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Turns out opaque types can have hidden types registered during mir validation

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This commit is contained in:
Oli Scherer 2023-07-27 08:23:06 +00:00
parent 52bdc37727
commit 99a9a63ca6
2 changed files with 25 additions and 6 deletions
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15
compiler/rustc_const_eval/src/util/compare_types.rs
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@ -57,12 +57,15 @@ pub fn is_subtype<'tcx>(
// we would get unification errors because we're unable to look into opaque types,
// even if they're constrained in our current function.
for (key, ty) in infcx.take_opaque_types() {
span_bug!(
ty.hidden_type.span,
"{}, {}",
tcx.type_of(key.def_id).instantiate(tcx, key.args),
ty.hidden_type.ty
);
let hidden_ty = tcx.type_of(key.def_id).instantiate(tcx, key.args);
if hidden_ty != ty.hidden_type.ty {
span_bug!(
ty.hidden_type.span,
"{}, {}",
tcx.type_of(key.def_id).instantiate(tcx, key.args),
ty.hidden_type.ty
);
}
}
errors.is_empty()
}