| /* |
| * 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"); |
| } |