test/langtools/tools/javac/meth/XlintWarn.java

/*
 * Copyright (c) 2008, 2011, 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 6999067 7010194
 * @summary cast for invokeExact call gets redundant cast to <type> warnings
 * @author mcimadamore
 *
 * @compile -Werror -Xlint:cast XlintWarn.java
 */

import java.lang.invoke.*;

class XlintWarn {
    void test(MethodHandle mh) throws Throwable {
        int i1 = (int)mh.invokeExact();
        int i2 = (int)mh.invoke();
        int i3 = (int)mh.invokeWithArguments();
    }

    void test2(MethodHandle mh) throws Throwable {
        int i1 = (int)(mh.invokeExact());
        int i2 = (int)(mh.invoke());
        int i3 = (int)(mh.invokeWithArguments());
    }

    void test3(MethodHandle mh) throws Throwable {
        int i1 = (int)((mh.invokeExact()));
        int i2 = (int)((mh.invoke()));
        int i3 = (int)((mh.invokeWithArguments()));
    }
}