test/langtools/tools/javac/capture/Capture1.java

/*
 * Copyright (c) 2004, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @test
 * @bug 5011312
 * @summary wildcard capture (snapshotting)
 * @author gafter
 *
 * @compile -Xlint:unchecked -Werror Capture1.java
 */

package capture1;

import java.util.List;

class C {
    public static <T> void copy1(List<? super T> dest, List<? extends T> src) {
        copy1(dest, src);
        copy2(dest, src); // oops
        copy3(dest, src); // oops
    }
    public static <T> void copy2(List<T> dest, List<? extends T> src) {
        copy1(dest, src);
        copy2(dest, src);
        copy3(dest, src); // oops
    }
    public static <T> void copy3(List<? super T> dest, List<T> src) {
        copy1(dest, src);
        copy2(dest, src); // oops
        copy3(dest, src);
    }
}