[vtk-developers] Patch for vtkPythonUtil.cxx

[Prabhu Ramachandran]

Charl Botha wrote:
> 2008/8/3 Prabhu Ramachandran <prabhu at aero.iitb.ac.in>:
>>> I ran into a bug that causes a crash on some VTK-Python apps at exit. It
>>> is hard to reproduce with a small test case but reproducible in some TVTK
>>> scripts I have.  Basically, what seems to happen is that if there is a VTK
>>> object on which you have a Python callback via an event notification, say
>>> "ModifiedEvent" or "DeleteEvent", then it is possible (with VTK 5.2/5.3) for
>>> the callback to be called *after* PyFinalize is called.  This will cause a
>>> segfault.  The patch just checks to see if the interpreter is initialized
>>> and if not return.  This avoids the problem.
> 
> Funny coincidence.  I just ran into this with a vtkProgrammableFilter.
> :)  Thanks for fixing.

No problem.  If possible could you please share a small example (like 
the one Chris sent) that demonstrates this particular bug so we have a 
test case we can check in?  Thanks!

cheers,
prabhu