Auto merge of rust-lang#96931 - JohnTitor:rollup-3um8o4j, r=JohnTitor

Rollup of 7 pull requests

Successful merges:

 - rust-lang#96543 (Remove hacks in `make_token_stream`.)
 - rust-lang#96887 (rustdoc: correct path to type alias methods)
 - rust-lang#96896 (Add regression test for rust-lang#68408)
 - rust-lang#96900 (Fix js error)
 - rust-lang#96903 (Use lifetimes on type-alias-impl-trait used in function signatures to infer output type lifetimes)
 - rust-lang#96916 (simplify length count)
 - rust-lang#96925 (Fix issue rust-lang#95151)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

Diff for: compiler/rustc_middle/src/ty/fold.rs

@@ -1349,7 +1349,7 @@ impl<'tcx> TypeVisitor<'tcx> for LateBoundRegionsCollector {
         // ignore the inputs to a projection, as they may not appear
         // in the normalized form
         if self.just_constrained {
-            if let ty::Projection(..) | ty::Opaque(..) = t.kind() {
+            if let ty::Projection(..) = t.kind() {
                 return ControlFlow::CONTINUE;
             }
         }

Diff for: compiler/rustc_mir_transform/src/coverage/spans.rs

@@ -485,7 +485,7 @@ impl<'a, 'tcx> CoverageSpans<'a, 'tcx> {
             }) {
                 let merged_prefix_len = self.curr_original_span.lo() - self.curr().span.lo();
                 let after_macro_bang =
-                    merged_prefix_len + BytePos(visible_macro.as_str().bytes().count() as u32 + 1);
+                    merged_prefix_len + BytePos(visible_macro.as_str().len() as u32 + 1);
                 let mut macro_name_cov = self.curr().clone();
                 self.curr_mut().span =
                     self.curr().span.with_lo(self.curr().span.lo() + after_macro_bang);

Diff for: compiler/rustc_parse/src/parser/attr_wrapper.rs

@@ -388,12 +388,6 @@ impl<'a> Parser<'a> {
 /// Converts a flattened iterator of tokens (including open and close delimiter tokens)
 /// into a `TokenStream`, creating a `TokenTree::Delimited` for each matching pair
 /// of open and close delims.
-// FIXME(#67062): Currently, we don't parse `Invisible`-delimited groups correctly,
-// which can cause us to end up with mismatched `Invisible` delimiters in our
-// captured tokens. This function contains several hacks to work around this -
-// essentially, we throw away mismatched `Invisible` delimiters when we encounter them.
-// Once we properly parse `Invisible` delimiters, they can be captured just like any
-// other tokens, and these hacks can be removed.
 fn make_token_stream(
     mut iter: impl Iterator<Item = (FlatToken, Spacing)>,
     break_last_token: bool,
@@ -412,35 +406,10 @@ fn make_token_stream(
                 stack.push(FrameData { open_delim_sp: Some((delim, span)), inner: vec![] });
             }
             FlatToken::Token(Token { kind: TokenKind::CloseDelim(delim), span }) => {
-                // HACK: If we encounter a mismatched `Invisible` delimiter at the top
-                // level, just ignore it.
-                if matches!(delim, Delimiter::Invisible)
-                    && (stack.len() == 1
-                        || !matches!(
-                            stack.last_mut().unwrap().open_delim_sp.unwrap().0,
-                            Delimiter::Invisible
-                        ))
-                {
-                    token_and_spacing = iter.next();
-                    continue;
-                }
                 let frame_data = stack
                     .pop()
                     .unwrap_or_else(|| panic!("Token stack was empty for token: {:?}", token));
 
