1 /*
   2  * Copyright (c) 2007, 2016, 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   @key headful
  27   @bug 6255653
  28   @summary REGRESSION: Override isLightweight() causes access violation in awt.dll
  29   @author Andrei Dmitriev: area=awt-component
  30   @run main IsLightweightCrash
  31 */
  32 
  33 /*
  34  * The test may not crash for several times so iteratively continue up to some limit.
  35  */
  36 
  37 import java.awt.*;
  38 
  39 public class IsLightweightCrash {
  40     public static int ITERATIONS = 20;
  41 
  42     public static void main(String []s)
  43     {
  44         for (int i = 0; i < ITERATIONS; i++){
  45             showFrame(i);
  46         }
  47     }
  48 
  49     private static void showFrame(int i){
  50         System.out.println("iteration = "+i);
  51         Frame f = new Frame();
  52         f.add(new AHeavyweightComponent());
  53         f.setVisible(true);
  54         f.setVisible(false);
  55     }
  56 }
  57 
  58 class AHeavyweightComponent extends Component {
  59     public boolean isLightweight() { return false; }
  60 }