patch2.diff

diff --git a/compiler/rustc_typeck/src/astconv/mod.rs b/compiler/rustc_typeck/src/astconv/mod.rs
index ab79dcd4161..20b178ca6ad 100644
--- a/compiler/rustc_typeck/src/astconv/mod.rs
+++ b/compiler/rustc_typeck/src/astconv/mod.rs
@@ -2364,13 +2364,12 @@ pub fn res_to_ty(
                 let substs = self.ast_path_substs_for_ty(span, did, item_segment.0);
                 self.normalize_ty(span, tcx.mk_opaque(did, substs))
             }
-            Res::Def(DefKind::TyAlias, did) => {
-                let item_segment = path.segments.split_last().unwrap();
-                let substs = self.ast_path_substs_for_ty(span, did, item_segment.0);
-                self.normalize_ty(span, tcx.mk_ty_alias(did, substs))
-            }
             Res::Def(
-                DefKind::Enum | DefKind::Struct | DefKind::Union | DefKind::ForeignTy,
+                DefKind::Enum
+                | DefKind::Struct
+                | DefKind::Union
+                | DefKind::ForeignTy
+                | DefKind::TyAlias,
                 did,
             ) => {
                 assert_eq!(opt_self_ty, None);