/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
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 * 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).
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 * 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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/*
 * @test
 * @bug     4916620
 * @summary legal cast is rejected
 * @author  Christian Plesner Hansen
 * @compile/fail -Xlint:unchecked -Werror T4916620.java
 * @compile -Xlint:unchecked T4916620.java
 */

public class T4916620 {
    static class BB<T, S> { }
    static class BD<T> extends BB<T, T> { }

    void f() {
	BD<Number> bd = new BD<Number>();
        BB<? extends Number, ? super Integer> bb = bd;
        Object o = (BD<Number>) bb;
    }
}