diff options
| -rw-r--r-- | compiler/rustc_trait_selection/src/solve/normalize.rs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/compiler/rustc_trait_selection/src/solve/normalize.rs b/compiler/rustc_trait_selection/src/solve/normalize.rs index 524bac19547..67e6f5246c8 100644 --- a/compiler/rustc_trait_selection/src/solve/normalize.rs +++ b/compiler/rustc_trait_selection/src/solve/normalize.rs @@ -20,11 +20,15 @@ pub(crate) fn deeply_normalize<'tcx, T: TypeFoldable<TyCtxt<'tcx>>>( at: At<'_, 'tcx>, value: T, ) -> Result<T, Vec<FulfillmentError<'tcx>>> { + assert!(!value.has_escaping_bound_vars()); deeply_normalize_with_skipped_universes(at, value, vec![]) } /// Deeply normalize all aliases in `value`. This does not handle inference and expects /// its input to be already fully resolved. +/// +/// Additionally takes a list of universes which represents the binders which have been +/// entered before passing `value` to the function. pub(crate) fn deeply_normalize_with_skipped_universes<'tcx, T: TypeFoldable<TyCtxt<'tcx>>>( at: At<'_, 'tcx>, value: T, |