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