[Paraview-developers] Segfault deleting filters when volume rendering

[Amy Squillacote]

Seems like a reasonable change to me.  We certainly don't want 
ParaView segfaulting.
- Amy

At 12:06 PM 8/26/2005, Shead, Timothy wrote:
>Content-class: urn:content-classes:message
>Content-Type: multipart/alternative;
>         boundary="----_=_NextPart_001_01C5AA58.26AA4030"
>
>Since I'm the new guy, thought I'd run the following past the group 
>prior to committing.  This issue happens intermittently when volume 
>rendering is in effect and you delete a filter - it seems that 
>sometimes the display gets updated *during* the deletion process - 
>in which case DisplayGUI->VolumeRenderMode is still true, and 
>DisplayGUI->PVSource is NULL, causing the subsequent dereference and 
>segfault.  Any thoughts?
>
>Many thanks,
>Tim Shead
>
>Index: GUI/Client/vtkPVDisplayGUI.cxx
>===================================================================
>RCS file: /cvsroot/ParaView/ParaView/GUI/Client/vtkPVDisplayGUI.cxx,v
>retrieving revision 1.48
>diff -u -r1.48 vtkPVDisplayGUI.cxx
>--- GUI/Client/vtkPVDisplayGUI.cxx      9 Aug 2005 15:53:53 -0000       1.48
>+++ GUI/Client/vtkPVDisplayGUI.cxx      26 Aug 2005 15:54:32 -0000
>@@ -114,7 +114,7 @@
>      {
>        if (   !this->DisplayGUI
>            || !this->DisplayGUI->VolumeRenderMode
>-          || !this->DisplayGUI->PVSource->GetDisplayProxy() )
>+          || !(this->DisplayGUI->PVSource && 
>this->DisplayGUI->PVSource->GetDisplayProxy()))
>          {
>          return;
>          }
>
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