diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma_3/RegExp/regress-119909.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma_3/RegExp/regress-119909.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,58 @@
+/* -*- 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/. */
+
+/*
+ *
+ * Date:    14 Jan 2002
+ * SUMMARY: Shouldn't crash on regexps with many nested parentheses
+ * See http://bugzilla.mozilla.org/show_bug.cgi?id=119909
+ *
+ */
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 119909;
+var summary = "Shouldn't crash on regexps with many nested parentheses";
+var NO_BACKREFS = false;
+var DO_BACKREFS = true;
+
+
+//--------------------------------------------------
+test();
+//--------------------------------------------------
+
+
+function test()
+{
+  enterFunc('test');
+  printBugNumber(BUGNUMBER);
+  printStatus(summary);
+
+  testThis(500, NO_BACKREFS, 'hello', 'goodbye');
+  testThis(500, DO_BACKREFS, 'hello', 'goodbye');
+
+  reportCompare('No Crash', 'No Crash', '');
+
+  exitFunc('test');
+}
+
+
+/*
+ * Creates a regexp pattern like (((((((((hello)))))))))
+ * and tests str.search(), str.match(), str.replace()
+ */
+function testThis(numParens, doBackRefs, strOriginal, strReplace)
+{
+  var openParen = doBackRefs? '(' : '(?:';
+  var closeParen = ')';
+  var pattern = '';
+ 
+  for (var i=0; i<numParens; i++) {pattern += openParen;}
+  pattern += strOriginal;
+  for (i=0; i<numParens; i++) {pattern += closeParen;}
+  var re = new RegExp(pattern);
+
+  var res = strOriginal.search(re);
+  res = strOriginal.match(re);
+  res = strOriginal.replace(re, strReplace);
+}