Rollup of 15 pull requests

Cargo.lock

@@ -4563,7 +4563,10 @@ dependencies = [
  "rustc_macros",
  "rustc_serialize",
  "rustc_span",
+ "serde",
+ "serde_derive",
  "serde_json",
+ "serde_path_to_error",
  "tracing",
 ]
 
@@ -4955,6 +4958,16 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serde_path_to_error"
+version = "0.1.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "59fab13f937fa393d08645bf3a84bdfe86e296747b506ada67bb15f10f218b2a"
+dependencies = [
+ "itoa",
+ "serde",
+]
+
 [[package]]
 name = "serde_spanned"
 version = "0.6.9"

compiler/rustc_attr_parsing/src/attributes/stability.rs

@@ -74,8 +74,15 @@ impl<S: Stage> AttributeParser<S> for StabilityParser {
             template!(NameValueStr: "deprecation message"),
             |this, cx, args| {
                 reject_outside_std!(cx);
-                this.allowed_through_unstable_modules =
-                    args.name_value().and_then(|i| i.value_as_str())
+                let Some(nv) = args.name_value() else {
+                    cx.expected_name_value(cx.attr_span, None);
+                    return;
+                };
+                let Some(value_str) = nv.value_as_str() else {
+                    cx.expected_string_literal(nv.value_span, Some(nv.value_as_lit()));
+                    return;
+                };
+                this.allowed_through_unstable_modules = Some(value_str);
             },
         ),
     ];
@@ -247,7 +254,12 @@ pub(crate) fn parse_stability<S: Stage>(
     let mut feature = None;
     let mut since = None;
 
-    for param in args.list()?.mixed() {
+    let ArgParser::List(list) = args else {
+        cx.expected_list(cx.attr_span);
+        return None;
+    };
+
+    for param in list.mixed() {
         let param_span = param.span();
         let Some(param) = param.meta_item() else {
             cx.emit_err(session_diagnostics::UnsupportedLiteral {
@@ -322,7 +334,13 @@ pub(crate) fn parse_unstability<S: Stage>(
     let mut is_soft = false;
     let mut implied_by = None;
     let mut old_name = None;
-    for param in args.list()?.mixed() {
+
+    let ArgParser::List(list) = args else {
+        cx.expected_list(cx.attr_span);
+        return None;
+    };
+
+    for param in list.mixed() {
         let Some(param) = param.meta_item() else {
             cx.emit_err(session_diagnostics::UnsupportedLiteral {
                 span: param.span(),

compiler/rustc_codegen_ssa/src/back/link/raw_dylib.rs

@@ -4,7 +4,7 @@ use std::path::{Path, PathBuf};
 
 use rustc_abi::Endian;
 use rustc_data_structures::base_n::{CASE_INSENSITIVE, ToBaseN};
-use rustc_data_structures::fx::FxIndexMap;
+use rustc_data_structures::fx::{FxHashMap, FxIndexMap};
 use rustc_data_structures::stable_hasher::StableHasher;
 use rustc_hashes::Hash128;
 use rustc_session::Session;
@@ -214,7 +214,7 @@ pub(super) fn create_raw_dylib_elf_stub_shared_objects<'a>(
 /// It exports all the provided symbols, but is otherwise empty.
 fn create_elf_raw_dylib_stub(sess: &Session, soname: &str, symbols: &[DllImport]) -> Vec<u8> {
     use object::write::elf as write;
-    use object::{Architecture, elf};
+    use object::{AddressSize, Architecture, elf};
 
     let mut stub_buf = Vec::new();
 
@@ -226,54 +226,94 @@ fn create_elf_raw_dylib_stub(sess: &Session, soname: &str, symbols: &[DllImport]
     // It is important that the order of reservation matches the order of writing.
     // The object crate contains many debug asserts that fire if you get this wrong.
 
