WIP

Author: oli-obk

compiler/rustc_trait_selection/src/traits/select/confirmation.rs

@@ -195,7 +195,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
         obligations.extend(
             self.infcx
                 .at(&obligation.cause, obligation.param_env)
-                .eq(DefineOpaqueTypes::No, placeholder_trait_predicate, candidate)
+                .eq(DefineOpaqueTypes::Yes, placeholder_trait_predicate, candidate)
                 .map(|InferOk { obligations, .. }| obligations)
                 .map_err(|_| Unimplemented)?,
         );

compiler/rustc_trait_selection/src/traits/select/mod.rs

@@ -1752,7 +1752,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
         let is_match = self
             .infcx
             .at(&obligation.cause, obligation.param_env)
-            .eq(DefineOpaqueTypes::No, obligation.predicate, infer_projection)
+            .eq(DefineOpaqueTypes::Yes, obligation.predicate, infer_projection)
             .is_ok_and(|InferOk { obligations, value: () }| {
                 self.evaluate_predicates_recursively(
                     TraitObligationStackList::empty(&ProvisionalEvaluationCache::default()),