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<p class="MsoNormal">Good morning,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have run into a bug with the CGNS reader in ParaView which appeared when I moved from ParaView version 4.3.1 to 4.4.0. When I try to open a CGNS file that was created with a CGNS library version that is higher than that used by ParaView
(3.1.3) it fails, and if it is an hdf5-based CGNS file, it produces a segmentation fault.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I think that this might be the same problem as bug 0015704, so I updated that bug with my details. I thought that maybe I should report it here also.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I did some investigating and it seems that problem is caused by some incorrect version number checks in vtkCGNSReader.cxx. For hdf5-based CGNS files, the segfault occurs in vtkMPASReader::CanReadFile due to a strcpy on an invalid pointer.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have created a fix for the CGNS version checks and have attached a git diff of vtkCGNSReader.cxx to this email. This fixes the CGNS reader, and also seems to prevent the segfault in vtkMPASReader::CanReadFile as this code is no longer
reached.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">Jim<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#00747B;mso-fareast-language:EN-GB">Jim Eliot<o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#00747B;mso-fareast-language:EN-GB">High Performance Computing Group<o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#00747B;mso-fareast-language:EN-GB">AWE, Aldermaston, Reading, RG7 4PR
<o:p></o:p></span></p>
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