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b3aa8e7168
rust/compiler/rustc_middle
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bors b3aa8e7168 Auto merge of #115864 - compiler-errors:rpitit-sugg, r=estebank 
Suggest desugaring to return-position `impl Future` when an `async fn` in trait fails an auto trait bound

First commit allows us to store the span of the `async` keyword in HIR.

Second commit implements a suggestion to desugar an `async fn` to a return-position `impl Future` in trait to slightly improve the `Send` situation being discussed in #115822.

This suggestion is only made when `#![feature(return_type_notation)]` is not enabled -- if it is, we should instead suggest an appropriate where-clause bound.
2023-09-21 21:12:32 +00:00
..
src Auto merge of #115864 - compiler-errors:rpitit-sugg, r=estebank 2023-09-21 21:12:32 +00:00
Cargo.toml Replace in-tree rustc_apfloat with the new version of the crate 2023-07-26 10:20:15 -04:00
messages.ftl don't point at const usage site for resolution-time errors 2023-09-14 22:34:05 +02:00
README.md

README.md

For more information about how rustc works, see the rustc dev guide.