// 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: 15.4.4.15-1-5
description: Array.prototype.lastIndexOf applied to number primitive
includes: [runTestCase.js]
---*/

function testcase() {

        try {
                Number.prototype[1] = isNaN;
                Number.prototype.length = 2;
                return 1 === Array.prototype.lastIndexOf.call(5, isNaN);
            } finally {
                delete Number.prototype[1];
                delete Number.prototype.length;
            }
    }
runTestCase(testcase);
