bjoernager/rust
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Rollup merge of #84168 - cjgillot:asi, r=davidtwco

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Lower async fn in traits.

An error is already created by AST validation.

Fixes #84149
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Dylan DPC 2021-04-19 22:00:06 +02:00 • committed by GitHub
commit e5b5745db1
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3 changed files with 32 additions and 4 deletions
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14
compiler/rustc_ast_lowering/src/item.rs
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@ -836,9 +836,17 @@ impl<'hir> LoweringContext<'_, 'hir> {
(generics, hir::TraitItemKind::Fn(sig, hir::TraitFn::Required(names)))
}
AssocItemKind::Fn(box FnKind(_, ref sig, ref generics, Some(ref body))) => {
let body_id = self.lower_fn_body_block(i.span, &sig.decl, Some(body));
let (generics, sig) =
self.lower_method_sig(generics, sig, trait_item_def_id, false, None, i.id);
let asyncness = sig.header.asyncness;
let body_id =
self.lower_maybe_async_body(i.span, &sig.decl, asyncness, Some(&body));
let (generics, sig) = self.lower_method_sig(
generics,
sig,
trait_item_def_id,
false,
asyncness.opt_return_id(),
i.id,
);
(generics, hir::TraitItemKind::Fn(sig, hir::TraitFn::Provided(body_id)))
}
AssocItemKind::TyAlias(box TyAliasKind(_, ref generics, ref bounds, ref default)) => {