+    let Some((arch, sub_arch)) = sess.target.object_architecture(&sess.unstable_target_features)
+    else {
+        sess.dcx().fatal(format!(
+            "raw-dylib is not supported for the architecture `{}`",
+            sess.target.arch
+        ));
+    };
+
     let endianness = match sess.target.options.endian {
         Endian::Little => object::Endianness::Little,
         Endian::Big => object::Endianness::Big,
     };
-    let mut stub = write::Writer::new(endianness, true, &mut stub_buf);
+
+    let is_64 = match arch.address_size() {
+        Some(AddressSize::U8 | AddressSize::U16 | AddressSize::U32) => false,
+        Some(AddressSize::U64) => true,
+        _ => sess.dcx().fatal(format!(
+            "raw-dylib is not supported for the architecture `{}`",
+            sess.target.arch
+        )),
+    };
+
+    let mut stub = write::Writer::new(endianness, is_64, &mut stub_buf);
+
+    let mut vers = Vec::new();
+    let mut vers_map = FxHashMap::default();
+    let mut syms = Vec::new();
+
+    for symbol in symbols {
+        let symbol_name = symbol.name.as_str();
+        if let Some((name, version_name)) = symbol_name.split_once('@') {
+            assert!(!version_name.contains('@'));
+            let dynstr = stub.add_dynamic_string(name.as_bytes());
+            let ver = if let Some(&ver_id) = vers_map.get(version_name) {
+                ver_id
+            } else {
+                let id = vers.len();
+                vers_map.insert(version_name, id);
+                let dynstr = stub.add_dynamic_string(version_name.as_bytes());
+                vers.push((version_name, dynstr));
+                id
+            };
+            syms.push((name, dynstr, Some(ver)));
+        } else {
+            let dynstr = stub.add_dynamic_string(symbol_name.as_bytes());
+            syms.push((symbol_name, dynstr, None));
+        }
+    }
+
+    let soname = stub.add_dynamic_string(soname.as_bytes());
 
     // These initial reservations don't reserve any bytes in the binary yet,
     // they just allocate in the internal data structures.
 
-    // First, we crate the dynamic symbol table. It starts with a null symbol
+    // First, we create the dynamic symbol table. It starts with a null symbol
     // and then all the symbols and their dynamic strings.
     stub.reserve_null_dynamic_symbol_index();
 
-    let dynstrs = symbols
-        .iter()
-        .map(|sym| {
-            stub.reserve_dynamic_symbol_index();
-            (sym, stub.add_dynamic_string(sym.name.as_str().as_bytes()))
-        })
-        .collect::<Vec<_>>();
-
-    let soname = stub.add_dynamic_string(soname.as_bytes());
+    for _ in syms.iter() {
+        stub.reserve_dynamic_symbol_index();
+    }
 
     // Reserve the sections.
     // We have the minimal sections for a dynamic SO and .text where we point our dummy symbols to.
     stub.reserve_shstrtab_section_index();
     let text_section_name = stub.add_section_name(".text".as_bytes());
     let text_section = stub.reserve_section_index();
-    stub.reserve_dynstr_section_index();
     stub.reserve_dynsym_section_index();
+    stub.reserve_dynstr_section_index();
+    if !vers.is_empty() {
+        stub.reserve_gnu_versym_section_index();
+        stub.reserve_gnu_verdef_section_index();
+    }
     stub.reserve_dynamic_section_index();
 
     // These reservations now determine the actual layout order of the object file.
     stub.reserve_file_header();
     stub.reserve_shstrtab();
     stub.reserve_section_headers();
-    stub.reserve_dynstr();
     stub.reserve_dynsym();
+    stub.reserve_dynstr();
+    if !vers.is_empty() {
+        stub.reserve_gnu_versym();
+        stub.reserve_gnu_verdef(1 + vers.len(), 1 + vers.len());
+    }
     stub.reserve_dynamic(2); // DT_SONAME, DT_NULL
 
     // First write the ELF header with the arch information.
-    let Some((arch, sub_arch)) = sess.target.object_architecture(&sess.unstable_target_features)
-    else {
-        sess.dcx().fatal(format!(
-            "raw-dylib is not supported for the architecture `{}`",
-            sess.target.arch
-        ));
-    };
     let e_machine = match (arch, sub_arch) {
         (Architecture::Aarch64, None) => elf::EM_AARCH64,
         (Architecture::Aarch64_Ilp32, None) => elf::EM_AARCH64,
@@ -342,18 +382,19 @@ fn create_elf_raw_dylib_stub(sess: &Session, soname: &str, symbols: &[DllImport]
         sh_addralign: 1,
         sh_entsize: 0,
     });
-    stub.write_dynstr_section_header(0);
     stub.write_dynsym_section_header(0, 1);
+    stub.write_dynstr_section_header(0);
+    if !vers.is_empty() {
+        stub.write_gnu_versym_section_header(0);
+        stub.write_gnu_verdef_section_header(0);
+    }
     stub.write_dynamic_section_header(0);
 
