bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Skip mentioning lang item

Browse source
This commit is contained in:
Michael Goulet 2022-08-16 23:28:20 +00:00
parent d05fea6ac4
commit c9cb19d26e
2 changed files with 12 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

9
compiler/rustc_typeck/src/check/fn_ctxt/checks.rs
View file

@ -1622,6 +1622,15 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
) {
let (traits::ExprItemObligation(def_id, hir_id, idx) | traits::ExprBindingObligation(def_id, _, hir_id, idx))
= *error.obligation.cause.code().peel_derives() else { return; };
// Skip over mentioning async lang item
if Some(def_id) == self.tcx.lang_items().from_generator_fn()
&& error.obligation.cause.span.desugaring_kind()
== Some(rustc_span::DesugaringKind::Async)
{
return;
}
let Some(unsubstituted_pred) =
self.tcx.predicates_of(def_id).instantiate_identity(self.tcx).predicates.into_iter().nth(idx) else { return; };