/// 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 ch10/10.2/10.2.1/10.2.1.1/10.2.1.1.3/10.2.1.1.3-4-16-s.js
 * @description Strict Mode - TypeError is thrown when changing the value of a Value Property of the Global Object under strict mode (NaN)
 * @onlyStrict
 */


function testcase() {
        "use strict";

        try {
            NaN = 12;
            return false;
        } catch (e) {
            return e instanceof TypeError;
        }
    }
runTestCase(testcase);