Mon, 07 Dec 2015 13:15:47 -0800
Merge
1 /*
2 * Copyright (c) 2010, 2013, 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 */
24 /**
25 * JDK-8023368: Instance __proto__ property should exist and be writable.
26 *
27 * @test
28 * @run
29 */
31 // function to force same callsites
32 function check(obj) {
33 print(obj.func());
34 print(obj.x);
35 print(obj.toString());
36 }
38 function Func() {
39 }
41 Func.prototype.func = function() {
42 return "Func.prototype.func";
43 }
45 Func.prototype.x = "hello";
47 var obj = new Func();
48 var obj2 = Object.create(obj);
50 // check direct and indirect __proto__ change
51 check(obj);
52 check(obj2);
53 obj.__proto__ = {
54 func: function() {
55 return "obj.__proto__.func @ " + __LINE__;
56 },
57 x: 344
58 };
60 check(obj);
61 check(obj2);
63 // check indirect (1 and 2 levels) __proto__ function change
64 obj.__proto__.__proto__ = {
65 toString: function() {
66 return "new object.toString";
67 }
68 };
70 check(obj);
71 check(obj2);