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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     6650759
 * @summary Inference of formal type parameter (unused in formal parameters) is not performed
 * @compile/fail/ref=T6650759m.out T6650759m.java -XDrawDiagnostics
 */

import java.util.*;

class T6650759m {
    <Z> List<? super Z> m(List<? extends List<? super Z>> ls) {
        return ls.get(0);
    }

    void test() {
        ArrayList<ArrayList<Integer>> lli = new ArrayList<ArrayList<Integer>>();
        ArrayList<Integer> li = new ArrayList<Integer>();
        li.add(2);
        lli.add(li);
        List<? super String> ls = m(lli); //here
        ls.add("crash");
        Integer i = li.get(1);
    }
}