496f7310c8
Fix #124275: Implemented Default for `Arc<str>` With added implementations. ``` GOOD Arc<CStr> BROKEN Arc<OsStr> // removed GOOD Rc<str> GOOD Rc<CStr> BROKEN Rc<OsStr> // removed GOOD Rc<[T]> GOOD Arc<[T]> ``` For discussion of https://github.com/rust-lang/rust/pull/124367#issuecomment-2091940137. Key pain points currently: > I've had a guess at the best locations/feature attrs for them but they might not be correct. > However I'm unclear how to get the OsStr impl to compile, which file should they go in to avoid the error below? Is it possible, perhaps with some special std rust lib magic?