore feels preferable. - -If the solver itself does not deeply normalize, any inference constraints returned by the -solver would require normalization. Handling this correctly is ugly. This also means that -we change goals we provide to the trait solver by "normalizing away" some projections. - -The way we (mostly) guarantee deep normalization with the old solver is by eagerly replacing -the projection with an inference variable and emitting a nested `Projection` goal. This works -as `Projection` goals in the old solver deeply normalize. Unless we add another `PredicateKind` -for deep normalization to the new solver we cannot emulate this behavior. This does not work -for projections with bound variables, sometimes leaving them unnormalized. An approach which -also supports projections with bound variables will be even more involved. - -[^opaques]: opaque types are currently handled a bit differently. this may change in the future diff --git a/src/doc/rustc-dev-guide/src/solve/significant-changes.md b/src/doc/rustc-dev-guide/src/solve/significant-changes.md index c82b5d468961a..eac8f0318fb19 100644 --- a/src/doc/rustc-dev-guide/src/solve/significant-changes.md +++ b/src/doc/rustc-dev-guide/src/solve/significant-changes.md @@ -106,4 +106,4 @@ their ambiguous nested goals are returned to the caller which then evaluates the See [#122687] for more details. [#122687]: https://github.com/rust-lang/rust/pull/122687 -[normalization]: ./normalization.md +[normalization]: ../normalization.md From 7f1ae9b8c093041ac0584080d8a836189c89bcb1 Mon Sep 17 00:00:00 2001 From: Boxy Date: Tue, 29 Apr 2025 19:35:26 +0100 Subject: [PATCH 54/90] Fix footnotes --- src/doc/rustc-dev-guide/src/normalization.md | 24 ++++++++++---------- 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/src/doc/rustc-dev-guide/src/normalization.md b/src/doc/rustc-dev-guide/src/normalization.md index 43ee05b8b57ea..ef530ccc5ed95 100644 --- a/src/doc/rustc-dev-guide/src/normalization.md +++ b/src/doc/rustc-dev-guide/src/normalization.md @@ -129,7 +129,7 @@ This is likely to change as const generics functionality is improved, for exampl There are two forms of normalization, structural (sometimes called *shallow*) and deep. Structural normalization should be thought of as only normalizing the "outermost" part of a type. On the other hand deep normalization will normalize *all* aliases in a type. -In practice structural normalization can result in more than just the outer layer of the type being normalized[^1], but this behaviour should not be relied upon. Unnormalizable non-rigid aliases making use of bound variables (`for<'a>`) cannot be normalized by either kind of normalization. +In practice structural normalization can result in more than just the outer layer of the type being normalized, but this behaviour should not be relied upon. Unnormalizable non-rigid aliases making use of bound variables (`for<'a>`) cannot be normalized by either kind of normalization. As an example: conceptually, structurally normalizing the type `Vec<::Assoc>` would be a no-op, whereas deeply normalizing would give `Vec`. In practice even structural normalization would give `Vec`, though, again, this should not be relied upon. @@ -162,8 +162,6 @@ In this example: - Normalizing `::Item` results in some new inference variable `?y`, as `::Item` is an ambiguous alias - The final result is that normalizing `Foo` results in `?y` -[^1]: In the new solver this is done implicitly - ## How to normalize When interfacing with the type system it will often be the case that it's necessary to request a type be normalized. There are a number of different entry points to the underlying normalization logic and each entry point should only be used in specific parts of the compiler. @@ -198,11 +196,7 @@ There are two ways to deeply normalize with an `InferCtxt`, `normalize` and `dee When the new solver is stabilized the `infcx.at.normalize` function will be removed and everything will have been migrated to the new deep or structural normalization methods. For this reason the `normalize` function is a no-op under the new solver, making it suitable only when the old solver needs normalization but the new solver does not. -Using `deeply_normalize` will result in errors being emitted when encountering ambiguous aliases[^1] as it is not possible to support normalizing *all* ambiguous aliases to inference variables[^2]. `deeply_normalize` should generally only be used in cases where we do not expect to encounter ambiguous aliases, for example when working with types from item signatures. - -[^1]: There is a subtle difference in how ambiguous aliases in binders are handled between old and new solver. In the old solver we fail to error on some ambiguous aliases inside of higher ranked types whereas the new solver correctly errors. - -[^2]: Ambiguous aliases inside of binders cannot be normalized to inference variables, this will be covered more later. +Using `deeply_normalize` will result in errors being emitted when encountering ambiguous aliases[^2] as it is not possible to support normalizing *all* ambiguous aliases to inference variables[^3]. `deeply_normalize` should generally only be used in cases where we do not expect to encounter ambiguous aliases, for example when working with types from item signatures. ##### `infcx.query_normalize` @@ -281,7 +275,7 @@ Ultimately this means that it is not always possible to ensure all aliases insid Diverging aliases, like ambiguous aliases, are normalized to inference variables. As normalizing diverging aliases results in trait solver cycles, it always results in an error in the old solver. In the new solver it only results in an error if we wind up requiring all goals to hold in the current context. E.g. normalizing diverging aliases during HIR typeck will result in an error in both solvers. -Alias well formedness doesn't require that the alias doesn't diverge[^1], this means that checking an alias is well formed isn't sufficient to cause an error to be emitted for diverging aliases; actually attempting to normalize the alias is required. +Alias well formedness doesn't require that the alias doesn't diverge[^4], this means that checking an alias is well formed isn't sufficient to cause an error to be emitted for diverging aliases; actually attempting to normalize the alias is required. Erroring on diverging aliases being a side effect of normalization means that it is very *arbitrary* whether we actually emit an error, it also differs between the old and new solver as we now normalize in less places. @@ -300,10 +294,16 @@ struct Bar::Diverges>(Box); In this example a diverging alias is used but we happen to not emit an error as we never explicitly normalize the defaults of generic parameters. If the `?Sized` opt out is removed then an error is emitted because we wind up happening to normalize a `::Diverges: Sized` goal which as a side effect results in erroring about the diverging alias. -Const aliases differ from type aliases a bit here; well formedness of const aliases requires that they can be successfully evaluated (via [`ConstEvaluatable`][const_evaluatable] goals). This means that simply checking well formedness of const arguments is sufficient to error if they would fail to evaluate. It is somewhat unclear whether it would make sense to adopt this for type aliases too or if const aliases should stop requiring this for well formedness[^2]. +Const aliases differ from type aliases a bit here; well formedness of const aliases requires that they can be successfully evaluated (via [`ConstEvaluatable`][const_evaluatable] goals). This means that simply checking well formedness of const arguments is sufficient to error if they would fail to evaluate. It is somewhat unclear whether it would make sense to adopt this for type aliases too or if const aliases should stop requiring this for well formedness[^5]. + +[^1]: In the new solver this is done implicitly + +[^2]: There is a subtle difference in how ambiguous aliases in binders are handled between old and new solver. In the old solver we fail to error on some ambiguous aliases inside of higher ranked types whereas the new solver correctly errors. + +[^3]: Ambiguous aliases inside of binders cannot be normalized to inference variables, this will be covered more later. -[^1]: As checking aliases are non-diverging cannot be done until they are fully concrete, this would either imply that we cant check aliases are well formed before codegen/const-evaluation or that aliases would go from being well-formed to not well-formed after monomorphization. +[^4]: As checking aliases are non-diverging cannot be done until they are fully concrete, this would either imply that we cant check aliases are well formed before codegen/const-evaluation or that aliases would go from being well-formed to not well-formed after monomorphization. -[^2]: Const aliases certainly wouldn't be *less* sound than type aliases if we stopped doing this +[^5]: Const aliases certainly wouldn't be *less* sound than type aliases if we stopped doing this [const_evaluatable]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/ty/type.ClauseKind.html#variant.ConstEvaluatable \ No newline at end of file From 48bbf5a91baeb5f1493ec00c7941bf08566ceb47 Mon Sep 17 00:00:00 2001 From: Tshepang Mbambo Date: Tue, 29 Apr 2025 23:39:06 +0200 Subject: [PATCH 55/90] for a more friendly output Also, these are normal Rust things (crates/packages), so remove the word *normal*. --- src/doc/rustc-dev-guide/src/compiler-src.md | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/src/doc/rustc-dev-guide/src/compiler-src.md b/src/doc/rustc-dev-guide/src/compiler-src.md index 0d3cbebb4da09..00aa96226849d 100644 --- a/src/doc/rustc-dev-guide/src/compiler-src.md +++ b/src/doc/rustc-dev-guide/src/compiler-src.md @@ -86,8 +86,12 @@ something like this: [`Span`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_span/struct.Span.html [main]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_driver/fn.main.html -You can see the exact dependencies by reading the [`Cargo.toml`] for the various -crates, just like a normal Rust crate. +You can see the exact dependencies by running `cargo tree`, +just like you would for any other Rust package: + +```console +cargo tree --package rustc_driver +``` One final thing: [`src/llvm-project`] is a submodule for our fork of LLVM. During bootstrapping, LLVM is built and the [`compiler/rustc_llvm`] crate From 146d8b95c88a9705449a2e3c65867efeed09602b Mon Sep 17 00:00:00 2001 From: Nikita Popov Date: Wed, 30 Apr 2025 09:14:12 +0200 Subject: [PATCH 56/90] Update to LLVM 20.1.4 --- src/llvm-project | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/llvm-project b/src/llvm-project index a9865ceca0810..8448283b4bd34 160000 --- a/src/llvm-project +++ b/src/llvm-project @@ -1 +1 @@ -Subproject commit a9865ceca08101071e25f3bba97bba8bf0ea9719 +Subproject commit 8448283b4bd34ea00d76fd4f18ec730b549d6e1d From f2930001aa6dd5f5056c69c96c1eaf4b31dfedd8 Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Fri, 25 Apr 2025 15:13:51 +0000 Subject: [PATCH 57/90] Use select in projection lookup --- .../traits/fulfillment_errors.rs | 42 ++++++++++--------- .../mismatch-two-relevant-impls.rs | 20 +++++++++ .../mismatch-two-relevant-impls.stderr | 20 +++++++++ 3 files changed, 62 insertions(+), 20 deletions(-) create mode 100644 tests/ui/associated-types/mismatch-two-relevant-impls.rs create mode 100644 tests/ui/associated-types/mismatch-two-relevant-impls.stderr diff --git a/compiler/rustc_trait_selection/src/error_reporting/traits/fulfillment_errors.rs b/compiler/rustc_trait_selection/src/error_reporting/traits/fulfillment_errors.rs index ab2aa0ae46976..970160ba212af 100644 --- a/compiler/rustc_trait_selection/src/error_reporting/traits/fulfillment_errors.rs +++ b/compiler/rustc_trait_selection/src/error_reporting/traits/fulfillment_errors.rs @@ -15,6 +15,7 @@ use rustc_hir::def_id::{DefId, LOCAL_CRATE, LocalDefId}; use rustc_hir::intravisit::Visitor; use rustc_hir::{self as hir, LangItem, Node}; use rustc_infer::infer::{InferOk, TypeTrace}; +use rustc_infer::traits::ImplSource; use rustc_infer::traits::solve::Goal; use rustc_middle::traits::SignatureMismatchData; use rustc_middle::traits::select::OverflowError; @@ -48,8 +49,8 @@ use crate::infer::{self, InferCtxt, InferCtxtExt as _}; use crate::traits::query::evaluate_obligation::InferCtxtExt as _; use crate::traits::{ MismatchedProjectionTypes, NormalizeExt, Obligation, ObligationCause, ObligationCauseCode, - ObligationCtxt, Overflow, PredicateObligation, SelectionError, SignatureMismatch, - TraitDynIncompatible, elaborate, + ObligationCtxt, Overflow, PredicateObligation, SelectionContext, SelectionError, + SignatureMismatch, TraitDynIncompatible, elaborate, specialization_graph, }; impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> { @@ -1495,32 +1496,33 @@ impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> { } } - let secondary_span = (|| { + let secondary_span = self.probe(|_| { let ty::PredicateKind::Clause(ty::ClauseKind::Projection(proj)) = predicate.kind().skip_binder() else { return None; }; - let mut associated_items = vec![]; - self.tcx.for_each_relevant_impl( - self.tcx.trait_of_item(proj.projection_term.def_id)?, - proj.projection_term.self_ty(), - |impl_def_id| { - associated_items.extend( - self.tcx.associated_items(impl_def_id).in_definition_order().find( - |assoc| { - assoc.trait_item_def_id == Some(proj.projection_term.def_id) - }, - ), - ); - }, - ); + let Ok(Some(ImplSource::UserDefined(impl_data))) = SelectionContext::new(self) + .poly_select(&obligation.with( + self.tcx, + predicate.kind().rebind(proj.projection_term.trait_ref(self.tcx)), + )) + else { + return None; + }; - let [associated_item]: &[ty::AssocItem] = &associated_items[..] else { + let Ok(node) = + specialization_graph::assoc_def(self.tcx, impl_data.impl_def_id, proj.def_id()) + else { return None; }; - match self.tcx.hir_get_if_local(associated_item.def_id) { + + if !node.is_final() { + return None; + } + + match self.tcx.hir_get_if_local(node.item.def_id) { Some( hir::Node::TraitItem(hir::TraitItem { kind: hir::TraitItemKind::Type(_, Some(ty)), @@ -1543,7 +1545,7 @@ impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> { )), _ => None, } - })(); + }); self.note_type_err( &mut diag, diff --git a/tests/ui/associated-types/mismatch-two-relevant-impls.rs b/tests/ui/associated-types/mismatch-two-relevant-impls.rs new file mode 100644 index 0000000000000..58fd567c27800 --- /dev/null +++ b/tests/ui/associated-types/mismatch-two-relevant-impls.rs @@ -0,0 +1,20 @@ +trait Tr { + type Assoc; +} + +struct W(T); + +impl Tr for W { + type Assoc = u32; +} + +impl Tr for W { + type Assoc = i32; +} + +fn needs_unit>() {} + +fn main() { + needs_unit::>(); + //~^ ERROR type mismatch resolving ` as Tr>::Assoc == ()` +} diff --git a/tests/ui/associated-types/mismatch-two-relevant-impls.stderr b/tests/ui/associated-types/mismatch-two-relevant-impls.stderr new file mode 100644 index 0000000000000..2a1f3ef23ca7b --- /dev/null +++ b/tests/ui/associated-types/mismatch-two-relevant-impls.stderr @@ -0,0 +1,20 @@ +error[E0271]: type mismatch resolving ` as Tr>::Assoc == ()` + --> $DIR/mismatch-two-relevant-impls.rs:18:18 + | +LL | needs_unit::>(); + | ^^^^^^ type mismatch resolving ` as Tr>::Assoc == ()` + | +note: expected this to be `()` + --> $DIR/mismatch-two-relevant-impls.rs:8:18 + | +LL | type Assoc = u32; + | ^^^ +note: required by a bound in `needs_unit` + --> $DIR/mismatch-two-relevant-impls.rs:15:21 + | +LL | fn needs_unit>() {} + | ^^^^^^^^^^ required by this bound in `needs_unit` + +error: aborting due to 1 previous error + +For more information about this error, try `rustc --explain E0271`. From 1157b78d62d61501e521afa0244aebab45ec6ba0 Mon Sep 17 00:00:00 2001 From: Sayantan Chakraborty <142906350+sayantn@users.noreply.github.com> Date: Fri, 18 Apr 2025 12:06:02 +0530 Subject: [PATCH 58/90] Remove `avx512dq` and `avx512vl` implication for `avx512fp16` --- compiler/rustc_target/src/target_features.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/compiler/rustc_target/src/target_features.rs b/compiler/rustc_target/src/target_features.rs index 69c8b9119ab23..e7f50c1356aad 100644 --- a/compiler/rustc_target/src/target_features.rs +++ b/compiler/rustc_target/src/target_features.rs @@ -398,7 +398,7 @@ static X86_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[ ("avx512cd", Unstable(sym::avx512_target_feature), &["avx512f"]), ("avx512dq", Unstable(sym::avx512_target_feature), &["avx512f"]), ("avx512f", Unstable(sym::avx512_target_feature), &["avx2", "fma", "f16c"]), - ("avx512fp16", Unstable(sym::avx512_target_feature), &["avx512bw", "avx512vl", "avx512dq"]), + ("avx512fp16", Unstable(sym::avx512_target_feature), &["avx512bw"]), ("avx512ifma", Unstable(sym::avx512_target_feature), &["avx512f"]), ("avx512vbmi", Unstable(sym::avx512_target_feature), &["avx512bw"]), ("avx512vbmi2", Unstable(sym::avx512_target_feature), &["avx512bw"]), From adb92aeb4a1f6cd8313fa880c19a39a8caefbded Mon Sep 17 00:00:00 2001 From: Tsukasa OI Date: Wed, 30 Apr 2025 05:48:51 +0000 Subject: [PATCH 59/90] rustc_target: Adjust RISC-V feature implication (Za64rs and Za128rs) The Za64rs extension (reservation set -- a primitive memory unit of LR/SC atomic operations -- is naturally aligned and *at most* 64 bytes) is a superset of the Za128rs extension (*at most* 128 bytes; note that smaller the reservation set is, more fine grained control over atomics). This commit handles this as a feature implication. --- compiler/rustc_target/src/target_features.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/compiler/rustc_target/src/target_features.rs b/compiler/rustc_target/src/target_features.rs index 69c8b9119ab23..9031e0530c583 100644 --- a/compiler/rustc_target/src/target_features.rs +++ b/compiler/rustc_target/src/target_features.rs @@ -507,7 +507,7 @@ static RISCV_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[ ("unaligned-vector-mem", Unstable(sym::riscv_target_feature), &[]), ("v", Unstable(sym::riscv_target_feature), &["zvl128b", "zve64d"]), ("za128rs", Unstable(sym::riscv_target_feature), &[]), - ("za64rs", Unstable(sym::riscv_target_feature), &[]), + ("za64rs", Unstable(sym::riscv_target_feature), &["za128rs"]), // Za64rs ⊃ Za128rs ("zaamo", Unstable(sym::riscv_target_feature), &[]), ("zabha", Unstable(sym::riscv_target_feature), &["zaamo"]), ("zacas", Unstable(sym::riscv_target_feature), &["zaamo"]), From c6ed7869a13194748653f48350225bc9e0ced2ca Mon Sep 17 00:00:00 2001 From: Tsukasa OI Date: Wed, 30 Apr 2025 06:05:41 +0000 Subject: [PATCH 60/90] rustc_target: RISC-V: Add atomics/memory-related extensions This commit adds a part of RISC-V extensions that are mandatory part of the RVA23U64 profile (application-class processor profile) and related to memory/atomic constraints. The Zic64b extension constrains the cache line to naturally-aligned 64 bytes that would make certain memory operations (like zeroing the memory using the Zicboz extension) easier. The Zicbom and Zicbop extensions enable managing cache block-based operations (the Zicbop contains hints that will work as a NOP when this extension is absent and the Zicbom contains control instructions). Of which, the Zicbom extension is going to be discoverable from the Linux kernel (as of the version 6.15-rc4) and this commit prepares for corresponding stdarch changes. The Zicc* extensions add certain constraints to "the main memory" (usually true on the user mode application on the application-class processor but those extensions make sure such constraints exist). --- compiler/rustc_target/src/target_features.rs | 7 +++++++ tests/ui/check-cfg/target_feature.stderr | 7 +++++++ 2 files changed, 14 insertions(+) diff --git a/compiler/rustc_target/src/target_features.rs b/compiler/rustc_target/src/target_features.rs index 9031e0530c583..99f39b34b6298 100644 --- a/compiler/rustc_target/src/target_features.rs +++ b/compiler/rustc_target/src/target_features.rs @@ -531,7 +531,14 @@ static RISCV_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[ ("zfinx", Unstable(sym::riscv_target_feature), &["zicsr"]), ("zhinx", Unstable(sym::riscv_target_feature), &["zhinxmin"]), ("zhinxmin", Unstable(sym::riscv_target_feature), &["zfinx"]), + ("zic64b", Unstable(sym::riscv_target_feature), &[]), + ("zicbom", Unstable(sym::riscv_target_feature), &[]), + ("zicbop", Unstable(sym::riscv_target_feature), &[]), ("zicboz", Unstable(sym::riscv_target_feature), &[]), + ("ziccamoa", Unstable(sym::riscv_target_feature), &[]), + ("ziccif", Unstable(sym::riscv_target_feature), &[]), + ("zicclsm", Unstable(sym::riscv_target_feature), &[]), + ("ziccrse", Unstable(sym::riscv_target_feature), &[]), ("zicntr", Unstable(sym::riscv_target_feature), &["zicsr"]), ("zicond", Unstable(sym::riscv_target_feature), &[]), ("zicsr", Unstable(sym::riscv_target_feature), &[]), diff --git a/tests/ui/check-cfg/target_feature.stderr b/tests/ui/check-cfg/target_feature.stderr index 4f7b8345e86ad..1740587735499 100644 --- a/tests/ui/check-cfg/target_feature.stderr +++ b/tests/ui/check-cfg/target_feature.stderr @@ -329,7 +329,14 @@ LL | cfg!(target_feature = "_UNEXPECTED_VALUE"); `zfinx` `zhinx` `zhinxmin` +`zic64b` +`zicbom` +`zicbop` `zicboz` +`ziccamoa` +`ziccif` +`zicclsm` +`ziccrse` `zicntr` `zicond` `zicsr` From 501a539bbe74164384ebf42165b058bc01f6b5a2 Mon Sep 17 00:00:00 2001 From: Tsukasa OI Date: Wed, 30 Apr 2025 06:53:22 +0000 Subject: [PATCH 61/90] rustc_target: RISC-V: Add BF16 extensions This commit adds three ratified unprivileged RISC-V extensions related to BFloat16 (BF16) handling. Although that they are far from stabilization due to ABI issues, they are optional extensions of the RVA23U64 profile (application-class processor profile) and going to be discoverable from the Linux kernel (as of version 6.15-rc4). This commit mainly prepares runtime detection of those extensions. --- compiler/rustc_target/src/target_features.rs | 3 +++ tests/ui/check-cfg/target_feature.stderr | 3 +++ 2 files changed, 6 insertions(+) diff --git a/compiler/rustc_target/src/target_features.rs b/compiler/rustc_target/src/target_features.rs index 99f39b34b6298..009118f2d4ff4 100644 --- a/compiler/rustc_target/src/target_features.rs +++ b/compiler/rustc_target/src/target_features.rs @@ -526,6 +526,7 @@ static RISCV_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[ ("zcmop", Unstable(sym::riscv_target_feature), &["zca"]), ("zdinx", Unstable(sym::riscv_target_feature), &["zfinx"]), ("zfa", Unstable(sym::riscv_target_feature), &["f"]), + ("zfbfmin", Unstable(sym::riscv_target_feature), &["f"]), // and a subset of Zfhmin ("zfh", Unstable(sym::riscv_target_feature), &["zfhmin"]), ("zfhmin", Unstable(sym::riscv_target_feature), &["f"]), ("zfinx", Unstable(sym::riscv_target_feature), &["zicsr"]), @@ -565,6 +566,8 @@ static RISCV_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[ ("zve64d", Unstable(sym::riscv_target_feature), &["zve64f", "d"]), ("zve64f", Unstable(sym::riscv_target_feature), &["zve32f", "zve64x"]), ("zve64x", Unstable(sym::riscv_target_feature), &["zve32x", "zvl64b"]), + ("zvfbfmin", Unstable(sym::riscv_target_feature), &["zve32f"]), + ("zvfbfwma", Unstable(sym::riscv_target_feature), &["zfbfmin", "zvfbfmin"]), ("zvfh", Unstable(sym::riscv_target_feature), &["zvfhmin", "zve32f", "zfhmin"]), // Zvfh ⊃ Zvfhmin ("zvfhmin", Unstable(sym::riscv_target_feature), &["zve32f"]), ("zvkb", Unstable(sym::riscv_target_feature), &["zve32x"]), diff --git a/tests/ui/check-cfg/target_feature.stderr b/tests/ui/check-cfg/target_feature.stderr index 1740587735499..712ce941c54ce 100644 --- a/tests/ui/check-cfg/target_feature.stderr +++ b/tests/ui/check-cfg/target_feature.stderr @@ -324,6 +324,7 @@ LL | cfg!