bjoernager/rust
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Migrate trait_fn_async

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This commit is contained in:
finalchild 2022-08-18 16:49:52 +09:00
parent 88afae5d1a
commit e3d4c4039a
3 changed files with 18 additions and 10 deletions
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11
compiler/rustc_ast_passes/src/ast_validation.rs
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@ -287,16 +287,7 @@ impl<'a> AstValidator<'a> {
fn check_trait_fn_not_async(&self, fn_span: Span, asyncness: Async) {
if let Async::Yes { span, .. } = asyncness {
struct_span_err!(
self.session,
fn_span,
E0706,
"functions in traits cannot be declared `async`"
)
.span_label(span, "`async` because of this")
.note("`async` trait functions are not currently supported")
.note("consider using the `async-trait` crate: https://crates.io/crates/async-trait")
.emit();
self.session.emit_err(TraitFnAsync { fn_span, span });
}
}