From f42a6793ce3d32a8d414519b8ec82141f7996479 Mon Sep 17 00:00:00 2001 From: Oli Scherer Date: Thu, 10 Feb 2022 14:15:20 +0000 Subject: [PATCH] Fail more aggressively --- compiler/rustc_trait_selection/src/traits/codegen.rs | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/compiler/rustc_trait_selection/src/traits/codegen.rs b/compiler/rustc_trait_selection/src/traits/codegen.rs index 22182faa0c6..4b6784aee97 100644 --- a/compiler/rustc_trait_selection/src/traits/codegen.rs +++ b/compiler/rustc_trait_selection/src/traits/codegen.rs @@ -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))