check Projection supertrait bounds when confirming dyn candidate

2021-12-25 22:45:05 -08:00
parent 285fa7ecd0
commit f14a5fd712
3 changed files with 53 additions and 1 deletions
--- a/compiler/rustc_trait_selection/src/traits/select/confirmation.rs
+++ b/compiler/rustc_trait_selection/src/traits/select/confirmation.rs
@@ -468,7 +468,9 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
            .predicates
            .into_iter()
        {
-            if let ty::PredicateKind::Trait(..) = super_trait.kind().skip_binder() {
+            if let ty::PredicateKind::Trait(..) | ty::PredicateKind::Projection(..) =
+                super_trait.kind().skip_binder()
+            {
                let normalized_super_trait = normalize_with_depth_to(
                    self,
                    obligation.param_env,