| /* |
| * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 8015436 |
| * @summary the IK _initial_method_idnum value must be adjusted if overpass methods are added |
| * @run main Test8015436 |
| * |
| */ |
| |
| /* |
| * The test checks that a MemberName for the defaultMethod() is cached in |
| * the class MemberNameTable without a crash in the VM fastdebug mode. |
| * The original issue was that the InstanceKlass _initial_method_idnum was |
| * not adjusted properly when the overpass methods are added to the class. |
| * The expected/correct behavior: The test does not crash nor throw any exceptions. |
| * All the invocations of the defaultMethod() must be completed successfully. |
| */ |
| |
| import java.lang.invoke.*; |
| |
| interface InterfaceWithDefaultMethod { |
| public void someMethod(); |
| |
| default public void defaultMethod(String str){ |
| System.out.println("defaultMethod() " + str); |
| } |
| } |
| |
| public class Test8015436 implements InterfaceWithDefaultMethod { |
| @Override |
| public void someMethod() { |
| System.out.println("someMethod() invoked"); |
| } |
| |
| public static void main(String[] args) throws Throwable { |
| Test8015436 testObj = new Test8015436(); |
| testObj.someMethod(); |
| testObj.defaultMethod("invoked directly"); |
| |
| MethodHandles.Lookup lookup = MethodHandles.lookup(); |
| MethodType mt = MethodType.methodType(void.class, String.class); |
| MethodHandle mh = lookup.findVirtual(Test8015436.class, "defaultMethod", mt); |
| mh.invokeExact(testObj, "invoked via a MethodHandle"); |
| } |
| } |
| |
| /* |
| * A successful execution gives the output: |
| * someMethod() invoked |
| * defaultMethod() invoked directly |
| * defaultMethod() invoked via a MethodHandle |
| */ |