visit and fold ty::ref

Author: ouz-a

compiler/stable_mir/src/fold.rs

@@ -148,7 +148,10 @@ impl Foldable for RigidTy {
             }
             RigidTy::Slice(inner) => *inner = inner.fold(folder)?,
             RigidTy::RawPtr(ty, _) => *ty = ty.fold(folder)?,
-            RigidTy::Ref(_, ty, _) => *ty = ty.fold(folder)?,
+            RigidTy::Ref(reg, ty, _) => {
+                *reg = reg.fold(folder)?;
+                *ty = ty.fold(folder)?
+            }
             RigidTy::FnDef(_, args) => *args = args.fold(folder)?,
             RigidTy::FnPtr(sig) => *sig = sig.fold(folder)?,
             RigidTy::Closure(_, args) => *args = args.fold(folder)?,

compiler/stable_mir/src/visitor.rs

@@ -167,7 +167,10 @@ impl Visitable for RigidTy {
             }
             RigidTy::Slice(inner) => inner.visit(visitor),
             RigidTy::RawPtr(ty, _) => ty.visit(visitor),
-            RigidTy::Ref(_, ty, _) => ty.visit(visitor),
+            RigidTy::Ref(reg, ty, _) => {
+                reg.visit(visitor);
+                ty.visit(visitor)
+            }
             RigidTy::FnDef(_, args) => args.visit(visitor),
             RigidTy::FnPtr(sig) => sig.visit(visitor),
             RigidTy::Closure(_, args) => args.visit(visitor),