diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_8_1/extensions/regress-466905-04.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_8_1/extensions/regress-466905-04.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,49 @@
+/* -*- 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 = 466905;
+var summary = 'Prototypes of sandboxed arrays';
+var actual = '';
+var expect = '';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+
+  if (typeof evalcx != 'function')
+  {
+    expect = actual = 'Test skipped: requires evalcx support';
+  }
+  else
+  {
+    expect = true;
+
+    function createArray()
+    {
+      var a;                
+      for (var i = 0; i < 10; i++)
+        a = [1, 2, 3, 4, 5];
+      return a;
+    }
+
+    var sandbox = evalcx("lazy");
+    sandbox.createArray = createArray;
+    var p1 = Object.getPrototypeOf(createArray());
+    var p2 = Object.getPrototypeOf(evalcx("createArray()", sandbox));
+    print(actual = (p1 === p2));
+  }
+
+  reportCompare(expect, actual, summary);
+
+  exitFunc ('test');
+}