[Paraview-developers] CGNS reader bug

[Dan Lipsa]

Jim,
Thanks for reporting this. I will take a look.

Dan



On Tue, Oct 13, 2015 at 5:31 AM, <Jim.Eliot at awe.co.uk> wrote:

> Good morning,
>
>
>
> 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.
>
>
>
> 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.
>
>
>
> 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.
>
>
>
> 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.
>
>
>
> Regards,
>
> Jim
>
>
>
> *Jim Eliot*
>
> *High Performance Computing Group*
>
> AWE, Aldermaston, Reading, RG7 4PR
>
>
>
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