| commit | 5779843edac746718fead4eeeb505ef7bae8aef0 | [log] [tgz] |
|---|---|---|
| author | Chris Denton <chris@chrisdenton.dev> | Mon Apr 21 18:53:16 2025 +0000 |
| committer | GitHub <noreply@github.com> | Mon Apr 21 18:53:16 2025 +0000 |
| tree | 9f88b6d938dc64df61d3ad8b90667597f1a120bb | |
| parent | 1ca5e4f1c1a4682b06db61abc0ce5d6244571329 [diff] | |
| parent | c1f0498e656665df438178bfd39ce75e321f191f [diff] |
Rollup merge of #139711 - thaliaarchi:hermit-args, r=jhpratt Hermit: Unify `std::env::args` with Unix The only differences between these implementations of `std::env::args` are that Unix uses relaxed ordering, but Hermit uses acquire/release, and Unix truncates `argv` at the first null pointer, but Hermit doesn't. Since Hermit aims for Unix compatibility, unify it with Unix. The atomic orderings were established in https://github.com/rust-lang/rust/pull/74006 (cc `@euclio)` for Unix and https://github.com/rust-lang/rust/pull/100579 (cc `@joboet)` for Hermit and, before those, they used mutexes and non-atomic statics. I think the difference in orderings is simply from them being changed at different times. The commented explanation for using acquire/release for Hermit is “to broadcast writes by the OS”. I'm not experienced enough with atomics to accurately judge, but I think acquire/release is stronger than needed. Either way, they should match. Truncating at the first null pointer seems desirable, though I don't know whether it is necessary in practice on Hermit. cc `@mkroening` `@stlankes` for Hermit
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