See bug #571274 Reproducible: Always
please a reduced description of the issue and the fix you deployed
Probably gcc is confused when getting a virtual method with a sort of inline. What gcc does is in this case is not defining the body of the virtual function, but requiring the entry in the virtual table. And during link it raise undefined reference to non-virtual thunk to csImageMemory::GetImageData() My fix is in this case defining the body of the method in a cpp file and not in the header. e.g. I changed virtual const void* GetImageData () { return GetImagePtr (); } in the header with virtual const void* GetImageData (); and add const void* csImageMemory::GetImageData () { return GetImagePtr (); } in the body.
