The Tor Browser / file revision

 /*

  * Any copyright is dedicated to the Public Domain.

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

  */

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

 var BUGNUMBER = 987243;

 var summary = "Don't use .call(...) in the self-hosted Set.prototype.forEach";

 print(BUGNUMBER + ": " + summary);

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

  * BEGIN TEST *

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

 var functionCall = Function.prototype.call;

 function throwSyntaxError()

 {

   throw new SyntaxError("Function.prototype.call incorrectly called");

 }

 function lalala() {}

 Function.prototype.call = throwSyntaxError;

 new Set().forEach(throwSyntaxError);

 new Set([1]).forEach(lalala);

 new Set([{}, 4]).forEach(lalala);

 Function.prototype.call = function() { this.add(3.141592654); };

 new Set().forEach(throwSyntaxError);

 new Set(["foo"]).forEach(lalala);

 new Set([undefined, NaN]).forEach(lalala);

 var callCount = 0;

 Function.prototype.call = function() { callCount++; };

 new Set().forEach(throwSyntaxError);

 new Set([new Number]).forEach(lalala);

 new Set([true, new Boolean(false)]).forEach(lalala);

 assertEq(callCount, 0);

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

 if (typeof reportCompare === "function")

   reportCompare(true, true);

 print("Tests complete");