[vtkusers] strange error while using SetDirectoryName twice on vtkDICOMImageReader

[Mathieu Malaterre]

Luca,

	Can you try the following code:

   vtkDICOMImageReader *reader = vtkDICOMImageReader::New();
   reader->SetDirectoryName("/home/luca/data/dicom/11089");
   reader->Update();
   reader->SetDirectoryName("/home/luca/data/dicom/11088");
   reader->Update();

If this crash, please open a bug in the bugtracker at:

	http://vtk.org/Bug

Thanks
Mathieu

Pankaj Daga wrote:
> Hi everyone,
> 
> For the past few hours, I have been trying to find out why I get this 
> error on using vtkDICOMImageReader class. I am new to VTK and was 
> playing around with this class when I noticed this error.
> 
> I initialize a DICOM reader object and attach it to a 
> vtkDICOMImageViewer object. This works fine. The error happens when I 
> set the directory of the DICOM reader to point to another DICOM 
> directory. Then, I get the error:
> 
> libc detected: free() invalid pointer.
> 
> Here is my code:
> 
>   vtkDICOMImageReader *reader = vtkDICOMImageReader::New(); 
>   vtkImageViewer* image_view = vtkImageViewer::New();     
>   image_view->SetInput(reader-
>  >GetOutput());   
>  
>   reader->SetDirectoryName("/home/luca/data/dicom/11089");
>   reader->Update();
>  
>   widget.SetRenderWindow(image_view->GetRenderWindow());   
>   image_view->SetupInteractor(widget.GetRenderWindow ()->GetInteractor()); 
> 
>   // When I display this without the next lines, it works fine.
> 
>   // NOW I TRY TO UPDATE MY READER with a new input.
> 
>   reader->SetDirectoryName("/home/luca/data/dicom/11088");
>   reader->Update();
> 
>   When I call the SetDirectoryName method, the program crashes with libc 
> error. I am new to VTK and maybe I am using it the way that it is not 
> supposed to be used. Maybe, I have to pause the rendering or something. 
> If anyone has any ideas, please help.
> 
> I have no idea what is going on! Please help! I wish this bug did not 
> happen on a Friday!
> 
> Thanks,
> 
> Luca
> 
> 
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