[Insight-users] GDB debuging couldn't find method GetPixel()

[Matt McCormick]

Hi Johnny,

GDB has recently greatly improved C++ support.  You may have better luck
with a newer version of GDB.

The problem I have run into previously is with GDB resolving the
SmartPointer, not the templated methods.  So, you may have to do something
like:

p (*(image.m_Pointer)).GetPixel(pixelIndex)

If you use vim, I like pyclewn (which works on top of GDB).  If you want a
GUI, maybe KDevelop4?

Best,
Matt

On Thu, Jul 28, 2011 at 9:05 PM, Johnny <20673972 at student.uwa.edu.au> wrote:

> Hi all,****
>
> ** **
>
> Could be a silly question but did confuse me quite a few days. Your help
> are highly appreciated.****
>
> ** **
>
> While I was trying to use GDB debugging my code, I wanted to see what value
> the GetPixel(index) method returns.****
>
> ** **
>
> The easiest way to reproduce this issue is using the source code
> Examples/DataRepresentation/Image/Image3.cxx****
>
> ****
>
> Line113:  ImageType:PixelType pixelValue = image->GetPixel(pixelINdex);***
> *
>
> ** **
>
> I set the break at line 113. Then using expression “p
> image->GetPixel(pixelIndex)” which is exactly the same in the code. ****
>
> However I always got the message “Couldn’t find method
> itk::SmartPointer<itk::Image<short unsined int, 3u>>::GetPixel”****
>
> What was confusing me is if I continued the program, it run OK, which means
> it could find the method. I just could not get it from debuging command.**
> **
>
> ** **
>
> I did heard that GDB are somehow tricky to deal with templated methods. Is
> this the  issue?****
>
> ** **
>
> Btw I am using Intel mac osx, I cound not install ddd. Any suggestions for
> a good visual debugger?****
>
> ** **
>
> ** **
>
> Cheers****
>
> ** **
>
> Johnny****
>
> ** **
>
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