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: // check that we cannot create __proto__ cycle
sundar@513: load("nashorn:mozilla_compat.js");
sundar@513: 
sundar@513: var obj = {};
sundar@513: var obj2 = Object.create(obj);
sundar@513: 
sundar@513: // attempt to create __proto__ cycle
sundar@513: try {
sundar@513:     obj.__proto__ = obj2;
sundar@513:     fail("Should have thrown TypeError");
sundar@513: } catch (e) {
sundar@513:     if (! (e instanceof TypeError)) {
sundar@513:         fail("Expected TypeError, got " + e);
sundar@513:     }
sundar@513:     print(e);
sundar@513: }