1 /* 2 * Copyright (c) 2018, 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 /** 25 * @test 26 * @bug 8200167 8010319 27 * @summary Regression test for a bug introduced in 8200167 and fixed in 8010319 28 * @run main FinalVirtualCallFromInterface 29 */ 30 31 import java.lang.invoke.*; 32 33 /* 34 * Test that a MethodHandle for a final method, called from an interface, works correctly. 35 * With only 8200167 applied this fails with: 36 * Exception in thread "main" java.lang.InternalError: Should only be invoked on a subclass 37 * at 38 * java.base/java.lang.invoke.DirectMethodHandle.checkReceiver(DirectMethodHandle.java:441) 39 * 40 * The nestmate update under 8010319 fixes that bug. 41 */ 42 public class FinalVirtualCallFromInterface { 43 44 static class Final { 45 public final void fm() {} 46 } 47 48 static interface FinalUser { 49 static void test() throws Throwable { 50 MethodType mt = MethodType.methodType(void.class); 51 MethodHandle mh = MethodHandles.lookup().findVirtual(Final.class, "fm", mt); 52 Final f = new Final(); 53 mh.invokeExact(f); 54 mh.invoke(f); 55 } 56 } 57 58 public static void main(String[] args) throws Throwable { 59 FinalUser.test(); 60 } 61 }