/*

 * 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 4334623

 * @summary Verify that serialPersistentFields cannot be used to cause

 *          deserialization to set the value of a static field.

 */

import java.io.*;

public class ModifyStaticFields implements Serializable {

    private static final ObjectStreamField[] serialPersistentFields =

        new ObjectStreamField[] { new ObjectStreamField("str", String.class) };

    static String str = "foo";

    public static void main(String[] args) throws Exception {

        ByteArrayOutputStream bout = new ByteArrayOutputStream();

        ObjectOutputStream oout = new ObjectOutputStream(bout);

        oout.writeObject(new ModifyStaticFields());

        oout.close();

        String origStr = str;

        ObjectInputStream oin = new ObjectInputStream(

            new ByteArrayInputStream(bout.toByteArray()));

        oin.readObject();

        if (str != origStr) {

            throw new Error("deserialization modified static field");

        }

    }

    private void writeObject(ObjectOutputStream out) throws IOException {

        ObjectOutputStream.PutField pf = out.putFields();

        pf.put("str", "bar");

        out.writeFields();

    }

}