test/runtime/RedefineFinalizer/RedefineFinalizer.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
 * 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 6904403
 * @summary Don't assert if we redefine finalize method
 * @library /testlibrary
 * @build RedefineClassHelper
 * @run main RedefineClassHelper
 * @run main/othervm -javaagent:redefineagent.jar RedefineFinalizer
 */

/*
 * Regression test for hitting:
 *
 * assert(f == k->has_finalizer()) failed: inconsistent has_finalizer
 *
 * when redefining finalizer method
 */
public class RedefineFinalizer {

    public static String newB =
                "class RedefineFinalizer$B {" +
                "   protected void finalize() { " +
                "       System.out.println(\"Finalizer called\");" +
                "   }" +
                "}";

    public static void main(String[] args) throws Exception {
        RedefineClassHelper.redefineClass(B.class, newB);

        A a = new A();
    }

    static class A extends B {
    }

    static class B {
        protected void finalize() {
            // should be empty
        }
    }
}