1 /*
2 * Copyright (c) 2014, 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
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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 java.base/jdk.internal.classfile
29 * java.base/jdk.internal.classfile.attribute
30 * java.base/jdk.internal.classfile.constantpool
31 * java.base/jdk.internal.classfile.instruction
32 * java.base/jdk.internal.classfile.components
33 * java.base/jdk.internal.classfile.impl
34 * @compile SyntheticClasses.java
35 * @run main SyntheticClasses
36 */
37
38 import java.io.*;
39 import java.util.*;
40 import jdk.internal.classfile.*;
41 import jdk.internal.classfile.attribute.*;
42
43 public class SyntheticClasses {
44
45 public static void main(String[] args) throws IOException {
46 new SyntheticClasses().run();
47 }
48
49 private void run() throws IOException {
50 File testClasses = new File(System.getProperty("test.classes"));
51 for (File classFile : Objects.requireNonNull(testClasses.listFiles(f -> f.getName().endsWith(".class")))) {
52 ClassModel cf = Classfile.of().parse(classFile.toPath());
53 if ((cf.flags().flagsMask() & (Classfile.ACC_SYNTHETIC | Classfile.ACC_ABSTRACT)) == Classfile.ACC_SYNTHETIC) {
54 if ((cf.flags().flagsMask() & Classfile.ACC_IDENTITY) == 0) {
55 throw new IllegalStateException("Missing ACC_IDENTITY on synthetic concrete identity class: " + cf.thisClass().asInternalName());
56 }
57 }
58 if (cf.thisClass().asInternalName().matches(".*\\$[0-9]+")) {
59 EnclosingMethodAttribute encl = cf.findAttribute(Attributes.ENCLOSING_METHOD).orElse(null);
60 if (encl != null) {
61 if (encl.enclosingMethodName().isPresent())
62 throw new IllegalStateException("Invalid EnclosingMethod.method: " +
63 encl.enclosingMethodName().get().stringValue() + ".");
64 }
65 }
66 InnerClassesAttribute attr = cf.findAttribute(Attributes.INNER_CLASSES).orElse(null);
67 if (attr != null) {
68 for (InnerClassInfo info : attr.classes()) {
69 if (cf.majorVersion() < 51)
70 throw new IllegalStateException();
71 if (info.innerName().isEmpty() && info.outerClass().isPresent() )
72 throw new IllegalStateException("Invalid outer_class_info: " +
73 info.outerClass().get().asInternalName() +
74 "; inner_name is empty");
75 }
76 }
77 }
78 }
79 }
80
81 class SyntheticConstructorAccessTag {
82
83 private static class A {
84 private A(){}
85 }
86
87 public void test() {
88 new A();
89 }
90 }
91
92 class SyntheticEnumMapping {
93 private int convert(E e) {
94 switch (e) {
95 case A: return 0;
96 default: return -1;
97 }
98 }
99 enum E { A }
100 }
101
102 interface SyntheticAssertionsDisabled {
103 public default void test() {
104 assert false;
105 }
106 }