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| author | bors <bors@rust-lang.org> | 2022-11-17 13:47:03 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2022-11-17 13:47:03 +0000 |
| commit | b6097f2e1b2ca62e188ba53cf43bd66b06b36915 (patch) | |
| tree | 2e5d5c944967d1a4629252a8016b34df8da1efd9 /library/core | |
| parent | 36db030a7c3c51cb4484cbd8c8daebcf5057d61c (diff) | |
| parent | 79c06fc595261a118cea2e5440ed98fbf5659a99 (diff) | |
| download | rust-b6097f2e1b2ca62e188ba53cf43bd66b06b36915.tar.gz rust-b6097f2e1b2ca62e188ba53cf43bd66b06b36915.zip | |
Auto merge of #104219 - bryangarza:async-track-caller-dup, r=eholk
Support `#[track_caller]` on async fns Adds `#[track_caller]` to the generator that is created when we desugar the async fn. Fixes #78840 Open questions: - What is the performance impact of adding `#[track_caller]` to every `GenFuture`'s `poll(...)` function, even if it's unused (i.e., the parent span does not set `#[track_caller]`)? We might need to set it only conditionally, if the indirection causes overhead we don't want.
Diffstat (limited to 'library/core')
| -rw-r--r-- | library/core/src/future/mod.rs | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/library/core/src/future/mod.rs b/library/core/src/future/mod.rs index 6487aa08859..107cf92c1c0 100644 --- a/library/core/src/future/mod.rs +++ b/library/core/src/future/mod.rs @@ -82,6 +82,7 @@ where impl<T: Generator<ResumeTy, Yield = ()>> Future for GenFuture<T> { type Output = T::Return; + #[track_caller] fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> { // SAFETY: Safe because we're !Unpin + !Drop, and this is just a field projection. let gen = unsafe { Pin::map_unchecked_mut(self, |s| &mut s.0) }; |