diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_5/extensions/regress-479551.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_5/extensions/regress-479551.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 = 479551;
+var summary = 'Do not assert: (cx)->requestDepth || (cx)->thread == (cx)->runtime->gcThread';
+var actual = '';
+var expect = '';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+
+  if (typeof shapeOf != 'function')
+  {
+    print(expect = actual = 'Test skipped: requires shell');
+  }
+  else
+  {
+    jit(true);
+
+    var o = {a:3, b:2};
+    shapeOf(o);
+    var p = {};
+    p.a =3;
+    p.b=2;
+    shapeOf(p);
+
+    jit(false);
+
+  }
+  reportCompare(expect, actual, summary);
+
+  exitFunc ('test');
+}