rust/library
bors cedbe5c715 Auto merge of #113859 - Manishearth:vec-as-mut-ptr-stacked-borrow, r=dtolnay
Add note that Vec::as_mut_ptr() does not materialize a reference to the internal buffer

See discussion on https://github.com/thomcc/rust-typed-arena/issues/62 and [t-opsem](https://rust-lang.zulipchat.com/#narrow/stream/136281-t-opsem/topic/is.20this.20typed_arena.20code.20sound.20under.20stacked.2Ftree.20borrows.3F)

This method already does the correct thing here, but it is worth guaranteeing that it does so it can be used more freely in unsafe code without having to worry about potential Stacked/Tree Borrows violations. This moves one more unsafe usage pattern from the "very likely sound but technically not fully defined" box into "definitely sound", and currently our surface area of the latter is woefully small.

I'm not sure how best to word this, opening this PR as a way to start discussion.
2023-08-29 06:04:55 +00:00
..
alloc Auto merge of #113859 - Manishearth:vec-as-mut-ptr-stacked-borrow, r=dtolnay 2023-08-29 06:04:55 +00:00
backtrace@99faef833f Bump backtrace to 0.3.69 2023-08-22 15:01:14 -07:00
core Rollup merge of #115311 - dtolnay:usearcself, r=compiler-errors 2023-08-28 19:53:57 +02:00
panic_abort Bump cfg(bootstrap) 2023-08-23 20:05:14 -04:00
panic_unwind Bump cfg(bootstrap) 2023-08-23 20:05:14 -04:00
portable-simd remove repetitive words 2023-07-31 16:13:02 +08:00
proc_macro Bump cfg(bootstrap) 2023-08-23 20:05:14 -04:00
profiler_builtins Bump cfg(bootstrap) 2023-08-23 20:05:14 -04:00
rtstartup
rustc-std-workspace-alloc Replace libstd, libcore, liballoc in line comments. 2022-12-30 14:00:42 +01:00
rustc-std-workspace-core
rustc-std-workspace-std
std Auto merge of #115312 - hermitcore:hermit-is_interrupted, r=thomcc 2023-08-29 04:11:13 +00:00
stdarch@d77878b729 Bump stdarch 2023-06-13 21:45:04 -07:00
sysroot Expose compiler-builtins-weak-intrinsics feature for -Zbuild-std 2023-06-23 11:15:34 +01:00
test Bump cfg(bootstrap) 2023-08-23 20:05:14 -04:00
unwind Bump cfg(bootstrap) 2023-08-23 20:05:14 -04:00