add AliasEq to PredicateKind

2023-02-10 13:43:29 +00:00
parent 9b8dbd558c
commit 23ab2464be
25 changed files with 80 additions and 5 deletions
--- a/compiler/rustc_trait_selection/src/solve/fulfill.rs
+++ b/compiler/rustc_trait_selection/src/solve/fulfill.rs
@@ -73,6 +73,11 @@ impl<'tcx> TraitEngine<'tcx> for FulfillmentCtxt<'tcx> {
                                        MismatchedProjectionTypes { err: TypeError::Mismatch },
                                    )
                                }
+                                ty::PredicateKind::AliasEq(_, _) => {
+                                    FulfillmentErrorCode::CodeProjectionError(
+                                        MismatchedProjectionTypes { err: TypeError::Mismatch },
+                                    )
+                                }
                                ty::PredicateKind::Subtype(pred) => {
                                    let (a, b) = infcx.instantiate_binder_with_placeholders(
                                        goal.predicate.kind().rebind((pred.a, pred.b)),