Pull out logic from #111131, plus some new logic in EvalCtxt::normalize_opaque_type

Co-authored-by: lcnr <rust@lcnr.de>
2023-05-09 18:56:43 +00:00
parent 7664dfe433
commit 4d80b8090c
13 changed files with 122 additions and 43 deletions
--- a/compiler/rustc_trait_selection/src/solve/fulfill.rs
+++ b/compiler/rustc_trait_selection/src/solve/fulfill.rs
@@ -133,12 +133,14 @@ impl<'tcx> TraitEngine<'tcx> for FulfillmentCtxt<'tcx> {
                                | ty::PredicateKind::ObjectSafe(_)
                                | ty::PredicateKind::ClosureKind(_, _, _)
                                | ty::PredicateKind::ConstEvaluatable(_)
-                                | ty::PredicateKind::TypeWellFormedFromEnv(_)
                                | ty::PredicateKind::Ambiguous => {
                                    FulfillmentErrorCode::CodeSelectionError(
                                        SelectionError::Unimplemented,
                                    )
                                }
+                                ty::PredicateKind::TypeWellFormedFromEnv(_) => {
+                                    bug!("unexpected goal: {goal:?}")
+                                }
                            },
                            root_obligation: obligation,
                        });