1 /*
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 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
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22  */
23 
24 /** @test
25  *  @bug 8034854
26  *  @summary Verify that the InnerClasses attribute has outer_class_info_index zero if it has
27  *           inner_name_index zero (for synthetic classes)
28  *  @modules jdk.jdeps/com.sun.tools.classfile
29  *  @compile SyntheticClasses.java
30  *  @run main SyntheticClasses
31  */
32 
33 import java.io.*;
34 import java.util.*;
35 import com.sun.tools.classfile.*;
36 
37 public class SyntheticClasses {
38 
39     public static void main(String[] args) throws IOException, ConstantPoolException {
40         new SyntheticClasses().run();
41     }
42 
43     private void run() throws IOException, ConstantPoolException {
44         File testClasses = new File(System.getProperty("test.classes"));
45         for (File classFile : testClasses.listFiles(f -> f.getName().endsWith(".class"))) {
46             ClassFile cf = ClassFile.read(classFile);
47             if (cf.getName().matches(".*\\$[0-9]+")) {
48                 EnclosingMethod_attribute encl =
49                         (EnclosingMethod_attribute) cf.getAttribute(Attribute.EnclosingMethod);
50                 if (encl != null) {
51                     if (encl.method_index != 0)
52                         throw new IllegalStateException("Invalid EnclosingMethod.method_index: " +
53                                                         encl.method_index + ".");
54                 }
55             }
56             InnerClasses_attribute attr =
57                     (InnerClasses_attribute) cf.getAttribute(Attribute.InnerClasses);
58             if (attr != null) {
59                 for (InnerClasses_attribute.Info info : attr.classes) {
60                     if (cf.major_version < 51)
61                         throw new IllegalStateException();
62                     if (info.inner_name_index == 0 && info.outer_class_info_index != 0)
63                         throw new IllegalStateException("Invalid outer_class_info_index=" +
64                                                         info.outer_class_info_index +
65                                                         "; inner_name_index=" +
66                                                         info.inner_name_index + ".");
67                 }
68             }
69         }
70     }
71 }
72 
73 class SyntheticConstructorAccessTag {
74 
75     private static class A {
76         private A(){}
77     }
78 
79     public void test() {
80         new A();
81     }
82 }
83 
84 class SyntheticEnumMapping {
85     private int convert(E e) {
86         switch (e) {
87             case A: return 0;
88             default: return -1;
89         }
90     }
91     enum E { A }
92 }
93 
94 interface SyntheticAssertionsDisabled {
95     public default void test() {
96         assert false;
97     }
98 }