AmbiguousCast2.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
 * 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 4856982
 * @summary generics: unable to cast between two convertible types
 * @author gafter
 *
 * @compile  AmbiguousCast2.java
 */

import java.lang.ref.*;

class Test<K, V> extends WeakReference<V> {
    static ReferenceQueue<Integer> queue = new ReferenceQueue<Integer>();

    public Test(K key, V value, ReferenceQueue<V> queue) {
        super(value, queue);
    }

    public static void main(String[] arg) throws Exception {
        Test<String, Integer> fromQueue = (Test<String, Integer>) queue.remove();
    }
}