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Fail more aggressively

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This commit is contained in:
Oli Scherer 2022-02-10 14:15:20 +00:00
parent 264cd05b16
commit f42a6793ce
1 changed files with 5 additions and 4 deletions
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9
compiler/rustc_trait_selection/src/traits/codegen.rs
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@ -92,10 +92,11 @@ pub fn codegen_fulfill_obligation<'tcx>(
});
let impl_source = drain_fulfillment_cx_or_panic(&infcx, &mut fulfill_cx, impl_source);
// We may constrain the hidden types of opaque types in this query, but this is
// not information our callers need, as all that information is handled by borrowck
// and typeck.
drop(infcx.inner.borrow_mut().opaque_type_storage.take_opaque_types());
// There should be no opaque types during codegen, they all get revealed.
let opaque_types = infcx.inner.borrow_mut().opaque_type_storage.take_opaque_types();
if !opaque_types.is_empty() {
bug!("{:#?}", opaque_types);
}
debug!("Cache miss: {:?} => {:?}", trait_ref, impl_source);
Ok(&*tcx.arena.alloc(impl_source))