[Paraview] segfault in a custom plugin

[Dominik Szczerba]

Hi,

The archive is here:

http://otoro.ethz.ch/~dominik/tmp/plugin.tar.bz2

Once again, the filter vtkMyImageResample is just a copy of
vtkImageChangeInformation with a customised name. I have also tried
vtkImageClip and vtkImageExtractVoi - they all segfault in the same
location. Note, removing the server CXX file and referencing the
original class in the xml file result in a proper operation, it is the
custom CXX part that generates the segfault.

Many thanks and best regards,
Dominik

On Mon, May 23, 2011 at 3:04 PM, Utkarsh Ayachit
<utkarsh.ayachit at kitware.com> wrote:
> Dominik,
>
> Can you attach the full source tar ball please? Would just make it
> easier to try it out.
>
> Thanks
> Utkarsh
>
> On Mon, May 23, 2011 at 8:12 AM, Dominik Szczerba <dominik at itis.ethz.ch> wrote:
>> Hello!
>>
>> I am facing a segfault with a custom filter. Here a minimalistic setup
>> to reproduce the problem, Ubuntu 10.10 64bit:
>>
>> I have copied the original vtkImageClip class, as well as its
>> ServerManager xml part, merely renaming it to vtkMyImageResample. I
>> have added a plugin like
>>
>>
>> ADD_PARAVIEW_PLUGIN(MyImageResample_Plugin "1.0"
>>   SERVER_MANAGER_XML MyImageResample.xml
>>   SERVER_MANAGER_SOURCES vtkMyImageResample.cxx
>>   GUI_RESOURCE_FILES MyImageResampleGUI.xml)
>>
>> The GUI part can not be simpler:
>>
>> <ParaViewFilters>
>>  <Category name="My Filters">
>>  <Filter name="MyImageResample"/>
>>  </Category>
>> </ParaViewFilters>
>>
>> Now I create an image using Sources->Wavelet (default options) and
>> call my filter. ParaView crashes with the backtrace pasted below.
>> Does anyone have any hints how to proceed from here?
>>
>> Many thanks and best regards,
>> Dominik
>>
>>
>> Program received signal SIGSEGV, Segmentation fault.
>> 0x00007fffe8386dae in
>> vtkInformationVector::GetNumberOfInformationObjects (this=0x0)
>>    at /home/domel/pack/ParaView-3.10.1/VTK/Common/vtkInformationVector.h:43
>> 43        int GetNumberOfInformationObjects() { return
>> this->NumberOfInformationObjects; };
>> (gdb) bt
>> #0  0x00007fffe8386dae in
>> vtkInformationVector::GetNumberOfInformationObjects (this=0x0)
>>    at /home/domel/pack/ParaView-3.10.1/VTK/Common/vtkInformationVector.h:43
>> #1  0x00007fffe8384176 in vtkAlgorithm::GetNumberOfOutputPorts
>> (this=0x1fbaa60) at
>> /home/domel/pack/ParaView-3.10.1/VTK/Filtering/vtkAlgorithm.cxx:733
>> #2  0x00007ffff187ab36 in
>> vtkPVAlgorithmPortsInformation::CopyFromObject (this=0x1fbcf70,
>> obj=0x1fbaa60)
>>    at /home/domel/pack/ParaView-3.10.1/Servers/Common/vtkPVAlgorithmPortsInformation.cxx:73
>> #3  0x00007ffff18e08cb in vtkSelfConnection::GatherInformation
>> (this=0x15d46b0, info=0x1fbcf70, id=...)
>>    at /home/domel/pack/ParaView-3.10.1/Servers/Common/vtkSelfConnection.cxx:149
>> #4  0x00007ffff185fd9c in
>> vtkProcessModuleConnectionManager::GatherInformation (this=0x1044d80,
>> connectionID=5, serverFlags=1, info=0x1fbcf70, id=...)
>>    at /home/domel/pack/ParaView-3.10.1/Servers/Common/vtkProcessModuleConnectionManager.cxx:570
>> #5  0x00007ffff1867d98 in vtkProcessModule::GatherInformation
>> (this=0xccefc0, connectionID=5, serverFlags=1, info=0x1fbcf70, id=...)
>>    at /home/domel/pack/ParaView-3.10.1/Servers/Common/vtkProcessModule.cxx:310
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