/// 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. /** * @path ch15/15.4/15.4.4/15.4.4.18/15.4.4.18-7-5.js * @description Array.prototype.forEach visits deleted element in array after the call when same index is also present in prototype */ function testcase() { var callCnt = 0; function callbackfn(val, idx, obj) { delete arr[4]; callCnt++; } Array.prototype[4] = 5; var arr = [1,2,3,4,5]; arr.forEach(callbackfn) delete Array.prototype[4]; if( callCnt === 5) return true; } runTestCase(testcase);