The Tor Browser / file revision

 /*

  * Any copyright is dedicated to the Public Domain.

  * http://creativecommons.org/licenses/publicdomain/

  */

 //-----------------------------------------------------------------------------

 var BUGNUMBER = 547087;

 var summary = 'JS_EnumerateStandardClasses uses wrong attributes for undefined';

 print(BUGNUMBER + ": " + summary);

 /**************

  * BEGIN TEST *

  **************/

 for (var p in this);

 assertEq(Object.getOwnPropertyDescriptor(this, "undefined").writable, false);

 /******************************************************************************/

 reportCompare(true, true);

 print("All tests passed!");