aoqi@0: /*
aoqi@0:  * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: /**
aoqi@0:  * JDK-8023368: Instance __proto__ property should exist and be writable.
aoqi@0:  *
aoqi@0:  * @test
aoqi@0:  * @run
aoqi@0:  */
aoqi@0: 
aoqi@0: // check Object.setPrototypeOf extension rather than using __proto__
aoqi@0: 
aoqi@0: // function to force same callsites
aoqi@0: function check(obj) {
aoqi@0:     print(obj.func());
aoqi@0:     print(obj.x);
aoqi@0:     print(obj.toString());
aoqi@0: }
aoqi@0: 
aoqi@0: function Func() {
aoqi@0: }
aoqi@0: 
aoqi@0: Func.prototype.func = function() {
aoqi@0:     return "Func.prototype.func";
aoqi@0: }
aoqi@0: 
aoqi@0: Func.prototype.x = "hello";
aoqi@0: 
aoqi@0: var obj = new Func();
aoqi@0: var obj2 = Object.create(obj);
aoqi@0: 
aoqi@0: // check direct and indirect __proto__ change
aoqi@0: check(obj);
aoqi@0: check(obj2);
aoqi@0: Object.setPrototypeOf(obj, {
aoqi@0:    func: function() {
aoqi@0:         return "obj.__proto__.func @ " + __LINE__;
aoqi@0:    },
aoqi@0:    x: 344
aoqi@0: });
aoqi@0: 
aoqi@0: check(obj);
aoqi@0: check(obj2);
aoqi@0: 
aoqi@0: // check indirect (1 and 2 levels) __proto__ function change
aoqi@0: Object.setPrototypeOf(Object.getPrototypeOf(obj), {
aoqi@0:     toString: function() {
aoqi@0:         return "new object.toString";
aoqi@0:     }
aoqi@0: });
aoqi@0: 
aoqi@0: check(obj);
aoqi@0: check(obj2);