diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_5/Regress/regress-294195-01.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_5/Regress/regress-294195-01.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,25 @@
+/* -*- 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 = 294195;
+var summary = 'Do not crash during String replace when accessing methods on backreferences';
+var actual = 'No Crash';
+var expect = 'No Crash';
+
+printBugNumber(BUGNUMBER);
+printStatus (summary);
+
+var s = 'some text sample';
+
+// this first version didn't crash
+var result = s.replace(new RegExp('(^|\\s)(text)'), (new String('$1')));
+result = result.substr(0, 1);
+reportCompare(expect, actual, inSection(1) + ' ' + summary);
+
+// the original version however did crash.
+result = s.replace(new RegExp('(^|\\s)(text)'),
+                   (new String('$1')).substr(0, 1));
+reportCompare(expect, actual, inSection(2) + ' ' + summary);