| /* |
| * Copyright (c) 2015, 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-8141407: Wrong evaluation of a != a when a = NaN |
| * |
| * @test |
| * @run |
| */ |
| |
| function expectNotEqualToSelf(a) { |
| Assert.assertFalse(a == a); |
| Assert.assertFalse(a === a); |
| Assert.assertTrue(a != a); |
| Assert.assertTrue(a !== a); |
| } |
| |
| // In previous versions of Nashorn this failed only on the second assignment, |
| // because only then the property slot was widened to object. |
| var a = NaN; |
| expectNotEqualToSelf(a); |
| a = {}; |
| a = NaN; |
| expectNotEqualToSelf(a); |
| |
| // We do have to do value-based rather than reference-based comparison for |
| // java.lang.Double since that class is used to represent primitive numbers |
| // in JavaScript. |
| var b = new java.lang.Double(NaN); |
| expectNotEqualToSelf(b); |
| b = {}; |
| b = new java.lang.Double(NaN); |
| expectNotEqualToSelf(b); |
| |
| // Although float is not used internally by Nashorn, java.lang.Float |
| // is handled like a primitive number in most of Nashorn, so for consistency |
| // we treat it like java.lang.Double. |
| var c = new java.lang.Float(NaN); |
| expectNotEqualToSelf(c); |
| c = {}; |
| c = new java.lang.Float(NaN); |
| expectNotEqualToSelf(c); |