Auto merge of rust-lang#133205 - matthiaskrgr:rollup-xhhhp5u, r=matth…

…iaskrgr

Rollup of 4 pull requests

Successful merges:

 - rust-lang#131081 (Use `ConstArgKind::Path` for all single-segment paths, not just params under `min_generic_const_args`)
 - rust-lang#132577 (Report the `unexpected_cfgs` lint in external macros)
 - rust-lang#133023 (Merge `-Zhir-stats` into `-Zinput-stats`)
 - rust-lang#133200 (ignore an occasionally-failing test in Miri)

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

std/src/sync/rwlock/tests.rs

@@ -550,6 +550,9 @@ fn test_downgrade_observe() {
 }
 
 #[test]
+// FIXME: On macOS we use a provenance-incorrect implementation and Miri catches that issue.
+// See <https://github.com/rust-lang/rust/issues/121950> for details.
+#[cfg_attr(all(miri, target_os = "macos"), ignore)]
 fn test_downgrade_atomic() {
     const NEW_VALUE: i32 = -1;