1 /*
   2  * Copyright (c) 2007, 2008, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25   @test
  26   @bug 6255653
  27   @summary REGRESSION: Override isLightweight() causes access violation in awt.dll
  28   @author Andrei Dmitriev: area=awt-component
  29   @run main IsLightweightCrash
  30 */
  31 
  32 /*
  33  * The test may not crash for several times so iteratively continue up to some limit.
  34  */
  35 
  36 import java.awt.*;
  37 
  38 public class IsLightweightCrash {
  39     public static int ITERATIONS = 20;
  40 
  41     public static void main(String []s)
  42     {
  43         for (int i = 0; i < ITERATIONS; i++){
  44             showFrame(i);
  45         }
  46     }
  47 
  48     private static void showFrame(int i){
  49         System.out.println("iteration = "+i);
  50         Frame f = new Frame();
  51         f.add(new AHeavyweightComponent());
  52         f.setVisible(true);
  53         f.setVisible(false);
  54     }
  55 }
  56 
  57 class AHeavyweightComponent extends Component {
  58     public boolean isLightweight() { return false; }
  59 }