RegisterNatives.java

/*
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 * 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 8024804 8028741 8232613
 * @summary interface method resolution should skip finding j.l.Object's registerNatives() and succeed in selecting class B's registerNatives()
 * @run main RegisterNatives
 */
public class RegisterNatives {
  interface I {
    void registerNatives();
  }

  interface J extends I {}

  interface K {
    default public void registerNatives() { System.out.println("K"); }
  }

  static class B implements J {
    public void registerNatives() { System.out.println("B"); }
  }

  static class C implements K {}

  public static void main(String... args) {
    System.out.println("Regression test for JDK-8024804, crash when InterfaceMethodref resolves to Object.registerNatives\n");
    J val = new B();
    try {
      val.registerNatives();
    } catch (IllegalAccessError e) {
      System.out.println("TEST FAILS - JDK 8 JVMS, static and non-public methods of j.l.Object should be ignored during interface method resolution\n");
      e.printStackTrace();
      throw e;
    }
    C cval = new C();
    try {
      cval.registerNatives();
    } catch (IllegalAccessError e) {
      System.out.println("TEST FAILS - a default method named registerNatives should no longer be masked by removed Object.registerNatives\n");
      e.printStackTrace();
      throw e;
    }
    System.out.println("TEST PASSES - no IAE resulted\n");
  }
}