The Tor Browser / file revision

 /*

  * Any copyright is dedicated to the Public Domain.

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

  */

 var BUGNUMBER = 501739;

 var summary =

   "String.prototype.relace should zero the .lastIndex when called with a " +

   "global RegExp";

 print(BUGNUMBER + ": " + summary);

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

  * BEGIN TEST *

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

 var s = '0x2x4x6x8';

 var p1 = /x/g;

 p1.lastIndex = 3;

 s.replace(p1, '');

 assertEq(p1.lastIndex, 0);

 var p2 = /x/g;

 p2.lastIndex = 3;

 var c = 0;

 s.replace(p2, function(s) {

     assertEq(p2.lastIndex++, c++);

     return 'y';

 });

 assertEq(p2.lastIndex, 4);

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

 if (typeof reportCompare === "function")

   reportCompare(true, true);

 print("Tests complete");