MantisBT - ParaView
The crash could also be reproduced with ParaView git/master as follows:
* Load file
* Filters - Clip
Clip Type: Plane
Origin: 0.3, 0.5, 0.5
Normal: 1, 0, 0
Tick "Inside Out" checkbox
Apply
(One may need to toggle the checkbox a couple of times and pressing
Apply each time after toggling until the segfault gets triggered.)
=> 0x00007fffdf00166a in vtkDataSetSurfaceFilter::InsertPolygonInHash
(this=0x2a09270, ids=0x2bd7cb0, numPts=0, sourceId=0)
at /opt/ParaView3.git/VTK/Graphics/vtkDataSetSurfaceFilter.cxx:1797
1797 quad = *end;
(gdb) list 1794
1789 vtkIdType* tab = new vtkIdType[numPts];
1790 for(int i=0; i<numPts; i++)
1791 {
1792 tab[i] = ids[(offset+i)%numPts];
1793 }
1794
1795 // Look for existing hex in the hash;
1796 end = this->QuadHash + tab[0];
1797 quad = *end;
(gdb) print numPts
$1 = 0
(gdb) print tab[0]
$1 = -614752568
The segfault is triggered by the variable 'numPts' being zero which
causes the for-loop in line 1790 being skipped such that the array 'tab'
is not initialized, but still queried at position 0 in line 1796. So,
'end' points to some random location in memory and dereferencing it in
line 1797 causes the segfault.
| related to | 0014188 | closed | David Thompson | Bug on clipping vtkUnstructuredGrid containing Polyhedrons |
polyh_min.vtu (830) 2011-10-31 10:06https://www.vtk.org/Bug/file/9052/polyh_min.vtu