(target_feature = "_UNEXPECTED_VALUE"); `zcmop` `zdinx` `zfa` +`zfbfmin` `zfh` `zfhmin` `zfinx` @@ -363,6 +364,8 @@ LL | cfg!(target_feature = "_UNEXPECTED_VALUE"); `zve64d` `zve64f` `zve64x` +`zvfbfmin` +`zvfbfwma` `zvfh` `zvfhmin` `zvkb` From 482ad5c51e5cab94b43f823f3cc2f94c87553237 Mon Sep 17 00:00:00 2001 From: WANG Rui Date: Thu, 1 May 2025 08:34:22 +0800 Subject: [PATCH 62/90] Remove redundant min-llvm-version annotations for LoongArch tests --- tests/ui/abi/compatibility.rs | 1 - .../bad-reg.loongarch64_lp64d.stderr | 12 +++++------ .../bad-reg.loongarch64_lp64s.stderr | 20 +++++++++---------- tests/ui/asm/loongarch/bad-reg.rs | 1 - 4 files changed, 16 insertions(+), 18 deletions(-) diff --git a/tests/ui/abi/compatibility.rs b/tests/ui/abi/compatibility.rs index be649029c8630..68706f1e821ac 100644 --- a/tests/ui/abi/compatibility.rs +++ b/tests/ui/abi/compatibility.rs @@ -40,7 +40,6 @@ //@ revisions: loongarch64 //@[loongarch64] compile-flags: --target loongarch64-unknown-linux-gnu //@[loongarch64] needs-llvm-components: loongarch -//@[loongarch64] min-llvm-version: 20 //FIXME: wasm is disabled due to . //FIXME @ revisions: wasm //FIXME @[wasm] compile-flags: --target wasm32-unknown-unknown diff --git a/tests/ui/asm/loongarch/bad-reg.loongarch64_lp64d.stderr b/tests/ui/asm/loongarch/bad-reg.loongarch64_lp64d.stderr index c88f3af764266..0e54411965012 100644 --- a/tests/ui/asm/loongarch/bad-reg.loongarch64_lp64d.stderr +++ b/tests/ui/asm/loongarch/bad-reg.loongarch64_lp64d.stderr @@ -1,35 +1,35 @@ error: invalid register `$r0`: constant zero cannot be used as an operand for inline asm - --> $DIR/bad-reg.rs:23:18 + --> $DIR/bad-reg.rs:22:18 | LL | asm!("", out("$r0") _); | ^^^^^^^^^^^^ error: invalid register `$tp`: reserved for TLS - --> $DIR/bad-reg.rs:25:18 + --> $DIR/bad-reg.rs:24:18 | LL | asm!("", out("$tp") _); | ^^^^^^^^^^^^ error: invalid register `$sp`: the stack pointer cannot be used as an operand for inline asm - --> $DIR/bad-reg.rs:27:18 + --> $DIR/bad-reg.rs:26:18 | LL | asm!("", out("$sp") _); | ^^^^^^^^^^^^ error: invalid register `$r21`: reserved by the ABI - --> $DIR/bad-reg.rs:29:18 + --> $DIR/bad-reg.rs:28:18 | LL | asm!("", out("$r21") _); | ^^^^^^^^^^^^^ error: invalid register `$fp`: the frame pointer cannot be used as an operand for inline asm - --> $DIR/bad-reg.rs:31:18 + --> $DIR/bad-reg.rs:30:18 | LL | asm!("", out("$fp") _); | ^^^^^^^^^^^^ error: invalid register `$r31`: $r31 is used internally by LLVM and cannot be used as an operand for inline asm - --> $DIR/bad-reg.rs:33:18 + --> $DIR/bad-reg.rs:32:18 | LL | asm!("", out("$r31") _); | ^^^^^^^^^^^^^ diff --git a/tests/ui/asm/loongarch/bad-reg.loongarch64_lp64s.stderr b/tests/ui/asm/loongarch/bad-reg.loongarch64_lp64s.stderr index cb8e55a9722db..6d0410dc6a13f 100644 --- a/tests/ui/asm/loongarch/bad-reg.loongarch64_lp64s.stderr +++ b/tests/ui/asm/loongarch/bad-reg.loongarch64_lp64s.stderr @@ -1,59 +1,59 @@ error: invalid register `$r0`: constant zero cannot be used as an operand for inline asm - --> $DIR/bad-reg.rs:23:18 + --> $DIR/bad-reg.rs:22:18 | LL | asm!("", out("$r0") _); | ^^^^^^^^^^^^ error: invalid register `$tp`: reserved for TLS - --> $DIR/bad-reg.rs:25:18 + --> $DIR/bad-reg.rs:24:18 | LL | asm!("", out("$tp") _); | ^^^^^^^^^^^^ error: invalid register `$sp`: the stack pointer cannot be used as an operand for inline asm - --> $DIR/bad-reg.rs:27:18 + --> $DIR/bad-reg.rs:26:18 | LL | asm!("", out("$sp") _); | ^^^^^^^^^^^^ error: invalid register `$r21`: reserved by the ABI - --> $DIR/bad-reg.rs:29:18 + --> $DIR/bad-reg.rs:28:18 | LL | asm!("", out("$r21") _); | ^^^^^^^^^^^^^ error: invalid register `$fp`: the frame pointer cannot be used as an operand for inline asm - --> $DIR/bad-reg.rs:31:18 + --> $DIR/bad-reg.rs:30:18 | LL | asm!("", out("$fp") _); | ^^^^^^^^^^^^ error: invalid register `$r31`: $r31 is used internally by LLVM and cannot be used as an operand for inline asm - --> $DIR/bad-reg.rs:33:18 + --> $DIR/bad-reg.rs:32:18 | LL | asm!("", out("$r31") _); | ^^^^^^^^^^^^^ error: register class `freg` requires at least one of the following target features: d, f - --> $DIR/bad-reg.rs:37:26 + --> $DIR/bad-reg.rs:36:26 | LL | asm!("/* {} */", in(freg) f); | ^^^^^^^^^^ error: register class `freg` requires at least one of the following target features: d, f - --> $DIR/bad-reg.rs:39:26 + --> $DIR/bad-reg.rs:38:26 | LL | asm!("/* {} */", out(freg) _); | ^^^^^^^^^^^ error: register class `freg` requires at least one of the following target features: d, f - --> $DIR/bad-reg.rs:41:26 + --> $DIR/bad-reg.rs:40:26 | LL | asm!("/* {} */", in(freg) d); | ^^^^^^^^^^ error: register class `freg` requires at least one of the following target features: d, f - --> $DIR/bad-reg.rs:43:26 + --> $DIR/bad-reg.rs:42:26 | LL | asm!("/* {} */", out(freg) d); | ^^^^^^^^^^^ diff --git a/tests/ui/asm/loongarch/bad-reg.rs b/tests/ui/asm/loongarch/bad-reg.rs index db1c778e5a25c..685b460bc922c 100644 --- a/tests/ui/asm/loongarch/bad-reg.rs +++ b/tests/ui/asm/loongarch/bad-reg.rs @@ -1,7 +1,6 @@ //@ add-core-stubs //@ needs-asm-support //@ revisions: loongarch64_lp64d loongarch64_lp64s -//@ min-llvm-version: 20 //@[loongarch64_lp64d] compile-flags: --target loongarch64-unknown-linux-gnu //@[loongarch64_lp64d] needs-llvm-components: loongarch //@[loongarch64_lp64s] compile-flags: --target loongarch64-unknown-none-softfloat From f27ba892bd9cd535aa3674496dfa217b875539a6 Mon Sep 17 00:00:00 2001 From: David Tolnay Date: Wed, 30 Apr 2025 17:52:10 -0700 Subject: [PATCH 63/90] Update hashbrown dependency to unblock ExtractIf improvements --- Cargo.lock | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Cargo.lock b/Cargo.lock index 361d237b3af89..b45dec0d7cd3b 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -1502,9 +1502,9 @@ dependencies = [ [[package]] name = "hashbrown" -version = "0.15.2" +version = "0.15.3" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "bf151400ff0baff5465007dd2f3e717f3fe502074ca563069ce3a6629d07b289" +checksum = "84b26c544d002229e640969970a2e74021aadf6e2f96372b9c58eff97de08eb3" dependencies = [ "allocator-api2", "equivalent", From 3e0cbbb8999906722f0c6dd65c65235d437277a1 Mon Sep 17 00:00:00 2001 From: "Martin Ombura Jr." <8682597+martinomburajr@users.noreply.github.com> Date: Thu, 1 May 2025 04:01:42 +0000 Subject: [PATCH 64/90] adds 'with' to help clarify how to build a new compiler --- src/doc/rustc-dev-guide/src/building/bootstrapping/intro.md | 2 +- .../src/building/bootstrapping/what-bootstrapping-does.md | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/src/doc/rustc-dev-guide/src/building/bootstrapping/intro.md b/src/doc/rustc-dev-guide/src/building/bootstrapping/intro.md index f72918c8377fc..bb7dd8dd46341 100644 --- a/src/doc/rustc-dev-guide/src/building/bootstrapping/intro.md +++ b/src/doc/rustc-dev-guide/src/building/bootstrapping/intro.md @@ -7,7 +7,7 @@ of the same compiler. This raises a chicken-and-egg paradox: where did the first compiler come from? It must have been written in a different language. In Rust's case it was [written in OCaml][ocaml-compiler]. However it was abandoned long ago and the -only way to build a modern version of rustc is a slightly less modern +only way to build a modern version of rustc is with a slightly less modern version. This is exactly how `x.py` works: it downloads the current beta release of diff --git a/src/doc/rustc-dev-guide/src/building/bootstrapping/what-bootstrapping-does.md b/src/doc/rustc-dev-guide/src/building/bootstrapping/what-bootstrapping-does.md index ffcfe25962572..ac1fa51e3d99a 100644 --- a/src/doc/rustc-dev-guide/src/building/bootstrapping/what-bootstrapping-does.md +++ b/src/doc/rustc-dev-guide/src/building/bootstrapping/what-bootstrapping-does.md @@ -9,7 +9,7 @@ the same compiler. This raises a chicken-and-egg paradox: where did the first compiler come from? It must have been written in a different language. In Rust's case it was [written in OCaml][ocaml-compiler]. However it was abandoned long ago and the -only way to build a modern version of `rustc` is a slightly less modern version. +only way to build a modern version of `rustc` is with a slightly less modern version. This is exactly how [`./x.py`] works: it downloads the current beta release of `rustc`, then uses it to compile the new compiler. From 27eb27423382738ae8f6d3d40a96396c7c541a37 Mon Sep 17 00:00:00 2001 From: The rustc-dev-guide Cronjob Bot Date: Thu, 1 May 2025 04:05:40 +0000 Subject: [PATCH 65/90] Preparing for merge from rustc --- src/doc/rustc-dev-guide/rust-version | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/doc/rustc-dev-guide/rust-version b/src/doc/rustc-dev-guide/rust-version index 67fa25f22288f..66b4fe2bf3bf0 100644 --- a/src/doc/rustc-dev-guide/rust-version +++ b/src/doc/rustc-dev-guide/rust-version @@ -1 +1 @@ -deb947971c8748f5c6203548ce4af9022f21eaf0 +0c33fe2c3d3eecadd17a84b110bb067288a64f1c From 9a3a212dae6f23d5abd4d0f9ab474b74556a278e Mon Sep 17 00:00:00 2001 From: "Martin Ombura Jr." <8682597+martinomburajr@users.noreply.github.com> Date: Thu, 1 May 2025 04:07:27 +0000 Subject: [PATCH 66/90] adds commas --- src/doc/rustc-dev-guide/src/building/bootstrapping/intro.md | 2 +- .../src/building/bootstrapping/what-bootstrapping-does.md | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/src/doc/rustc-dev-guide/src/building/bootstrapping/intro.md b/src/doc/rustc-dev-guide/src/building/bootstrapping/intro.md index bb7dd8dd46341..7f53097824cc9 100644 --- a/src/doc/rustc-dev-guide/src/building/bootstrapping/intro.md +++ b/src/doc/rustc-dev-guide/src/building/bootstrapping/intro.md @@ -6,7 +6,7 @@ of the same compiler. This raises a chicken-and-egg paradox: where did the first compiler come from? It must have been written in a different language. In Rust's case it was -[written in OCaml][ocaml-compiler]. However it was abandoned long ago and the +[written in OCaml][ocaml-compiler]. However, it was abandoned long ago, and the only way to build a modern version of rustc is with a slightly less modern version. diff --git a/src/doc/rustc-dev-guide/src/building/bootstrapping/what-bootstrapping-does.md b/src/doc/rustc-dev-guide/src/building/bootstrapping/what-bootstrapping-does.md index ac1fa51e3d99a..a2930b3e42723 100644 --- a/src/doc/rustc-dev-guide/src/building/bootstrapping/what-bootstrapping-does.md +++ b/src/doc/rustc-dev-guide/src/building/bootstrapping/what-bootstrapping-does.md @@ -8,7 +8,7 @@ the same compiler. This raises a chicken-and-egg paradox: where did the first compiler come from? It must have been written in a different language. In Rust's case it was -[written in OCaml][ocaml-compiler]. However it was abandoned long ago and the +[written in OCaml][ocaml-compiler]. However, it was abandoned long ago, and the only way to build a modern version of `rustc` is with a slightly less modern version. This is exactly how [`./x.py`] works: it downloads the current beta release of From eec6cfb8dab2d20e58a44df0e1c52c5abf6b2d26 Mon Sep 17 00:00:00 2001 From: Tsukasa OI Date: Mon, 24 Mar 2025 00:23:46 +0000 Subject: [PATCH 67/90] rustc_target: RISC-V "Zfinx" is incompatible with {ILP32,LP64}[FD] ABIs Because RISC-V Calling Conventions note that: > This means code targeting the Zfinx extension always uses the ILP32, > ILP32E or LP64 integer calling-convention only ABIs as there is no > dedicated hardware floating-point register file. {ILP32,LP64}[FD] ABIs with hardware floating-point calling conventions are incompatible with the "Zfinx" extension. This commit adds "zfinx" to the incompatible feature list to those ABIs and tests whether trying to add "zdinx" (that is analogous to "zfinx" but in double-precision) on a LP64D ABI configuration results in an error (it also tests extension implication; "Zdinx" requires "Zfinx" extension). Link: RISC-V psABI specification version 1.0 --- compiler/rustc_target/src/target_features.rs | 8 ++++---- ...bidden-hardfloat-target-feature-attribute-e-d.rs} | 0 ...en-hardfloat-target-feature-attribute-e-d.stderr} | 2 +- ...den-hardfloat-target-feature-attribute-f-zfinx.rs | 12 ++++++++++++ ...hardfloat-target-feature-attribute-f-zfinx.stderr | 8 ++++++++ 5 files changed, 25 insertions(+), 5 deletions(-) rename tests/ui/target-feature/{forbidden-hardfloat-target-feature-attribute.rs => forbidden-hardfloat-target-feature-attribute-e-d.rs} (100%) rename tests/ui/target-feature/{forbidden-hardfloat-target-feature-attribute.stderr => forbidden-hardfloat-target-feature-attribute-e-d.stderr} (77%) create mode 100644 tests/ui/target-feature/forbidden-hardfloat-target-feature-attribute-f-zfinx.rs create mode 100644 tests/ui/target-feature/forbidden-hardfloat-target-feature-attribute-f-zfinx.stderr diff --git a/compiler/rustc_target/src/target_features.rs b/compiler/rustc_target/src/target_features.rs index 69c8b9119ab23..9c8c804e18cd7 100644 --- a/compiler/rustc_target/src/target_features.rs +++ b/compiler/rustc_target/src/target_features.rs @@ -963,12 +963,12 @@ impl Target { // about what the intended ABI is. match &*self.llvm_abiname { "ilp32d" | "lp64d" => { - // Requires d (which implies f), incompatible with e. - FeatureConstraints { required: &["d"], incompatible: &["e"] } + // Requires d (which implies f), incompatible with e and zfinx. + FeatureConstraints { required: &["d"], incompatible: &["e", "zfinx"] } } "ilp32f" | "lp64f" => { - // Requires f, incompatible with e. - FeatureConstraints { required: &["f"], incompatible: &["e"] } + // Requires f, incompatible with e and zfinx. + FeatureConstraints { required: &["f"], incompatible: &["e", "zfinx"] } } "ilp32" | "lp64" => { // Requires nothing, incompatible with e. diff --git a/tests/ui/target-feature/forbidden-hardfloat-target-feature-attribute.rs b/tests/ui/target-feature/forbidden-hardfloat-target-feature-attribute-e-d.rs similarity index 100% rename from tests/ui/target-feature/forbidden-hardfloat-target-feature-attribute.rs rename to tests/ui/target-feature/forbidden-hardfloat-target-feature-attribute-e-d.rs diff --git a/tests/ui/target-feature/forbidden-hardfloat-target-feature-attribute.stderr b/tests/ui/target-feature/forbidden-hardfloat-target-feature-attribute-e-d.stderr similarity index 77% rename from tests/ui/target-feature/forbidden-hardfloat-target-feature-attribute.stderr rename to tests/ui/target-feature/forbidden-hardfloat-target-feature-attribute-e-d.stderr index bfe767e5ffb07..84d27463b38cd 100644 --- a/tests/ui/target-feature/forbidden-hardfloat-target-feature-attribute.stderr +++ b/tests/ui/target-feature/forbidden-hardfloat-target-feature-attribute-e-d.stderr @@ -1,5 +1,5 @@ error: target feature `d` cannot be enabled with `#[target_feature]`: this feature is incompatible with the target ABI - --> $DIR/forbidden-hardfloat-target-feature-attribute.rs:10:18 + --> $DIR/forbidden-hardfloat-target-feature-attribute-e-d.rs:10:18 | LL | #[target_feature(enable = "d")] | ^^^^^^^^^^^^ diff --git a/tests/ui/target-feature/forbidden-hardfloat-target-feature-attribute-f-zfinx.rs b/tests/ui/target-feature/forbidden-hardfloat-target-feature-attribute-f-zfinx.rs new file mode 100644 index 0000000000000..d74f4a1d4b170 --- /dev/null +++ b/tests/ui/target-feature/forbidden-hardfloat-target-feature-attribute-f-zfinx.rs @@ -0,0 +1,12 @@ +//! Ensure ABI-incompatible features cannot be enabled via `#[target_feature]`. +//@ compile-flags: --target=riscv64gc-unknown-linux-gnu --crate-type=lib +//@ needs-llvm-components: riscv +#![feature(no_core, lang_items, riscv_target_feature)] +#![no_core] + +#[lang = "sized"] +pub trait Sized {} + +#[target_feature(enable = "zdinx")] +//~^ERROR: cannot be enabled with +pub unsafe fn my_fun() {} diff --git a/tests/ui/target-feature/forbidden-hardfloat-target-feature-attribute-f-zfinx.stderr b/tests/ui/target-feature/forbidden-hardfloat-target-feature-attribute-f-zfinx.stderr new file mode 100644 index 0000000000000..af0e53f34f23a --- /dev/null +++ b/tests/ui/target-feature/forbidden-hardfloat-target-feature-attribute-f-zfinx.stderr @@ -0,0 +1,8 @@ +error: target feature `zfinx` cannot be enabled with `#[target_feature]`: this feature is incompatible with the target ABI + --> $DIR/forbidden-hardfloat-target-feature-attribute-f-zfinx.rs:10:18 + | +LL | #[target_feature(enable = "zdinx")] + | ^^^^^^^^^^^^^^^^ + +error: aborting due to 1 previous error + From 8a91bbfa91a5e2e269131f1da7b84d87cf2b4591 Mon Sep 17 00:00:00 2001 From: Philipp Krones Date: Thu, 1 May 2025 09:50:54 +0200 Subject: [PATCH 68/90] Bump nightly version -> 2025-05-01 --- clippy_utils/README.md | 2 +- rust-toolchain.toml | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/clippy_utils/README.md b/clippy_utils/README.md index aceff14a1599c..66192f866fa0e 100644 --- a/clippy_utils/README.md +++ b/clippy_utils/README.md @@ -8,7 +8,7 @@ This crate is only guaranteed to build with this `nightly` toolchain: ``` -nightly-2025-04-22 +nightly-2025-05-01 ``` diff --git a/rust-toolchain.toml b/rust-toolchain.toml index d2f79da1a541b..39c7f0e4ad5a5 100644 --- a/rust-toolchain.toml +++ b/rust-toolchain.toml @@ -1,6 +1,6 @@ [toolchain] # begin autogenerated nightly -channel = "nightly-2025-04-22" +channel = "nightly-2025-05-01" # end autogenerated nightly components = ["cargo", "llvm-tools", "rust-src", "rust-std", "rustc", "rustc-dev", "rustfmt"] profile = "minimal" From 3e969d433d5c4f7001e14dba1c9a00a591937a4f Mon Sep 17 00:00:00 2001 From: Mara Bos Date: Thu, 1 May 2025 11:53:24 +0200 Subject: [PATCH 69/90] Move core::fmt::Arguments::new_v1* to rt.rs. --- library/core/src/fmt/mod.rs | 35 ----------------------------- library/core/src/fmt/rt.rs | 45 ++++++++++++++++++++++++++++++++++++- 2 files changed, 44 insertions(+), 36 deletions(-) diff --git a/library/core/src/fmt/mod.rs b/library/core/src/fmt/mod.rs index 580f95eddce71..4f7f8a5b84dd5 100644 --- a/library/core/src/fmt/mod.rs +++ b/library/core/src/fmt/mod.rs @@ -622,44 +622,9 @@ pub struct Arguments<'a> { args: &'a [rt::Argument<'a>], } -/// Used by the format_args!() macro to create a fmt::Arguments object. #[doc(hidden)] #[unstable(feature = "fmt_internals", issue = "none")] impl<'a> Arguments<'a> { - #[inline] - pub const fn new_const(pieces: &'a [&'static str; N]) -> Self { - const { assert!(N <= 1) }; - Arguments { pieces, fmt: None, args: &[] } - } - - /// When using the format_args!() macro, this function is used to generate the - /// Arguments structure. - #[inline] - pub const fn new_v1( - pieces: &'a [&'static str; P], - args: &'a [rt::Argument<'a>; A], - ) -> Arguments<'a> { - const { assert!(P >= A && P <= A + 1, "invalid args") } - Arguments { pieces, fmt: None, args } - } - - /// Specifies nonstandard formatting parameters. - /// - /// An `rt::UnsafeArg` is required because the following invariants must be held - /// in order for this function to be safe: - /// 1. The `pieces` slice must be at least as long as `fmt`. - /// 2. Every `rt::Placeholder::position` value within `fmt` must be a valid index of `args`. - /// 3. Every `rt::Count::Param` within `fmt` must contain a valid index of `args`. - #[inline] - pub const fn new_v1_formatted( - pieces: &'a [&'static str], - args: &'a [rt::Argument<'a>], - fmt: &'a [rt::Placeholder], - _unsafe_arg: rt::UnsafeArg, - ) -> Arguments<'a> { - Arguments { pieces, fmt: Some(fmt), args } - } - /// Estimates the length of the formatted text. /// /// This is intended to be used for setting initial `String` capacity diff --git a/library/core/src/fmt/rt.rs b/library/core/src/fmt/rt.rs index e409771362e47..ec5015e06d2cb 100644 --- a/library/core/src/fmt/rt.rs +++ b/library/core/src/fmt/rt.rs @@ -1,7 +1,10 @@ #![allow(missing_debug_implementations)] #![unstable(feature = "fmt_internals", reason = "internal to format_args!", issue = "none")] -//! These are the lang items used by format_args!(). +//! All types and methods in this file are used by the compiler in +//! the expansion/lowering of format_args!(). +//! +//! Do not modify them without understanding the consequences for the format_args!() macro. use super::*; use crate::hint::unreachable_unchecked; @@ -229,3 +232,43 @@ impl UnsafeArg { Self { _private: () } } } + +/// Used by the format_args!() macro to create a fmt::Arguments object. +#[doc(hidden)] +#[unstable(feature = "fmt_internals", issue = "none")] +#[rustc_diagnostic_item = "FmtArgumentsNew"] +impl<'a> Arguments<'a> { + #[inline] + pub const fn new_const(pieces: &'a [&'static str; N]) -> Self { + const { assert!(N <= 1) }; + Arguments { pieces, fmt: None, args: &[] } + } + + /// When using the format_args!() macro, this function is used to generate the + /// Arguments structure. + #[inline] + pub const fn new_v1( + pieces: &'a [&'static str; P], + args: &'a [rt::Argument<'a>; A], + ) -> Arguments<'a> { + const { assert!(P >= A && P <= A + 1, "invalid args") } + Arguments { pieces, fmt: None, args } + } + + /// Specifies nonstandard formatting parameters. + /// + /// An `rt::UnsafeArg` is required because the following invariants must be held + /// in order for this function to be safe: + /// 1. The `pieces` slice must be at least as long as `fmt`. + /// 2. Every `rt::Placeholder::position` value within `fmt` must be a valid index of `args`. + /// 3. Every `rt::Count::Param` within `fmt` must contain a valid index of `args`. + #[inline] + pub const fn new_v1_formatted( + pieces: &'a [&'static str], + args: &'a [rt::Argument<'a>], + fmt: &'a [rt::Placeholder], + _unsafe_arg: rt::UnsafeArg, + ) -> Arguments<'a> { + Arguments { pieces, fmt: Some(fmt), args } + } +} From 36c6633b0fb422e35f78de6fb9f0df77d1f4ba23 Mon Sep 17 00:00:00 2001 From: Mara Bos Date: Thu, 1 May 2025 11:53:51 +0200 Subject: [PATCH 70/90] Clean up "const" situation in format_args!