1 /* 2 * Copyright (c) 2020, 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 /** 27 * @test 28 * @bug 8216324 29 * @summary GetClassMethods is confused by the presence of default methods in super interfaces 30 * @library /test/lib 31 * @compile OverpassMethods.java 32 * @run main/othervm/native -agentlib:OverpassMethods OverpassMethods 33 * @run main/othervm/native -agentlib:OverpassMethods=maintain_original_method_order OverpassMethods 34 */ 35 36 import java.lang.reflect.Method; 37 import java.util.Arrays; 38 39 public class OverpassMethods { 40 41 static { 42 try { 43 System.loadLibrary("OverpassMethods"); 44 } catch (UnsatisfiedLinkError ex) { 45 System.err.println("Could not load OverpassMethods library"); 46 System.err.println("java.library.path:" + System.getProperty("java.library.path")); 47 throw ex; 48 } 49 } 50 log(Object msg)51 static private void log(Object msg) { 52 System.out.println(String.valueOf(msg)); 53 } 54 getJVMTIDeclaredMethods(Class<?> klass)55 static private native Method[] getJVMTIDeclaredMethods(Class<?> klass); 56 57 public interface Parent { def()58 default String def() { return "Parent.def"; } method0()59 String method0(); method1()60 String method1(); 61 } 62 63 public interface Child extends Parent { method2()64 String method2(); 65 } 66 67 public static class Impl implements Child { method0()68 public String method0() { return "Impl.method0"; } method1()69 public String method1() { return "Impl.method1"; } method2()70 public String method2() { return "Impl.method2"; } 71 } 72 main(String[] args)73 public static void main(String[] args) { 74 new Impl(); // To get classes initialized 75 76 Method[] reflectMethods = Child.class.getDeclaredMethods(); 77 Method[] jvmtiMethods = getJVMTIDeclaredMethods(Child.class); 78 79 if (jvmtiMethods == null) { 80 throw new RuntimeException("getJVMTIDeclaredMethods failed"); 81 } 82 83 log("Reflection getDeclaredMethods returned: " + Arrays.toString(reflectMethods)); 84 log("JVMTI GetClassMethods returned: " + Arrays.toString(jvmtiMethods)); 85 86 if (reflectMethods.length != jvmtiMethods.length) { 87 throw new RuntimeException("OverpassMethods failed: Unexpected method count from JVMTI GetClassMethods!"); 88 } 89 if (!reflectMethods[0].equals(jvmtiMethods[0])) { 90 throw new RuntimeException("OverpassMethods failed: Unexpected method from JVMTI GetClassMethods!"); 91 } 92 log("Test passed: Got expected output from JVMTI GetClassMethods!"); 93 } 94 } 95