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 21 * questions. 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 }