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Don't check for recursion in generator witness fields

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This commit is contained in:
Michael Goulet 2023-11-08 06:56:06 +00:00
parent dfb9f5df2c
commit 82a2215481
19 changed files with 102 additions and 124 deletions
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13
compiler/rustc_trait_selection/src/traits/query/normalize.rs
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@ -239,16 +239,13 @@ impl<'cx, 'tcx> FallibleTypeFolder<TyCtxt<'tcx>> for QueryNormalizer<'cx, 'tcx>
}
let generic_ty = self.interner().type_of(data.def_id);
let concrete_ty = generic_ty.instantiate(self.interner(), args);
let mut concrete_ty = generic_ty.instantiate(self.interner(), args);
self.anon_depth += 1;
if concrete_ty == ty {
bug!(
"infinite recursion generic_ty: {:#?}, args: {:#?}, \
concrete_ty: {:#?}, ty: {:#?}",
generic_ty,
args,
concrete_ty,
ty
concrete_ty = Ty::new_error_with_message(
self.interner(),
DUMMY_SP,
"recursive opaque type",
);
}
let folded_ty = ensure_sufficient_stack(|| self.try_fold_ty(concrete_ty));