/*

 * Copyright (c) 2018, 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

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 */

/**

 * @test

 * @bug 8200167 8010319

 * @summary Regression test for a bug introduced in 8200167 and fixed in 8010319

 * @run main FinalVirtualCallFromInterface

 */

import java.lang.invoke.*;

/*

 * Test that a MethodHandle for a final method, called from an interface, works correctly.

 * With only 8200167 applied this fails with:

 * Exception in thread "main" java.lang.InternalError: Should only be invoked on a subclass

 *        at

 * java.base/java.lang.invoke.DirectMethodHandle.checkReceiver(DirectMethodHandle.java:441)

 *

 * The nestmate update under 8010319 fixes that bug.

 */

public class FinalVirtualCallFromInterface {

    static class Final {

        public final void fm() {}

    }

    static interface FinalUser {

        static void test() throws Throwable {

            MethodType mt = MethodType.methodType(void.class);

            MethodHandle mh = MethodHandles.lookup().findVirtual(Final.class, "fm", mt);

            Final f = new Final();

            mh.invokeExact(f);

            mh.invoke(f);

        }

    }

    public static void main(String[] args) throws Throwable {

        FinalUser.test();

    }

}