-                // HACK: If our current frame has a mismatched opening `Invisible` delimiter,
-                // merge our current frame with the one above it. That is, transform
-                // `[ { < first second } third ]` into `[ { first second } third ]`
-                if !matches!(delim, Delimiter::Invisible)
-                    && matches!(frame_data.open_delim_sp.unwrap().0, Delimiter::Invisible)
-                {
-                    stack.last_mut().unwrap().inner.extend(frame_data.inner);
-                    // Process our closing delimiter again, this time at the previous
-                    // frame in the stack
-                    token_and_spacing = Some((token, spacing));
-                    continue;
-                }
-
                 let (open_delim, open_sp) = frame_data.open_delim_sp.unwrap();
                 assert_eq!(
                     open_delim, delim,
@@ -472,13 +441,6 @@ fn make_token_stream(
         }
         token_and_spacing = iter.next();
     }
-    // HACK: If we don't have a closing `Invisible` delimiter for our last
-    // frame, merge the frame with the top-level frame. That is,
-    // turn `< first second` into `first second`
-    if stack.len() == 2 && stack[1].open_delim_sp.unwrap().0 == Delimiter::Invisible {
-        let temp_buf = stack.pop().unwrap();
-        stack.last_mut().unwrap().inner.extend(temp_buf.inner);
-    }
     let mut final_buf = stack.pop().expect("Missing final buf!");
     if break_last_token {
         let (last_token, spacing) = final_buf.inner.pop().unwrap();

Diff for: compiler/rustc_parse/src/parser/diagnostics.rs

@@ -2109,8 +2109,7 @@ impl<'a> Parser<'a> {
                     brace_depth -= 1;
                     continue;
                 }
-            } else if self.token == token::Eof || self.eat(&token::CloseDelim(Delimiter::Invisible))
-            {
+            } else if self.token == token::Eof {
                 return;
             } else {
                 self.bump();

Diff for: src/librustdoc/formats/cache.rs

@@ -288,14 +288,7 @@ impl<'a, 'tcx> DocFolder for CacheBuilder<'a, 'tcx> {
                             // for where the type was defined. On the other
                             // hand, `paths` always has the right
                             // information if present.
-                            Some(&(
-                                ref fqp,
-                                ItemType::Trait
-                                | ItemType::Struct
-                                | ItemType::Union
-                                | ItemType::Enum,
-                            )) => Some(&fqp[..fqp.len() - 1]),
-                            Some(..) => Some(&*self.cache.stack),
+                            Some(&(ref fqp, _)) => Some(&fqp[..fqp.len() - 1]),
                             None => None,
                         };
                         ((Some(*last), path), true)

Diff for: src/librustdoc/html/static/css/rustdoc.css

@@ -331,7 +331,6 @@ li {
 nav.sub {
 	position: relative;
 	font-size: 1rem;
-	text-transform: uppercase;
 }
 
 .sub-container {

Diff for: src/librustdoc/html/static/js/source-script.js

@@ -1,5 +1,5 @@
 // From rust:
-/* global search, sourcesIndex */
+/* global sourcesIndex */
 
 // Local js definitions:
 /* global addClass, getCurrentValue, hasClass, onEachLazy, removeClass, browserSupportsHistoryApi */
@@ -69,7 +69,6 @@ function createDirEntry(elem, parent, fullPath, currentFile, hasFoundFile) {
             files.appendChild(file);
         }
     }
-    search.fullPath = fullPath;
     children.appendChild(files);
     parent.appendChild(name);
     parent.appendChild(children);

Diff for: src/test/rustdoc-gui/sidebar-source-code-display.goml

@@ -15,6 +15,5 @@ assert-css: ("#sidebar-toggle", {"visibility": "visible", "opacity": 1})
 assert-css: (".sidebar > *:not(#sidebar-toggle)", {"visibility": "hidden", "opacity": 0})
 // Let's expand the sidebar now.
 click: "#sidebar-toggle"
-// Because of the transition CSS, better wait a second before checking.
+// Because of the transition CSS, we check by using `wait-for-css` instead of `assert-css`.
 wait-for-css: ("#sidebar-toggle", {"visibility": "visible", "opacity": 1})
-assert-css: (".sidebar > *:not(#sidebar-toggle)", {"visibility": "visible", "opacity": 1})

