diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_8/extensions/regress-445818.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_8/extensions/regress-445818.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,41 @@
+// |reftest| skip
+/* -*- 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 = 445818;
+var summary = 'Do not crash with threads';
+var actual = '';
+var expect = '';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+printBugNumber(BUGNUMBER);
+printStatus (summary);
+ 
+if (typeof scatter == 'undefined')
+{
+  print(expect = actual = 'Test skipped. scatter not defined');
+}
+else
+{
+  var array = [{}, {}, {}, {}];
+
+  function test() {
+    for (var i = 0; i != 42*42*42; ++i) {
+      var obj = array[i % array.length];
+      obj["a"+i] = 1;
+      var tmp = {}; 
+      tmp["a"+i] = 2; 
+    }
+  }
+
+  scatter([test, test, test, test]);
+}
+
+reportCompare(expect, actual, summary);