diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_5/Regress/regress-501124.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_5/Regress/regress-501124.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,45 @@
+/* -*- 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 = 501124;
+var summary = 'Crypotographic login routines';
+var actual = '';
+var expect = '';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+
+  jit(true);
+
+  var hexVal = "00000000000000000000000000000000DEADBABE";
+  var nblk   = (((hexVal.length/2) + 8) >> 6) + 1;
+
+  var blks = new Array(nblk * 16);
+
+  for(var i = 0; i < nblk * 16; i++)
+    blks[i] = 0;
+
+  for(i = 0; i < hexVal.length; i++) {
+    blks[i >> 3] |= ("0x"+hexVal.charAt(i)) << (28 - (i % 8) * 4);
+  }
+
+  expect = '0,0,0,0,-559039810,0,0,0,0,0,0,0,0,0,0,0';
+  actual   = blks + '';
+
+  jit(false);
+
+  reportCompare(expect, actual, summary);
+
+  exitFunc ('test');
+}