From cd4e637ae4113d4c49a2e5c533b5bf48fbf7cc6e Mon Sep 17 00:00:00 2001
From: John Clements <clements@racket-lang.org>
Date: Fri, 7 Jun 2013 17:14:06 -0700
Subject: [PATCH] fixed bug in fold's traversal of cast exprs

---
 src/libsyntax/fold.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libsyntax/fold.rs b/src/libsyntax/fold.rs
index f8671623992..85519bd2671 100644
--- a/src/libsyntax/fold.rs
+++ b/src/libsyntax/fold.rs
@@ -545,7 +545,7 @@ pub fn noop_fold_expr(e: &Expr_, fld: @ast_fold) -> Expr_ {
         ExprDoBody(f) => ExprDoBody(fld.fold_expr(f)),
         ExprLit(_) => (*e).clone(),
         ExprCast(expr, ref ty) => {
-            ExprCast(fld.fold_expr(expr), (*ty).clone())
+            ExprCast(fld.fold_expr(expr), fld.fold_ty(ty))
         }
         ExprAddrOf(m, ohs) => ExprAddrOf(m, fld.fold_expr(ohs)),
         ExprIf(cond, ref tr, fl) => {