// Copyright (c) 2012 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-array.prototype.map
es5id: 15.4.4.19-8-c-i-2
description: >
    Array.prototype.map - element to be retrieved is own data property
    on an Array
---*/

        var kValue = {};

        function callbackfn(val, idx, obj) {
            if (idx === 0) {
                return val === kValue;
            }
            return false;
        }

        var arr = [kValue];

        var newArr = arr.map(callbackfn);

assert.sameValue(newArr[0], true, 'newArr[0]');
