test/jdk/java/io/Serializable/partialClassDesc/PartialClassDesc.java

/*
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 * 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.
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 */

/* @test
 * @bug 4373844
 * @summary Verify that partially initialized ObjectStreamClass instances
 *          cannot be obtained from ObjectStreamClass.lookup() in the event
 *          that the target class is uninitializable.
 */

import java.io.*;

class A implements Serializable {
    // existence of SVUID forces class initialization during classdesc init
    private static final long serialVersionUID = 0L;

    static {
        if ("foo".equals("foo")) {      // force class initialization failure
            throw new Error();
        }
    }
}

public class PartialClassDesc {
    public static void main(String[] args) throws Exception {
        Class<?> cl = Class.forName(
            "A", false, PartialClassDesc.class.getClassLoader());
        ObjectStreamClass desc = null;
        try {
            desc = ObjectStreamClass.lookup(cl);
        } catch (Throwable th) {
        }
        try {
            desc = ObjectStreamClass.lookup(cl);
        } catch (Throwable th) {
        }
        if (desc != null) {
            throw new Error("should not be able to obtain class descriptor");
        }
    }
}