Clarify DerivedObligationCause may hold alias id

2023-02-16 21:55:53 +00:00
parent a1468ae00d
commit 55d449fe0a
8 changed files with 16 additions and 12 deletions
--- a/compiler/rustc_trait_selection/src/traits/select/confirmation.rs
+++ b/compiler/rustc_trait_selection/src/traits/select/confirmation.rs
@@ -1189,7 +1189,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
            let cause = obligation.derived_cause(|derived| {
                ImplDerivedObligation(Box::new(ImplDerivedObligationCause {
                    derived,
-                    impl_def_id,
+                    impl_or_alias_def_id: impl_def_id,
                    impl_def_predicate_index: None,
                    span: obligation.cause.span,
                }))