Auto merge of #126319 - workingjubilee:rollup-lendnud, r=workingjubilee

Rollup of 16 pull requests

Successful merges:

 - #123374 (DOC: Add FFI example for slice::from_raw_parts())
 - #124514 (Recommend to never display zero disambiguators when demangling v0 symbols)
 - #125978 (Cleanup: HIR ty lowering: Consolidate the places that do assoc item probing & access checking)
 - #125980 (Nvptx remove direct passmode)
 - #126187 (For E0277 suggest adding `Result` return type for function when using QuestionMark `?` in the body.)
 - #126210 (docs(core): make more const_ptr doctests assert instead of printing)
 - #126249 (Simplify `[T; N]::try_map` signature)
 - #126256 (Add {{target}} substitution to compiletest)
 - #126263 (Make issue-122805.rs big endian compatible)
 - #126281 (set_env: State the conclusion upfront)
 - #126286 (Make `storage-live.rs` robust against rustc internal changes.)
 - #126287 (Update a cranelift patch file for formatting changes.)
 - #126301 (Use `tidy` to sort crate attributes for all compiler crates.)
 - #126305 (Make PathBuf less Ok with adding UTF-16 then `into_string`)
 - #126310 (Migrate run make prefer rlib)
 - #126314 (fix RELEASES: we do not support upcasting to auto traits)

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

1 files changed, 14 insertions, 0 deletions

diff --git a/library/std/tests/windows.rs b/library/std/tests/windows.rs
new file mode 100644
index 00000000000..9f7596f1bc2
--- /dev/null
+++ b/library/std/tests/windows.rs
@@ -0,0 +1,14 @@
+#![cfg(windows)]
+//! An external tests
+
+use std::{ffi::OsString, os::windows::ffi::OsStringExt, path::PathBuf};
+
+#[test]
+#[should_panic]
+fn os_string_must_know_it_isnt_utf8_issue_126291() {
+    let mut utf8 = PathBuf::from(OsString::from("utf8".to_owned()));
+    let non_utf8: OsString =
+        OsStringExt::from_wide(&[0x6e, 0x6f, 0x6e, 0xd800, 0x75, 0x74, 0x66, 0x38]);
+    utf8.set_extension(&non_utf8);
+    utf8.into_os_string().into_string().unwrap();
+}