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 }