diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_6/extensions/regress-470310.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_6/extensions/regress-470310.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,33 @@
+/* -*- 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 = 470310;
+var summary = 'Do not assert: (uint32_t)((atoms - script->atomMap.vector + ' + 
+  '((uintN)(((regs.pc + 0)[1] << 8) | (regs.pc + 0)[2])))) < objects_->length';
+var actual = '';
+var expect = '';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+ 
+  expect = 'TypeError: 6 is not a function';
+
+  this.__defineSetter__('m', [].map);
+  function f() { for (var j = 0; j < 4; ++j) if (j == 3) m = 6; }
+  try { f(); } catch(e) { print(actual = e + ''); }
+
+  reportCompare(expect, actual, summary);
+
+  exitFunc ('test');
+}