(). Rather than marking the Argument::new_display etc. functions as non-const, this marks the Arguments::new_v1 functions as non-const. --- .../rustc_const_eval/src/check_consts/ops.rs | 2 +- compiler/rustc_span/src/symbol.rs | 2 +- library/core/src/fmt/rt.rs | 48 +++++++++++-------- tests/ui/consts/const-eval/format.stderr | 8 ++-- 4 files changed, 33 insertions(+), 27 deletions(-) diff --git a/compiler/rustc_const_eval/src/check_consts/ops.rs b/compiler/rustc_const_eval/src/check_consts/ops.rs index 7756e51c4c5f2..1e5b98675c4f0 100644 --- a/compiler/rustc_const_eval/src/check_consts/ops.rs +++ b/compiler/rustc_const_eval/src/check_consts/ops.rs @@ -352,7 +352,7 @@ fn build_error_for_const_call<'tcx>( ); err } - _ if tcx.opt_parent(callee) == tcx.get_diagnostic_item(sym::ArgumentMethods) => { + _ if tcx.opt_parent(callee) == tcx.get_diagnostic_item(sym::FmtArgumentsNew) => { ccx.dcx().create_err(errors::NonConstFmtMacroCall { span, kind: ccx.const_kind(), diff --git a/compiler/rustc_span/src/symbol.rs b/compiler/rustc_span/src/symbol.rs index ba3e6d7ca826c..7a1fb36324bf9 100644 --- a/compiler/rustc_span/src/symbol.rs +++ b/compiler/rustc_span/src/symbol.rs @@ -174,7 +174,6 @@ symbols! { Arc, ArcWeak, Argument, - ArgumentMethods, ArrayIntoIter, AsMut, AsRef, @@ -249,6 +248,7 @@ symbols! { Error, File, FileType, + FmtArgumentsNew, Fn, FnMut, FnOnce, diff --git a/library/core/src/fmt/rt.rs b/library/core/src/fmt/rt.rs index ec5015e06d2cb..c2a8a39bcac8f 100644 --- a/library/core/src/fmt/rt.rs +++ b/library/core/src/fmt/rt.rs @@ -113,46 +113,45 @@ macro_rules! argument_new { }; } -#[rustc_diagnostic_item = "ArgumentMethods"] impl Argument<'_> { #[inline] - pub fn new_display(x: &T) -> Argument<'_> { + pub const fn new_display(x: &T) -> Argument<'_> { argument_new!(T, x, ::fmt) } #[inline] - pub fn new_debug(x: &T) -> Argument<'_> { + pub const fn new_debug(x: &T) -> Argument<'_> { argument_new!(T, x, ::fmt) } #[inline] - pub fn new_debug_noop(x: &T) -> Argument<'_> { + pub const fn new_debug_noop(x: &T) -> Argument<'_> { argument_new!(T, x, |_: &T, _| Ok(())) } #[inline] - pub fn new_octal(x: &T) -> Argument<'_> { + pub const fn new_octal(x: &T) -> Argument<'_> { argument_new!(T, x, ::fmt) } #[inline] - pub fn new_lower_hex(x: &T) -> Argument<'_> { + pub const fn new_lower_hex(x: &T) -> Argument<'_> { argument_new!(T, x, ::fmt) } #[inline] - pub fn new_upper_hex(x: &T) -> Argument<'_> { + pub const fn new_upper_hex(x: &T) -> Argument<'_> { argument_new!(T, x, ::fmt) } #[inline] - pub fn new_pointer(x: &T) -> Argument<'_> { + pub const fn new_pointer(x: &T) -> Argument<'_> { argument_new!(T, x, ::fmt) } #[inline] - pub fn new_binary(x: &T) -> Argument<'_> { + pub const fn new_binary(x: &T) -> Argument<'_> { argument_new!(T, x, ::fmt) } #[inline] - pub fn new_lower_exp(x: &T) -> Argument<'_> { + pub const fn new_lower_exp(x: &T) -> Argument<'_> { argument_new!(T, x, ::fmt) } #[inline] - pub fn new_upper_exp(x: &T) -> Argument<'_> { + pub const fn new_upper_exp(x: &T) -> Argument<'_> { argument_new!(T, x, ::fmt) } #[inline] @@ -203,15 +202,8 @@ impl Argument<'_> { /// let f = format_args!("{}", "a"); /// println!("{f}"); /// ``` - /// - /// This function should _not_ be const, to make sure we don't accept - /// format_args!() and panic!() with arguments in const, even when not evaluated: - /// - /// ```compile_fail,E0015 - /// const _: () = if false { panic!("a {}", "a") }; - /// ``` #[inline] - pub fn none() -> [Self; 0] { + pub const fn none() -> [Self; 0] { [] } } @@ -246,8 +238,15 @@ impl<'a> Arguments<'a> { /// When using the format_args!() macro, this function is used to generate the /// Arguments structure. + /// + /// This function should _not_ be const, to make sure we don't accept + /// format_args!() and panic!() with arguments in const, even when not evaluated: + /// + /// ```compile_fail,E0015 + /// const _: () = if false { panic!("a {}", "a") }; + /// ``` #[inline] - pub const fn new_v1( + pub fn new_v1( pieces: &'a [&'static str; P], args: &'a [rt::Argument<'a>; A], ) -> Arguments<'a> { @@ -262,8 +261,15 @@ impl<'a> Arguments<'a> { /// 1. The `pieces` slice must be at least as long as `fmt`. /// 2. Every `rt::Placeholder::position` value within `fmt` must be a valid index of `args`. /// 3. Every `rt::Count::Param` within `fmt` must contain a valid index of `args`. + /// + /// This function should _not_ be const, to make sure we don't accept + /// format_args!() and panic!() with arguments in const, even when not evaluated: + /// + /// ```compile_fail,E0015 + /// const _: () = if false { panic!("a {:1}", "a") }; + /// ``` #[inline] - pub const fn new_v1_formatted( + pub fn new_v1_formatted( pieces: &'a [&'static str], args: &'a [rt::Argument<'a>], fmt: &'a [rt::Placeholder], diff --git a/tests/ui/consts/const-eval/format.stderr b/tests/ui/consts/const-eval/format.stderr index 4c4cbb372a7fd..2f202705b7f96 100644 --- a/tests/ui/consts/const-eval/format.stderr +++ b/tests/ui/consts/const-eval/format.stderr @@ -1,16 +1,16 @@ error[E0015]: cannot call non-const formatting macro in constant functions - --> $DIR/format.rs:2:13 + --> $DIR/format.rs:2:5 | LL | panic!("{:?}", 0); - | ^^^^ + | ^^^^^^^^^^^^^^^^^ | = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants error[E0015]: cannot call non-const formatting macro in constant functions - --> $DIR/format.rs:7:15 + --> $DIR/format.rs:7:5 | LL | println!("{:?}", 0); - | ^^^^ + | ^^^^^^^^^^^^^^^^^^^ | = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) From 714ea10ea41e97310a1b3d90fed4cfb3e2dd6b73 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Le=C3=B3n=20Orell=20Valerian=20Liehr?= Date: Tue, 29 Apr 2025 02:11:41 +0200 Subject: [PATCH 71/90] rustdoc: Fix doctest heuristic for main fn wrapping --- src/librustdoc/doctest/make.rs | 65 ++++++++----------- tests/rustdoc-ui/doctest/auxiliary/items.rs | 1 + .../doctest/auxiliary/macro-after-main.rs | 1 - tests/rustdoc-ui/doctest/macro-after-main.rs | 16 ----- .../doctest/macro-after-main.stdout | 6 -- .../main-alongside-macro-calls.fail.stdout | 60 +++++++++++++++++ .../main-alongside-macro-calls.pass.stdout | 9 +++ .../doctest/main-alongside-macro-calls.rs | 44 +++++++++++++ .../doctest/main-alongside-stmts.rs | 33 ++++++++++ .../doctest/main-alongside-stmts.stdout | 7 ++ .../doctest/test-main-alongside-exprs.rs | 22 ------- .../doctest/test-main-alongside-exprs.stdout | 6 -- 12 files changed, 182 insertions(+), 88 deletions(-) create mode 100644 tests/rustdoc-ui/doctest/auxiliary/items.rs delete mode 100644 tests/rustdoc-ui/doctest/auxiliary/macro-after-main.rs delete mode 100644 tests/rustdoc-ui/doctest/macro-after-main.rs delete mode 100644 tests/rustdoc-ui/doctest/macro-after-main.stdout create mode 100644 tests/rustdoc-ui/doctest/main-alongside-macro-calls.fail.stdout create mode 100644 tests/rustdoc-ui/doctest/main-alongside-macro-calls.pass.stdout create mode 100644 tests/rustdoc-ui/doctest/main-alongside-macro-calls.rs create mode 100644 tests/rustdoc-ui/doctest/main-alongside-stmts.rs create mode 100644 tests/rustdoc-ui/doctest/main-alongside-stmts.stdout delete mode 100644 tests/rustdoc-ui/doctest/test-main-alongside-exprs.rs delete mode 100644 tests/rustdoc-ui/doctest/test-main-alongside-exprs.stdout diff --git a/src/librustdoc/doctest/make.rs b/src/librustdoc/doctest/make.rs index 4194abc8d5742..d4fbfb12582e7 100644 --- a/src/librustdoc/doctest/make.rs +++ b/src/librustdoc/doctest/make.rs @@ -301,8 +301,6 @@ fn parse_source(source: &str, crate_name: &Option<&str>) -> Result) -> Result) -> Result) -> bool { let mut is_extern_crate = false; if !info.has_global_allocator @@ -351,8 +347,6 @@ fn parse_source(source: &str, crate_name: &Option<&str>) -> Result { - // We only push if it's the top item because otherwise, we would duplicate - // its content since the top-level item was already added. if fn_item.ident.name == sym::main { info.has_main_fn = true; } @@ -412,44 +406,41 @@ fn parse_source(source: &str, crate_name: &Option<&str>) -> Result { - is_extern_crate = check_item(&item, &mut info, crate_name); - } - StmtKind::Expr(ref expr) => { - if matches!(expr.kind, ast::ExprKind::Err(_)) { - reset_error_count(&psess); - return Err(()); - } - has_non_items = true; + is_extern_crate = check_item(item, &mut info, crate_name); } // We assume that the macro calls will expand to item(s) even though they could - // expand to statements and expressions. And the simple fact that we're trying - // to retrieve a `main` function inside it is a terrible idea. + // expand to statements and expressions. StmtKind::MacCall(ref mac_call) => { - if info.has_main_fn { - continue; - } - let mut iter = mac_call.mac.args.tokens.iter(); - - while let Some(token) = iter.next() { - if let TokenTree::Token(token, _) = token - && let TokenKind::Ident(name, _) = token.kind - && name == kw::Fn - && let Some(TokenTree::Token(fn_token, _)) = iter.peek() - && let TokenKind::Ident(fn_name, _) = fn_token.kind - && fn_name == sym::main - && let Some(TokenTree::Delimited(_, _, Delimiter::Parenthesis, _)) = { - iter.next(); - iter.peek() + if !info.has_main_fn { + // For backward compatibility, we look for the token sequence `fn main(…)` + // in the macro input (!) to crudely detect main functions "masked by a + // wrapper macro". For the record, this is a horrible heuristic! + // See . + let mut iter = mac_call.mac.args.tokens.iter(); + while let Some(token) = iter.next() { + if let TokenTree::Token(token, _) = token + && let TokenKind::Ident(kw::Fn, _) = token.kind + && let Some(TokenTree::Token(ident, _)) = iter.peek() + && let TokenKind::Ident(sym::main, _) = ident.kind + && let Some(TokenTree::Delimited(.., Delimiter::Parenthesis, _)) = { + iter.next(); + iter.peek() + } + { + info.has_main_fn = true; + break; } - { - info.has_main_fn = true; - break; } } } - _ => { + StmtKind::Expr(ref expr) => { + if matches!(expr.kind, ast::ExprKind::Err(_)) { + reset_error_count(&psess); + return Err(()); + } has_non_items = true; } + StmtKind::Let(_) | StmtKind::Semi(_) | StmtKind::Empty => has_non_items = true, } // Weirdly enough, the `Stmt` span doesn't include its attributes, so we need to diff --git a/tests/rustdoc-ui/doctest/auxiliary/items.rs b/tests/rustdoc-ui/doctest/auxiliary/items.rs new file mode 100644 index 0000000000000..40d4eb261e5a0 --- /dev/null +++ b/tests/rustdoc-ui/doctest/auxiliary/items.rs @@ -0,0 +1 @@ +fn item() {} diff --git a/tests/rustdoc-ui/doctest/auxiliary/macro-after-main.rs b/tests/rustdoc-ui/doctest/auxiliary/macro-after-main.rs deleted file mode 100644 index ed7584b742533..0000000000000 --- a/tests/rustdoc-ui/doctest/auxiliary/macro-after-main.rs +++ /dev/null @@ -1 +0,0 @@ -use std::string::String; diff --git a/tests/rustdoc-ui/doctest/macro-after-main.rs b/tests/rustdoc-ui/doctest/macro-after-main.rs deleted file mode 100644 index 0a42343f1c272..0000000000000 --- a/tests/rustdoc-ui/doctest/macro-after-main.rs +++ /dev/null @@ -1,16 +0,0 @@ -// This test checks a corner case where the macro calls used to be skipped, -// making them considered as statement, and therefore some cases where -// `include!` macro was then put into a function body, making the doctest -// compilation fail. - -//@ compile-flags:--test -//@ normalize-stdout: "tests/rustdoc-ui/doctest" -> "$$DIR" -//@ normalize-stdout: "finished in \d+\.\d+s" -> "finished in $$TIME" -//@ check-pass - -//! ``` -//! include!("./auxiliary/macro-after-main.rs"); -//! -//! fn main() {} -//! eprintln!(); -//! ``` diff --git a/tests/rustdoc-ui/doctest/macro-after-main.stdout b/tests/rustdoc-ui/doctest/macro-after-main.stdout deleted file mode 100644 index 72ffe2b5a27c5..0000000000000 --- a/tests/rustdoc-ui/doctest/macro-after-main.stdout +++ /dev/null @@ -1,6 +0,0 @@ - -running 1 test -test $DIR/macro-after-main.rs - (line 11) ... ok - -test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in $TIME - diff --git a/tests/rustdoc-ui/doctest/main-alongside-macro-calls.fail.stdout b/tests/rustdoc-ui/doctest/main-alongside-macro-calls.fail.stdout new file mode 100644 index 0000000000000..65989a8ef47c7 --- /dev/null +++ b/tests/rustdoc-ui/doctest/main-alongside-macro-calls.fail.stdout @@ -0,0 +1,60 @@ + +running 4 tests +test $DIR/main-alongside-macro-calls.rs - (line 19) ... ok +test $DIR/main-alongside-macro-calls.rs - (line 24) ... ok +test $DIR/main-alongside-macro-calls.rs - (line 28) ... FAILED +test $DIR/main-alongside-macro-calls.rs - (line 33) ... FAILED + +failures: + +---- $DIR/main-alongside-macro-calls.rs - (line 28) stdout ---- +error: macros that expand to items must be delimited with braces or followed by a semicolon + --> $DIR/main-alongside-macro-calls.rs:30:1 + | +LL | println!(); + | ^^^^^^^^^^ + | + = note: this error originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) + +error: macro expansion ignores `{` and any tokens following + --> $SRC_DIR/std/src/macros.rs:LL:COL + | + ::: $DIR/main-alongside-macro-calls.rs:30:1 + | +LL | println!(); + | ---------- caused by the macro expansion here + | + = note: the usage of `print!` is likely invalid in item context + +error: aborting due to 2 previous errors + +Couldn't compile the test. +---- $DIR/main-alongside-macro-calls.rs - (line 33) stdout ---- +error: macros that expand to items must be delimited with braces or followed by a semicolon + --> $DIR/main-alongside-macro-calls.rs:34:1 + | +LL | println!(); + | ^^^^^^^^^^ + | + = note: this error originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) + +error: macro expansion ignores `{` and any tokens following + --> $SRC_DIR/std/src/macros.rs:LL:COL + | + ::: $DIR/main-alongside-macro-calls.rs:34:1 + | +LL | println!(); + | ---------- caused by the macro expansion here + | + = note: the usage of `print!` is likely invalid in item context + +error: aborting due to 2 previous errors + +Couldn't compile the test. + +failures: + $DIR/main-alongside-macro-calls.rs - (line 28) + $DIR/main-alongside-macro-calls.rs - (line 33) + +test result: FAILED. 2 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in $TIME + diff --git a/tests/rustdoc-ui/doctest/main-alongside-macro-calls.pass.stdout b/tests/rustdoc-ui/doctest/main-alongside-macro-calls.pass.stdout new file mode 100644 index 0000000000000..93a4bbd87368d --- /dev/null +++ b/tests/rustdoc-ui/doctest/main-alongside-macro-calls.pass.stdout @@ -0,0 +1,9 @@ + +running 4 tests +test $DIR/main-alongside-macro-calls.rs - (line 19) ... ok +test $DIR/main-alongside-macro-calls.rs - (line 24) ... ok +test $DIR/main-alongside-macro-calls.rs - (line 28) - compile fail ... ok +test $DIR/main-alongside-macro-calls.rs - (line 33) - compile fail ... ok + +test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in $TIME + diff --git a/tests/rustdoc-ui/doctest/main-alongside-macro-calls.rs b/tests/rustdoc-ui/doctest/main-alongside-macro-calls.rs new file mode 100644 index 0000000000000..b455d8b0cc356 --- /dev/null +++ b/tests/rustdoc-ui/doctest/main-alongside-macro-calls.rs @@ -0,0 +1,44 @@ +// This test ensures that if there is are any macro calls alongside a `main` function, +// it will indeed consider the `main` function as the program entry point and *won't* +// generate its own `main` function to wrap everything even though macro calls are +// valid in statement contexts, too, and could just as well expand to statements or +// expressions (we don't perform any macro expansion to find `main`, see also +// ). +// +// See <./main-alongside-stmts.rs> for comparison. +// +//@ compile-flags:--test --test-args --test-threads=1 +//@ normalize-stdout: "tests/rustdoc-ui/doctest" -> "$$DIR" +//@ normalize-stdout: "finished in \d+\.\d+s" -> "finished in $$TIME" +//@ revisions: pass fail +//@[pass] check-pass +//@[fail] failure-status: 101 + +// Regression test for : + +//! ``` +//! fn main() {} +//! include!("./auxiliary/items.rs"); +//! ``` +//! +//! ``` +//! include!("./auxiliary/items.rs"); +//! fn main() {} +//! ``` + +// Regression test for : +// We test the "same" thing twice: Once via `compile_fail` to more closely mirror the reported +// regression and once without it to make sure that it leads to the expected rustc errors, +// namely `println!(…)` not being valid in item contexts. + +#![cfg_attr(pass, doc = " ```compile_fail")] +#![cfg_attr(fail, doc = " ```")] +//! fn main() {} +//! println!(); +//! ``` +//! +#![cfg_attr(pass, doc = " ```compile_fail")] +#![cfg_attr(fail, doc = " ```")] +//! println!(); +//! fn main() {} +//! ``` diff --git a/tests/rustdoc-ui/doctest/main-alongside-stmts.rs b/tests/rustdoc-ui/doctest/main-alongside-stmts.rs new file mode 100644 index 0000000000000..5965f928cdd13 --- /dev/null +++ b/tests/rustdoc-ui/doctest/main-alongside-stmts.rs @@ -0,0 +1,33 @@ +// This test ensures that if there is are any statements alongside a `main` function, +// it will not consider the `main` function as the program entry point but instead +// will generate its own `main` function to wrap everything as it needs to reside in a +// module where only *items* are permitted syntactically. +// +// See <./main-alongside-macro-calls.rs> for comparison. +// +// This is a regression test for: +// * +// * +// +//@ compile-flags:--test --test-args --test-threads=1 +//@ normalize-stdout: "tests/rustdoc-ui/doctest" -> "$$DIR" +//@ normalize-stdout: "finished in \d+\.\d+s" -> "finished in $$TIME" +//@ check-pass + +//! ``` +//! # if cfg!(miri) { return; } +//! use std::ops::Deref; +//! +//! fn main() { +//! assert!(false); +//! } +//! ``` +//! +//! ``` +//! let x = 2; +//! assert_eq!(x, 2); +//! +//! fn main() { +//! assert!(false); +//! } +//! ``` diff --git a/tests/rustdoc-ui/doctest/main-alongside-stmts.stdout b/tests/rustdoc-ui/doctest/main-alongside-stmts.stdout new file mode 100644 index 0000000000000..9b9a3fe8a68f7 --- /dev/null +++ b/tests/rustdoc-ui/doctest/main-alongside-stmts.stdout @@ -0,0 +1,7 @@ + +running 2 tests +test $DIR/main-alongside-stmts.rs - (line 17) ... ok +test $DIR/main-alongside-stmts.rs - (line 26) ... ok + +test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in $TIME + diff --git a/tests/rustdoc-ui/doctest/test-main-alongside-exprs.rs b/tests/rustdoc-ui/doctest/test-main-alongside-exprs.rs deleted file mode 100644 index ee2299c0fd87e..0000000000000 --- a/tests/rustdoc-ui/doctest/test-main-alongside-exprs.rs +++ /dev/null @@ -1,22 +0,0 @@ -// This test ensures that if there is an expression alongside a `main` -// function, it will not consider the entire code to be part of the `main` -// function and will generate its own function to wrap everything. -// -// This is a regression test for: -// * -// * -//@ compile-flags:--test -//@ normalize-stdout: "tests/rustdoc-ui/doctest" -> "$$DIR" -//@ normalize-stdout: "finished in \d+\.\d+s" -> "finished in $$TIME" -//@ check-pass - -#![crate_name = "foo"] - -//! ``` -//! # if cfg!(miri) { return; } -//! use std::ops::Deref; -//! -//! fn main() { -//! println!("Hi!"); -//! } -//! ``` diff --git a/tests/rustdoc-ui/doctest/test-main-alongside-exprs.stdout b/tests/rustdoc-ui/doctest/test-main-alongside-exprs.stdout deleted file mode 100644 index 90d7c3546bf10..0000000000000 --- a/tests/rustdoc-ui/doctest/test-main-alongside-exprs.stdout +++ /dev/null @@ -1,6 +0,0 @@ - -running 1 test -test $DIR/test-main-alongside-exprs.rs - (line 15) ... ok - -test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in $TIME - From ce50b4fd9d3b75976520486e4ff6888c22ba89d7 Mon Sep 17 00:00:00 2001 From: Mara Bos Date: Thu, 1 May 2025 12:29:43 +0200 Subject: [PATCH 72/90] Bless mir opt tests. --- .../sroa/lifetimes.foo.ScalarReplacementOfAggregates.diff | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/mir-opt/sroa/lifetimes.foo.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa/lifetimes.foo.ScalarReplacementOfAggregates.diff index a1df868cde051..33f1ad9bef4ef 100644 --- a/tests/mir-opt/sroa/lifetimes.foo.ScalarReplacementOfAggregates.diff +++ b/tests/mir-opt/sroa/lifetimes.foo.ScalarReplacementOfAggregates.diff @@ -121,7 +121,7 @@ StorageDead(_18); _16 = &_17; _15 = &(*_16); - _11 = Arguments::<'_>::new_v1::<3, 2>(move _12, move _15) -> [return: bb5, unwind unreachable]; + _11 = core::fmt::rt::>::new_v1::<3, 2>(move _12, move _15) -> [return: bb5, unwind unreachable]; } bb5: { From 86c6e7911d2ccf69f8306f5bfb10233025dc8e22 Mon Sep 17 00:00:00 2001 From: Mara Bos Date: Thu, 1 May 2025 12:31:44 +0200 Subject: [PATCH 73/90] Bless pretty tests. --- tests/pretty/issue-4264.pp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/pretty/issue-4264.pp b/tests/pretty/issue-4264.pp index 3cff6ca33dab9..eb808f7122a9d 100644 --- a/tests/pretty/issue-4264.pp +++ b/tests/pretty/issue-4264.pp @@ -34,7 +34,7 @@ ((::alloc::fmt::format as for<'a> fn(Arguments<'a>) -> String {format})(((format_arguments::new_const as - fn(&[&'static str; 1]) -> Arguments<'_> {Arguments::<'_>::new_const::<1>})((&([("test" + fn(&[&'static str; 1]) -> Arguments<'_> {core::fmt::rt::>::new_const::<1>})((&([("test" as &str)] as [&str; 1]) as &[&str; 1])) as Arguments<'_>)) as String) } as String)) as String); From 60218be5e997a9d6ced4857cc13cd9441d5c3e40 Mon Sep 17 00:00:00 2001 From: Christian Legnitto Date: Thu, 1 May 2025 07:40:43 -0400 Subject: [PATCH 74/90] Remove backtrace dep from anyhow in features status dump tool According to `anyhow`'s Cargo.toml: > On compilers older than 1.65, features=["backtrace"] may be used to enable > backtraces via the `backtrace` crate. This feature has no effect on 1.65+ > besides bringing in an unused dependency, as `std::backtrace` is always > preferred. So this is just bringing in an unused dependency. --- Cargo.lock | 3 --- src/tools/features-status-dump/Cargo.toml | 2 +- 2 files changed, 1 insertion(+), 4 deletions(-) diff --git a/Cargo.lock b/Cargo.lock index 60daa453c60dd..b06119bc09203 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -161,9 +161,6 @@ name = "anyhow" version = "1.0.97" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "dcfed56ad506cb2c684a14971b8861fdc3baaaae314b9e5f9bb532cbe3ba7a4f" -dependencies = [ - "backtrace", -] [[package]] name = "ar_archive_writer" diff --git a/src/tools/features-status-dump/Cargo.toml b/src/tools/features-status-dump/Cargo.toml index 35be71a46e551..b2976f14a01a4 100644 --- a/src/tools/features-status-dump/Cargo.toml +++ b/src/tools/features-status-dump/Cargo.toml @@ -5,7 +5,7 @@ license = "MIT OR Apache-2.0" edition = "2021" [dependencies] -anyhow = { version = "1", features = ["backtrace"] } +anyhow = { version = "1" } clap = { version = "4", features = ["derive"] } serde = { version = "1.0.125", features = [ "derive" ] } serde_json = "1.0.59" From bfe3d54d817cd66e4ab85d94409db8a572fdadd7 Mon Sep 17 00:00:00 2001 From: Boxy Date: Thu, 1 May 2025 13:11:53 +0100 Subject: [PATCH 75/90] User type annotations for free consts in pattern position --- compiler/rustc_mir_build/src/thir/pattern/mod.rs | 3 +-- .../user_type_annotations_pattern.rs | 14 ++++++++++++++ .../user_type_annotations_pattern.stderr | 11 +++++++++++ 3 files changed, 26 insertions(+), 2 deletions(-) create mode 100644 tests/ui/generic-const-items/user_type_annotations_pattern.rs create mode 100644 tests/ui/generic-const-items/user_type_annotations_pattern.stderr diff --git a/compiler/rustc_mir_build/src/thir/pattern/mod.rs b/compiler/rustc_mir_build/src/thir/pattern/mod.rs index 8e69ff568b928..4f00a85004d0c 100644 --- a/compiler/rustc_mir_build/src/thir/pattern/mod.rs +++ b/compiler/rustc_mir_build/src/thir/pattern/mod.rs @@ -553,8 +553,7 @@ impl<'a, 'tcx> PatCtxt<'a, 'tcx> { let res = self.typeck_results.qpath_res(qpath, id); let (def_id, user_ty) = match res { - Res::Def(DefKind::Const, def_id) => (def_id, None), - Res::Def(DefKind::AssocConst, def_id) => { + Res::Def(DefKind::Const, def_id) | Res::Def(DefKind::AssocConst, def_id) => { (def_id, self.typeck_results.user_provided_types().get(id)) } diff --git a/tests/ui/generic-const-items/user_type_annotations_pattern.rs b/tests/ui/generic-const-items/user_type_annotations_pattern.rs new file mode 100644 index 0000000000000..aa3846df2bca2 --- /dev/null +++ b/tests/ui/generic-const-items/user_type_annotations_pattern.rs @@ -0,0 +1,14 @@ +#![feature(generic_const_items)] +#![expect(incomplete_features)] + +const FOO<'a: 'static>: usize = 10; + +fn bar<'a>() { + match 10_usize { + FOO::<'a> => todo!