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Add missing check for async body when suggesting await on futures. #135492

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merged 1 commit into from
Jan 24, 2025
Merged

Add missing check for async body when suggesting await on futures. #135492

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12 changes: 12 additions & 0 deletions compiler/rustc_trait_selection/src/error_reporting/infer/suggest.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -167,6 +167,18 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
exp_span, exp_found.expected, exp_found.found,
);

match self.tcx.coroutine_kind(cause.body_id) {
Some(hir::CoroutineKind::Desugared(
hir::CoroutineDesugaring::Async | hir::CoroutineDesugaring::AsyncGen,
_,
)) => (),
None
| Some(
hir::CoroutineKind::Coroutine(_)
| hir::CoroutineKind::Desugared(hir::CoroutineDesugaring::Gen, _),
) => return,
}

if let ObligationCauseCode::CompareImplItem { .. } = cause.code() {
return;
}
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1 change: 0 additions & 1 deletion tests/ui/async-await/coroutine-desc.stderr
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Expand Up @@ -30,7 +30,6 @@ LL | fun(one(), two());
| | expected all arguments to be this future type because they need to match the type of this parameter
| arguments to this function are incorrect
|
= help: consider `await`ing on both `Future`s
= note: distinct uses of `impl Trait` result in different opaque types
note: function defined here
--> $DIR/coroutine-desc.rs:7:4
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9 changes: 0 additions & 9 deletions tests/ui/async-await/dont-suggest-missing-await.stderr
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Expand Up @@ -6,20 +6,11 @@ LL | take_u32(x)
| |
| arguments to this function are incorrect
|
note: calling an async function returns a future
--> $DIR/dont-suggest-missing-await.rs:14:18
|
LL | take_u32(x)
| ^
note: function defined here
--> $DIR/dont-suggest-missing-await.rs:5:4
|
LL | fn take_u32(x: u32) {}
| ^^^^^^^^ ------
help: consider `await`ing on the `Future`
|
LL | take_u32(x.await)
| ++++++

error: aborting due to 1 previous error

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9 changes: 0 additions & 9 deletions tests/ui/impl-trait/issue-102605.stderr
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Expand Up @@ -14,20 +14,11 @@ LL | convert_result(foo())
| |
| arguments to this function are incorrect
|
note: calling an async function returns a future
--> $DIR/issue-102605.rs:13:20
|
LL | convert_result(foo())
| ^^^^^
note: function defined here
--> $DIR/issue-102605.rs:7:4
|
LL | fn convert_result<T, E>(r: Result<T, E>) -> Option<T> {
| ^^^^^^^^^^^^^^ ---------------
help: consider `await`ing on the `Future`
|
LL | convert_result(foo().await)
| ++++++
help: try wrapping the expression in `Err`
|
LL | convert_result(Err(foo()))
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