Diff for: src/test/rustdoc-js-std/asrawfd.js

@@ -0,0 +1,14 @@
+// ignore-order
+
+const QUERY = 'RawFd::as_raw_fd';
+
+const EXPECTED = {
+    'others': [
+        // Reproduction test for https://github.com/rust-lang/rust/issues/78724
+        // Validate that type alias methods get the correct path.
+        { 'path': 'std::os::unix::io::AsRawFd', 'name': 'as_raw_fd' },
+        { 'path': 'std::os::wasi::io::AsRawFd', 'name': 'as_raw_fd' },
+        { 'path': 'std::os::linux::process::PidFd', 'name': 'as_raw_fd' },
+        { 'path': 'std::os::unix::io::RawFd', 'name': 'as_raw_fd' },
+    ],
+};

Diff for: src/test/rustdoc-js/foreign-type-path.js

@@ -0,0 +1,9 @@
+const QUERY = 'MyForeignType::my_method';
+
+const EXPECTED = {
+    'others': [
+        // Test case for https://github.com/rust-lang/rust/pull/96887#pullrequestreview-967154358
+        // Validates that the parent path for a foreign type method is correct.
+        { 'path': 'foreign_type_path::aaaaaaa::MyForeignType', 'name': 'my_method' },
+    ],
+};

Diff for: src/test/rustdoc-js/foreign-type-path.rs

@@ -0,0 +1,13 @@
+#![feature(extern_types)]
+
+pub mod aaaaaaa {
+
+    extern {
+        pub type MyForeignType;
+    }
+
+    impl MyForeignType {
+        pub fn my_method() {}
+    }
+
+}

Diff for: src/test/ui/lint/dead-code/issue-68408-false-positive.rs

@@ -0,0 +1,22 @@
+// check-pass
+
+// Make sure we don't have any false positives here.
+
+#![deny(dead_code)]
+
+enum X {
+    A { _a: () },
+    B { _b: () },
+}
+impl X {
+    fn a() -> X {
+        X::A { _a: () }
+    }
+    fn b() -> Self {
+        Self::B { _b: () }
+    }
+}
+
+fn main() {
+    let (_, _) = (X::a(), X::b());
+}

Diff for: src/test/ui/rfc-2091-track-caller/macro-declaration.rs

@@ -0,0 +1,10 @@
+// check-pass
+
+// See https://github.com/rust-lang/rust/issues/95151
+#[track_caller]
+macro_rules! _foo {
+    () => {};
+}
+
+fn main() {
+}

Diff for: src/test/ui/type-alias-impl-trait/constrain_inputs.rs

@@ -0,0 +1,17 @@
+// check-pass
+
+#![feature(type_alias_impl_trait)]
+
+mod foo {
+    type Ty<'a> = impl Sized;
+    fn defining(s: &str) -> Ty<'_> { s }
+    fn execute(ty: Ty<'_>) -> &str { todo!() }
+}
+
+mod bar {
+    type Ty<'a> = impl FnOnce() -> &'a str;
+    fn defining(s: &str) -> Ty<'_> { move || s }
+    fn execute(ty: Ty<'_>) -> &str { ty() }
+}
+
+fn main() {}

Diff for: src/tools/rustfmt/src/parse/macros/mod.rs

@@ -79,9 +79,7 @@ fn check_keyword<'a, 'b: 'a>(parser: &'a mut Parser<'b>) -> Option<MacroArg> {
     for &keyword in RUST_KW.iter() {
         if parser.token.is_keyword(keyword)
             && parser.look_ahead(1, |t| {
-                t.kind == TokenKind::Eof
-                    || t.kind == TokenKind::Comma
-                    || t.kind == TokenKind::CloseDelim(Delimiter::Invisible)
+                t.kind == TokenKind::Eof || t.kind == TokenKind::Comma
             })
         {
             parser.bump();