nordic-dev.net/rust
nordic-dev.net/rust
2
0
Fork 0
mirror of https://github.com/rust-lang/rust.git synced 2025-05-14 02:49:40 +00:00
Code Issues Packages Projects Releases Wiki Activity
796bc7cae3
rust/library
History
Yuki Okushi 796bc7cae3
Rollup merge of #98383 - m-ou-se:remove-memory-order-restrictions, r=joshtriplett 
Remove restrictions on compare-exchange memory ordering.

We currently don't allow the failure memory ordering of compare-exchange operations to be stronger than the success ordering, as was the case in C++11 when its memory model was copied to Rust. However, this restriction was lifted in C++17 as part of [p0418r2](https://wg21.link/p0418r2). It's time  we lift the restriction too.

| Success | Failure | Before | After |
|---------|---------|--------|-------|
| Relaxed | Relaxed | ✔️ | ✔️ |
| Relaxed | Acquire | ❌                | ✔️ |
| Relaxed | SeqCst  | ❌                | ✔️ |
| Acquire | Relaxed | ✔️ | ✔️ |
| Acquire | Acquire | ✔️ | ✔️ |
| Acquire | SeqCst  | ❌                | ✔️ |
| Release | Relaxed | ✔️ | ✔️ |
| Release | Acquire | ❌                | ✔️ |
| Release | SeqCst  | ❌                | ✔️ |
| AcqRel  | Relaxed | ✔️ | ✔️ |
| AcqRel  | Acquire | ✔️ | ✔️ |
| AcqRel  | SeqCst  | ❌                | ✔️ |
| SeqCst  | Relaxed | ✔️ | ✔️ |
| SeqCst  | Acquire | ✔️ | ✔️ |
| SeqCst  | SeqCst  | ✔️ | ✔️ |
| \*      | Release | ❌                | ❌                |
| \*      | AcqRel  | ❌                | ❌                |

Fixes https://github.com/rust-lang/rust/issues/68464
2022-07-18 08:39:57 +09:00
..
alloc Rollup merge of #99317 - yanchith:borrow-vec-ta-as-slice-t, r=Mark-Simulacrum 2022-07-16 22:30:54 +02:00
backtrace@4e5a3f7292 update libbacktrace 2022-05-20 09:30:26 +02:00
core Rollup merge of #98383 - m-ou-se:remove-memory-order-restrictions, r=joshtriplett 2022-07-18 08:39:57 +09:00
panic_abort Fully stabilize NLL 2022-06-03 17:16:41 -04:00
panic_unwind Add underscores to rust_eh_personality arguments to mark them as unused 2022-06-09 09:50:26 -07:00
portable-simd Finish bumping stage0 2022-05-27 07:36:17 -04:00
proc_macro review changes 2022-06-28 09:54:29 -04:00
profiler_builtins Fully stabilize NLL 2022-06-03 17:16:41 -04:00
rtstartup
rustc-std-workspace-alloc Switch all libraries to the 2021 edition 2021-12-23 19:03:47 +08:00
rustc-std-workspace-core Switch all libraries to the 2021 edition 2021-12-23 19:03:47 +08:00
rustc-std-workspace-std Switch all libraries to the 2021 edition 2021-12-23 19:03:47 +08:00
std Rollup merge of #99302 - yaahc:gma-tracking-issue, r=joshtriplett 2022-07-17 13:08:51 +09:00
stdarch@28335054b1 Also allow unused macro rules in stdarch 2022-05-10 19:53:22 +02:00
test Fix binary name in help message for test binaries 2022-07-09 18:52:37 -04:00
unwind update cfg(bootstrap)s 2022-07-01 15:48:23 +02:00