/*
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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
 * @summary Positive regression test from odersky
 * @author odersky
 *
 * @compile  Test2.java
 */

class Test2 {
    interface Ord {}

    static <B extends Ord> List<B> nil() { return new List<B>(); }

    static <A> List<A> cons(A x, List<A> xs) { return xs.prepend(x); }
    static <A> Cell<A> makeCell(A x) { return new Cell<A>(x); }
    static <A> A id(A x) { return x; }

    public static void main(String[] args) {
        List<Ord> xs = nil();
        List<Ord> zs = nil().prependList(nil());

        System.out.println(nil());
        System.out.println(nil().length());

        List<Ord> a = args.length == 1 ? nil() : nil();
        a = (List<Ord>) nil();
    }

}