J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | |
| 25 | /** |
| 26 | * @test |
| 27 | |
| 28 | * @bug 6490436 |
| 29 | * @summary Verify that protected constructor calls are not allowed for classfile version >= 50 (but that they are allowed for lesser versions). |
| 30 | * @author Keith McGuigan |
| 31 | */ |
| 32 | |
| 33 | public class VerifyProtectedConstructor extends ClassLoader { |
| 34 | public static void main(String argv[]) throws Exception { |
| 35 | VerifyProtectedConstructor t = new VerifyProtectedConstructor(); |
| 36 | |
| 37 | t.loadSuperClass(); |
| 38 | |
| 39 | try { |
| 40 | t.checkClassVersion(49); // should not throw VerifyError |
| 41 | } |
| 42 | catch(VerifyError e) { |
| 43 | throw new Exception("FAIL: should be no VerifyError for CF version 49"); |
| 44 | } |
| 45 | |
| 46 | try { |
| 47 | t.checkClassVersion(50); // should throw VerifyError |
| 48 | throw new Exception("FAIL: should be a VerifyError for CF version 50"); |
| 49 | } |
| 50 | catch(VerifyError e) { |
| 51 | System.out.println("PASS"); |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | private void loadSuperClass() { |
| 56 | /* -- code for super class A.A -- |
| 57 | package A; |
| 58 | public class A { |
| 59 | protected A() {} |
| 60 | } |
| 61 | */ |
| 62 | long[] cls_data = { |
| 63 | 0xcafebabe00000032L, 0x000a0a0003000707L, |
| 64 | 0x0008070009010006L, 0x3c696e69743e0100L, |
| 65 | 0x0328295601000443L, 0x6f64650c00040005L, |
| 66 | 0x010003412f410100L, 0x106a6176612f6c61L, |
| 67 | 0x6e672f4f626a6563L, 0x7400210002000300L, |
| 68 | 0x0000000001000400L, 0x0400050001000600L, |
| 69 | 0x0000110001000100L, 0x0000052ab70001b1L, |
| 70 | 0x0000000000000000L // 2 bytes extra |
| 71 | }; |
| 72 | final int EXTRA = 2; |
| 73 | byte cf_bytes[] = toByteArray(cls_data); |
| 74 | defineClass("A.A", cf_bytes, 0, cf_bytes.length - EXTRA); |
| 75 | } |
| 76 | |
| 77 | private int num_calls; |
| 78 | private static String classNames[] = { "B.B", "C.C" }; |
| 79 | |
| 80 | private void checkClassVersion(int version) throws VerifyError { |
| 81 | // This class is in violation of the spec since it accesses |
| 82 | // a protected constructor of a superclass while not being in the |
| 83 | // same package. |
| 84 | /* -- code for test class -- |
| 85 | package B; |
| 86 | public class B extends A.A { |
| 87 | public static void f() { new A.A(); } |
| 88 | } |
| 89 | */ |
| 90 | long[] cls_data = { |
| 91 | 0xcafebabe00000032L, 0x000b0a0002000807L, |
| 92 | 0x000907000a010006L, 0x3c696e69743e0100L, |
| 93 | 0x0328295601000443L, 0x6f6465010001660cL, |
| 94 | 0x0004000501000341L, 0x2f41010003422f42L, |
| 95 | 0x0021000300020000L, 0x0000000200010004L, |
| 96 | 0x0005000100060000L, 0x0011000100010000L, |
| 97 | 0x00052ab70001b100L, 0x0000000009000700L, |
| 98 | 0x0500010006000000L, 0x1500020000000000L, |
| 99 | 0x09bb000259b70001L, 0x57b1000000000000L // no extra bytes |
| 100 | }; |
| 101 | final int EXTRA = 0; |
| 102 | |
| 103 | byte cf_bytes[] = toByteArray(cls_data); |
| 104 | |
| 105 | // set version |
| 106 | cf_bytes[7] = (byte)version; |
| 107 | |
| 108 | // Change B.B to C.C, D.D, ... for subsequent calls so we can call this |
| 109 | // multiple times and define different classes. |
| 110 | cf_bytes[61] += num_calls; |
| 111 | cf_bytes[63] += num_calls; |
| 112 | String name = classNames[num_calls]; |
| 113 | num_calls++; |
| 114 | |
| 115 | Class c = defineClass(name, cf_bytes, 0, cf_bytes.length - EXTRA); |
| 116 | |
| 117 | try { c.newInstance(); } // to force linking, thus verification |
| 118 | catch(InstantiationException e) {} |
| 119 | catch(IllegalAccessException e) {} |
| 120 | } |
| 121 | |
| 122 | static private byte[] toByteArray(long arr[]) { |
| 123 | // convert long array to byte array |
| 124 | java.nio.ByteBuffer bbuf = java.nio.ByteBuffer.allocate(arr.length * 8); |
| 125 | bbuf.asLongBuffer().put(java.nio.LongBuffer.wrap(arr)); |
| 126 | return bbuf.array(); |
| 127 | } |
| 128 | } |