sundar@513: /*
sundar@513:  * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
sundar@513:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
sundar@513:  *
sundar@513:  * This code is free software; you can redistribute it and/or modify it
sundar@513:  * under the terms of the GNU General Public License version 2 only, as
sundar@513:  * published by the Free Software Foundation.
sundar@513:  *
sundar@513:  * This code is distributed in the hope that it will be useful, but WITHOUT
sundar@513:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
sundar@513:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
sundar@513:  * version 2 for more details (a copy is included in the LICENSE file that
sundar@513:  * accompanied this code).
sundar@513:  *
sundar@513:  * You should have received a copy of the GNU General Public License version
sundar@513:  * 2 along with this work; if not, write to the Free Software Foundation,
sundar@513:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
sundar@513:  *
sundar@513:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
sundar@513:  * or visit www.oracle.com if you need additional information or have any
sundar@513:  * questions.
sundar@513:  */
sundar@513: 
sundar@513: /**
sundar@513:  * JDK-8023368: Instance __proto__ property should exist and be writable.
sundar@513:  *
sundar@513:  * @test
sundar@513:  * @run
sundar@513:  */
sundar@513: 
sundar@513: // function to force same callsites
sundar@513: function check(obj) {
sundar@513:     print(obj.func());
sundar@513:     print(obj.x);
sundar@513:     print(obj.toString());
sundar@513: }
sundar@513: 
sundar@513: function Func() {
sundar@513: }
sundar@513: 
sundar@513: Func.prototype.func = function() {
sundar@513:     return "Func.prototype.func";
sundar@513: }
sundar@513: 
sundar@513: Func.prototype.x = "hello";
sundar@513: 
sundar@513: var obj = new Func();
sundar@513: var obj2 = Object.create(obj);
sundar@513: 
sundar@513: // check direct and indirect __proto__ change
sundar@513: check(obj);
sundar@513: check(obj2);
sundar@513: obj.__proto__ = {
sundar@513:    func: function() {
sundar@513:         return "obj.__proto__.func @ " + __LINE__;
sundar@513:    },
sundar@513:    x: 344
sundar@513: };
sundar@513: 
sundar@513: check(obj);
sundar@513: check(obj2);
sundar@513: 
sundar@513: // check indirect (1 and 2 levels) __proto__ function change
sundar@513: obj.__proto__.__proto__ = {
sundar@513:     toString: function() {
sundar@513:         return "new object.toString";
sundar@513:     }
sundar@513: };
sundar@513: 
sundar@513: check(obj);
sundar@513: check(obj2);