[vtkusers] Cannot free a vtkSmartPointer

[Luca Tersi]

Dears,

I'm trying to free a SmartPointer of a vtkActor as mySmartPointer = NULL,
but I get "segmentation faults" or "corrupted double-linked list"
Could you please suggest me how to debug the issue?


More details:
I want to remove the actor from the renderer (I select it based on the
specular parameter s), and free a pointer to it (in another class):

    vtkActorCollection * actorCollection = renderer->GetActors();
    unsigned int numberOfItems=actorCollection -> GetNumberOfItems();

    bool flag = true;

    int i=0;
    while ( i < numberOfItems )
    {
        vtkSmartPointer<vtkActor> a=vtkActor::SafeDownCast (
actorCollection -> GetItemAsObject ( i ) );

        if ( double ( a->GetProperty()->GetSpecular() ) == s  )
        {
            renderer -> RemoveActor ( a );
            numberOfItems--;
            }
        else
            ++i;
    }

then I reset the pointer in another class, getting the error.

Thanks a lot

Luca

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