-    // .dynstr
-    stub.write_dynstr();
-
     // .dynsym
     stub.write_null_dynamic_symbol();
-    for (_, name) in dynstrs {
+    for (_name, dynstr, _ver) in syms.iter().copied() {
         stub.write_dynamic_symbol(&write::Sym {
-            name: Some(name),
+            name: Some(dynstr),
             st_info: (elf::STB_GLOBAL << 4) | elf::STT_NOTYPE,
             st_other: elf::STV_DEFAULT,
             section: Some(text_section),
@@ -363,10 +404,47 @@ fn create_elf_raw_dylib_stub(sess: &Session, soname: &str, symbols: &[DllImport]
         });
     }
 
+    // .dynstr
+    stub.write_dynstr();
+
+    // ld.bfd is unhappy if these sections exist without any symbols, so we only generate them when necessary.
+    if !vers.is_empty() {
+        // .gnu_version
+        stub.write_null_gnu_versym();
+        for (_name, _dynstr, ver) in syms.iter().copied() {
+            stub.write_gnu_versym(if let Some(ver) = ver {
+                assert!((2 + ver as u16) < elf::VERSYM_HIDDEN);
+                elf::VERSYM_HIDDEN | (2 + ver as u16)
+            } else {
+                1
+            });
+        }
+
+        // .gnu_version_d
+        stub.write_align_gnu_verdef();
+        stub.write_gnu_verdef(&write::Verdef {
+            version: elf::VER_DEF_CURRENT,
+            flags: elf::VER_FLG_BASE,
+            index: 1,
+            aux_count: 1,
+            name: soname,
+        });
+        for (ver, (_name, dynstr)) in vers.into_iter().enumerate() {
+            stub.write_gnu_verdef(&write::Verdef {
+                version: elf::VER_DEF_CURRENT,
+                flags: 0,
+                index: 2 + ver as u16,
+                aux_count: 1,
+                name: dynstr,
+            });
+        }
+    }
+
     // .dynamic
     // the DT_SONAME will be used by the linker to populate DT_NEEDED
     // which the loader uses to find the library.
     // DT_NULL terminates the .dynamic table.
+    stub.write_align_dynamic();
     stub.write_dynamic_string(elf::DT_SONAME, soname);
     stub.write_dynamic(elf::DT_NULL, 0);
 

compiler/rustc_hir_analysis/src/hir_ty_lowering/lint.rs

@@ -447,17 +447,30 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
     fn maybe_suggest_assoc_ty_bound(&self, self_ty: &hir::Ty<'_>, diag: &mut Diag<'_>) {
         let mut parents = self.tcx().hir_parent_iter(self_ty.hir_id);
 
-        if let Some((_, hir::Node::AssocItemConstraint(constraint))) = parents.next()
+        if let Some((c_hir_id, hir::Node::AssocItemConstraint(constraint))) = parents.next()
             && let Some(obj_ty) = constraint.ty()
+            && let Some((_, hir::Node::TraitRef(trait_ref))) = parents.next()
         {
-            if let Some((_, hir::Node::TraitRef(..))) = parents.next()
-                && let Some((_, hir::Node::Ty(ty))) = parents.next()
+            if let Some((_, hir::Node::Ty(ty))) = parents.next()
                 && let hir::TyKind::TraitObject(..) = ty.kind
             {
                 // Assoc ty bounds aren't permitted inside trait object types.
                 return;
             }
 
+            if trait_ref
+                .path
+                .segments
+                .iter()
+                .find_map(|seg| {
+                    seg.args.filter(|args| args.constraints.iter().any(|c| c.hir_id == c_hir_id))
+                })
+                .is_none_or(|args| args.parenthesized != hir::GenericArgsParentheses::No)
+            {
+                // Only consider angle-bracketed args (where we have a `=` to replace with `:`).
+                return;
+            }
+
             let lo = if constraint.gen_args.span_ext.is_dummy() {
                 constraint.ident.span
             } else {

compiler/rustc_hir_typeck/src/upvar.rs

@@ -1047,7 +1047,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                             }
                         }
                     }
-                    lint.note("for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/disjoint-capture-in-closures.html>");
+                    lint.note("for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/disjoint-capture-in-closures.html>");
 
