[vtkusers] SetFilePrefix crashes application

[Rene Tschirley]

Dear all,


Now I decided that it is time to go on visualising with vtk3.2 and tried
to upgrade some applications from 2.3 to 3.2. I'm quite worried about a
problem with vtkVolume16Reader. My application uses:

  if (!reader)
    {
      reader = vtkVolume16Reader::New();
      reader->SetDataDimensions(size_x,size_y);
      reader->SetDataByteOrderToLittleEndian();
      reader->SetFilePrefix(inputfilename);
      reader->SetImageRange(from, to);
      reader->SetDataSpacing (spacing_x, spacing_y, spacing_z);
      reader->Update();
    }

and runs perfectly with vtk2.3. Using vtk3.2 it crashes with a segv in
either SetFilePrefix or SetImageRange. The gdb stack trace shows

  #0  0x403ca586 in vtkPointSetToPointSetFilter::~vtkPointSetToPointSetFilter (
      this=0x8058970, __in_chrg=0) at vtkPointSetToPointSetFilter.cxx:63
  #1  0x40525e71 in vtkWarpLens::~vtkWarpLens (this=0x8058970, __in_chrg=0)
      at vtkWarpLens.cxx:112
  #2  0x804cd1b in ReadVolume () at vol_analyse.cxx:1131
  #3  0x804aaa5 in main () at vol_analyse.cxx:232
  #4  0x40c196ef in __libc_start_main () from /lib/libc.so.6

when SetImageRange crashes the application and

  #0  0x0 in ?? ()
  #1  0x804cd0a in ReadVolume () at vol_analyse.cxx:1130
  #2  0x804aaa5 in main () at vol_analyse.cxx:232
  #3  0x40c196ef in __libc_start_main () from /lib/libc.so.6

if SetFilePrefix crashes it.

I'm unsure if I missed something obvious or if I should patch the
destructor in vtkPointSetToPointSetFilter.cxx.


Thanks in advance,
       René

-- 
Dipl.-Inform. René Tschirley              http://www.cs.tu-berlin.de/~pooh
TU Berlin, Computer Graphics and Computer Assisted Medicine research group