[vtkusers] vtkGraph::AddVertex segfault

[Caleb Johnston]

It is not a distributed graph. I have run the program numerous times in the
debugger and the problem definitely arrises from the AddVertex call.

My code is called at line 10, the AddVertex is at line 9.

0         ??         /lib/tls/i686/cmov/libc.so.6         0
0x0356ca22
1         malloc         /lib/tls/i686/cmov/libc.so.6         0
0x0356e898
2         operator new(unsigned int)         /usr/lib/libstdc++.so.6
0         0x034a9bb7
3
__gnu_cxx::new_allocator<vtkVertexAdjacencyList>::allocate(unsigned int,
void const*)         /usr/local/lib/vtk-5.4/libvtkFiltering.so.5.4         0
        0x02f6a4b6
4         std::_Vector_base<vtkVertexAdjacencyList,
std::allocator<vtkVertexAdjacencyList> >::_M_allocate(unsigned int)
/usr/local/lib/vtk-5.4/libvtkFiltering.so.5.4         0         0x02f691f2
5         std::vector<vtkVertexAdjacencyList,
std::allocator<vtkVertexAdjacencyList>
>::_M_insert_aux(__gnu_cxx::__normal_iterator<vtkVertexAdjacencyList*,
std::vector<vtkVertexAdjacencyList, std::allocator<vtkVertexAdjacencyList> >
>, vtkVertexAdjacencyList const&)
/usr/local/lib/vtk-5.4/libvtkFiltering.so.5.4         0         0x02f67341
6         std::vector<vtkVertexAdjacencyList,
std::allocator<vtkVertexAdjacencyList> >::push_back(vtkVertexAdjacencyList
const&)         /usr/local/lib/vtk-5.4/libvtkFiltering.so.5.4         0
    0x02f65e5d
7         vtkGraph::AddVertexInternal(vtkVariantArray*, int*)
/usr/local/lib/vtk-5.4/libvtkFiltering.so.5.4         0         0x02f63e3d
8         vtkMutableUndirectedGraph::AddVertex(vtkVariantArray*)
/usr/local/lib/vtk-5.4/libvtkFiltering.so.5.4         0         0x02ff19a8
9         vtkMutableUndirectedGraph::AddVertex()
/usr/local/lib/vtk-5.4/libvtkFiltering.so.5.4         0         0x02ff1946
10        Model::loadVolumeData         model.cxx         318
0x0813ffb7
11        Application::openFile         application.cxx         96
0x0813b3aa
12        Application::qt_metacall         moc_application.cxx         91
      0x0815f9b5
13        QMetaObject::metacall         qmetaobject.cpp         237
0x00bf4adb
14        QMetaObject::activate         qobject.cpp         3285
0x00c025a7
15        QAction::triggered         moc_qaction.cpp         263
0x0108f409
16        QAction::activate         qaction.cpp         1255
0x01090acf
17        QMenuPrivate::activateCausedStack         qmenu.cpp         1011
      0x01568314
18        QMenuPrivate::activateAction         qmenu.cpp         1103
  0x0156f373
19        QMenu::mouseReleaseEvent         qmenu.cpp         2312
0x0157169f
20        QWidget::event         qwidget.cpp         7998         0x010fa39a

On Thu, May 13, 2010 at 2:30 PM, Aashish Chaudhary <
aashish.chaudhary at kitware.com> wrote:

> And this is not a distributed graph?
>
> On Thu, May 13, 2010 at 2:16 PM, Caleb Johnston <cjj37 at cornell.edu> wrote:
>
>> I'm getting a segfault when calling vtkMutableUndirectedGraph::AddVertex.
>> However, it does not always occur at the same vertex. Sometimes it is after
>> the 2nd vertex. Sometimes it won't happen at all (though rarely). I'm only
>> adding about 120 vertices. And the program is not consuming large amounts of
>> data so I don't understand why this is happening. Also, this only happens in
>> Linux and Windows but not MacOS X. Below, I have included my algorithm for
>> adding vertices.
>>
>> thanks,
>> Caleb
>>
>> ...
>> int len = 0;
>> double X,Y,Z,Count;
>> for(i=0, j=0; j<numberOfLabels; i+=3, j++){
>>    X = (double)coords[i];
>>    Y = (double)coords[i+1];
>>    Z = (double)coords[i+2];
>>    Count = (double)centroids[j];
>>    if(Count>0.0){
>>       X = X / Count;
>>       Y = Y / Count;
>>       Z = Z / Count;
>>       len++;
>>       graph->AddVertex();  // crashes here.
>>       graph->Update();
>>       points->InsertNextPoint(X, Y, Z);
>>    }
>> }
>> ...
>>
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>
>
> --
> | Aashish Chaudhary
> | R&D Engineer
> | Kitware Inc.
> | www.kitware.com
>
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