diff options
| -rw-r--r-- | compiler/rustc_trait_selection/src/traits/outlives_bounds.rs | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/compiler/rustc_trait_selection/src/traits/outlives_bounds.rs b/compiler/rustc_trait_selection/src/traits/outlives_bounds.rs index 5b8d9e7f0f7..e01a57ea4fe 100644 --- a/compiler/rustc_trait_selection/src/traits/outlives_bounds.rs +++ b/compiler/rustc_trait_selection/src/traits/outlives_bounds.rs @@ -56,8 +56,9 @@ impl<'a, 'tcx: 'a> InferCtxtExt<'a, 'tcx> for InferCtxt<'tcx> { let ty = self.resolve_vars_if_possible(ty); let ty = OpportunisticRegionResolver::new(self).fold_ty(ty); - // We must avoid processing unconstrained lifetime variables in implied - // bounds. See #110161 for context. + // We do not expect existential variables in implied bounds. + // We may however encounter unconstrained lifetime variables in invalid + // code. See #110161 for context. assert!(!ty.has_non_region_infer()); if ty.needs_infer() { self.tcx.sess.delay_span_bug( |