/*

 * Copyright 2004 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

/*

 * @test

 * @bug 5044157

 * @summary type system loophole in wildcard substitution

 * @author Gilad Bracha

 *

 * @compile/fail CaptureInSubtype.java

 */

import java.util.List;

import java.util.ArrayList;

public class CaptureInSubtype {

    static class SuperOfFlaw<S>{

        S s;

        S get() { return s;}

        void put(S a) { s = a;}

        SuperOfFlaw(S a) { s = a;}

    }

    static class Flaw<T> extends SuperOfFlaw<List<T>> {

        List<T> fetch(){return s;}

        Flaw(T t){super(new ArrayList<T>()); s.add(t);}

    }

    static class SuperOfShowFlaw {

        SuperOfFlaw<List<?>> m(){return null;}

    }

    public static class ShowFlaw extends SuperOfShowFlaw {

        static Flaw<Number> fn =  new Flaw<Number>(new Integer(3));

        Flaw<?> m(){return fn;}

    }

    public static void main(String[] args) {

        SuperOfShowFlaw sosf = new ShowFlaw();

        SuperOfFlaw<List<?>> sof = sosf.m();

        List<String> ls = new ArrayList<String>();

        ls.add("Smalltalk rules!");

        sof.put(ls);

        Number n = ShowFlaw.fn.get().get(0);

    }

}