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| author | kennytm <kennytm@gmail.com> | 2018-05-09 17:26:38 +0800 |
|---|---|---|
| committer | kennytm <kennytm@gmail.com> | 2018-05-09 20:29:46 +0800 |
| commit | 4924fea2026c0360cd57106ee6f1199924ad50e1 (patch) | |
| tree | 1a6ea1fe9ae65414a279c97bbd289c141e59ffed /src/libstd/sys_common | |
| parent | 4c3ab33f3a94b7ce21a28658d403e27a81ef042d (diff) | |
| parent | a72a0801bdab22d7c0167f67d1148276ea874d2e (diff) | |
| download | rust-4924fea2026c0360cd57106ee6f1199924ad50e1.tar.gz rust-4924fea2026c0360cd57106ee6f1199924ad50e1.zip | |
Rollup merge of #50511 - Manishearth:must-use, r=QuietMisdreavus
Add some explanations for #[must_use] `#[must_use]` can be given a string argument which is shown whilst warning for things. We should add a string argument to most of the user-exposed ones. I added these for everything but the operators, mostly because I'm not sure what to write there or if we need anything there.
Diffstat (limited to 'src/libstd/sys_common')
| -rw-r--r-- | src/libstd/sys_common/remutex.rs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libstd/sys_common/remutex.rs b/src/libstd/sys_common/remutex.rs index ce43ec6d9ab..022056f8a8a 100644 --- a/src/libstd/sys_common/remutex.rs +++ b/src/libstd/sys_common/remutex.rs @@ -41,7 +41,7 @@ unsafe impl<T: Send> Sync for ReentrantMutex<T> {} /// because implementation of the trait would violate Rust’s reference aliasing /// rules. Use interior mutability (usually `RefCell`) in order to mutate the /// guarded data. -#[must_use] +#[must_use = "if unused the ReentrantMutex will immediately unlock"] pub struct ReentrantMutexGuard<'a, T: 'a> { // funny underscores due to how Deref currently works (it disregards field // privacy). |