A little more followup. The crash occurs around line 675 of
xc/programs/Xserver/vnc/XserverDesktop.cc where we have
*r = pent->co.shco.red->color;
(along with blue and green). However, there is no check for
pent->co.shco.red being NULL, and when it is, Xvnc crashes.
--
Peter Fales Lucent Technologies, Room 1C-436
N9IYJ 2000 N Naperville Rd PO Box 3033
internet: [EMAIL PROTECTED] Naperville, IL 60566-7033
work: (630) 979-8031
On Fri, Jan 14, 2005 at 03:19:58PM -0600, Peter Fales wrote:
> We're seeing cases where where java applications can consistently cause
> the 4.0 server to crash. It requires a fairly specific set of circumstances
>
> - Solaris 8 (doesn't crash on Linux, not sure about other Solaris versions)
> - Sun's J2SDK 1.4.2_06 (doesn't crash with 1.4.0 or 1.4.1)
> - VNC 4.0 server running in default 8 bit mode (doesn't crash with -depth 24)
>
> To reproduce, copy the following code (from
> http://java.sun.com/developer/qow/archive/24/) into a file called
> SplashTest.java, and run
>
> $ javac SplashTest.java
> $ java SplashTest
> (Move the mouse onto the splash screen when it comes up)
>
> Given that java 1.4.0 and 1.4.1 are OK, I almost wonder if there is a bug
> in java. But even if there is, it would be nice if it didn't crash
> the server.
>
> ============================ cut here ==============================
> import java.awt.event.*;
> import java.awt.*;
>
> public class SplashTest {
>
> public static void main(String args[]) {
> new SplashWindowFrame();
> }
> }
>
> class SplashWindowFrame extends Frame {
> SplashWindow sw;
> Image splashIm;
>
> SplashWindowFrame() {
> super();
>
> /* Add the window listener */
> addWindowListener(new WindowAdapter() {
> public void windowClosing(WindowEvent evt) {
> dispose();
> System.exit(0);
> }});
>
> /* Size the frame */
> setSize(200,200);
>
> /* Center the frame */
> Dimension screenDim =
> Toolkit.getDefaultToolkit().getScreenSize();
> Rectangle frameDim = getBounds();
> setLocation((screenDim.width - frameDim.width) / 2,
> (screenDim.height - frameDim.height) / 2);
>
> MediaTracker mt = new MediaTracker(this);
> splashIm = Toolkit.getDefaultToolkit(
> ).getImage("test.gif");
> mt.addImage(splashIm,0);
> try {
> mt.waitForID(0);
> } catch(InterruptedException ie){}
>
> sw = new SplashWindow(this,splashIm);
>
> try {
> Thread.sleep(3000);
> } catch(InterruptedException ie){}
>
> sw.dispose();
>
> /* Show the frame */
> setVisible(true);
> }
> }
>
> class SplashWindow extends Window {
> Image splashIm;
>
> SplashWindow(Frame parent, Image splashIm) {
> super(parent);
> this.splashIm = splashIm;
> setSize(200,200);
>
> /* Center the window */
> Dimension screenDim =
> Toolkit.getDefaultToolkit().getScreenSize();
> Rectangle winDim = getBounds();
> setLocation((screenDim.width - winDim.width) / 2,
> (screenDim.height - winDim.height) / 2);
> setVisible(true);
> }
>
> public void paint(Graphics g) {
> if (splashIm != null) {
> g.drawImage(splashIm,0,0,this);
> }
> }
> }
>
>
> ============================ cut here ==============================
> --
> Peter Fales Lucent Technologies, Room 1C-436
> N9IYJ 2000 N Naperville Rd PO Box 3033
> internet: [EMAIL PROTECTED] Naperville, IL 60566-7033
> work: (630) 979-8031
> _______________________________________________
> VNC-List mailing list
> [email protected]
> To remove yourself from the list visit:
> http://www.realvnc.com/mailman/listinfo/vnc-list
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