[vtk-developers] A bug in vtkPythonAlgorithm

[Utkarsh Ayachit]

Prabhu,

With `master` (v8.1.1-2403-g4ba8e48), the script doesn't seem to
segfault. I suspect this may have fixed it:
https://gitlab.kitware.com/vtk/vtk/commit/4b477bb56784adf4fb345757f158036f16b0e747

Utkarsh
On Sun, Jul 29, 2018 at 7:15 PM Prabhu Ramachandran
<prabhu at aero.iitb.ac.in> wrote:
>
> Hi all,
>
>
> vtkPythonAlgorithm is very nice and along with the dataset adapter code is really very convenient for Python users.
>
> I just found a bug with the vtkPythonAlgorithm.  I haven't had the chance to look at the error or debug it but thought I'd quickly share the issue.  Basically if any of the required methods raise an exception, you get a segfault and no error/traceback.  Attached is a simple example based on Berk's really nice blog post.
>
> I've left one incorrect line of code in the ProcessRequest method to show the segfault but this error could have been in any of the methods and you'll end up with a segfault. I've left these commented out.  I tested this with VTK 8.1.1 but not with master.
>
> Thank you!
>
> cheers,
>
> Prabhu
>
>
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