(), + //~^ ERROR: lifetime may not live long enough + _ => todo!(), + } +} + +fn main() {} diff --git a/tests/ui/generic-const-items/user_type_annotations_pattern.stderr b/tests/ui/generic-const-items/user_type_annotations_pattern.stderr new file mode 100644 index 0000000000000..e15be275d2976 --- /dev/null +++ b/tests/ui/generic-const-items/user_type_annotations_pattern.stderr @@ -0,0 +1,11 @@ +error: lifetime may not live long enough + --> $DIR/user_type_annotations_pattern.rs:8:9 + | +LL | fn bar<'a>() { + | -- lifetime `'a` defined here +LL | match 10_usize { +LL | FOO::<'a> => todo!(), + | ^^^^^^^^^ requires that `'a` must outlive `'static` + +error: aborting due to 1 previous error + From 72b110ada38d0ebf9faf2538b9069f3b878e5625 Mon Sep 17 00:00:00 2001 From: Amanieu d'Antras Date: Thu, 1 May 2025 13:48:11 +0100 Subject: [PATCH 76/90] Stabilize `select_unpredictable` FCP completed in tracking issue #133962. --- library/core/src/hint.rs | 4 +--- library/coretests/tests/lib.rs | 1 - tests/codegen/intrinsics/select_unpredictable.rs | 1 - 3 files changed, 1 insertion(+), 5 deletions(-) diff --git a/library/core/src/hint.rs b/library/core/src/hint.rs index 1ca23ab6eea66..394a3ea677833 100644 --- a/library/core/src/hint.rs +++ b/library/core/src/hint.rs @@ -763,8 +763,6 @@ pub const fn cold_path() { /// /// Distribute values evenly between two buckets: /// ``` -/// #![feature(select_unpredictable)] -/// /// use std::hash::BuildHasher; /// use std::hint; /// @@ -780,7 +778,7 @@ pub const fn cold_path() { /// # assert_eq!(bucket_one.len() + bucket_two.len(), 1); /// ``` #[inline(always)] -#[unstable(feature = "select_unpredictable", issue = "133962")] +#[stable(feature = "select_unpredictable", since = "CURRENT_RUSTC_VERSION")] pub fn select_unpredictable(condition: bool, true_val: T, false_val: T) -> T { // FIXME(https://github.com/rust-lang/unsafe-code-guidelines/issues/245): // Change this to use ManuallyDrop instead. diff --git a/library/coretests/tests/lib.rs b/library/coretests/tests/lib.rs index ef548971aafa1..f52e338a0850a 100644 --- a/library/coretests/tests/lib.rs +++ b/library/coretests/tests/lib.rs @@ -68,7 +68,6 @@ #![feature(pointer_is_aligned_to)] #![feature(portable_simd)] #![feature(ptr_metadata)] -#![feature(select_unpredictable)] #![feature(slice_from_ptr_range)] #![feature(slice_internals)] #![feature(slice_partition_dedup)] diff --git a/tests/codegen/intrinsics/select_unpredictable.rs b/tests/codegen/intrinsics/select_unpredictable.rs index 2db4ae174b333..ad7120c6fb8bc 100644 --- a/tests/codegen/intrinsics/select_unpredictable.rs +++ b/tests/codegen/intrinsics/select_unpredictable.rs @@ -1,7 +1,6 @@ //@ compile-flags: -Copt-level=3 -Zmerge-functions=disabled #![feature(core_intrinsics)] -#![feature(select_unpredictable)] #![crate_type = "lib"] /* Test the intrinsic */ From 53e3907bcb5a4519a6558051476c3198aba2a12c Mon Sep 17 00:00:00 2001 From: Boxy Date: Thu, 1 May 2025 14:29:10 +0100 Subject: [PATCH 77/90] No-op split into sub functions --- .../src/traits/normalize.rs | 326 +++++++++--------- 1 file changed, 162 insertions(+), 164 deletions(-) diff --git a/compiler/rustc_trait_selection/src/traits/normalize.rs b/compiler/rustc_trait_selection/src/traits/normalize.rs index 5f0acd46f86ae..e08428f925c97 100644 --- a/compiler/rustc_trait_selection/src/traits/normalize.rs +++ b/compiler/rustc_trait_selection/src/traits/normalize.rs @@ -10,8 +10,8 @@ use rustc_macros::extension; use rustc_middle::span_bug; use rustc_middle::traits::{ObligationCause, ObligationCauseCode}; use rustc_middle::ty::{ - self, Ty, TyCtxt, TypeFoldable, TypeFolder, TypeSuperFoldable, TypeVisitable, TypeVisitableExt, - TypingMode, + self, AliasTy, Ty, TyCtxt, TypeFoldable, TypeFolder, TypeSuperFoldable, TypeVisitable, + TypeVisitableExt, TypingMode, }; use tracing::{debug, instrument}; @@ -178,6 +178,163 @@ impl<'a, 'b, 'tcx> AssocTypeNormalizer<'a, 'b, 'tcx> { if !needs_normalization(self.selcx.infcx, &value) { value } else { value.fold_with(self) } } + + fn normalize_trait_projection(&mut self, data: AliasTy<'tcx>) -> Ty<'tcx> { + if !data.has_escaping_bound_vars() { + // When we don't have escaping bound vars we can normalize ambig aliases + // to inference variables (done in `normalize_projection_ty`). This would + // be wrong if there were escaping bound vars as even if we instantiated + // the bound vars with placeholders, we wouldn't be able to map them back + // after normalization succeeded. + // + // Also, as an optimization: when we don't have escaping bound vars, we don't + // need to replace them with placeholders (see branch below). + let data = data.fold_with(self); + let normalized_ty = project::normalize_projection_ty( + self.selcx, + self.param_env, + data, + self.cause.clone(), + self.depth, + self.obligations, + ); + debug!( + ?self.depth, + ?ty, + ?normalized_ty, + obligations.len = ?self.obligations.len(), + "AssocTypeNormalizer: normalized type" + ); + normalized_ty.expect_type() + } else { + // If there are escaping bound vars, we temporarily replace the + // bound vars with placeholders. Note though, that in the case + // that we still can't project for whatever reason (e.g. self + // type isn't known enough), we *can't* register an obligation + // and return an inference variable (since then that obligation + // would have bound vars and that's a can of worms). Instead, + // we just give up and fall back to pretending like we never tried! + // + // Note: this isn't necessarily the final approach here; we may + // want to figure out how to register obligations with escaping vars + // or handle this some other way. + + let infcx = self.selcx.infcx; + let (data, mapped_regions, mapped_types, mapped_consts) = + BoundVarReplacer::replace_bound_vars(infcx, &mut self.universes, data); + let data = data.fold_with(self); + let normalized_ty = project::opt_normalize_projection_term( + self.selcx, + self.param_env, + data.into(), + self.cause.clone(), + self.depth, + self.obligations, + ) + .ok() + .flatten() + .map(|term| term.expect_type()) + .map(|normalized_ty| { + PlaceholderReplacer::replace_placeholders( + infcx, + mapped_regions, + mapped_types, + mapped_consts, + &self.universes, + normalized_ty, + ) + }) + .unwrap_or_else(|| ty.super_fold_with(self)); + + debug!( + ?self.depth, + ?ty, + ?normalized_ty, + obligations.len = ?self.obligations.len(), + "AssocTypeNormalizer: normalized type" + ); + normalized_ty + } + } + + fn normalize_inherent_projection(&mut self, data: AliasTy<'tcx>) -> Ty<'tcx> { + if !data.has_escaping_bound_vars() { + // This branch is *mostly* just an optimization: when we don't + // have escaping bound vars, we don't need to replace them with + // placeholders (see branch below). *Also*, we know that we can + // register an obligation to *later* project, since we know + // there won't be bound vars there. + + let data = data.fold_with(self); + + project::normalize_inherent_projection( + self.selcx, + self.param_env, + data, + self.cause.clone(), + self.depth, + self.obligations, + ) + } else { + let infcx = self.selcx.infcx; + let (data, mapped_regions, mapped_types, mapped_consts) = + BoundVarReplacer::replace_bound_vars(infcx, &mut self.universes, data); + let data = data.fold_with(self); + let ty = project::normalize_inherent_projection( + self.selcx, + self.param_env, + data, + self.cause.clone(), + self.depth, + self.obligations, + ); + + PlaceholderReplacer::replace_placeholders( + infcx, + mapped_regions, + mapped_types, + mapped_consts, + &self.universes, + ty, + ) + } + } + + fn normalize_free_alias(&mut self, data: AliasTy<'tcx>) -> Ty<'tcx> { + let recursion_limit = self.cx().recursion_limit(); + if !recursion_limit.value_within_limit(self.depth) { + self.selcx.infcx.err_ctxt().report_overflow_error( + OverflowCause::DeeplyNormalize(data.into()), + self.cause.span, + false, + |diag| { + diag.note(crate::fluent_generated::trait_selection_ty_alias_overflow); + }, + ); + } + + let infcx = self.selcx.infcx; + self.obligations.extend( + infcx.tcx.predicates_of(data.def_id).instantiate_own(infcx.tcx, data.args).map( + |(mut predicate, span)| { + if data.has_escaping_bound_vars() { + (predicate, ..) = BoundVarReplacer::replace_bound_vars( + infcx, + &mut self.universes, + predicate, + ); + } + let mut cause = self.cause.clone(); + cause.map_code(|code| ObligationCauseCode::TypeAlias(code, span, data.def_id)); + Obligation::new(infcx.tcx, cause, self.param_env, predicate) + }, + ), + ); + self.depth += 1; + let res = infcx.tcx.type_of(data.def_id).instantiate(infcx.tcx, data.args).fold_with(self); + self.depth -= 1; + res + } } impl<'a, 'b, 'tcx> TypeFolder> for AssocTypeNormalizer<'a, 'b, 'tcx> { @@ -258,168 +415,9 @@ impl<'a, 'b, 'tcx> TypeFolder> for AssocTypeNormalizer<'a, 'b, 'tcx } } } - - ty::Projection if !data.has_escaping_bound_vars() => { - // When we don't have escaping bound vars we can normalize ambig aliases - // to inference variables (done in `normalize_projection_ty`). This would - // be wrong if there were escaping bound vars as even if we instantiated - // the bound vars with placeholders, we wouldn't be able to map them back - // after normalization succeeded. - // - // Also, as an optimization: when we don't have escaping bound vars, we don't - // need to replace them with placeholders (see branch below). - let data = data.fold_with(self); - let normalized_ty = project::normalize_projection_ty( - self.selcx, - self.param_env, - data, - self.cause.clone(), - self.depth, - self.obligations, - ); - debug!( - ?self.depth, - ?ty, - ?normalized_ty, - obligations.len = ?self.obligations.len(), - "AssocTypeNormalizer: normalized type" - ); - normalized_ty.expect_type() - } - - ty::Projection => { - // If there are escaping bound vars, we temporarily replace the - // bound vars with placeholders. Note though, that in the case - // that we still can't project for whatever reason (e.g. self - // type isn't known enough), we *can't* register an obligation - // and return an inference variable (since then that obligation - // would have bound vars and that's a can of worms). Instead, - // we just give up and fall back to pretending like we never tried! - // - // Note: this isn't necessarily the final approach here; we may - // want to figure out how to register obligations with escaping vars - // or handle this some other way. - - let infcx = self.selcx.infcx; - let (data, mapped_regions, mapped_types, mapped_consts) = - BoundVarReplacer::replace_bound_vars(infcx, &mut self.universes, data); - let data = data.fold_with(self); - let normalized_ty = project::opt_normalize_projection_term( - self.selcx, - self.param_env, - data.into(), - self.cause.clone(), - self.depth, - self.obligations, - ) - .ok() - .flatten() - .map(|term| term.expect_type()) - .map(|normalized_ty| { - PlaceholderReplacer::replace_placeholders( - infcx, - mapped_regions, - mapped_types, - mapped_consts, - &self.universes, - normalized_ty, - ) - }) - .unwrap_or_else(|| ty.super_fold_with(self)); - - debug!( - ?self.depth, - ?ty, - ?normalized_ty, - obligations.len = ?self.obligations.len(), - "AssocTypeNormalizer: normalized type" - ); - normalized_ty - } - ty::Free => { - let recursion_limit = self.cx().recursion_limit(); - if !recursion_limit.value_within_limit(self.depth) { - self.selcx.infcx.err_ctxt().report_overflow_error( - OverflowCause::DeeplyNormalize(data.into()), - self.cause.span, - false, - |diag| { - diag.note(crate::fluent_generated::trait_selection_ty_alias_overflow); - }, - ); - } - - let infcx = self.selcx.infcx; - self.obligations.extend( - infcx.tcx.predicates_of(data.def_id).instantiate_own(infcx.tcx, data.args).map( - |(mut predicate, span)| { - if data.has_escaping_bound_vars() { - (predicate, ..) = BoundVarReplacer::replace_bound_vars( - infcx, - &mut self.universes, - predicate, - ); - } - let mut cause = self.cause.clone(); - cause.map_code(|code| { - ObligationCauseCode::TypeAlias(code, span, data.def_id) - }); - Obligation::new(infcx.tcx, cause, self.param_env, predicate) - }, - ), - ); - self.depth += 1; - let res = infcx - .tcx - .type_of(data.def_id) - .instantiate(infcx.tcx, data.args) - .fold_with(self); - self.depth -= 1; - res - } - - ty::Inherent if !data.has_escaping_bound_vars() => { - // This branch is *mostly* just an optimization: when we don't - // have escaping bound vars, we don't need to replace them with - // placeholders (see branch below). *Also*, we know that we can - // register an obligation to *later* project, since we know - // there won't be bound vars there. - - let data = data.fold_with(self); - - project::normalize_inherent_projection( - self.selcx, - self.param_env, - data, - self.cause.clone(), - self.depth, - self.obligations, - ) - } - - ty::Inherent => { - let infcx = self.selcx.infcx; - let (data, mapped_regions, mapped_types, mapped_consts) = - BoundVarReplacer::replace_bound_vars(infcx, &mut self.universes, data); - let data = data.fold_with(self); - let ty = project::normalize_inherent_projection( - self.selcx, - self.param_env, - data, - self.cause.clone(), - self.depth, - self.obligations, - ); - - PlaceholderReplacer::replace_placeholders( - infcx, - mapped_regions, - mapped_types, - mapped_consts, - &self.universes, - ty, - ) - } + ty::Projection => self.normalize_trait_projection(data), + ty::Free => self.normalize_free_alias(data), + ty::Inherent => self.normalize_inherent_projection(data), } } From 5d308148aa06f011f062488e81a10aeeb338ba35 Mon Sep 17 00:00:00 2001 From: Folkert de Vries Date: Thu, 1 May 2025 16:19:24 +0200 Subject: [PATCH 78/90] allow `#[rustc_std_internal_symbol]` in combination with `#[naked]` --- compiler/rustc_passes/src/check_attr.rs | 1 + tests/ui/asm/naked-functions.rs | 8 +++++++- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/compiler/rustc_passes/src/check_attr.rs b/compiler/rustc_passes/src/check_attr.rs index a61d446a3a93b..f04b167889f19 100644 --- a/compiler/rustc_passes/src/check_attr.rs +++ b/compiler/rustc_passes/src/check_attr.rs @@ -625,6 +625,7 @@ impl<'tcx> CheckAttrVisitor<'tcx> { sym::naked, sym::instruction_set, sym::repr, + sym::rustc_std_internal_symbol, // code generation sym::cold, // documentation diff --git a/tests/ui/asm/naked-functions.rs b/tests/ui/asm/naked-functions.rs index 1eeb716e98a1f..cb5fde9a80b81 100644 --- a/tests/ui/asm/naked-functions.rs +++ b/tests/ui/asm/naked-functions.rs @@ -2,7 +2,7 @@ //@ ignore-nvptx64 //@ ignore-spirv -#![feature(asm_unwind, linkage)] +#![feature(asm_unwind, linkage, rustc_attrs)] #![crate_type = "lib"] use std::arch::{asm, naked_asm}; @@ -225,3 +225,9 @@ pub extern "C" fn compatible_doc_attributes() { pub extern "C" fn compatible_linkage() { naked_asm!("", options(raw)); } + +#[rustc_std_internal_symbol] +#[unsafe(naked)] +pub extern "C" fn rustc_std_internal_symbol() { + naked_asm!("", options(raw)); +} From 7443d039a5bd9724165e616e5e545e947d85c018 Mon Sep 17 00:00:00 2001 From: sayantn Date: Tue, 29 Apr 2025 20:11:34 +0530 Subject: [PATCH 79/90] Update stdarch --- library/core/Cargo.toml | 1 - library/coretests/benches/ascii.rs | 2 +- library/std/Cargo.toml | 1 - library/stdarch | 2 +- library/sysroot/Cargo.toml | 1 - 5 files changed, 2 insertions(+), 5 deletions(-) diff --git a/library/core/Cargo.toml b/library/core/Cargo.toml index fe61f552a49de..99e52d0ada0a6 100644 --- a/library/core/Cargo.toml +++ b/library/core/Cargo.toml @@ -31,7 +31,6 @@ level = "warn" check-cfg = [ 'cfg(bootstrap)', 'cfg(no_fp_fmt_parse)', - 'cfg(stdarch_intel_sde)', # core use #[path] imports to portable-simd `core_simd` crate # and to stdarch `core_arch` crate which messes-up with Cargo list # of declared features, we therefor expect any feature cfg diff --git a/library/coretests/benches/ascii.rs b/library/coretests/benches/ascii.rs index 3fe45aa360bf0..64bdc7fed118f 100644 --- a/library/coretests/benches/ascii.rs +++ b/library/coretests/benches/ascii.rs @@ -354,7 +354,7 @@ static ASCII_CHARACTER_CLASS: [AsciiCharacterClass; 256] = [ ]; const ASCII_PATH: &[u8] = b"home/kyubey/rust/build/x86_64-unknown-linux-gnu/stage0/lib:/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/stage0-tools/release/deps"; -const RUST_INCANTATION: &[u8] = br#"AR_x86_64_unknown_linux_gnu="ar" CARGO_INCREMENTAL="0" CARGO_PROFILE_RELEASE_DEBUG="1" CARGO_PROFILE_RELEASE_DEBUG_ASSERTIONS="false" CARGO_PROFILE_RELEASE_OVERFLOW_CHECKS="false" CARGO_TARGET_DIR="/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/stage0-std" CC_x86_64_unknown_linux_gnu="cc" CFG_COMPILER_HOST_TRIPLE="x86_64-unknown-linux-gnu" CFG_RELEASE_CHANNEL="dev" CFLAGS_x86_64_unknown_linux_gnu="-ffunction-sections -fdata-sections -fPIC -m64" CXXFLAGS_x86_64_unknown_linux_gnu="-ffunction-sections -fdata-sections -fPIC -m64" CXX_x86_64_unknown_linux_gnu="c++" LD_LIBRARY_PATH="/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/stage0-sysroot/lib/rustlib/x86_64-unknown-linux-gnu/lib" LIBC_CHECK_CFG="1" RANLIB_x86_64_unknown_linux_gnu="ar s" REAL_LIBRARY_PATH_VAR="LD_LIBRARY_PATH" RUSTBUILD_NATIVE_DIR="/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/native" RUSTC="/home/kyubey/workspace/rust/build/bootstrap/debug/rustc" RUSTC_BOOTSTRAP="1" RUSTC_BREAK_ON_ICE="1" RUSTC_ERROR_METADATA_DST="/home/kyubey/workspace/rust/build/tmp/extended-error-metadata" RUSTC_FORCE_UNSTABLE="1" RUSTC_HOST_FUSE_LD_LLD="1" RUSTC_INSTALL_BINDIR="bin" RUSTC_LIBDIR="/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/stage0/lib" RUSTC_LINT_FLAGS="-Wrust_2018_idioms -Wunused_lifetimes -Wsemicolon_in_expressions_from_macros" RUSTC_REAL="/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/stage0/bin/rustc" RUSTC_SNAPSHOT="/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/stage0/bin/rustc" RUSTC_SNAPSHOT_LIBDIR="/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/stage0/lib" RUSTC_STAGE="0" RUSTC_SYSROOT="/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/stage0-sysroot" RUSTC_VERBOSE="0" RUSTDOC="/home/kyubey/workspace/rust/build/bootstrap/debug/rustdoc" RUSTDOCFLAGS="-C target-cpu=native --cfg=bootstrap -Csymbol-mangling-version=legacy -Zunstable-options -Zunstable-options --check-cfg=values(bootstrap) --check-cfg=values(stdarch_intel_sde) --check-cfg=values(no_fp_fmt_parse) --check-cfg=values(no_global_oom_handling) --check-cfg=values(no_rc) --check-cfg=values(no_sync) --check-cfg=values(freebsd12) --check-cfg=values(freebsd13) --check-cfg=values(backtrace_in_libstd) --check-cfg=values(target_env,\"libnx\") --check-cfg=values(target_arch,\"asmjs\",\"spirv\",\"nvptx\",\"xtensa\") -Clink-arg=-fuse-ld=lld -Clink-arg=-Wl,--threads=1 -Wrustdoc::invalid_codeblock_attributes --crate-version 1.72.0-dev -Zcrate-attr=doc(html_root_url=\"https://doc.rust-lang.org/nightly/\") -Zcrate-attr=warn(rust_2018_idioms)" RUSTDOC_FUSE_LD_LLD="1" RUSTDOC_LIBDIR="/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/stage0/lib" RUSTDOC_REAL="/path/to/nowhere/rustdoc/not/required" RUSTFLAGS="-C target-cpu=native --cfg=bootstrap -Csymbol-mangling-version=legacy -Zunstable-options -Zunstable-options --check-cfg=values(bootstrap) --check-cfg=values(stdarch_intel_sde) --check-cfg=values(no_fp_fmt_parse) --check-cfg=values(no_global_oom_handling) --check-cfg=values(no_rc) --check-cfg=values(no_sync) --check-cfg=values(freebsd12) --check-cfg=values(freebsd13) --check-cfg=values(backtrace_in_libstd) --check-cfg=values(target_env,\"libnx\") --check-cfg=values(target_arch,\"asmjs\",\"spirv\",\"nvptx\",\"xtensa\") -Zmacro-backtrace -Clink-args=-Wl,-z,origin -Clink-args=-Wl,-rpath,$ORIGIN/../lib -Clink-args=-fuse-ld=lld -Csplit-debuginfo=off -Cprefer-dynamic -Zinline-mir -Clto=off -Zcrate-attr=doc(html_root_url=\"https://doc.rust-lang.org/nightly/\")" RUST_COMPILER_RT_ROOT="/home/kyubey/workspace/rust/src/llvm-project/compiler-rt" RUST_TEST_THREADS="48" WINAPI_NO_BUNDLED_LIBRARIES="1" __CARGO_DEFAULT_LIB_METADATA="bootstrapstd" "/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "bench" "--target" "x86_64-unknown-linux-gnu" "-Zcheck-cfg=names,values,output" "-Zbinary-dep-depinfo" "-j" "48" "--features" " panic-unwind backtrace compiler-builtins-c" "--manifest-path" "/home/kyubey/workspace/rust/library/sysroot/Cargo.toml" "-p" "core" "--" "bench_ascii_escape_display" "--quiet" "-Z" "unstable-options" "--format" "json""#; +const RUST_INCANTATION: &[u8] = br#"AR_x86_64_unknown_linux_gnu="ar" CARGO_INCREMENTAL="0" CARGO_PROFILE_RELEASE_DEBUG="1" CARGO_PROFILE_RELEASE_DEBUG_ASSERTIONS="false" CARGO_PROFILE_RELEASE_OVERFLOW_CHECKS="false" CARGO_TARGET_DIR="/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/stage0-std" CC_x86_64_unknown_linux_gnu="cc" CFG_COMPILER_HOST_TRIPLE="x86_64-unknown-linux-gnu" CFG_RELEASE_CHANNEL="dev" CFLAGS_x86_64_unknown_linux_gnu="-ffunction-sections -fdata-sections -fPIC -m64" CXXFLAGS_x86_64_unknown_linux_gnu="-ffunction-sections -fdata-sections -fPIC -m64" CXX_x86_64_unknown_linux_gnu="c++" LD_LIBRARY_PATH="/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/stage0-sysroot/lib/rustlib/x86_64-unknown-linux-gnu/lib" LIBC_CHECK_CFG="1" RANLIB_x86_64_unknown_linux_gnu="ar s" REAL_LIBRARY_PATH_VAR="LD_LIBRARY_PATH" RUSTBUILD_NATIVE_DIR="/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/native" RUSTC="/home/kyubey/workspace/rust/build/bootstrap/debug/rustc" RUSTC_BOOTSTRAP="1" RUSTC_BREAK_ON_ICE="1" RUSTC_ERROR_METADATA_DST="/home/kyubey/workspace/rust/build/tmp/extended-error-metadata" RUSTC_FORCE_UNSTABLE="1" RUSTC_HOST_FUSE_LD_LLD="1" RUSTC_INSTALL_BINDIR="bin" RUSTC_LIBDIR="/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/stage0/lib" RUSTC_LINT_FLAGS="-Wrust_2018_idioms -Wunused_lifetimes -Wsemicolon_in_expressions_from_macros" RUSTC_REAL="/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/stage0/bin/rustc" RUSTC_SNAPSHOT="/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/stage0/bin/rustc" RUSTC_SNAPSHOT_LIBDIR="/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/stage0/lib" RUSTC_STAGE="0" RUSTC_SYSROOT="/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/stage0-sysroot" RUSTC_VERBOSE="0" RUSTDOC="/home/kyubey/workspace/rust/build/bootstrap/debug/rustdoc" RUSTDOCFLAGS="-C target-cpu=native --cfg=bootstrap -Csymbol-mangling-version=legacy -Zunstable-options -Zunstable-options --check-cfg=values(bootstrap) --check-cfg=values(no_fp_fmt_parse) --check-cfg=values(no_global_oom_handling) --check-cfg=values(no_rc) --check-cfg=values(no_sync) --check-cfg=values(freebsd12) --check-cfg=values(freebsd13) --check-cfg=values(backtrace_in_libstd) --check-cfg=values(target_env,\"libnx\") --check-cfg=values(target_arch,\"asmjs\",\"spirv\",\"nvptx\",\"xtensa\") -Clink-arg=-fuse-ld=lld -Clink-arg=-Wl,--threads=1 -Wrustdoc::invalid_codeblock_attributes --crate-version 1.72.0-dev -Zcrate-attr=doc(html_root_url=\"https://doc.rust-lang.org/nightly/\") -Zcrate-attr=warn(rust_2018_idioms)" RUSTDOC_FUSE_LD_LLD="1" RUSTDOC_LIBDIR="/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/stage0/lib" RUSTDOC_REAL="/path/to/nowhere/rustdoc/not/required" RUSTFLAGS="-C target-cpu=native --cfg=bootstrap -Csymbol-mangling-version=legacy -Zunstable-options -Zunstable-options --check-cfg=values(bootstrap) --check-cfg=values(no_fp_fmt_parse) --check-cfg=values(no_global_oom_handling) --check-cfg=values(no_rc) --check-cfg=values(no_sync) --check-cfg=values(freebsd12) --check-cfg=values(freebsd13) --check-cfg=values(backtrace_in_libstd) --check-cfg=values(target_env,\"libnx\") --check-cfg=values(target_arch,\"asmjs\",\"spirv\",\"nvptx\",\"xtensa\") -Zmacro-backtrace -Clink-args=-Wl,-z,origin -Clink-args=-Wl,-rpath,$ORIGIN/../lib -Clink-args=-fuse-ld=lld -Csplit-debuginfo=off -Cprefer-dynamic -Zinline-mir -Clto=off -Zcrate-attr=doc(html_root_url=\"https://doc.rust-lang.org/nightly/\")" RUST_COMPILER_RT_ROOT="/home/kyubey/workspace/rust/src/llvm-project/compiler-rt" RUST_TEST_THREADS="48" WINAPI_NO_BUNDLED_LIBRARIES="1" __CARGO_DEFAULT_LIB_METADATA="bootstrapstd" "/home/kyubey/workspace/rust/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "bench" "--target" "x86_64-unknown-linux-gnu" "-Zcheck-cfg=names,values,output" "-Zbinary-dep-depinfo" "-j" "48" "--features" " panic-unwind backtrace compiler-builtins-c" "--manifest-path" "/home/kyubey/workspace/rust/library/sysroot/Cargo.toml" "-p" "core" "--" "bench_ascii_escape_display" "--quiet" "-Z" "unstable-options" "--format" "json""#; #[bench] fn bench_ascii_escape_display_no_escape(b: &mut Bencher) { diff --git a/library/std/Cargo.toml b/library/std/Cargo.toml index 940b671c51461..d7bd28b5279d3 100644 --- a/library/std/Cargo.toml +++ b/library/std/Cargo.toml @@ -121,7 +121,6 @@ debug_typeid = ["core/debug_typeid"] # https://github.com/rust-lang/stdarch/blob/master/crates/std_detect/Cargo.toml std_detect_file_io = ["std_detect/std_detect_file_io"] std_detect_dlsym_getauxval = ["std_detect/std_detect_dlsym_getauxval"] -std_detect_env_override = ["std_detect/std_detect_env_override"] # Enable using raw-dylib for Windows imports. # This will eventually be the default. diff --git a/library/stdarch b/library/stdarch index 1245618ccf5b2..f1c1839c0deb9 160000 --- a/library/stdarch +++ b/library/stdarch @@ -1 +1 @@ -Subproject commit 1245618ccf5b2df7ab1ebb0279b9f3f726670161 +Subproject commit f1c1839c0deb985a9f98cbd6b38a6d43f2df6157 diff --git a/library/sysroot/Cargo.toml b/library/sysroot/Cargo.toml index ec6ae31507e05..c149d513c32b4 100644 --- a/library/sysroot/Cargo.toml +++ b/library/sysroot/Cargo.toml @@ -31,5 +31,4 @@ panic_immediate_abort = ["std/panic_immediate_abort"] profiler = ["dep:profiler_builtins"] std_detect_file_io = ["std/std_detect_file_io"] std_detect_dlsym_getauxval = ["std/std_detect_dlsym_getauxval"] -std_detect_env_override = ["std/std_detect_env_override"] windows_raw_dylib = ["std/windows_raw_dylib"] From c1f2ad2d16cdedd6cf82fe551fb2e8c05def36e5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Matthias=20Kr=C3=BCger?= Date: Tue, 15 Apr 2025 22:46:29 +0200 Subject: [PATCH 80/90] crashes: more tests --- tests/crashes/138156.rs | 42 +++++++++++++++++++++++++++++++++++++++++ tests/crashes/138240.rs | 9 +++++++++ tests/crashes/138265.rs | 12 ++++++++++++ tests/crashes/138266.rs | 7 +++++++ tests/crashes/138359.rs | 8 ++++++++ tests/crashes/138361.rs | 6 ++++++ tests/crashes/138510.rs | 7 +++++++ tests/crashes/138534.rs | 6 ++++++ tests/crashes/138564.rs | 26 +++++++++++++++++++++++++ tests/crashes/138707.rs | 37 ++++++++++++++++++++++++++++++++++++ tests/crashes/138738.rs | 7 +++++++ tests/crashes/139089.rs | 2 ++ tests/crashes/139120.rs | 29 ++++++++++++++++++++++++++++ tests/crashes/139381.rs | 13 +++++++++++++ tests/crashes/139387.rs | 15 +++++++++++++++ tests/crashes/139409.rs | 12 ++++++++++++ tests/crashes/139462.rs | 8 ++++++++ tests/crashes/139556.rs | 13 +++++++++++++ tests/crashes/139570.rs | 4 ++++ tests/crashes/139596.rs | 10 ++++++++++ tests/crashes/139659.rs | 29 ++++++++++++++++++++++++++++ tests/crashes/139738.rs | 3 +++ tests/crashes/139815.rs | 14 ++++++++++++++ tests/crashes/139817.rs | 8 ++++++++ tests/crashes/139825.rs | 5 +++++ 25 files changed, 332 insertions(+) create mode 100644 tests/crashes/138156.rs create mode 100644 tests/crashes/138240.rs create mode 100644 tests/crashes/138265.rs create mode 100644 tests/crashes/138266.rs create mode 100644 tests/crashes/138359.rs create mode 100644 tests/crashes/138361.rs create mode 100644 tests/crashes/138510.rs create mode 100644 tests/crashes/138534.rs create mode 100644 tests/crashes/138564.rs create mode 100644 tests/crashes/138707.rs create mode 100644 tests/crashes/138738.rs create mode 100644 tests/crashes/139089.rs create mode 100644 tests/crashes/139120.rs create mode 100644 tests/crashes/139381.rs create mode 100644 tests/crashes/139387.rs create mode 100644 tests/crashes/139409.rs create mode 100644 tests/crashes/139462.rs create mode 100644 tests/crashes/139556.rs create mode 100644 tests/crashes/139570.rs create mode 100644 tests/crashes/139596.rs create mode 100644 tests/crashes/139659.rs create mode 100644 tests/crashes/139738.rs create mode 100644 tests/crashes/139815.rs create mode 100644 tests/crashes/139817.rs create mode 100644 tests/crashes/139825.rs diff --git a/tests/crashes/138156.rs b/tests/crashes/138156.rs new file mode 100644 index 0000000000000..48c6455627f0b --- /dev/null +++ b/tests/crashes/138156.rs @@ -0,0 +1,42 @@ +//@ known-bug: #138156 + +#![feature(generic_const_exprs)] + +#[derive(Default)] +pub struct GenId; + +pub trait IndexTrait: Default { + const IDX: usize; +} +pub trait ToplogyIndex { + type Idx: IndexTrait; +} + +#[derive(Default)] +pub struct Expression { + pub data: T, +} + +fn i(s: Expression) -> + Expression> +where + GenId<{ IDX0 | IDX1 }>: ToplogyIndex, +{ + Expression::default() +} + +pub fn sum(s: Expression) -> Expression +where + [(); In::Idx::IDX]:, +{ + s +} + +fn param_position(s: Expression) +where + GenId<{ 1 | 2 }>: ToplogyIndex, +{ + sum(i::<_, 1, 2>(s)); +} + +fn main() {} diff --git a/tests/crashes/138240.rs b/tests/crashes/138240.rs new file mode 100644 index 0000000000000..6ffb7868bd5d8 --- /dev/null +++ b/tests/crashes/138240.rs @@ -0,0 +1,9 @@ +//@ known-bug: #138240 +//@edition:2024 +#![feature(min_generic_const_args)] +#![feature(inherent_associated_types)] +async fn _CF() -> Box<[u8; Box::b]> { + Box::new(true) +} + +fn main() {} diff --git a/tests/crashes/138265.rs b/tests/crashes/138265.rs new file mode 100644 index 0000000000000..f6c8ea748895c --- /dev/null +++ b/tests/crashes/138265.rs @@ -0,0 +1,12 @@ +//@ known-bug: #138265 + +#![feature(coerce_unsized)] +#![crate_type = "lib"] +impl std::ops::CoerceUnsized for A {} +pub fn f() { + [0; { + let mut c = &0; + c = &0; + 0 + }] +} diff --git a/tests/crashes/138266.rs b/tests/crashes/138266.rs new file mode 100644 index 0000000000000..9a4de9abcff5c --- /dev/null +++ b/tests/crashes/138266.rs @@ -0,0 +1,7 @@ +//@ known-bug: #138266 +//@compile-flags: --crate-type=lib +#![feature(min_generic_const_args)] +#![feature(inherent_associated_types)] +pub fn f(mut x: [u8; Box::b]) { + x[72] = 1; +} diff --git a/tests/crashes/138359.rs b/tests/crashes/138359.rs new file mode 100644 index 0000000000000..d4376d536eecc --- /dev/null +++ b/tests/crashes/138359.rs @@ -0,0 +1,8 @@ +//@ known-bug: #138359 +#![feature(min_generic_const_args)] +#![feature(inherent_associated_types)] +struct a(Box<[u8; Box::b]>); +impl a { + fn c(self) { self.0.da } +} +fn main() {} diff --git a/tests/crashes/138361.rs b/tests/crashes/138361.rs new file mode 100644 index 0000000000000..8661ed374744a --- /dev/null +++ b/tests/crashes/138361.rs @@ -0,0 +1,6 @@ +//@ known-bug: #138361 + +fn main() { + [0; loop{}]; + std::mem::transmute(4) +} diff --git a/tests/crashes/138510.rs b/tests/crashes/138510.rs new file mode 100644 index 0000000000000..f429e8bb33b56 --- /dev/null +++ b/tests/crashes/138510.rs @@ -0,0 +1,7 @@ +//@ known-bug: #138510 +fn main() +where + #[repr()] + _: Sized, +{ +} diff --git a/tests/crashes/138534.rs b/tests/crashes/138534.rs new file mode 100644 index 0000000000000..80f9cd2251837 --- /dev/null +++ b/tests/crashes/138534.rs @@ -0,0 +1,6 @@ +//@ known-bug: #138534 +//@compile-flags: -Zunpretty=expanded +#[repr(bool)] +pub enum TopFg { + Bar, +} diff --git a/tests/crashes/138564.rs b/tests/crashes/138564.rs new file mode 100644 index 0000000000000..b10f75f8cdd0c --- /dev/null +++ b/tests/crashes/138564.rs @@ -0,0 +1,26 @@ +//@ known-bug: #138564 +//@compile-flags: -Copt-level=0 -Cdebuginfo=2 --crate-type lib +#![feature(unsize, dispatch_from_dyn, arbitrary_self_types)] + +use std::marker::Unsize; +use std::ops::{Deref, DispatchFromDyn}; + +#[repr(align(16))] +pub struct MyPointer(*const T); + +impl, U: ?Sized> DispatchFromDyn> for MyPointer {} +impl Deref for MyPointer { + type Target = T; + fn deref(&self) -> &T { + unimplemented!() + } +} + +pub trait Trait { + fn foo(self: MyPointer) {} +} + +// make sure some usage of `::foo` makes it to codegen +pub fn user() -> *const () { + ::foo as *const () +} diff --git a/tests/crashes/138707.rs b/tests/crashes/138707.rs new file mode 100644 index 0000000000000..4d9a82500ec45 --- /dev/null +++ b/tests/crashes/138707.rs @@ -0,0 +1,37 @@ +//@ known-bug: #138707 +//@edition:2024 +//@compile-flags: --crate-type lib +use core::marker::PhantomData; + +struct LeftReflector { + _phantom: PhantomData, +} + +struct DefaultAllocator {} + +trait Allocator { + type Buffer; +} + +struct U2 {} + +impl Allocator for DefaultAllocator { + type Buffer = [u8; 2]; +} + +impl From for LeftReflector<>::Buffer> +where + DefaultAllocator: Allocator, +{ + fn from(_: R) -> Self { + todo!() + } +} + +fn ice(a: U2) +where + DefaultAllocator: Allocator, +{ + // ICE + let _ = LeftReflector::from(a); +} diff --git a/tests/crashes/138738.rs b/tests/crashes/138738.rs new file mode 100644 index 0000000000000..74e5effa56f58 --- /dev/null +++ b/tests/crashes/138738.rs @@ -0,0 +1,7 @@ +//@ known-bug: #138738 +//@ only-x86_64 + +#![feature(abi_ptx)] +fn main() { + let a = unsafe { core::mem::transmute::(4) }(2); +} diff --git a/tests/crashes/139089.rs b/tests/crashes/139089.rs new file mode 100644 index 0000000000000..3326aa6ad9846 --- /dev/null +++ b/tests/crashes/139089.rs @@ -0,0 +1,2 @@ +//@ known-bug: #139089 +pub fn foo3(x: ＆Vec) { x.push(0); } diff --git a/tests/crashes/139120.rs b/tests/crashes/139120.rs new file mode 100644 index 0000000000000..f946f010c44ef --- /dev/null +++ b/tests/crashes/139120.rs @@ -0,0 +1,29 @@ +//@ known-bug: #139120 + + + +pub trait Foo { + type Bar<'a>; +} + +pub struct FooImpl {} + +impl Foo for FooImpl { + type Bar<'a> = (); +} + +pub trait FooFn { + fn bar(&self); +} + +impl FooFn for fn(T, T::Bar<'_>) { + fn bar(&self) {} +} + +fn foo(f: fn(T, T::Bar<'_>)) { + let _: &dyn FooFn = &f; +} + +fn main() { + foo(|_: FooImpl, _| {}); +} diff --git a/tests/crashes/139381.rs b/tests/crashes/139381.rs new file mode 100644 index 0000000000000..6757b584e82a1 --- /dev/null +++ b/tests/crashes/139381.rs @@ -0,0 +1,13 @@ +//@ known-bug: #139381 +//@ needs-rustc-debug-assertions +trait A<'a> { + type Assoc: ?Sized; +} + +impl<'a> A<'a> for () { + type Assoc = &'a (); +} + +fn hello() -> impl for<'a> A<'a, Assoc: Into + 'static + Copy> { + () +} diff --git a/tests/crashes/139387.rs b/tests/crashes/139387.rs new file mode 100644 index 0000000000000..133643ad084ba --- /dev/null +++ b/tests/crashes/139387.rs @@ -0,0 +1,15 @@ +//@ known-bug: #139387 +//@ needs-rustc-debug-assertions + +trait A { + fn method() -> impl Sized; +} +trait B { + fn method(Hash: Wrap Epsilon<'_, SI1: Eta>>>) -> impl Sized; +} + +fn ambiguous() +where + T::method(..): Send, +{ +} diff --git a/tests/crashes/139409.rs b/tests/crashes/139409.rs new file mode 100644 index 0000000000000..68cbfa153deb0 --- /dev/null +++ b/tests/crashes/139409.rs @@ -0,0 +1,12 @@ +//@ known-bug: #139409 +//@ compile-flags: -Znext-solver=globally + +fn main() { + trait B {} + impl B for () {} + trait D: B + B { + fn f(&self) {} + } + impl D for () {} + (&() as &dyn D<&(), &()>).f() +} diff --git a/tests/crashes/139462.rs b/tests/crashes/139462.rs new file mode 100644 index 0000000000000..05bb246d7be0e --- /dev/null +++ b/tests/crashes/139462.rs @@ -0,0 +1,8 @@ +//@ known-bug: #139462 +//@ compile-flags: -Cdebuginfo=2 +#![feature(unsafe_binders)] +use std::unsafe_binder::wrap_binder; +fn main() { + let foo = 0; + let foo: unsafe<'a> &'a u32 = unsafe { wrap_binder!(&foo) }; +} diff --git a/tests/crashes/139556.rs b/tests/crashes/139556.rs new file mode 100644 index 0000000000000..60dc8d7c3afcc --- /dev/null +++ b/tests/crashes/139556.rs @@ -0,0 +1,13 @@ +//@ known-bug: #139556 + +trait T {} + +type Alias<'a> = impl T; + +struct S; +impl<'a> T for &'a S {} + +#[define_opaque(Alias)] +fn with_positive(fun: impl Fn(Alias<'_>)) { + with_positive(|&n| ()); +} diff --git a/tests/crashes/139570.rs b/tests/crashes/139570.rs new file mode 100644 index 0000000000000..9c001aaf848aa --- /dev/null +++ b/tests/crashes/139570.rs @@ -0,0 +1,4 @@ +//@ known-bug: #139570 +fn main() { + |(1, 42), ()| yield; +} diff --git a/tests/crashes/139596.rs b/tests/crashes/139596.rs new file mode 100644 index 0000000000000..590cfddf83e29 --- /dev/null +++ b/tests/crashes/139596.rs @@ -0,0 +1,10 @@ +//@ known-bug: #139596 + +#![feature(min_generic_const_args)] +struct Colour; + +struct Led; + +fn main() { + Led::<{ Colour}>; +} diff --git a/tests/crashes/139659.rs b/tests/crashes/139659.rs new file mode 100644 index 0000000000000..7fc33f7e6a7cf --- /dev/null +++ b/tests/crashes/139659.rs @@ -0,0 +1,29 @@ +//@ known-bug: #139659 +//@compile-flags: -Cdebuginfo=2 -Copt-level=0 --crate-type lib +trait Trait { + type Output; +} + +impl O> Trait for F { + type Output = O; +} + +struct Wrap

(P); +struct WrapOutput(O); + +impl Trait for Wrap

{ + type Output = WrapOutput; +} + +fn wrap(x: P) -> impl Trait { + Wrap(x) +} + +fn consume(_: P) -> P::Output { + unimplemented!() +} + +pub fn recurse() -> impl Sized { + consume(wrap(recurse)) +} +pub fn main() {} diff --git a/tests/crashes/139738.rs b/tests/crashes/139738.rs new file mode 100644 index 0000000000000..c0e7307de6c3f --- /dev/null +++ b/tests/crashes/139738.rs @@ -0,0 +1,3 @@ +//@ known-bug: #139738 +#![feature(generic_const_exprs)] +fn b<'a>() -> impl IntoIterator<[(); (|_: &'a u8| 0, 0).1]> {} diff --git a/tests/crashes/139815.rs b/tests/crashes/139815.rs new file mode 100644 index 0000000000000..9094acdc94b21 --- /dev/null +++ b/tests/crashes/139815.rs @@ -0,0 +1,14 @@ +//@ known-bug: #139815 + +#![feature(generic_const_exprs)] +fn is_123( + x: [u32; { + N + 1; + 5 + }], +) -> bool { + match x { + [1, 2] => true, + _ => false, + } +} diff --git a/tests/crashes/139817.rs b/tests/crashes/139817.rs new file mode 100644 index 0000000000000..d439ed4cacbd6 --- /dev/null +++ b/tests/crashes/139817.rs @@ -0,0 +1,8 @@ +//@ known-bug: #139817 +fn enum_upvar() { + type T = impl Copy; + let foo: T = Some((42, std::marker::PhantomData::)); + let x = move || match foo { + None => (), + }; +} diff --git a/tests/crashes/139825.rs b/tests/crashes/139825.rs new file mode 100644 index 0000000000000..8c5b6b80f0bad --- /dev/null +++ b/tests/crashes/139825.rs @@ -0,0 +1,5 @@ +//@ known-bug: #139825 +//@compile-flags: --check-cfg=cfg(docsrs,test) --crate-type lib +struct a +where + for<#[cfg(b)] c> u8:; From bc68d3a14467ef6fcebb003f79c2f4c5ef5dd08e Mon Sep 17 00:00:00 2001 From: Guillaume Gomez Date: Thu, 1 May 2025 17:42:13 +0200 Subject: [PATCH 81/90] Improve error output in case `nodejs` or `npm` is not installed for rustdoc-gui test suite --- src/tools/rustdoc-gui-test/src/config.rs | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/src/tools/rustdoc-gui-test/src/config.rs b/src/tools/rustdoc-gui-test/src/config.rs index 950e2fa478dcf..b9d08a0a2950d 100644 --- a/src/tools/rustdoc-gui-test/src/config.rs +++ b/src/tools/rustdoc-gui-test/src/config.rs @@ -20,8 +20,8 @@ pub(crate) struct Config { impl Config { pub(crate) fn from_args(args: Vec) -> Self { let mut opts = Options::new(); - opts.reqopt("", "nodejs", "absolute path of nodejs", "PATH") - .reqopt("", "npm", "absolute path of npm", "PATH") + opts.optopt("", "nodejs", "absolute path of nodejs", "PATH") + .optopt("", "npm", "absolute path of npm", "PATH") .reqopt("", "out-dir", "output path of doc compilation", "PATH") .reqopt("", "rust-src", "root source of the rust source", "PATH") .reqopt( @@ -47,9 +47,18 @@ impl Config { Err(f) => panic!("{:?}", f), }; + let Some(nodejs) = matches.opt_str("nodejs").map(PathBuf::from) else { + eprintln!("`nodejs` was not provided. If not available, please install it"); + std::process::exit(1); + }; + let Some(npm) = matches.opt_str("npm").map(PathBuf::from) else { + eprintln!("`npm` was not provided. If not available, please install it"); + std::process::exit(1); + }; + Self { - nodejs: matches.opt_str("nodejs").map(PathBuf::from).expect("nodejs isn't available"), - npm: matches.opt_str("npm").map(PathBuf::from).expect("npm isn't available"), + nodejs, + npm, rust_src: matches.opt_str("rust-src").map(PathBuf::from).unwrap(), out_dir: matches.opt_str("out-dir").map(PathBuf::from).unwrap(), initial_cargo: matches.opt_str("initial-cargo").map(PathBuf::from).unwrap(), From 951412e2f3cf2b27f9a22076b5cb77fb8ff5f259 Mon Sep 17 00:00:00 2001 From: Erick Tryzelaar Date: Thu, 1 May 2025 00:37:37 +0000 Subject: [PATCH 82/90] PassWrapper: adapt for llvm/llvm-project@f137c3d592e96330e450a8fd63ef7e8877fc1908 In LLVM 21 PR https://github.com/llvm/llvm-project/pull/130940 `TargetRegistry::createTargetMachine` was changed to take a `const Triple&` and has deprecated the old `StringRef` method. @rustbot label llvm-main --- compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp b/compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp index ebe8eb57f2cd5..d4a05fbbbc5d1 100644 --- a/compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp +++ b/compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp @@ -512,8 +512,13 @@ extern "C" LLVMTargetMachineRef LLVMRustCreateTargetMachine( #endif } +#if LLVM_VERSION_GE(21, 0) + TargetMachine *TM = TheTarget->createTargetMachine(Trip, CPU, Feature, + Options, RM, CM, OptLevel); +#else TargetMachine *TM = TheTarget->createTargetMachine( Trip.getTriple(), CPU, Feature, Options, RM, CM, OptLevel); +#endif return wrap(TM); } From 238d113b0726b9734ec42737cbc461d08520bf35 Mon Sep 17 00:00:00 2001 From: Boxy Date: Thu, 1 May 2025 13:26:23 +0100 Subject: [PATCH 83/90] Set groundwork for proper const normalization --- compiler/rustc_infer/src/infer/projection.rs | 25 ++- compiler/rustc_middle/src/ty/context.rs | 12 +- compiler/rustc_middle/src/ty/print/pretty.rs | 5 +- compiler/rustc_middle/src/ty/util.rs | 2 + .../rustc_mir_build/src/thir/pattern/mod.rs | 2 + .../src/solve/normalizes_to/free_alias.rs | 16 +- .../src/solve/normalizes_to/inherent.rs | 13 +- .../src/solve/normalizes_to/mod.rs | 10 +- .../rustc_trait_selection/src/traits/mod.rs | 2 +- .../src/traits/normalize.rs | 196 ++++++++++-------- .../src/traits/project.rs | 170 ++++++++------- .../src/traits/select/confirmation.rs | 1 - .../rustc_trait_selection/src/traits/wf.rs | 20 +- .../src/normalize_projection_ty.rs | 14 +- compiler/rustc_type_ir/src/predicate.rs | 70 ++++++- compiler/rustc_type_ir/src/relate.rs | 2 + compiler/rustc_type_ir/src/ty_kind.rs | 22 -- .../cross_crate_predicate.stderr | 15 +- 18 files changed, 369 insertions(+), 228 deletions(-) diff --git a/compiler/rustc_infer/src/infer/projection.rs b/compiler/rustc_infer/src/infer/projection.rs index 1bee9632110bd..2a4f9db8963c8 100644 --- a/compiler/rustc_infer/src/infer/projection.rs +++ b/compiler/rustc_infer/src/infer/projection.rs @@ -1,7 +1,8 @@ use rustc_middle::traits::ObligationCause; -use rustc_middle::ty::{self, Ty}; +use rustc_middle::ty; use super::InferCtxt; +use crate::infer::Term; use crate::traits::{Obligation, PredicateObligations}; impl<'tcx> InferCtxt<'tcx> { @@ -11,24 +12,32 @@ impl<'tcx> InferCtxt<'tcx> { /// of the given projection. This allows us to proceed with projections /// while they cannot be resolved yet due to missing information or /// simply due to the lack of access to the trait resolution machinery. - pub fn projection_ty_to_infer( + pub fn projection_term_to_infer( &self, param_env: ty::ParamEnv<'tcx>, - projection_ty: ty::AliasTy<'tcx>, + alias_term: ty::AliasTerm<'tcx>, cause: ObligationCause<'tcx>, recursion_depth: usize, obligations: &mut PredicateObligations<'tcx>, - ) -> Ty<'tcx> { + ) -> Term<'tcx> { debug_assert!