Name: mc57594 Date: 10/12/99


If you make a JScrollPane with a massive (approaching Integer.MAX_VALUE) row or column header then the win32 VM will crash.

This code demonstrates the bug (I got it to crash on 1.2.2 (hotspot and classic) and Kestral Beta):

~~~ START CODE ~~~

import java.awt.*;
import javax.swing.*;

public class CrashTest {

  public static void main(String[] args) {

    JScrollPane scroll_pane = new JScrollPane(new JPanel());
    scroll_pane.setColumnHeaderView(new HeaderTest(true));
    scroll_pane.setRowHeaderView(new HeaderTest(false));

    JFrame frame = new JFrame();
    Container c = frame.getContentPane();
    c.add(scroll_pane);
    
    frame.pack();
    frame.setVisible(true);

  }

  static class HeaderTest extends JPanel {

    public HeaderTest(boolean horizontal) {
      if (horizontal) {
        setPreferredSize(new Dimension(Integer.MAX_VALUE, 10));
      }
      else {
        setPreferredSize(new Dimension(10, Integer.MAX_VALUE));
      }
    }

    public void paintComponent(Graphics g) {
      System.out.println(g.getClipBounds());

      System.out.println("Reached Step 1");
      g.setColor(Color.black);
      System.out.println("Reached Step 2");
      g.fillRect(0, 0, 5, 5);
      System.out.println("Reached Step 3");

    }
  
  }

}

~~~ END CODE ~~~

This is the output I get when run under Kestral Beta:

H:\toby\dev\java\bug>C:\jdk1.3\bin\java CrashTest
java.awt.Rectangle[x=0,y=0,width=10,height=2147483646]
Reached Step 1
Reached Step 2
#
# HotSpot Virtual Machine Error, EXCEPTION_ACCESS_VIOLATION
#
# Error ID: 4F533F57494E13120E43505002B0
#

abnormal program termination


I get a similar error on JDK1.2.2 hotspot and with the classic VM. The code shows that the bug occurs when the 'fillRect' command is executed. I found the bug when testing an application with an extremely large JScrollPane area.

The bug also occurs if just one of the axis extends to Integer.MAX_VALUE (They both extend to MAX_VALUE in the supplied code).

--------------------

10/9/99 eval1127@eng -- under kestrel RA (build "I"), with NT 4.0 SP 4, just a slightly-different HotSpot error ID:

java.awt.Rectangle[x=0,y=0,width=10,height=2147483647]
Reached Step 1
Reached Step 2
#
# HotSpot Virtual Machine Error, EXCEPTION_ACCESS_VIOLATION
#
# Error ID: 4F533F57494E13120E43505002BE
#

(with Solaris 2.7:)

% java CrashTest
java.awt.Rectangle[x=0,y=0,width=10,height=2147483647]
Reached Step 1
Reached Step 2
#
# HotSpot Virtual Machine Error, Unexpected Signal 11
#
# Error ID: 4F533F534F4C415249530E4350500790 01
#
[error occured during error reporting]
(Review ID: 96315)
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