Auto merge of #121804 - GuillaumeGomez:rollup-jh0v3ex, r=GuillaumeGomez

Rollup of 7 pull requests

Successful merges:

 - #119748 (Increase visibility of `join_path` and `split_paths`)
 - #120820 (Enable CMPXCHG16B, SSE3, SAHF/LAHF and 128-bit Atomics (in nightly) in Windows x64)
 - #121000 (pattern_analysis: rework how we hide empty private fields)
 - #121376 (Skip unnecessary comparison with half-open range patterns)
 - #121596 (Use volatile access instead of `#[used]` for `on_tls_callback`)
 - #121669 (Count stashed errors again)
 - #121783 (Emitter cleanups)

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

Author: bors

clippy_lints/src/doc/needless_doctest_main.rs

@@ -45,7 +45,7 @@ pub fn check(
                 let fallback_bundle =
                     rustc_errors::fallback_fluent_bundle(rustc_driver::DEFAULT_LOCALE_RESOURCES.to_vec(), false);
                 let emitter = HumanEmitter::new(Box::new(io::sink()), fallback_bundle);
-                let dcx = DiagCtxt::with_emitter(Box::new(emitter)).disable_warnings();
+                let dcx = DiagCtxt::new(Box::new(emitter)).disable_warnings();
                 #[expect(clippy::arc_with_non_send_sync)] // `Lrc` is expected by with_dcx
                 let sm = Lrc::new(SourceMap::new(FilePathMapping::empty()));
                 let sess = ParseSess::with_dcx(dcx, sm);

tests/ui/crashes/unreachable-array-or-slice.rs

@@ -0,0 +1,8 @@
+struct Foo(isize, isize, isize, isize);
+
+pub fn main() {
+    let Self::anything_here_kills_it(a, b, ..) = Foo(5, 5, 5, 5);
+    match [5, 5, 5, 5] {
+        [..] => { }
+    }
+}

tests/ui/crashes/unreachable-array-or-slice.stderr

@@ -0,0 +1,9 @@
+error[E0433]: failed to resolve: `Self` is only available in impls, traits, and type definitions
+  --> tests/ui/crashes/unreachable-array-or-slice.rs:4:9
+   |
+LL |     let Self::anything_here_kills_it(a, b, ..) = Foo(5, 5, 5, 5);
+   |         ^^^^ `Self` is only available in impls, traits, and type definitions
+
+error: aborting due to 1 previous error
+
+For more information about this error, try `rustc --explain E0433`.