bjoernager/rust
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Point to argument/return type instead of the whole function header

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This commit is contained in:
Oli Scherer 2023-06-15 14:34:32 +00:00
parent bae645451e
commit 12243ec415
11 changed files with 100 additions and 25 deletions
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3
compiler/rustc_infer/src/infer/error_reporting/note_and_explain.rs
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@ -260,7 +260,8 @@ impl<T> Trait<T> for X {
(ty::Alias(ty::Opaque, alias), _) | (_, ty::Alias(ty::Opaque, alias)) if alias.def_id.is_local() && matches!(tcx.def_kind(body_owner_def_id), DefKind::AssocFn | DefKind::AssocConst) => {
if tcx.is_type_alias_impl_trait(alias.def_id) {
if !tcx.opaque_types_defined_by(body_owner_def_id.expect_local()).contains(&alias.def_id.expect_local()) {
diag.span_note(tcx.def_span(body_owner_def_id), "\
let sp = tcx.def_ident_span(body_owner_def_id).unwrap_or_else(|| tcx.def_span(body_owner_def_id));
diag.span_note(sp, "\
this item must have the opaque type in its signature \
in order to be able to register hidden types");
}