diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_5/Regress/regress-280769-2.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_5/Regress/regress-280769-2.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,44 @@
+// |reftest| skip-if(Android) silentfail
+/* -*- 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 = 280769;
+var summary = 'Do not overflow 64K boundary in treeDepth';
+var actual = 'No Crash';
+var expect = /No Crash|InternalError: allocation size overflow/;
+var status;
+var result;
+
+printBugNumber(BUGNUMBER);
+printStatus (summary);
+
+expectExitCode(0);
+expectExitCode(5);
+
+status = summary + ' ' + inSection(1) + ' (new RegExp("0|...|99999") ';
+
+try
+{
+  var N = 100 * 1000;
+  var a = new Array(N);
+  for (var i = 0; i != N; ++i) {
+    a[i] = i;
+  }
+  var str = a.join('|');  // str is 0|1|2|3|...|<printed value of N -1>
+  var re = new RegExp(str);
+  re.exec(N - 1);
+}
+catch(ex)
+{
+  actual = ex + '';
+}
+
+print('Done: ' + actual);
+
+reportMatch(expect, actual, summary);
+
+
+