(!self.next_trait_solver()); - let ty_var = self.next_ty_var(self.tcx.def_span(projection_ty.def_id)); + + let span = self.tcx.def_span(alias_term.def_id); + let infer_var = if alias_term.kind(self.tcx).is_type() { + self.next_ty_var(span).into() + } else { + self.next_const_var(span).into() + }; + let projection = ty::PredicateKind::Clause(ty::ClauseKind::Projection(ty::ProjectionPredicate { - projection_term: projection_ty.into(), - term: ty_var.into(), + projection_term: alias_term, + term: infer_var, })); let obligation = Obligation::with_depth(self.tcx, cause, recursion_depth, param_env, projection); obligations.push(obligation); - ty_var + + infer_var } } diff --git a/compiler/rustc_middle/src/ty/context.rs b/compiler/rustc_middle/src/ty/context.rs index 3ea285d3d8eb8..0f7f8527088c4 100644 --- a/compiler/rustc_middle/src/ty/context.rs +++ b/compiler/rustc_middle/src/ty/context.rs @@ -243,10 +243,18 @@ impl<'tcx> Interner for TyCtxt<'tcx> { ty::AliasTermKind::ProjectionTy } } + DefKind::AssocConst => { + if let DefKind::Impl { of_trait: false } = self.def_kind(self.parent(alias.def_id)) + { + ty::AliasTermKind::InherentConst + } else { + ty::AliasTermKind::ProjectionConst + } + } DefKind::OpaqueTy => ty::AliasTermKind::OpaqueTy, DefKind::TyAlias => ty::AliasTermKind::FreeTy, - DefKind::AssocConst => ty::AliasTermKind::ProjectionConst, - DefKind::AnonConst | DefKind::Const | DefKind::Ctor(_, CtorKind::Const) => { + DefKind::Const => ty::AliasTermKind::FreeConst, + DefKind::AnonConst | DefKind::Ctor(_, CtorKind::Const) => { ty::AliasTermKind::UnevaluatedConst } kind => bug!("unexpected DefKind in AliasTy: {kind:?}"), diff --git a/compiler/rustc_middle/src/ty/print/pretty.rs b/compiler/rustc_middle/src/ty/print/pretty.rs index ad8677f7c7da2..af90c2fb95dab 100644 --- a/compiler/rustc_middle/src/ty/print/pretty.rs +++ b/compiler/rustc_middle/src/ty/print/pretty.rs @@ -3195,7 +3195,7 @@ define_print! { ty::AliasTerm<'tcx> { match self.kind(cx.tcx()) { - ty::AliasTermKind::InherentTy => p!(pretty_print_inherent_projection(*self)), + ty::AliasTermKind::InherentTy | ty::AliasTermKind::InherentConst => p!(pretty_print_inherent_projection(*self)), ty::AliasTermKind::ProjectionTy => { if !(cx.should_print_verbose() || with_reduced_queries()) && cx.tcx().is_impl_trait_in_trait(self.def_id) @@ -3205,7 +3205,8 @@ define_print! { p!(print_def_path(self.def_id, self.args)); } } - | ty::AliasTermKind::FreeTy + ty::AliasTermKind::FreeTy + | ty::AliasTermKind::FreeConst | ty::AliasTermKind::OpaqueTy | ty::AliasTermKind::UnevaluatedConst | ty::AliasTermKind::ProjectionConst => { diff --git a/compiler/rustc_middle/src/ty/util.rs b/compiler/rustc_middle/src/ty/util.rs index f5158edffcff4..6fe5927c29fcb 100644 --- a/compiler/rustc_middle/src/ty/util.rs +++ b/compiler/rustc_middle/src/ty/util.rs @@ -966,7 +966,9 @@ impl<'tcx> TyCtxt<'tcx> { } ty::AliasTermKind::OpaqueTy => Some(self.variances_of(def_id)), ty::AliasTermKind::InherentTy + | ty::AliasTermKind::InherentConst | ty::AliasTermKind::FreeTy + | ty::AliasTermKind::FreeConst | ty::AliasTermKind::UnevaluatedConst | ty::AliasTermKind::ProjectionConst => None, } diff --git a/compiler/rustc_mir_build/src/thir/pattern/mod.rs b/compiler/rustc_mir_build/src/thir/pattern/mod.rs index 8e69ff568b928..4a7e98f24ae32 100644 --- a/compiler/rustc_mir_build/src/thir/pattern/mod.rs +++ b/compiler/rustc_mir_build/src/thir/pattern/mod.rs @@ -568,6 +568,8 @@ impl<'a, 'tcx> PatCtxt<'a, 'tcx> { // Lower the named constant to a THIR pattern. let args = self.typeck_results.node_args(id); + // FIXME(mgca): we will need to special case IACs here to have type system compatible + // generic args, instead of how we represent them in body expressions. let c = ty::Const::new_unevaluated(self.tcx, ty::UnevaluatedConst { def: def_id, args }); let mut pattern = self.const_to_pat(c, ty, id, span); diff --git a/compiler/rustc_next_trait_solver/src/solve/normalizes_to/free_alias.rs b/compiler/rustc_next_trait_solver/src/solve/normalizes_to/free_alias.rs index d077f8a9be8ad..8aa6e4a3d7118 100644 --- a/compiler/rustc_next_trait_solver/src/solve/normalizes_to/free_alias.rs +++ b/compiler/rustc_next_trait_solver/src/solve/normalizes_to/free_alias.rs @@ -19,19 +19,25 @@ where goal: Goal>, ) -> QueryResult { let cx = self.cx(); - let free_ty = goal.predicate.alias; + let free_alias = goal.predicate.alias; // Check where clauses self.add_goals( GoalSource::Misc, - cx.predicates_of(free_ty.def_id) - .iter_instantiated(cx, free_ty.args) + cx.predicates_of(free_alias.def_id) + .iter_instantiated(cx, free_alias.args) .map(|pred| goal.with(cx, pred)), ); - let actual = cx.type_of(free_ty.def_id).instantiate(cx, free_ty.args); - self.instantiate_normalizes_to_term(goal, actual.into()); + let actual = if free_alias.kind(cx).is_type() { + cx.type_of(free_alias.def_id).instantiate(cx, free_alias.args) + } else { + // FIXME(mgca): once const items are actual aliases defined as equal to type system consts + // this should instead return that. + panic!("normalizing free const aliases in the type system is unsupported"); + }; + self.instantiate_normalizes_to_term(goal, actual.into()); self.evaluate_added_goals_and_make_canonical_response(Certainty::Yes) } } diff --git a/compiler/rustc_next_trait_solver/src/solve/normalizes_to/inherent.rs b/compiler/rustc_next_trait_solver/src/solve/normalizes_to/inherent.rs index 1d1ff09ee4104..2640238f5a904 100644 --- a/compiler/rustc_next_trait_solver/src/solve/normalizes_to/inherent.rs +++ b/compiler/rustc_next_trait_solver/src/solve/normalizes_to/inherent.rs @@ -15,12 +15,12 @@ where D: SolverDelegate, I: Interner, { - pub(super) fn normalize_inherent_associated_type( + pub(super) fn normalize_inherent_associated_term( &mut self, goal: Goal>, ) -> QueryResult { let cx = self.cx(); - let inherent = goal.predicate.alias.expect_ty(cx); + let inherent = goal.predicate.alias; let impl_def_id = cx.parent(inherent.def_id); let impl_args = self.fresh_args_for_item(impl_def_id); @@ -48,8 +48,13 @@ where .map(|pred| goal.with(cx, pred)), ); - let normalized = cx.type_of(inherent.def_id).instantiate(cx, inherent_args); - self.instantiate_normalizes_to_term(goal, normalized.into()); + let normalized = if inherent.kind(cx).is_type() { + cx.type_of(inherent.def_id).instantiate(cx, inherent_args).into() + } else { + // FIXME(mgca): Properly handle IACs in the type system + panic!("normalizing inherent associated consts in the type system is unsupported"); + }; + self.instantiate_normalizes_to_term(goal, normalized); self.evaluate_added_goals_and_make_canonical_response(Certainty::Yes) } } diff --git a/compiler/rustc_next_trait_solver/src/solve/normalizes_to/mod.rs b/compiler/rustc_next_trait_solver/src/solve/normalizes_to/mod.rs index b030af483817e..400b4ce1200cb 100644 --- a/compiler/rustc_next_trait_solver/src/solve/normalizes_to/mod.rs +++ b/compiler/rustc_next_trait_solver/src/solve/normalizes_to/mod.rs @@ -48,9 +48,13 @@ where }) }) } - ty::AliasTermKind::InherentTy => self.normalize_inherent_associated_type(goal), + ty::AliasTermKind::InherentTy | ty::AliasTermKind::InherentConst => { + self.normalize_inherent_associated_term(goal) + } ty::AliasTermKind::OpaqueTy => self.normalize_opaque_type(goal), - ty::AliasTermKind::FreeTy => self.normalize_free_alias(goal), + ty::AliasTermKind::FreeTy | ty::AliasTermKind::FreeConst => { + self.normalize_free_alias(goal) + } ty::AliasTermKind::UnevaluatedConst => self.normalize_anon_const(goal), } } @@ -333,6 +337,8 @@ where cx.type_of(target_item_def_id).map_bound(|ty| ty.into()) } ty::AliasTermKind::ProjectionConst => { + // FIXME(mgca): once const items are actual aliases defined as equal to type system consts + // this should instead return that. if cx.features().associated_const_equality() { panic!("associated const projection is not supported yet") } else { diff --git a/compiler/rustc_trait_selection/src/traits/mod.rs b/compiler/rustc_trait_selection/src/traits/mod.rs index 0987c5b42d881..5b938456e03b0 100644 --- a/compiler/rustc_trait_selection/src/traits/mod.rs +++ b/compiler/rustc_trait_selection/src/traits/mod.rs @@ -51,7 +51,7 @@ pub use self::dyn_compatibility::{ pub use self::engine::{ObligationCtxt, TraitEngineExt}; pub use self::fulfill::{FulfillmentContext, OldSolverError, PendingPredicateObligation}; pub use self::normalize::NormalizeExt; -pub use self::project::{normalize_inherent_projection, normalize_projection_ty}; +pub use self::project::{normalize_inherent_projection, normalize_projection_term}; pub use self::select::{ EvaluationCache, EvaluationResult, IntercrateAmbiguityCause, OverflowError, SelectionCache, SelectionContext, diff --git a/compiler/rustc_trait_selection/src/traits/normalize.rs b/compiler/rustc_trait_selection/src/traits/normalize.rs index e08428f925c97..88a0c402702e1 100644 --- a/compiler/rustc_trait_selection/src/traits/normalize.rs +++ b/compiler/rustc_trait_selection/src/traits/normalize.rs @@ -1,6 +1,7 @@ //! Deeply normalize types using the old trait solver. use rustc_data_structures::stack::ensure_sufficient_stack; +use rustc_hir::def::DefKind; use rustc_infer::infer::at::At; use rustc_infer::infer::{InferCtxt, InferOk}; use rustc_infer::traits::{ @@ -10,15 +11,12 @@ use rustc_macros::extension; use rustc_middle::span_bug; use rustc_middle::traits::{ObligationCause, ObligationCauseCode}; use rustc_middle::ty::{ - self, AliasTy, Ty, TyCtxt, TypeFoldable, TypeFolder, TypeSuperFoldable, TypeVisitable, + self, AliasTerm, Term, Ty, TyCtxt, TypeFoldable, TypeFolder, TypeSuperFoldable, TypeVisitable, TypeVisitableExt, TypingMode, }; use tracing::{debug, instrument}; -use super::{ - BoundVarReplacer, PlaceholderReplacer, SelectionContext, project, - with_replaced_escaping_bound_vars, -}; +use super::{BoundVarReplacer, PlaceholderReplacer, SelectionContext, project}; use crate::error_reporting::InferCtxtErrorExt; use crate::error_reporting::traits::OverflowCause; use crate::solve::NextSolverError; @@ -179,8 +177,10 @@ impl<'a, 'b, 'tcx> AssocTypeNormalizer<'a, 'b, 'tcx> { if !needs_normalization(self.selcx.infcx, &value) { value } else { value.fold_with(self) } } - fn normalize_trait_projection(&mut self, data: AliasTy<'tcx>) -> Ty<'tcx> { - if !data.has_escaping_bound_vars() { + // FIXME(mgca): While this supports constants, it is only used for types by default right now + #[instrument(level = "debug", skip(self), ret)] + fn normalize_trait_projection(&mut self, proj: AliasTerm<'tcx>) -> Term<'tcx> { + if !proj.has_escaping_bound_vars() { // When we don't have escaping bound vars we can normalize ambig aliases // to inference variables (done in `normalize_projection_ty`). This would // be wrong if there were escaping bound vars as even if we instantiated @@ -189,23 +189,15 @@ impl<'a, 'b, 'tcx> AssocTypeNormalizer<'a, 'b, 'tcx> { // // Also, as an optimization: when we don't have escaping bound vars, we don't // need to replace them with placeholders (see branch below). - let data = data.fold_with(self); - let normalized_ty = project::normalize_projection_ty( + let proj = proj.fold_with(self); + project::normalize_projection_term( self.selcx, self.param_env, - data, + proj, self.cause.clone(), self.depth, self.obligations, - ); - debug!( - ?self.depth, - ?ty, - ?normalized_ty, - obligations.len = ?self.obligations.len(), - "AssocTypeNormalizer: normalized type" - ); - normalized_ty.expect_type() + ) } else { // If there are escaping bound vars, we temporarily replace the // bound vars with placeholders. Note though, that in the case @@ -218,72 +210,64 @@ impl<'a, 'b, 'tcx> AssocTypeNormalizer<'a, 'b, 'tcx> { // Note: this isn't necessarily the final approach here; we may // want to figure out how to register obligations with escaping vars // or handle this some other way. - let infcx = self.selcx.infcx; - let (data, mapped_regions, mapped_types, mapped_consts) = - BoundVarReplacer::replace_bound_vars(infcx, &mut self.universes, data); - let data = data.fold_with(self); - let normalized_ty = project::opt_normalize_projection_term( + let (proj, mapped_regions, mapped_types, mapped_consts) = + BoundVarReplacer::replace_bound_vars(infcx, &mut self.universes, proj); + let proj = proj.fold_with(self); + let normalized_term = project::opt_normalize_projection_term( self.selcx, self.param_env, - data.into(), + proj, self.cause.clone(), self.depth, self.obligations, ) .ok() .flatten() - .map(|term| term.expect_type()) - .map(|normalized_ty| { - PlaceholderReplacer::replace_placeholders( - infcx, - mapped_regions, - mapped_types, - mapped_consts, - &self.universes, - normalized_ty, - ) - }) - .unwrap_or_else(|| ty.super_fold_with(self)); - - debug!( - ?self.depth, - ?ty, - ?normalized_ty, - obligations.len = ?self.obligations.len(), - "AssocTypeNormalizer: normalized type" - ); - normalized_ty + .unwrap_or(proj.to_term(infcx.tcx)); + + PlaceholderReplacer::replace_placeholders( + infcx, + mapped_regions, + mapped_types, + mapped_consts, + &self.universes, + normalized_term, + ) } } - fn normalize_inherent_projection(&mut self, data: AliasTy<'tcx>) -> Ty<'tcx> { - if !data.has_escaping_bound_vars() { - // This branch is *mostly* just an optimization: when we don't - // have escaping bound vars, we don't need to replace them with - // placeholders (see branch below). *Also*, we know that we can - // register an obligation to *later* project, since we know - // there won't be bound vars there. - - let data = data.fold_with(self); + // FIXME(mgca): While this supports constants, it is only used for types by default right now + #[instrument(level = "debug", skip(self), ret)] + fn normalize_inherent_projection(&mut self, inherent: AliasTerm<'tcx>) -> Term<'tcx> { + if !inherent.has_escaping_bound_vars() { + // When we don't have escaping bound vars we can normalize ambig aliases + // to inference variables (done in `normalize_projection_ty`). This would + // be wrong if there were escaping bound vars as even if we instantiated + // the bound vars with placeholders, we wouldn't be able to map them back + // after normalization succeeded. + // + // Also, as an optimization: when we don't have escaping bound vars, we don't + // need to replace them with placeholders (see branch below). + let inherent = inherent.fold_with(self); project::normalize_inherent_projection( self.selcx, self.param_env, - data, + inherent, self.cause.clone(), self.depth, self.obligations, ) } else { let infcx = self.selcx.infcx; - let (data, mapped_regions, mapped_types, mapped_consts) = - BoundVarReplacer::replace_bound_vars(infcx, &mut self.universes, data); - let data = data.fold_with(self); - let ty = project::normalize_inherent_projection( + let (inherent, mapped_regions, mapped_types, mapped_consts) = + BoundVarReplacer::replace_bound_vars(infcx, &mut self.universes, inherent); + let inherent = inherent.fold_with(self); + let inherent = project::normalize_inherent_projection( self.selcx, self.param_env, - data, + inherent, self.cause.clone(), self.depth, self.obligations, @@ -295,16 +279,18 @@ impl<'a, 'b, 'tcx> AssocTypeNormalizer<'a, 'b, 'tcx> { mapped_types, mapped_consts, &self.universes, - ty, + inherent, ) } } - fn normalize_free_alias(&mut self, data: AliasTy<'tcx>) -> Ty<'tcx> { + // FIXME(mgca): While this supports constants, it is only used for types by default right now + #[instrument(level = "debug", skip(self), ret)] + fn normalize_free_alias(&mut self, free: AliasTerm<'tcx>) -> Term<'tcx> { let recursion_limit = self.cx().recursion_limit(); if !recursion_limit.value_within_limit(self.depth) { self.selcx.infcx.err_ctxt().report_overflow_error( - OverflowCause::DeeplyNormalize(data.into()), + OverflowCause::DeeplyNormalize(free.into()), self.cause.span, false, |diag| { @@ -315,9 +301,13 @@ impl<'a, 'b, 'tcx> AssocTypeNormalizer<'a, 'b, 'tcx> { let infcx = self.selcx.infcx; self.obligations.extend( - infcx.tcx.predicates_of(data.def_id).instantiate_own(infcx.tcx, data.args).map( + // FIXME(BoxyUwU): + // FIXME(lazy_type_alias): + // It seems suspicious to instantiate the predicates with arguments that might be bound vars, + // we might wind up instantiating one of these bound vars underneath a hrtb. + infcx.tcx.predicates_of(free.def_id).instantiate_own(infcx.tcx, free.args).map( |(mut predicate, span)| { - if data.has_escaping_bound_vars() { + if free.has_escaping_bound_vars() { (predicate, ..) = BoundVarReplacer::replace_bound_vars( infcx, &mut self.universes, @@ -325,13 +315,21 @@ impl<'a, 'b, 'tcx> AssocTypeNormalizer<'a, 'b, 'tcx> { ); } let mut cause = self.cause.clone(); - cause.map_code(|code| ObligationCauseCode::TypeAlias(code, span, data.def_id)); + cause.map_code(|code| ObligationCauseCode::TypeAlias(code, span, free.def_id)); Obligation::new(infcx.tcx, cause, self.param_env, predicate) }, ), ); self.depth += 1; - let res = infcx.tcx.type_of(data.def_id).instantiate(infcx.tcx, data.args).fold_with(self); + let res = if free.kind(infcx.tcx).is_type() { + infcx.tcx.type_of(free.def_id).instantiate(infcx.tcx, free.args).fold_with(self).into() + } else { + // FIXME(mgca): once const items are actual aliases defined as equal to type system consts + // this should instead use that rather than evaluating. + super::evaluate_const(infcx, free.to_term(infcx.tcx).expect_const(), self.param_env) + .super_fold_with(self) + .into() + }; self.depth -= 1; res } @@ -415,28 +413,64 @@ impl<'a, 'b, 'tcx> TypeFolder> for AssocTypeNormalizer<'a, 'b, 'tcx } } } - ty::Projection => self.normalize_trait_projection(data), - ty::Free => self.normalize_free_alias(data), - ty::Inherent => self.normalize_inherent_projection(data), + + ty::Projection => self.normalize_trait_projection(data.into()).expect_type(), + ty::Inherent => self.normalize_inherent_projection(data.into()).expect_type(), + ty::Free => self.normalize_free_alias(data.into()).expect_type(), } } #[instrument(skip(self), level = "debug")] - fn fold_const(&mut self, constant: ty::Const<'tcx>) -> ty::Const<'tcx> { + fn fold_const(&mut self, ct: ty::Const<'tcx>) -> ty::Const<'tcx> { let tcx = self.selcx.tcx(); - if tcx.features().generic_const_exprs() || !needs_normalization(self.selcx.infcx, &constant) - { - constant + if tcx.features().generic_const_exprs() || !needs_normalization(self.selcx.infcx, &ct) { + return ct; + } + + // Doing "proper" normalization of const aliases is inherently cyclic until const items + // are real aliases instead of having bodies. We gate proper const alias handling behind + // mgca to avoid breaking stable code, though this should become the "main" codepath long + // before mgca is stabilized. + // + // FIXME(BoxyUwU): Enabling this by default is blocked on a refactoring to how const items + // are represented. + if tcx.features().min_generic_const_args() { + let uv = match ct.kind() { + ty::ConstKind::Unevaluated(uv) => uv, + _ => return ct.super_fold_with(self), + }; + + let ct = match tcx.def_kind(uv.def) { + DefKind::AssocConst => match tcx.def_kind(tcx.parent(uv.def)) { + DefKind::Trait => self.normalize_trait_projection(uv.into()), + DefKind::Impl { of_trait: false } => { + self.normalize_inherent_projection(uv.into()) + } + kind => unreachable!( + "unexpected `DefKind` for const alias' resolution's parent def: {:?}", + kind + ), + }, + DefKind::Const | DefKind::AnonConst => self.normalize_free_alias(uv.into()), + kind => { + unreachable!("unexpected `DefKind` for const alias to resolve to: {:?}", kind) + } + }; + + // We re-fold the normalized const as the `ty` field on `ConstKind::Value` may be + // unnormalized after const evaluation returns. + ct.expect_const().super_fold_with(self) } else { - let constant = constant.super_fold_with(self); - debug!