Sat, 07 Nov 2020 10:30:02 +0800
Added tag mips-jdk8u275-b01 for changeset 7c756d901f9a
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | */ |
aoqi@0 | 23 | |
aoqi@0 | 24 | /** |
aoqi@0 | 25 | * JDK-8023368: Instance __proto__ property should exist and be writable. |
aoqi@0 | 26 | * |
aoqi@0 | 27 | * @test |
aoqi@0 | 28 | * @run |
aoqi@0 | 29 | */ |
aoqi@0 | 30 | |
aoqi@0 | 31 | // check Object.setPrototypeOf extension rather than using __proto__ |
aoqi@0 | 32 | |
aoqi@0 | 33 | // function to force same callsites |
aoqi@0 | 34 | function check(obj) { |
aoqi@0 | 35 | print(obj.func()); |
aoqi@0 | 36 | print(obj.x); |
aoqi@0 | 37 | print(obj.toString()); |
aoqi@0 | 38 | } |
aoqi@0 | 39 | |
aoqi@0 | 40 | function Func() { |
aoqi@0 | 41 | } |
aoqi@0 | 42 | |
aoqi@0 | 43 | Func.prototype.func = function() { |
aoqi@0 | 44 | return "Func.prototype.func"; |
aoqi@0 | 45 | } |
aoqi@0 | 46 | |
aoqi@0 | 47 | Func.prototype.x = "hello"; |
aoqi@0 | 48 | |
aoqi@0 | 49 | var obj = new Func(); |
aoqi@0 | 50 | var obj2 = Object.create(obj); |
aoqi@0 | 51 | |
aoqi@0 | 52 | // check direct and indirect __proto__ change |
aoqi@0 | 53 | check(obj); |
aoqi@0 | 54 | check(obj2); |
aoqi@0 | 55 | Object.setPrototypeOf(obj, { |
aoqi@0 | 56 | func: function() { |
aoqi@0 | 57 | return "obj.__proto__.func @ " + __LINE__; |
aoqi@0 | 58 | }, |
aoqi@0 | 59 | x: 344 |
aoqi@0 | 60 | }); |
aoqi@0 | 61 | |
aoqi@0 | 62 | check(obj); |
aoqi@0 | 63 | check(obj2); |
aoqi@0 | 64 | |
aoqi@0 | 65 | // check indirect (1 and 2 levels) __proto__ function change |
aoqi@0 | 66 | Object.setPrototypeOf(Object.getPrototypeOf(obj), { |
aoqi@0 | 67 | toString: function() { |
aoqi@0 | 68 | return "new object.toString"; |
aoqi@0 | 69 | } |
aoqi@0 | 70 | }); |
aoqi@0 | 71 | |
aoqi@0 | 72 | check(obj); |
aoqi@0 | 73 | check(obj2); |