/// 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-b-13.js * @description Array.prototype.forEach - deleting own property with prototype property causes prototype index property to be visited on an Array */ function testcase() { var testResult = false; function callbackfn(val, idx, obj) { if (idx === 1 && val === 1) { testResult = true; } } var arr = [0, 111]; Object.defineProperty(arr, "0", { get: function () { delete arr[1]; return 0; }, configurable: true }); try { Array.prototype[1] = 1; arr.forEach(callbackfn); return testResult; } finally { delete Array.prototype[1]; } } runTestCase(testcase);