(?constant, ?self.param_env); - with_replaced_escaping_bound_vars( + let ct = ct.super_fold_with(self); + return super::with_replaced_escaping_bound_vars( self.selcx.infcx, &mut self.universes, - constant, - |constant| super::evaluate_const(self.selcx.infcx, constant, self.param_env), + ct, + |ct| super::evaluate_const(self.selcx.infcx, ct, self.param_env), ) - .super_fold_with(self) + .super_fold_with(self); + // We re-fold the normalized const as the `ty` field on `ConstKind::Value` may be + // unnormalized after const evaluation returns. } } diff --git a/compiler/rustc_trait_selection/src/traits/project.rs b/compiler/rustc_trait_selection/src/traits/project.rs index dd868c9d40eaf..ca58da5ca6d55 100644 --- a/compiler/rustc_trait_selection/src/traits/project.rs +++ b/compiler/rustc_trait_selection/src/traits/project.rs @@ -5,7 +5,6 @@ use std::ops::ControlFlow; use rustc_data_structures::sso::SsoHashSet; use rustc_data_structures::stack::ensure_sufficient_stack; use rustc_errors::ErrorGuaranteed; -use rustc_hir::def::DefKind; use rustc_hir::lang_items::LangItem; use rustc_infer::infer::DefineOpaqueTypes; use rustc_infer::infer::resolve::OpportunisticRegionResolver; @@ -172,6 +171,7 @@ pub(super) enum ProjectAndUnifyResult<'tcx> { /// ``` /// If successful, this may result in additional obligations. Also returns /// the projection cache key used to track these additional obligations. +// FIXME(mgca): While this supports constants, it is only used for types by default right now #[instrument(level = "debug", skip(selcx))] pub(super) fn poly_project_and_unify_term<'cx, 'tcx>( selcx: &mut SelectionContext<'cx, 'tcx>, @@ -201,6 +201,7 @@ pub(super) fn poly_project_and_unify_term<'cx, 'tcx>( /// If successful, this may result in additional obligations. /// /// See [poly_project_and_unify_term] for an explanation of the return value. +// FIXME(mgca): While this supports constants, it is only used for types by default right now #[instrument(level = "debug", skip(selcx))] fn project_and_unify_term<'cx, 'tcx>( selcx: &mut SelectionContext<'cx, 'tcx>, @@ -258,34 +259,28 @@ fn project_and_unify_term<'cx, 'tcx>( /// there are unresolved type variables in the projection, we will /// instantiate it with a fresh type variable `$X` and generate a new /// obligation `::Item == $X` for later. -pub fn normalize_projection_ty<'a, 'b, 'tcx>( +// FIXME(mgca): While this supports constants, it is only used for types by default right now +pub fn normalize_projection_term<'a, 'b, 'tcx>( selcx: &'a mut SelectionContext<'b, 'tcx>, param_env: ty::ParamEnv<'tcx>, - projection_ty: ty::AliasTy<'tcx>, + alias_term: ty::AliasTerm<'tcx>, cause: ObligationCause<'tcx>, depth: usize, obligations: &mut PredicateObligations<'tcx>, ) -> Term<'tcx> { - opt_normalize_projection_term( - selcx, - param_env, - projection_ty.into(), - cause.clone(), - depth, - obligations, - ) - .ok() - .flatten() - .unwrap_or_else(move || { - // if we bottom out in ambiguity, create a type variable - // and a deferred predicate to resolve this when more type - // information is available. - - selcx - .infcx - .projection_ty_to_infer(param_env, projection_ty, cause, depth + 1, obligations) - .into() - }) + opt_normalize_projection_term(selcx, param_env, alias_term, cause.clone(), depth, obligations) + .ok() + .flatten() + .unwrap_or_else(move || { + // if we bottom out in ambiguity, create a type variable + // and a deferred predicate to resolve this when more type + // information is available. + + selcx + .infcx + .projection_term_to_infer(param_env, alias_term, cause, depth + 1, obligations) + .into() + }) } /// The guts of `normalize`: normalize a specific projection like `( /// often immediately appended to another obligations vector. So now this /// function takes an obligations vector and appends to it directly, which is /// slightly uglier but avoids the need for an extra short-lived allocation. +// FIXME(mgca): While this supports constants, it is only used for types by default right now #[instrument(level = "debug", skip(selcx, param_env, cause, obligations))] pub(super) fn opt_normalize_projection_term<'a, 'b, 'tcx>( selcx: &'a mut SelectionContext<'b, 'tcx>, @@ -456,6 +452,7 @@ pub(super) fn opt_normalize_projection_term<'a, 'b, 'tcx>( /// an error for this obligation, but we legitimately should not, /// because it contains `[type error]`. Yuck! (See issue #29857 for /// one case where this arose.) +// FIXME(mgca): While this supports constants, it is only used for types by default right now fn normalize_to_error<'a, 'tcx>( selcx: &SelectionContext<'a, 'tcx>, param_env: ty::ParamEnv<'tcx>, @@ -469,9 +466,10 @@ fn normalize_to_error<'a, 'tcx>( | ty::AliasTermKind::InherentTy | ty::AliasTermKind::OpaqueTy | ty::AliasTermKind::FreeTy => selcx.infcx.next_ty_var(cause.span).into(), - ty::AliasTermKind::UnevaluatedConst | ty::AliasTermKind::ProjectionConst => { - selcx.infcx.next_const_var(cause.span).into() - } + ty::AliasTermKind::FreeConst + | ty::AliasTermKind::InherentConst + | ty::AliasTermKind::UnevaluatedConst + | ty::AliasTermKind::ProjectionConst => selcx.infcx.next_const_var(cause.span).into(), }; let mut obligations = PredicateObligations::new(); obligations.push(Obligation { @@ -484,36 +482,37 @@ fn normalize_to_error<'a, 'tcx>( } /// Confirm and normalize the given inherent projection. +// FIXME(mgca): While this supports constants, it is only used for types by default right now #[instrument(level = "debug", skip(selcx, param_env, cause, obligations))] pub fn normalize_inherent_projection<'a, 'b, 'tcx>( selcx: &'a mut SelectionContext<'b, 'tcx>, param_env: ty::ParamEnv<'tcx>, - alias_ty: ty::AliasTy<'tcx>, + alias_term: ty::AliasTerm<'tcx>, cause: ObligationCause<'tcx>, depth: usize, obligations: &mut PredicateObligations<'tcx>, -) -> Ty<'tcx> { +) -> ty::Term<'tcx> { let tcx = selcx.tcx(); if !tcx.recursion_limit().value_within_limit(depth) { // Halt compilation because it is important that overflows never be masked. tcx.dcx().emit_fatal(InherentProjectionNormalizationOverflow { span: cause.span, - ty: alias_ty.to_string(), + ty: alias_term.to_string(), }); } - let args = compute_inherent_assoc_ty_args( + let args = compute_inherent_assoc_term_args( selcx, param_env, - alias_ty, + alias_term, cause.clone(), depth, obligations, ); // Register the obligations arising from the impl and from the associated type itself. - let predicates = tcx.predicates_of(alias_ty.def_id).instantiate(tcx, args); + let predicates = tcx.predicates_of(alias_term.def_id).instantiate(tcx, args); for (predicate, span) in predicates { let predicate = normalize_with_depth_to( selcx, @@ -531,7 +530,7 @@ pub fn normalize_inherent_projection<'a, 'b, 'tcx>( // cause code, inherent projections will be printed with identity instantiation in // diagnostics which is not ideal. // Consider creating separate cause codes for this specific situation. - ObligationCauseCode::WhereClause(alias_ty.def_id, span), + ObligationCauseCode::WhereClause(alias_term.def_id, span), ); obligations.push(Obligation::with_depth( @@ -543,27 +542,33 @@ pub fn normalize_inherent_projection<'a, 'b, 'tcx>( )); } - let ty = tcx.type_of(alias_ty.def_id).instantiate(tcx, args); + let term: Term<'tcx> = if alias_term.kind(tcx).is_type() { + tcx.type_of(alias_term.def_id).instantiate(tcx, args).into() + } else { + get_associated_const_value(selcx, alias_term.to_term(tcx).expect_const(), param_env).into() + }; - let mut ty = selcx.infcx.resolve_vars_if_possible(ty); - if ty.has_aliases() { - ty = normalize_with_depth_to(selcx, param_env, cause.clone(), depth + 1, ty, obligations); + let mut term = selcx.infcx.resolve_vars_if_possible(term); + if term.has_aliases() { + term = + normalize_with_depth_to(selcx, param_env, cause.clone(), depth + 1, term, obligations); } - ty + term } -pub fn compute_inherent_assoc_ty_args<'a, 'b, 'tcx>( +// FIXME(mgca): While this supports constants, it is only used for types by default right now +pub fn compute_inherent_assoc_term_args<'a, 'b, 'tcx>( selcx: &'a mut SelectionContext<'b, 'tcx>, param_env: ty::ParamEnv<'tcx>, - alias_ty: ty::AliasTy<'tcx>, + alias_term: ty::AliasTerm<'tcx>, cause: ObligationCause<'tcx>, depth: usize, obligations: &mut PredicateObligations<'tcx>, ) -> ty::GenericArgsRef<'tcx> { let tcx = selcx.tcx(); - let impl_def_id = tcx.parent(alias_ty.def_id); + let impl_def_id = tcx.parent(alias_term.def_id); let impl_args = selcx.infcx.fresh_args_for_item(cause.span, impl_def_id); let mut impl_ty = tcx.type_of(impl_def_id).instantiate(tcx, impl_args); @@ -580,7 +585,7 @@ pub fn compute_inherent_assoc_ty_args<'a, 'b, 'tcx>( // Infer the generic parameters of the impl by unifying the // impl type with the self type of the projection. - let mut self_ty = alias_ty.self_ty(); + let mut self_ty = alias_term.self_ty(); if !selcx.infcx.next_trait_solver() { self_ty = normalize_with_depth_to( selcx, @@ -602,7 +607,7 @@ pub fn compute_inherent_assoc_ty_args<'a, 'b, 'tcx>( } } - alias_ty.rebase_inherent_args_onto_impl(impl_args, tcx) + alias_term.rebase_inherent_args_onto_impl(impl_args, tcx) } enum Projected<'tcx> { @@ -630,6 +635,7 @@ impl<'tcx> Progress<'tcx> { /// /// IMPORTANT: /// - `obligation` must be fully normalized +// FIXME(mgca): While this supports constants, it is only used for types by default right now #[instrument(level = "info", skip(selcx))] fn project<'cx, 'tcx>( selcx: &mut SelectionContext<'cx, 'tcx>, @@ -896,7 +902,7 @@ fn assemble_candidates_from_impls<'cx, 'tcx>( ImplSource::UserDefined(impl_data) => { // We have to be careful when projecting out of an // impl because of specialization. If we are not in - // codegen (i.e., projection mode is not "any"), and the + // codegen (i.e., `TypingMode` is not `PostAnalysis`), and the // impl's type is declared as default, then we disable // projection (even if the trait ref is fully // monomorphic). In the case where trait ref is not @@ -1189,6 +1195,7 @@ fn assemble_candidates_from_impls<'cx, 'tcx>( }); } +// FIXME(mgca): While this supports constants, it is only used for types by default right now fn confirm_candidate<'cx, 'tcx>( selcx: &mut SelectionContext<'cx, 'tcx>, obligation: &ProjectionTermObligation<'tcx>, @@ -1222,6 +1229,7 @@ fn confirm_candidate<'cx, 'tcx>( result } +// FIXME(mgca): While this supports constants, it is only used for types by default right now fn confirm_select_candidate<'cx, 'tcx>( selcx: &mut SelectionContext<'cx, 'tcx>, obligation: &ProjectionTermObligation<'tcx>, @@ -1873,6 +1881,7 @@ fn confirm_async_fn_kind_helper_candidate<'cx, 'tcx>( .with_addl_obligations(nested) } +// FIXME(mgca): While this supports constants, it is only used for types by default right now fn confirm_param_env_candidate<'cx, 'tcx>( selcx: &mut SelectionContext<'cx, 'tcx>, obligation: &ProjectionTermObligation<'tcx>, @@ -1926,9 +1935,7 @@ fn confirm_param_env_candidate<'cx, 'tcx>( ) { Ok(InferOk { value: _, obligations }) => { nested_obligations.extend(obligations); - assoc_ty_own_obligations(selcx, obligation, &mut nested_obligations); - // FIXME(associated_const_equality): Handle consts here as well? Maybe this progress type should just take - // a term instead. + assoc_term_own_obligations(selcx, obligation, &mut nested_obligations); Progress { term: cache_entry.term, obligations: nested_obligations } } Err(e) => { @@ -1942,6 +1949,7 @@ fn confirm_param_env_candidate<'cx, 'tcx>( } } +// FIXME(mgca): While this supports constants, it is only used for types by default right now fn confirm_impl_candidate<'cx, 'tcx>( selcx: &mut SelectionContext<'cx, 'tcx>, obligation: &ProjectionTermObligation<'tcx>, @@ -1955,8 +1963,8 @@ fn confirm_impl_candidate<'cx, 'tcx>( let trait_def_id = tcx.trait_id_of_impl(impl_def_id).unwrap(); let param_env = obligation.param_env; - let assoc_ty = match specialization_graph::assoc_def(tcx, impl_def_id, assoc_item_id) { - Ok(assoc_ty) => assoc_ty, + let assoc_term = match specialization_graph::assoc_def(tcx, impl_def_id, assoc_item_id) { + Ok(assoc_term) => assoc_term, Err(guar) => return Ok(Projected::Progress(Progress::error(tcx, guar))), }; @@ -1965,10 +1973,10 @@ fn confirm_impl_candidate<'cx, 'tcx>( // has impossible-to-satisfy predicates (since those were // allowed in ), // or because the impl is literally missing the definition. - if !assoc_ty.item.defaultness(tcx).has_value() { + if !assoc_term.item.defaultness(tcx).has_value() { debug!( "confirm_impl_candidate: no associated type {:?} for {:?}", - assoc_ty.item.name(), + assoc_term.item.name(), obligation.predicate ); if tcx.impl_self_is_guaranteed_unsized(impl_def_id) { @@ -1979,7 +1987,11 @@ fn confirm_impl_candidate<'cx, 'tcx>( return Ok(Projected::NoProgress(obligation.predicate.to_term(tcx))); } else { return Ok(Projected::Progress(Progress { - term: Ty::new_misc_error(tcx).into(), + term: if obligation.predicate.kind(tcx).is_type() { + Ty::new_misc_error(tcx).into() + } else { + ty::Const::new_misc_error(tcx).into() + }, obligations: nested, })); } @@ -1992,27 +2004,32 @@ fn confirm_impl_candidate<'cx, 'tcx>( // * `args` is `[u32]` // * `args` ends up as `[u32, S]` let args = obligation.predicate.args.rebase_onto(tcx, trait_def_id, args); - let args = translate_args(selcx.infcx, param_env, impl_def_id, args, assoc_ty.defining_node); - let is_const = matches!(tcx.def_kind(assoc_ty.item.def_id), DefKind::AssocConst); - - let term: ty::EarlyBinder<'tcx, ty::Term<'tcx>> = if is_const { - let did = assoc_ty.item.def_id; - let identity_args = crate::traits::GenericArgs::identity_for_item(tcx, did); - let uv = ty::UnevaluatedConst::new(did, identity_args); - ty::EarlyBinder::bind(ty::Const::new_unevaluated(tcx, uv).into()) + let args = translate_args(selcx.infcx, param_env, impl_def_id, args, assoc_term.defining_node); + + let term = if obligation.predicate.kind(tcx).is_type() { + tcx.type_of(assoc_term.item.def_id).map_bound(|ty| ty.into()) } else { - tcx.type_of(assoc_ty.item.def_id).map_bound(|ty| ty.into()) + ty::EarlyBinder::bind( + get_associated_const_value( + selcx, + obligation.predicate.to_term(tcx).expect_const(), + param_env, + ) + .into(), + ) }; - let progress = if !tcx.check_args_compatible(assoc_ty.item.def_id, args) { - let err = Ty::new_error_with_message( - tcx, - obligation.cause.span, - "impl item and trait item have different parameters", - ); - Progress { term: err.into(), obligations: nested } + let progress = if !tcx.check_args_compatible(assoc_term.item.def_id, args) { + let msg = "impl item and trait item have different parameters"; + let span = obligation.cause.span; + let err = if obligation.predicate.kind(tcx).is_type() { + Ty::new_error_with_message(tcx, span, msg).into() + } else { + ty::Const::new_error_with_message(tcx, span, msg).into() + }; + Progress { term: err, obligations: nested } } else { - assoc_ty_own_obligations(selcx, obligation, &mut nested); + assoc_term_own_obligations(selcx, obligation, &mut nested); Progress { term: term.instantiate(tcx, args), obligations: nested } }; Ok(Projected::Progress(progress)) @@ -2020,7 +2037,8 @@ fn confirm_impl_candidate<'cx, 'tcx>( // Get obligations corresponding to the predicates from the where-clause of the // associated type itself. -fn assoc_ty_own_obligations<'cx, 'tcx>( +// FIXME(mgca): While this supports constants, it is only used for types by default right now +fn assoc_term_own_obligations<'cx, 'tcx>( selcx: &mut SelectionContext<'cx, 'tcx>, obligation: &ProjectionTermObligation<'tcx>, nested: &mut PredicateObligations<'tcx>, @@ -2090,3 +2108,15 @@ impl<'cx, 'tcx> ProjectionCacheKeyExt<'cx, 'tcx> for ProjectionCacheKey<'tcx> { }) } } + +fn get_associated_const_value<'tcx>( + selcx: &mut SelectionContext<'_, 'tcx>, + alias_ct: ty::Const<'tcx>, + param_env: ty::ParamEnv<'tcx>, +) -> ty::Const<'tcx> { + // FIXME(mgca): We shouldn't be invoking ctfe here, instead const items should be aliases to type + // system consts that we can retrieve with some `query const_arg_of_alias` query. Evaluating the + // constant is "close enough" to getting the actual rhs of the const item for now even if it might + // lead to some cycles + super::evaluate_const(selcx.infcx, alias_ct, param_env) +} diff --git a/compiler/rustc_trait_selection/src/traits/select/confirmation.rs b/compiler/rustc_trait_selection/src/traits/select/confirmation.rs index 8008c7e4d342b..94190cd3ae33a 100644 --- a/compiler/rustc_trait_selection/src/traits/select/confirmation.rs +++ b/compiler/rustc_trait_selection/src/traits/select/confirmation.rs @@ -406,7 +406,6 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> { let predicate = self.infcx.enter_forall_and_leak_universe(obligation.predicate); let mut assume = predicate.trait_ref.args.const_at(2); - // FIXME(mgca): We should shallowly normalize this. if self.tcx().features().generic_const_exprs() { assume = crate::traits::evaluate_const(self.infcx, assume, obligation.param_env) } diff --git a/compiler/rustc_trait_selection/src/traits/wf.rs b/compiler/rustc_trait_selection/src/traits/wf.rs index 2e32cda7602e4..08d3b92e9b5ef 100644 --- a/compiler/rustc_trait_selection/src/traits/wf.rs +++ b/compiler/rustc_trait_selection/src/traits/wf.rs @@ -6,6 +6,7 @@ use std::iter; use rustc_hir as hir; +use rustc_hir::def::DefKind; use rustc_hir::lang_items::LangItem; use rustc_infer::traits::{ObligationCauseCode, PredicateObligations}; use rustc_middle::bug; @@ -486,7 +487,7 @@ impl<'a, 'tcx> WfPredicates<'a, 'tcx> { /// Pushes the obligations required for an inherent alias to be WF /// into `self.out`. // FIXME(inherent_associated_types): Merge this function with `fn compute_alias`. - fn add_wf_preds_for_inherent_projection(&mut self, data: ty::AliasTy<'tcx>) { + fn add_wf_preds_for_inherent_projection(&mut self, data: ty::AliasTerm<'tcx>) { // An inherent projection is well-formed if // // (a) its predicates hold (*) @@ -498,7 +499,7 @@ impl<'a, 'tcx> WfPredicates<'a, 'tcx> { if !data.self_ty().has_escaping_bound_vars() { // FIXME(inherent_associated_types): Should this happen inside of a snapshot? // FIXME(inherent_associated_types): This is incompatible with the new solver and lazy norm! - let args = traits::project::compute_inherent_assoc_ty_args( + let args = traits::project::compute_inherent_assoc_term_args( &mut traits::SelectionContext::new(self.infcx), self.param_env, data, @@ -776,7 +777,7 @@ impl<'a, 'tcx> TypeVisitor> for WfPredicates<'a, 'tcx> { self.out.extend(obligations); } ty::Alias(ty::Inherent, data) => { - self.add_wf_preds_for_inherent_projection(data); + self.add_wf_preds_for_inherent_projection(data.into()); return; // Subtree handled by compute_inherent_projection. } @@ -961,9 +962,6 @@ impl<'a, 'tcx> TypeVisitor> for WfPredicates<'a, 'tcx> { match c.kind() { ty::ConstKind::Unevaluated(uv) => { if !c.has_escaping_bound_vars() { - let obligations = self.nominal_obligations(uv.def, uv.args); - self.out.extend(obligations); - let predicate = ty::Binder::dummy(ty::PredicateKind::Clause( ty::ClauseKind::ConstEvaluatable(c), )); @@ -975,6 +973,16 @@ impl<'a, 'tcx> TypeVisitor> for WfPredicates<'a, 'tcx> { self.param_env, predicate, )); + + if tcx.def_kind(uv.def) == DefKind::AssocConst + && tcx.def_kind(tcx.parent(uv.def)) == (DefKind::Impl { of_trait: false }) + { + self.add_wf_preds_for_inherent_projection(uv.into()); + return; // Subtree is handled by above function + } else { + let obligations = self.nominal_obligations(uv.def, uv.args); + self.out.extend(obligations); + } } } ty::ConstKind::Infer(_) => { diff --git a/compiler/rustc_traits/src/normalize_projection_ty.rs b/compiler/rustc_traits/src/normalize_projection_ty.rs index 14a92ebb9f966..e52898cc6e242 100644 --- a/compiler/rustc_traits/src/normalize_projection_ty.rs +++ b/compiler/rustc_traits/src/normalize_projection_ty.rs @@ -32,8 +32,14 @@ fn normalize_canonicalized_projection_ty<'tcx>( let selcx = &mut SelectionContext::new(ocx.infcx); let cause = ObligationCause::dummy(); let mut obligations = PredicateObligations::new(); - let answer = - traits::normalize_projection_ty(selcx, param_env, goal, cause, 0, &mut obligations); + let answer = traits::normalize_projection_term( + selcx, + param_env, + goal.into(), + cause, + 0, + &mut obligations, + ); ocx.register_obligations(obligations); // #112047: With projections and opaques, we are able to create opaques that // are recursive (given some generic parameters of the opaque's type variables). @@ -104,14 +110,14 @@ fn normalize_canonicalized_inherent_projection_ty<'tcx>( let answer = traits::normalize_inherent_projection( selcx, param_env, - goal, + goal.into(), cause, 0, &mut obligations, ); ocx.register_obligations(obligations); - Ok(NormalizationResult { normalized_ty: answer }) + Ok(NormalizationResult { normalized_ty: answer.expect_type() }) }, ) } diff --git a/compiler/rustc_type_ir/src/predicate.rs b/compiler/rustc_type_ir/src/predicate.rs index 0411c5c2325eb..b59495b93c836 100644 --- a/compiler/rustc_type_ir/src/predicate.rs +++ b/compiler/rustc_type_ir/src/predicate.rs @@ -474,10 +474,15 @@ pub enum AliasTermKind { /// Currently only used if the type alias references opaque types. /// Can always be normalized away. FreeTy, - /// An unevaluated const coming from a generic const expression. + + /// An unevaluated anonymous constants. UnevaluatedConst, /// An unevaluated const coming from an associated const. ProjectionConst, + /// A top level const item not part of a trait or impl. + FreeConst, + /// An associated const in an inherent `impl` + InherentConst, } impl AliasTermKind { @@ -486,11 +491,27 @@ impl AliasTermKind { AliasTermKind::ProjectionTy => "associated type", AliasTermKind::ProjectionConst => "associated const", AliasTermKind::InherentTy => "inherent associated type", + AliasTermKind::InherentConst => "inherent associated const", AliasTermKind::OpaqueTy => "opaque type", AliasTermKind::FreeTy => "type alias", + AliasTermKind::FreeConst => "unevaluated constant", AliasTermKind::UnevaluatedConst => "unevaluated constant", } } + + pub fn is_type(self) -> bool { + match self { + AliasTermKind::ProjectionTy + | AliasTermKind::InherentTy + | AliasTermKind::OpaqueTy + | AliasTermKind::FreeTy => true, + + AliasTermKind::UnevaluatedConst + | AliasTermKind::ProjectionConst + | AliasTermKind::InherentConst + | AliasTermKind::FreeConst => false, + } + } } impl From for AliasTermKind { @@ -566,7 +587,10 @@ impl AliasTerm { | AliasTermKind::InherentTy | AliasTermKind::OpaqueTy | AliasTermKind::FreeTy => {} - AliasTermKind::UnevaluatedConst | AliasTermKind::ProjectionConst => { + AliasTermKind::InherentConst + | AliasTermKind::FreeConst + | AliasTermKind::UnevaluatedConst + | AliasTermKind::ProjectionConst => { panic!("Cannot turn `UnevaluatedConst` into `AliasTy`") } } @@ -603,18 +627,19 @@ impl AliasTerm { ty::AliasTy { def_id: self.def_id, args: self.args, _use_alias_ty_new_instead: () }, ) .into(), - AliasTermKind::UnevaluatedConst | AliasTermKind::ProjectionConst => { - I::Const::new_unevaluated( - interner, - ty::UnevaluatedConst::new(self.def_id, self.args), - ) - .into() - } + AliasTermKind::FreeConst + | AliasTermKind::InherentConst + | AliasTermKind::UnevaluatedConst + | AliasTermKind::ProjectionConst => I::Const::new_unevaluated( + interner, + ty::UnevaluatedConst::new(self.def_id, self.args), + ) + .into(), } } } -/// The following methods work only with (trait) associated type projections. +/// The following methods work only with (trait) associated term projections. impl AliasTerm { pub fn self_ty(self) -> I::Ty { self.args.type_at(0) @@ -659,6 +684,31 @@ impl AliasTerm { } } +/// The following methods work only with inherent associated term projections. +impl AliasTerm { + /// Transform the generic parameters to have the given `impl` args as the base and the GAT args on top of that. + /// + /// Does the following transformation: + /// + /// ```text + /// [Self, P_0...P_m] -> [I_0...I_n, P_0...P_m] + /// + /// I_i impl args + /// P_j GAT args + /// ``` + pub fn rebase_inherent_args_onto_impl( + self, + impl_args: I::GenericArgs, + interner: I, + ) -> I::GenericArgs { + debug_assert!(matches!( + self.kind(interner), + AliasTermKind::InherentTy | AliasTermKind::InherentConst + )); + interner.mk_args_from_iter(impl_args.iter().chain(self.args.iter().skip(1))) + } +} + impl From> for AliasTerm { fn from(ty: ty::AliasTy) -> Self { AliasTerm { args: ty.args, def_id: ty.def_id, _use_alias_term_new_instead: () } diff --git a/compiler/rustc_type_ir/src/relate.rs b/compiler/rustc_type_ir/src/relate.rs index c80a567117c66..e3c4a793b37f6 100644 --- a/compiler/rustc_type_ir/src/relate.rs +++ b/compiler/rustc_type_ir/src/relate.rs @@ -273,8 +273,10 @@ impl Relate for ty::AliasTerm { false, // do not fetch `type_of(a_def_id)`, as it will cause a cycle )?, ty::AliasTermKind::ProjectionTy + | ty::AliasTermKind::FreeConst | ty::AliasTermKind::FreeTy | ty::AliasTermKind::InherentTy + | ty::AliasTermKind::InherentConst | ty::AliasTermKind::UnevaluatedConst | ty::AliasTermKind::ProjectionConst => { relate_args_invariantly(relation, a.args, b.args)? diff --git a/compiler/rustc_type_ir/src/ty_kind.rs b/compiler/rustc_type_ir/src/ty_kind.rs index 21adbffc02743..cf2e4284d10da 100644 --- a/compiler/rustc_type_ir/src/ty_kind.rs +++ b/compiler/rustc_type_ir/src/ty_kind.rs @@ -514,28 +514,6 @@ impl AliasTy { } } -/// The following methods work only with inherent associated type projections. -impl AliasTy { - /// Transform the generic parameters to have the given `impl` args as the base and the GAT args on top of that. - /// - /// Does the following transformation: - /// - /// ```text - /// [Self, P_0...P_m] -> [I_0...I_n, P_0...P_m] - /// - /// I_i impl args - /// P_j GAT args - /// ``` - pub fn rebase_inherent_args_onto_impl( - self, - impl_args: I::GenericArgs, - interner: I, - ) -> I::GenericArgs { - debug_assert_eq!