/*

 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 * 

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 * 

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 * 

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 * 

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/**

 * JDK-8030197: Nashorn: Object.defineProperty() can be lured to change fixed NaN property

 *

 * @test

 * @run

 */

function str(n) {

    var a = new Uint8Array(new Float64Array([n]).buffer);

    return Array.apply(null, a).reduceRight(

        function(acc, v){

            return acc + (v < 10 ? "0" : "") + v.toString(16);

        }, "");

}

var o = Object.defineProperty({}, "NaN", { value: NaN })

var str1 = str(o.NaN);

Object.defineProperty(o, "NaN", { value: 0/0 })

var str2 = str(o.NaN);

if (str1 != str2) {

    fail("NaN bit pattern changed");

}