1 /* 2 * Copyright (c) 2007, 2015, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 25 /** 26 * @test 27 28 * @bug 6490436 29 * @summary Verify that protected constructor calls are not allowed for any classfile versions in either verifier. 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 throw new Exception("FAIL: should be a VerifyError for CF version 49"); 42 } 43 catch(VerifyError e) { 44 System.out.println("PASS for CF version 49"); 45 } 46 47 try { 48 t.checkClassVersion(50); // should throw VerifyError 49 throw new Exception("FAIL: should be a VerifyError for CF version 50"); 50 } 51 catch(VerifyError e) { 52 System.out.println("PASS"); 53 } 54 } 55 56 private void loadSuperClass() { 57 /* -- code for super class A.A -- 58 package A; 59 public class A { 60 protected A() {} 61 } 62 */ 63 long[] cls_data = { 64 0xcafebabe00000032L, 0x000a0a0003000707L, 65 0x0008070009010006L, 0x3c696e69743e0100L, 66 0x0328295601000443L, 0x6f64650c00040005L, 67 0x010003412f410100L, 0x106a6176612f6c61L, 68 0x6e672f4f626a6563L, 0x7400210002000300L, 69 0x0000000001000400L, 0x0400050001000600L, 70 0x0000110001000100L, 0x0000052ab70001b1L, 71 0x0000000000000000L // 2 bytes extra 72 }; 73 final int EXTRA = 2; 74 byte cf_bytes[] = toByteArray(cls_data); 75 defineClass("A.A", cf_bytes, 0, cf_bytes.length - EXTRA); 76 } 77 78 private int num_calls; 79 private static String classNames[] = { "B.B", "C.C" }; 80 81 private void checkClassVersion(int version) throws VerifyError { 82 // This class is in violation of the spec since it accesses 83 // a protected constructor of a superclass while not being in the 84 // same package. 85 /* -- code for test class -- 86 package B; 87 public class B extends A.A { 88 public static void f() { new A.A(); } 89 } 90 */ 91 long[] cls_data = { 92 0xcafebabe00000032L, 0x000b0a0002000807L, 93 0x000907000a010006L, 0x3c696e69743e0100L, 94 0x0328295601000443L, 0x6f6465010001660cL, 95 0x0004000501000341L, 0x2f41010003422f42L, 96 0x0021000300020000L, 0x0000000200010004L, 97 0x0005000100060000L, 0x0011000100010000L, 98 0x00052ab70001b100L, 0x0000000009000700L, 99 0x0500010006000000L, 0x1500020000000000L, 100 0x09bb000259b70001L, 0x57b1000000000000L // no extra bytes 101 }; 102 final int EXTRA = 0; 103 104 byte cf_bytes[] = toByteArray(cls_data); 105 106 // set version 107 cf_bytes[7] = (byte)version; 108 109 // Change B.B to C.C, D.D, ... for subsequent calls so we can call this 110 // multiple times and define different classes. 111 cf_bytes[61] += num_calls; 112 cf_bytes[63] += num_calls; 113 String name = classNames[num_calls]; 114 num_calls++; 115 116 Class c = defineClass(name, cf_bytes, 0, cf_bytes.length - EXTRA); 117 118 try { c.newInstance(); } // to force linking, thus verification 119 catch(InstantiationException e) {} 120 catch(IllegalAccessException e) {} 121 } 122 123 static private byte[] toByteArray(long arr[]) { 124 // convert long array to byte array 125 java.nio.ByteBuffer bbuf = java.nio.ByteBuffer.allocate(arr.length * 8); 126 bbuf.asLongBuffer().put(java.nio.LongBuffer.wrap(arr)); 127 return bbuf.array(); 128 } 129 }