test/jdk/java/lang/invoke/CustomizedLambdaFormTest.java

/*
 * Copyright (c) 2015, 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.
 *
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 */

import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandleHelper;
import java.lang.invoke.MethodType;

/* @test
 * @summary Assertion in LambdaFormEditor.bindArgumentType is too strong
 *
 * @compile/module=java.base java/lang/invoke/MethodHandleHelper.java
 * @run main/othervm -esa CustomizedLambdaFormTest
 */

public class CustomizedLambdaFormTest {

    static void testExtendCustomizedBMH() throws Exception {
        // Construct BMH
        MethodHandle mh = MethodHandleHelper.IMPL_LOOKUP.findVirtual(String.class, "concat",
                MethodType.methodType(String.class, String.class))
                .bindTo("a");
        MethodHandleHelper.customize(mh);
        mh.bindTo("b"); // Try to extend customized BMH
    }

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