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| author | Eric Holk <ericholk@microsoft.com> | 2021-12-02 11:36:48 -0800 |
|---|---|---|
| committer | Eric Holk <ericholk@microsoft.com> | 2021-12-02 11:36:56 -0800 |
| commit | 0cb769347d64b52187a593aca941879d990f61b2 (patch) | |
| tree | 73413decb7fe4604b537f3eb146173a5b1ca85c7 /library/core/src/future | |
| parent | db80c0759067028edc71939b24c35d8234835096 (diff) | |
| download | rust-0cb769347d64b52187a593aca941879d990f61b2.tar.gz rust-0cb769347d64b52187a593aca941879d990f61b2.zip | |
Code review feedback
Add a note about `IntoFuture` in error messages where T is not a future. Change await-into-future.rs to be a run-pass test.
Diffstat (limited to 'library/core/src/future')
| -rw-r--r-- | library/core/src/future/future.rs | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/library/core/src/future/future.rs b/library/core/src/future/future.rs index 09d8a2aac26..6b62236b32f 100644 --- a/library/core/src/future/future.rs +++ b/library/core/src/future/future.rs @@ -28,7 +28,11 @@ use crate::task::{Context, Poll}; #[must_use = "futures do nothing unless you `.await` or poll them"] #[stable(feature = "futures_api", since = "1.36.0")] #[lang = "future_trait"] -#[rustc_on_unimplemented(label = "`{Self}` is not a future", message = "`{Self}` is not a future")] +#[rustc_on_unimplemented( + label = "`{Self}` is not a future", + message = "`{Self}` is not a future", + note = "{Self} must be a future or must implement `IntoFuture` to be awaited" +)] pub trait Future { /// The type of value produced on completion. #[stable(feature = "futures_api", since = "1.36.0")] |