/*

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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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 */

import jdk.test.lib.Asserts;

/*

 * @test

 * @key cte_test

 * @bug 4784641

 * @summary -Xcheck:jni overly strict in JNI method IsSameObject

 *          Fixed in JDK1.3.1_10

 *          Fixed in JDK1.4.1_07

 * @modules java.base/jdk.internal.misc

 * @library /test/lib

 * @run main/othervm/native -Xcheck:jni SameObject

 */

public class SameObject {

    public Object obj = new Object();

    static {

        System.loadLibrary("SameObject");

    }

    public native void createWeakRef(Object obj);

    public native int checkWeakRef();

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

        SameObject sameObject = new SameObject();

        int result = sameObject.test();

        Asserts.assertEquals(result, 0, "WeakRef still alive");

    }

    public int test() {

        createWeakRef(obj);

        obj = null;

        System.gc();

        try {

            Thread.sleep(2000);

        } catch (InterruptedException ex) {

            System.out.println("Interrupted");

        }

        return checkWeakRef();

    }

}