                     let diagnostic_msg = format!(
                         "add a dummy let to cause {migrated_variables_concat} to be fully captured"

compiler/rustc_lint/messages.ftl

@@ -593,7 +593,7 @@ lint_non_camel_case_type = {$sort} `{$name}` should have an upper camel case nam
 
 lint_non_fmt_panic = panic message is not a string literal
     .note = this usage of `{$name}!()` is deprecated; it will be a hard error in Rust 2021
-    .more_info_note = for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
+    .more_info_note = for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
     .supports_fmt_note = the `{$name}!()` macro supports formatting, so there's no need for the `format!()` macro here
     .supports_fmt_suggestion = remove the `format!(..)` macro call
     .display_suggestion = add a "{"{"}{"}"}" format string to `Display` the message

compiler/rustc_lint/src/builtin.rs

@@ -1654,7 +1654,7 @@ declare_lint! {
     "`...` range patterns are deprecated",
     @future_incompatible = FutureIncompatibleInfo {
         reason: FutureIncompatibilityReason::EditionError(Edition::Edition2021),
-        reference: "<https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>",
+        reference: "<https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>",
     };
 }
 
@@ -1835,7 +1835,7 @@ declare_lint! {
     "detects edition keywords being used as an identifier",
     @future_incompatible = FutureIncompatibleInfo {
         reason: FutureIncompatibilityReason::EditionError(Edition::Edition2024),
-        reference: "<https://doc.rust-lang.org/nightly/edition-guide/rust-2024/gen-keyword.html>",
+        reference: "<https://doc.rust-lang.org/edition-guide/rust-2024/gen-keyword.html>",
     };
 }
 

compiler/rustc_lint/src/if_let_rescope.rs

@@ -87,7 +87,7 @@ declare_lint! {
     rewriting in `match` is an option to preserve the semantics up to Edition 2021",
     @future_incompatible = FutureIncompatibleInfo {
         reason: FutureIncompatibilityReason::EditionSemanticsChange(Edition::Edition2024),
-        reference: "<https://doc.rust-lang.org/nightly/edition-guide/rust-2024/temporary-if-let-scope.html>",
+        reference: "<https://doc.rust-lang.org/edition-guide/rust-2024/temporary-if-let-scope.html>",
     };
 }
 

compiler/rustc_lint/src/impl_trait_overcaptures.rs

@@ -71,7 +71,7 @@ declare_lint! {
     "`impl Trait` will capture more lifetimes than possibly intended in edition 2024",
     @future_incompatible = FutureIncompatibleInfo {
         reason: FutureIncompatibilityReason::EditionSemanticsChange(Edition::Edition2024),
-        reference: "<https://doc.rust-lang.org/nightly/edition-guide/rust-2024/rpit-lifetime-capture.html>",
+        reference: "<https://doc.rust-lang.org/edition-guide/rust-2024/rpit-lifetime-capture.html>",
     };
 }
 

compiler/rustc_lint/src/macro_expr_fragment_specifier_2024_migration.rs

@@ -65,15 +65,15 @@ declare_lint! {
     /// to ensure the macros implement the desired behavior.
     ///
     /// [editions]: https://doc.rust-lang.org/edition-guide/
-    /// [macro matcher fragment specifiers]: https://doc.rust-lang.org/nightly/edition-guide/rust-2024/macro-fragment-specifiers.html
+    /// [macro matcher fragment specifiers]: https://doc.rust-lang.org/edition-guide/rust-2024/macro-fragment-specifiers.html
     /// [`cargo fix`]: https://doc.rust-lang.org/cargo/commands/cargo-fix.html
     pub EDITION_2024_EXPR_FRAGMENT_SPECIFIER,
     Allow,
     "The `expr` fragment specifier will accept more expressions in the 2024 edition. \
     To keep the existing behavior, use the `expr_2021` fragment specifier.",
     @future_incompatible = FutureIncompatibleInfo {
         reason: FutureIncompatibilityReason::EditionSemanticsChange(Edition::Edition2024),
-        reference: "Migration Guide <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/macro-fragment-specifiers.html>",
+        reference: "Migration Guide <https://doc.rust-lang.org/edition-guide/rust-2024/macro-fragment-specifiers.html>",
     };
 }