(self.kind(interner), AliasTyKind::Inherent); - interner.mk_args_from_iter(impl_args.iter().chain(self.args.iter().skip(1))) - } -} - #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)] #[cfg_attr( feature = "nightly", diff --git a/tests/ui/const-generics/generic_const_exprs/cross_crate_predicate.stderr b/tests/ui/const-generics/generic_const_exprs/cross_crate_predicate.stderr index a05aaf2af649e..1aac357d60e43 100644 --- a/tests/ui/const-generics/generic_const_exprs/cross_crate_predicate.stderr +++ b/tests/ui/const-generics/generic_const_exprs/cross_crate_predicate.stderr @@ -39,14 +39,6 @@ error: unconstrained generic constant LL | let _ = const_evaluatable_lib::test1::(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | -note: required by a bound in `test1` - --> $DIR/auxiliary/const_evaluatable_lib.rs:5:10 - | -LL | pub fn test1() -> [u8; std::mem::size_of::() - 1] - | ----- required by a bound in this function -LL | where -LL | [u8; std::mem::size_of::() - 1]: Sized, - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `test1` help: try adding a `where` bound | LL | fn user() where [(); std::mem::size_of::() - 1]: { @@ -59,10 +51,13 @@ LL | let _ = const_evaluatable_lib::test1::(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: required by a bound in `test1` - --> $DIR/auxiliary/const_evaluatable_lib.rs:3:27 + --> $DIR/auxiliary/const_evaluatable_lib.rs:5:10 | LL | pub fn test1() -> [u8; std::mem::size_of::() - 1] - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `test1` + | ----- required by a bound in this function +LL | where +LL | [u8; std::mem::size_of::() - 1]: Sized, + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `test1` help: try adding a `where` bound | LL | fn user() where [(); std::mem::size_of::() - 1]: { From 9ec8373ab6beaf06425c5caa0fb783e767cdc6ad Mon Sep 17 00:00:00 2001 From: Boxy Date: Thu, 1 May 2025 17:12:40 +0100 Subject: [PATCH 84/90] Crashes tests --- tests/crashes/127643.rs | 22 +++++++++++----------- tests/crashes/133066.rs | 12 ------------ 2 files changed, 11 insertions(+), 23 deletions(-) delete mode 100644 tests/crashes/133066.rs diff --git a/tests/crashes/127643.rs b/tests/crashes/127643.rs index a4db9397bdefa..b5ec58b70e936 100644 --- a/tests/crashes/127643.rs +++ b/tests/crashes/127643.rs @@ -1,18 +1,18 @@ //@ known-bug: #127643 -#![feature(associated_const_equality)] +#![feature(generic_const_items, associated_const_equality)] +#![expect(incomplete_features)] -fn user() -> impl Owner {} - -trait Owner { - const C: K; -} -impl Owner for () { - const C: K = K::DEFAULT; +trait Foo { + const ASSOC: u32; } -trait ConstDefault { - const DEFAULT: Self; +impl Foo for () { + const ASSOC: u32 = N; } -fn main() {} +fn bar = { N }>>() {} + +fn main() { + bar::<10_u64, ()>(); +} diff --git a/tests/crashes/133066.rs b/tests/crashes/133066.rs deleted file mode 100644 index 732ebb7079fd0..0000000000000 --- a/tests/crashes/133066.rs +++ /dev/null @@ -1,12 +0,0 @@ -//@ known-bug: #133066 -trait Owner { - const C: u32; -} - -impl Owner for () {;} - -fn take0(_: impl Owner = { N }>) {} - -fn main() { - take0::(()); -} From 175f71750f149643cff56f88b6f7e63c88843dea Mon Sep 17 00:00:00 2001 From: Artur Roos Date: Thu, 1 May 2025 22:09:07 +0300 Subject: [PATCH 85/90] Simplify docs for breaking out of a named code block --- library/std/src/keyword_docs.rs | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/library/std/src/keyword_docs.rs b/library/std/src/keyword_docs.rs index b0e55c787250d..71b68233f7881 100644 --- a/library/std/src/keyword_docs.rs +++ b/library/std/src/keyword_docs.rs @@ -91,7 +91,7 @@ mod as_keyword {} /// /// When associated with `loop`, a break expression may be used to return a value from that loop. /// This is only valid with `loop` and not with any other type of loop. -/// If no value is specified, `break;` returns `()`. +/// If no value is specified for `break;` it returns `()`. /// Every `break` within a loop must return the same type. /// /// ```rust @@ -110,7 +110,7 @@ mod as_keyword {} /// ``` /// /// It is also possible to exit from any *labelled* block returning the value early. -/// If no value specified `break;` returns `()`. +/// If no value is specified for `break;` it returns `()`. /// /// ```rust /// let inputs = vec!["Cow", "Cat", "Dog", "Snake", "Cod"]; From 17d74d63208c9ac1dbbe2462edad667fbeb9469a Mon Sep 17 00:00:00 2001 From: Eyal Kalderon Date: Thu, 1 May 2025 15:13:43 -0400 Subject: [PATCH 86/90] Use present indicative tense in std::io::pipe() API docs The inline documentation for all other free functions in the `std::io` module use the phrase "creates a" instead of "create a", except for the currently nightly-only `std::io::pipe()` function. This commit updates the text to align with the predominant wording in the `std::io` module. I recognize this PR is quite a minuscule nitpick, so feel free to ignore and close if you disagree and/or there are bigger fish to fry. :smile: --- library/std/src/io/pipe.rs | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/library/std/src/io/pipe.rs b/library/std/src/io/pipe.rs index c6b7b49a351e4..47243806cd2d9 100644 --- a/library/std/src/io/pipe.rs +++ b/library/std/src/io/pipe.rs @@ -2,7 +2,7 @@ use crate::io; use crate::sys::anonymous_pipe::{AnonPipe, pipe as pipe_inner}; use crate::sys_common::{FromInner, IntoInner}; -/// Create an anonymous pipe. +/// Creates an anonymous pipe. /// /// # Behavior /// @@ -108,7 +108,7 @@ impl IntoInner for PipeWriter { } impl PipeReader { - /// Create a new [`PipeReader`] instance that shares the same underlying file description. + /// Creates a new [`PipeReader`] instance that shares the same underlying file description. /// /// # Examples /// @@ -167,7 +167,7 @@ impl PipeReader { } impl PipeWriter { - /// Create a new [`PipeWriter`] instance that shares the same underlying file description. + /// Creates a new [`PipeWriter`] instance that shares the same underlying file description. /// /// # Examples /// From 7b25d4a99edc12909dc73c31cb6a44238c4b9bf9 Mon Sep 17 00:00:00 2001 From: onur-ozkan Date: Thu, 1 May 2025 19:17:56 +0000 Subject: [PATCH 87/90] extend the list of registered dylibs on `test::prepare_cargo_test` Signed-off-by: onur-ozkan --- src/bootstrap/src/core/build_steps/test.rs | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/src/bootstrap/src/core/build_steps/test.rs b/src/bootstrap/src/core/build_steps/test.rs index d4fccc535a6b0..a7a3b5a878c31 100644 --- a/src/bootstrap/src/core/build_steps/test.rs +++ b/src/bootstrap/src/core/build_steps/test.rs @@ -2556,9 +2556,9 @@ fn prepare_cargo_test( // We skip everything on Miri as then this overwrites the libdir set up // by `Cargo::new` and that actually makes things go wrong. if builder.kind != Kind::Miri { - let mut dylib_path = dylib_path(); - dylib_path.insert(0, PathBuf::from(&*builder.sysroot_target_libdir(compiler, target))); - cargo.env(dylib_path_var(), env::join_paths(&dylib_path).unwrap()); + let mut dylib_paths = builder.rustc_lib_paths(compiler); + dylib_paths.push(PathBuf::from(&builder.sysroot_target_libdir(compiler, target))); + helpers::add_dylib_path(dylib_paths, &mut cargo); } if builder.remote_tested(target) { From b2bf951dd60a57b423ab0a3f6b544ff580a08cd1 Mon Sep 17 00:00:00 2001 From: Nicholas Nethercote Date: Fri, 28 Mar 2025 16:44:39 +1100 Subject: [PATCH 88/90] Augment `impl-trait-missing-lifetime-gated.rs`. We have coverage for `Foo` and `Foo` but not for `Foo<>`. This commit adds it. Note that the output has bogus syntax: `impl Foo'a, >` --- .../impl-trait-missing-lifetime-gated.rs | 11 ++++ .../impl-trait-missing-lifetime-gated.stderr | 59 +++++++++++++++++-- 2 files changed, 65 insertions(+), 5 deletions(-) diff --git a/tests/ui/suggestions/impl-trait-missing-lifetime-gated.rs b/tests/ui/suggestions/impl-trait-missing-lifetime-gated.rs index 443a7e3835e3e..f5c3da847c72f 100644 --- a/tests/ui/suggestions/impl-trait-missing-lifetime-gated.rs +++ b/tests/ui/suggestions/impl-trait-missing-lifetime-gated.rs @@ -49,6 +49,17 @@ mod alone_in_path { //~| ERROR missing lifetime specifier } +mod alone_in_path2 { + trait Foo<'a> { fn next(&mut self) -> Option<&'a ()>; } + + fn f(_: impl Foo<>) {} + //~^ ERROR anonymous lifetimes in `impl Trait` are unstable + + fn g(mut x: impl Foo<>) -> Option<&()> { x.next() } + //~^ ERROR anonymous lifetimes in `impl Trait` are unstable + //~| ERROR missing lifetime specifier +} + mod in_path { trait Foo<'a, T> { fn next(&mut self) -> Option<&'a T>; } diff --git a/tests/ui/suggestions/impl-trait-missing-lifetime-gated.stderr b/tests/ui/suggestions/impl-trait-missing-lifetime-gated.stderr index 24013c85c8758..e7dbb06987a91 100644 --- a/tests/ui/suggestions/impl-trait-missing-lifetime-gated.stderr +++ b/tests/ui/suggestions/impl-trait-missing-lifetime-gated.stderr @@ -108,7 +108,28 @@ LL + fn g(mut x: impl Foo) -> Option<()> { x.next() } | error[E0106]: missing lifetime specifier - --> $DIR/impl-trait-missing-lifetime-gated.rs:58:41 + --> $DIR/impl-trait-missing-lifetime-gated.rs:58:39 + | +LL | fn g(mut x: impl Foo<>) -> Option<&()> { x.next() } + | ^ expected named lifetime parameter + | + = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from +help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static` + | +LL | fn g(mut x: impl Foo<>) -> Option<&'static ()> { x.next() } + | +++++++ +help: consider introducing a named lifetime parameter + | +LL | fn g<'a>(mut x: impl Foo<>) -> Option<&'a ()> { x.next() } + | ++++ ++ +help: alternatively, you might want to return an owned value + | +LL - fn g(mut x: impl Foo<>) -> Option<&()> { x.next() } +LL + fn g(mut x: impl Foo<>) -> Option<()> { x.next() } + | + +error[E0106]: missing lifetime specifier + --> $DIR/impl-trait-missing-lifetime-gated.rs:69:41 | LL | fn g(mut x: impl Foo<()>) -> Option<&()> { x.next() } | ^ expected named lifetime parameter @@ -129,7 +150,7 @@ LL + fn g(mut x: impl Foo<()>) -> Option<()> { x.next() } | warning: elided lifetime has a name - --> $DIR/impl-trait-missing-lifetime-gated.rs:64:57 + --> $DIR/impl-trait-missing-lifetime-gated.rs:75:57 | LL | fn resolved_anonymous<'a, T: 'a>(f: impl Fn(&'a str) -> &T) { | -- lifetime `'a` declared here ^ this elided lifetime gets resolved as `'a` @@ -217,7 +238,35 @@ LL | fn g<'a>(mut x: impl Foo<'a>) -> Option<&()> { x.next() } | ++++ ++++ error[E0658]: anonymous lifetimes in `impl Trait` are unstable - --> $DIR/impl-trait-missing-lifetime-gated.rs:55:22 + --> $DIR/impl-trait-missing-lifetime-gated.rs:55:21 + | +LL | fn f(_: impl Foo<>) {} + | ^ expected named lifetime parameter + | + = help: add `#![feature(anonymous_lifetime_in_impl_trait)]` to the crate attributes to enable + = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date +help: consider introducing a named lifetime parameter + | +LL - fn f(_: impl Foo<>) {} +LL + fn f<'a>(_: impl Foo'a, >) {} + | + +error[E0658]: anonymous lifetimes in `impl Trait` are unstable + --> $DIR/impl-trait-missing-lifetime-gated.rs:58:25 + | +LL | fn g(mut x: impl Foo<>) -> Option<&()> { x.next() } + | ^ expected named lifetime parameter + | + = help: add `#![feature(anonymous_lifetime_in_impl_trait)]` to the crate attributes to enable + = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date +help: consider introducing a named lifetime parameter + | +LL - fn g(mut x: impl Foo<>) -> Option<&()> { x.next() } +LL + fn g<'a>(mut x: impl Foo'a, >) -> Option<&()> { x.next() } + | + +error[E0658]: anonymous lifetimes in `impl Trait` are unstable + --> $DIR/impl-trait-missing-lifetime-gated.rs:66:22 | LL | fn f(_: impl Foo<()>) {} | ^ expected named lifetime parameter @@ -230,7 +279,7 @@ LL | fn f<'a>(_: impl Foo<'a, ()>) {} | ++++ +++ error[E0658]: anonymous lifetimes in `impl Trait` are unstable - --> $DIR/impl-trait-missing-lifetime-gated.rs:58:26 + --> $DIR/impl-trait-missing-lifetime-gated.rs:69:26 | LL | fn g(mut x: impl Foo<()>) -> Option<&()> { x.next() } | ^ expected named lifetime parameter @@ -242,7 +291,7 @@ help: consider introducing a named lifetime parameter LL | fn g<'a>(mut x: impl Foo<'a, ()>) -> Option<&()> { x.next() } | ++++ +++ -error: aborting due to 14 previous errors; 1 warning emitted +error: aborting due to 17 previous errors; 1 warning emitted Some errors have detailed explanations: E0106, E0658. For more information about an error, try `rustc --explain E0106`. From d42edee451b87ce3d7b9de82f43c142592e1e661 Mon Sep 17 00:00:00 2001 From: Nicholas Nethercote Date: Mon, 28 Apr 2025 19:24:45 +1000 Subject: [PATCH 89/90] Handle `Path<>` better in error messages. `Path<>` needs to be distinguished from `Path`. This commit does that, improving some error messages. --- compiler/rustc_ast_lowering/src/lib.rs | 10 +++---- compiler/rustc_ast_lowering/src/path.rs | 30 +++++++++++-------- compiler/rustc_hir/src/hir.rs | 29 ++++++++++++------ .../impl-trait-missing-lifetime-gated.stderr | 18 +++++------ 4 files changed, 50 insertions(+), 37 deletions(-) diff --git a/compiler/rustc_ast_lowering/src/lib.rs b/compiler/rustc_ast_lowering/src/lib.rs index 1e14b4d6723f4..1844cb2de6c45 100644 --- a/compiler/rustc_ast_lowering/src/lib.rs +++ b/compiler/rustc_ast_lowering/src/lib.rs @@ -54,8 +54,8 @@ use rustc_errors::{DiagArgFromDisplay, DiagCtxtHandle, StashKey}; use rustc_hir::def::{DefKind, LifetimeRes, Namespace, PartialRes, PerNS, Res}; use rustc_hir::def_id::{CRATE_DEF_ID, LOCAL_CRATE, LocalDefId}; use rustc_hir::{ - self as hir, ConstArg, GenericArg, HirId, ItemLocalMap, LangItem, LifetimeSource, - LifetimeSyntax, ParamName, TraitCandidate, + self as hir, AngleBrackets, ConstArg, GenericArg, HirId, ItemLocalMap, LangItem, + LifetimeSource, LifetimeSyntax, ParamName, TraitCandidate, }; use rustc_index::{Idx, IndexSlice, IndexVec}; use rustc_macros::extension; @@ -1081,7 +1081,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> { match arg { ast::GenericArg::Lifetime(lt) => GenericArg::Lifetime(self.lower_lifetime( lt, - LifetimeSource::Path { with_angle_brackets: true }, + LifetimeSource::Path { angle_brackets: hir::AngleBrackets::Full }, lt.ident.into(), )), ast::GenericArg::Type(ty) => { @@ -1773,13 +1773,13 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> { &mut self, id: NodeId, span: Span, - with_angle_brackets: bool, + angle_brackets: AngleBrackets, ) -> &'hir hir::Lifetime { self.new_named_lifetime( id, id, Ident::new(kw::UnderscoreLifetime, span), - LifetimeSource::Path { with_angle_brackets }, + LifetimeSource::Path { angle_brackets }, LifetimeSyntax::Hidden, ) } diff --git a/compiler/rustc_ast_lowering/src/path.rs b/compiler/rustc_ast_lowering/src/path.rs index fabe40a9d0413..5cda64ce7b4ba 100644 --- a/compiler/rustc_ast_lowering/src/path.rs +++ b/compiler/rustc_ast_lowering/src/path.rs @@ -432,27 +432,31 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> { // Note: these spans are used for diagnostics when they can't be inferred. // See rustc_resolve::late::lifetimes::LifetimeContext::add_missing_lifetime_specifiers_label - let (elided_lifetime_span, with_angle_brackets) = if generic_args.span.is_empty() { - // If there are no brackets, use the identifier span. + let (elided_lifetime_span, angle_brackets) = if generic_args.span.is_empty() { + // No brackets, e.g. `Path`: use an empty span just past the end of the identifier. // HACK: we use find_ancestor_inside to properly suggest elided spans in paths // originating from macros, since the segment's span might be from a macro arg. - (segment_ident_span.find_ancestor_inside(path_span).unwrap_or(path_span), false) - } else if generic_args.is_empty() { - // If there are brackets, but not generic arguments, then use the opening bracket - (generic_args.span.with_hi(generic_args.span.lo() + BytePos(1)), true) + ( + segment_ident_span.find_ancestor_inside(path_span).unwrap_or(path_span), + hir::AngleBrackets::Missing, + ) } else { - // Else use an empty span right after the opening bracket. - (generic_args.span.with_lo(generic_args.span.lo() + BytePos(1)).shrink_to_lo(), true) + // Brackets, e.g. `Path<>` or `Path`: use an empty span just after the `<`. + ( + generic_args.span.with_lo(generic_args.span.lo() + BytePos(1)).shrink_to_lo(), + if generic_args.is_empty() { + hir::AngleBrackets::Empty + } else { + hir::AngleBrackets::Full + }, + ) }; generic_args.args.insert_many( 0, (start..end).map(|id| { - let l = self.lower_lifetime_hidden_in_path( - id, - elided_lifetime_span, - with_angle_brackets, - ); + let l = + self.lower_lifetime_hidden_in_path(id, elided_lifetime_span, angle_brackets); GenericArg::Lifetime(l) }), ); diff --git a/compiler/rustc_hir/src/hir.rs b/compiler/rustc_hir/src/hir.rs index af587ee5bdcdd..58b776bdc6aea 100644 --- a/compiler/rustc_hir/src/hir.rs +++ b/compiler/rustc_hir/src/hir.rs @@ -35,18 +35,24 @@ use crate::def_id::{DefId, LocalDefIdMap}; pub(crate) use crate::hir_id::{HirId, ItemLocalId, ItemLocalMap, OwnerId}; use crate::intravisit::{FnKind, VisitorExt}; +#[derive(Debug, Copy, Clone, PartialEq, Eq, HashStable_Generic)] +pub enum AngleBrackets { + /// E.g. `Path`. + Missing, + /// E.g. `Path<>`. + Empty, + /// E.g. `Path`. + Full, +} + #[derive(Debug, Copy, Clone, PartialEq, Eq, HashStable_Generic)] pub enum LifetimeSource { /// E.g. `&Type`, `&'_ Type`, `&'a Type`, `&mut Type`, `&'_ mut Type`, `&'a mut Type` Reference, - /// E.g. `ContainsLifetime`, `ContainsLifetime<'_>`, `ContainsLifetime<'a>` - Path { - /// - true for `ContainsLifetime<'_>`, `ContainsLifetime<'a>`, - /// `ContainsLifetime<'_, T>`, `ContainsLifetime<'a, T>` - /// - false for `ContainsLifetime` - with_angle_brackets: bool, - }, + /// E.g. `ContainsLifetime`, `ContainsLifetime<>`, `ContainsLifetime<'_>`, + /// `ContainsLifetime<'a>` + Path { angle_brackets: AngleBrackets }, /// E.g. `impl Trait + '_`, `impl Trait + 'a` OutlivesBound, @@ -304,12 +310,17 @@ impl Lifetime { (Named | Anonymous, _) => (self.ident.span, format!("{new_lifetime}")), // The user wrote `Path`, and omitted the `'_,`. - (Hidden, Path { with_angle_brackets: true }) => { + (Hidden, Path { angle_brackets: AngleBrackets::Full }) => { (self.ident.span, format!("{new_lifetime}, ")) } + // The user wrote `Path<>`, and omitted the `'_`.. + (Hidden, Path { angle_brackets: AngleBrackets::Empty }) => { + (self.ident.span, format!("{new_lifetime}")) + } + // The user wrote `Path` and omitted the `<'_>`. - (Hidden, Path { with_angle_brackets: false }) => { + (Hidden, Path { angle_brackets: AngleBrackets::Missing }) => { (self.ident.span.shrink_to_hi(), format!("<{new_lifetime}>")) } diff --git a/tests/ui/suggestions/impl-trait-missing-lifetime-gated.stderr b/tests/ui/suggestions/impl-trait-missing-lifetime-gated.stderr index e7dbb06987a91..92996ca846782 100644 --- a/tests/ui/suggestions/impl-trait-missing-lifetime-gated.stderr +++ b/tests/ui/suggestions/impl-trait-missing-lifetime-gated.stderr @@ -238,32 +238,30 @@ LL | fn g<'a>(mut x: impl Foo<'a>) -> Option<&()> { x.next() } | ++++ ++++ error[E0658]: anonymous lifetimes in `impl Trait` are unstable - --> $DIR/impl-trait-missing-lifetime-gated.rs:55:21 + --> $DIR/impl-trait-missing-lifetime-gated.rs:55:22 | LL | fn f(_: impl Foo<>) {} - | ^ expected named lifetime parameter + | ^ expected named lifetime parameter | = help: add `#![feature(anonymous_lifetime_in_impl_trait)]` to the crate attributes to enable = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date help: consider introducing a named lifetime parameter | -LL - fn f(_: impl Foo<>) {} -LL + fn f<'a>(_: impl Foo'a, >) {} - | +LL | fn f<'a>(_: impl Foo<'a>) {} + | ++++ ++ error[E0658]: anonymous lifetimes in `impl Trait` are unstable - --> $DIR/impl-trait-missing-lifetime-gated.rs:58:25 + --> $DIR/impl-trait-missing-lifetime-gated.rs:58:26 | LL | fn g(mut x: impl Foo<>) -> Option<&()> { x.next() } - | ^ expected named lifetime parameter + | ^ expected named lifetime parameter | = help: add `#![feature(anonymous_lifetime_in_impl_trait)]` to the crate attributes to enable = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date help: consider introducing a named lifetime parameter | -LL - fn g(mut x: impl Foo<>) -> Option<&()> { x.next() } -LL + fn g<'a>(mut x: impl Foo'a, >) -> Option<&()> { x.next() } - | +LL | fn g<'a>(mut x: impl Foo<'a>) -> Option<&()> { x.next() } + | ++++ ++ error[E0658]: anonymous lifetimes in `impl Trait` are unstable --> $DIR/impl-trait-missing-lifetime-gated.rs:66:22 From 360012f41a7521f8a1bd488f015b5342e989aab8 Mon Sep 17 00:00:00 2001 From: Lynnesbian Date: Fri, 2 May 2025 13:22:05 +1000 Subject: [PATCH 90/90] Amend language regarding the never type --- library/std/src/keyword_docs.rs | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/library/std/src/keyword_docs.rs b/library/std/src/keyword_docs.rs index b8eb0fd104c3c..b6a9ba0129029 100644 --- a/library/std/src/keyword_docs.rs +++ b/library/std/src/keyword_docs.rs @@ -2415,8 +2415,7 @@ mod while_keyword {} /// a return from the parent function; rather, they cause the `Future` returned by the block to /// return with that value. /// -/// For example, the following Rust function will return `5`, assigning the `!` value to `x`, which -/// goes unused: +/// For example, the following Rust function will return `5`, causing `x` to take the [`!` type][never type]: /// ```rust /// #[expect(unused_variables)] /// fn example() -> i32 { @@ -2455,6 +2454,7 @@ mod while_keyword {} /// [async book]: https://rust-lang.github.io/async-book/ /// [`return`]: ../std/keyword.return.html /// [try operator]: ../reference/expressions/operator-expr.html#r-expr.try +/// [never type]: ../reference/types/never.html /// [`Result`]: result::Result /// [async book blocks]: https://rust-lang.github.io/async-book/part-guide/more-async-await.html#async-blocks mod async_keyword {}