// Copyright (c) 2012 Ecma International.  All rights reserved.
// Ecma International makes this code available under the terms and conditions set
// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the
// "Use Terms").   Any redistribution of this code must retain the above
// copyright and this notice and otherwise comply with the Use Terms.

/*---
es5id: 15.4.4.21-9-10
description: >
    Array.prototype.reduce called with an initial value doesn't
    consider new elements added to array after it is called
includes: [runTestCase.js]
---*/

function testcase() { 
 
  function callbackfn(prevVal, curVal, idx, obj) {
    arr[5] = 6;
    arr[2] = 3;   
    return prevVal + curVal;
  }

  var arr = [1,2,,4,'5'];
  return arr.reduce(callbackfn, "") === "12345";
 }
runTestCase(testcase);
