1 /*
2 * Copyright (c) 2017, 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 * @test
26 * @bug 8046171
27 * @summary Test access to private methods between nestmates where there
28 * is an inheritance hierarchy and we invoke private methods that
29 * exist in specific classes in the hierarchy.
30 * @compile TestInvokeHierarchy.java
31 * @compile ExternalSuper.jcod ExternalSub.jcod
32 * @run main TestInvokeHierarchy
33 */
34
35 public class TestInvokeHierarchy {
36
37 static class NestedA extends ExternalSuper {
38 static final String ID = "NestedA::priv_invoke";
39 private String priv_invoke() {
40 return ID;
41 }
42 static void checkA(NestedA a) throws Throwable {
43 verifyEquals(a.priv_invoke(), NestedA.ID);
44 }
45 }
46
47 static class NestedB extends NestedA {
48 static final String ID = "NestedB::priv_invoke";
49 private String priv_invoke() {
50 return ID;
51 }
52 static void checkA(NestedA a) throws Throwable {
53 verifyEquals(a.priv_invoke(), NestedA.ID);
54 }
55 }
56
57 static class NestedC extends NestedB {
58 static final String ID = "NestedC::priv_invoke";
59 private String priv_invoke() {
60 return ID;
61 }
62 static void checkA(NestedA a) throws Throwable {
63 verifyEquals(a.priv_invoke(), NestedA.ID);
64 }
65 }
66
67 static void checkA(NestedA a) throws Throwable {
68 verifyEquals(a.priv_invoke(), NestedA.ID);
69 }
70
71 static void checkB(NestedB b) throws Throwable {
72 verifyEquals(b.priv_invoke(), NestedB.ID);
73 }
74
75 static void checkC(NestedC c) throws Throwable {
76 verifyEquals(c.priv_invoke(), NestedC.ID);
77 }
78
79
80 // Access to private members of classes outside the nest is
81 // not permitted. These tests should throw IllegalAccessError
82 // at runtime. To allow them to compile the classes below are
83 // defined with public members. We then replace those class files
84 // with jcod variants that make the member private again.
85
86 static void checkExternalSuper(ExternalSuper s) throws Throwable {
87 try {
88 String str = s.priv_invoke_s();
89 throw new Error("Unexpected access to ExternalSuper.priv_invoke_s");
90 }
91 catch (IllegalAccessError iae) {
92 System.out.println("Got expected exception accessing ExternalSuper.priv_invoke_s:" + iae);
93 }
94 }
95
96 static void checkExternalSub(ExternalSub s) throws Throwable {
97 try {
98 String str = s.priv_invoke();
99 throw new Error("Unexpected access to ExternalSub.priv_invoke");
100 }
101 catch (IllegalAccessError iae) {
102 System.out.println("Got expected exception accessing ExternalSub.priv_invoke:" + iae);
103 }
104 }
105
106 static void verifyEquals(String actual, String expected) {
107 if (!actual.equals(expected)) {
108 throw new Error("Expected " + expected + " but got " + actual);
109 }
110 System.out.println("Check passed for " + expected);
111 }
112
113 public static void main(String[] args) throws Throwable {
114 NestedA a = new NestedA();
115 NestedB b = new NestedB();
116 NestedC c = new NestedC();
117 ExternalSub sub = new ExternalSub();
118 ExternalSuper sup = new ExternalSuper();
119
120 checkExternalSuper(sup);
121 checkExternalSuper(a);
122 checkExternalSuper(b);
123 checkExternalSuper(c);
124 checkExternalSuper(sub);
125
126 checkA(a);
127 checkA(b);
128 checkA(c);
129 checkA(sub);
130
131 NestedA.checkA(a);
132 NestedA.checkA(b);
133 NestedA.checkA(c);
134 NestedA.checkA(sub);
135
136 NestedB.checkA(a);
137 NestedB.checkA(b);
138 NestedB.checkA(c);
139 NestedB.checkA(sub);
140
141 NestedC.checkA(a);
142 NestedC.checkA(b);
143 NestedC.checkA(c);
144 NestedC.checkA(sub);
145
146 checkB(b);
147 checkB(c);
148 checkB(sub);
149
150 checkC(c);
151 checkC(sub);
152
153 checkExternalSub(sub);
154 }
155 }
156
157 // Classes that are not part of the nest.
158 // Being non-public allows us to declare them in this file.
159 // The priv_invoke* member is public to allow this file to compile, but
160 // the jcod files change it back to private.
161
162 class ExternalSuper {
163 static final String ID = "ExternalSuper::priv_invoke_s";
164 // Can't call this priv_invoke as subclasses make it less accessible
165 // which is not allowed.
166 public String priv_invoke_s() {
167 return ID;
168 }
169 }
170
171
172 class ExternalSub extends TestInvokeHierarchy.NestedC {
173 static final String ID = "ExternalSub::priv_invoke";
174 public String priv_invoke() {
175 return ID;
176 }
177 }