diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_5/Regress/regress-281606.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_5/Regress/regress-281606.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,46 @@
+/* -*- 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 = 281606;
+var summary = 'l instanceof r throws TypeError if r does not support [[HasInstance]]';
+var actual = '';
+var expect = '';
+var status;
+
+printBugNumber(BUGNUMBER);
+printStatus (summary);
+ 
+var o = {};
+
+status = summary + ' ' + inSection(1) + ' o instanceof Math ';
+expect = 'TypeError';
+try
+{
+  if (o instanceof Math)
+  {
+  }
+  actual = 'No Error';
+}
+catch(e)
+{
+  actual = e.name;
+}
+reportCompare(expect, actual, status);
+
+status = summary + ' ' + inSection(2) + ' o instanceof o ';
+expect = 'TypeError';
+try
+{
+  if (o instanceof o)
+  {
+  }
+  actual = 'No Error';
+}
+catch(e)
+{
+  actual = e.name;
+}
+reportCompare(expect, actual, status);