diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma_3/Regress/regress-469937.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma_3/Regress/regress-469937.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,27 @@
+/* -*- 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 = 469937;
+var summary = 'Properties without DontEnum are sometimes not enumerated';
+var actual = false;
+var expect = true;
+
+printBugNumber(BUGNUMBER);
+printStatus (summary);
+ 
+(function(){ 
+    var o = { }
+    o.PageLeft = 1;
+    o.Rect2 = 6;
+    delete o.Rect2;
+    for (var p in o);
+    o.Rect3 = 7;
+    found = false;
+    for (var p in o) if (p == 'Rect3') found = true;
+    actual = found;    
+})();
+
+reportCompare(expect, actual, summary);