diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_8/extensions/regress-465453.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_8/extensions/regress-465453.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,44 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 465453;
+var summary = 'Do not convert (undefined) to "undefined"';
+var actual = '';
+var expect = '';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+ 
+  expect = '[(new Boolean(true)), (void 0), (new Boolean(true)), ' + 
+    '(new Boolean(true)), (void 0), (void 0), "", "", (void 0)]';
+
+  jit(true);
+  var out = [];
+  for each (var e in [(new Boolean(true)), 
+                      (void 0), 
+                      (new Boolean(true)), 
+                      (new Boolean(true)), 
+                      (void 0), 
+                      (void 0), 
+                      "", 
+                      "", 
+                      (void 0)])
+             out.push(e);
+  print(actual = uneval(out));
+  jit(false);
+
+  reportCompare(expect, actual, summary);
+
+  exitFunc ('test');
+}