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| author | bors <bors@rust-lang.org> | 2022-05-20 01:05:53 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2022-05-20 01:05:53 +0000 |
| commit | 4d6992bc18e54522cced4f945f29f186992d5ea4 (patch) | |
| tree | b792b7921a20c181db9ae50451a8093887ae5cba /compiler/rustc_parse/src/parser/expr.rs | |
| parent | a09d36deae2e25f2eb4a0ee5d95519042ebd66a2 (diff) | |
| parent | 1c3921fa43ecc6438a1f4d5365d2f99caad7b847 (diff) | |
| download | rust-4d6992bc18e54522cced4f945f29f186992d5ea4.tar.gz rust-4d6992bc18e54522cced4f945f29f186992d5ea4.zip | |
Auto merge of #97027 - cuviper:yesalias-refcell, r=thomcc
Use pointers in `cell::{Ref,RefMut}` to avoid `noalias`
When `Ref` and `RefMut` were based on references, they would get LLVM `noalias` attributes that were incorrect, because that alias guarantee is only true until the guard drops. A `&RefCell` on the same value can get a new borrow that aliases the previous guard, possibly leading to miscompilation. Using `NonNull` pointers in `Ref` and `RefCell` avoids `noalias`.
Fixes the library side of #63787, but we still might want to explore language solutions there.
Diffstat (limited to 'compiler/rustc_parse/src/parser/expr.rs')
0 files changed, 0 insertions, 0 deletions