jdk8-mips64-public/nashorn: test/script/basic/JDK-8030197.js@1df40fe54cd6

     1 /*

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

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

     4  *

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

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

     7  * published by the Free Software Foundation.

     8  *

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

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

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

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

    13  * accompanied this code).

    14  *

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

    16  * 2 along with this work; if not, write to the Free Software Foundation,

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

    18  *

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

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

    21  * questions.

    22  */

    25 /**

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

    27  *

    28  * @test

    29  * @run

    30  */

    32 function str(n) {

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

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

    35         function(acc, v){

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

    37         }, "");

    38 }

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

    41 var str1 = str(o.NaN);

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

    43 var str2 = str(o.NaN);

    44 if (str1 != str2) {

    45     fail("NaN bit pattern changed");

    46 }

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