On Fri, Jun 12, 2009 at 8:43 AM, Tobias Rautenkranz<tobias@rautenkranz.ch> wrote:

Actually I am getting the NIL pointers from cffi:mem-ref:

CL-USER> (defvar *a* (cffi:foreign-alloc :pointer        :initial-element (cffi-sys:null-pointer))) *A* CL-USER> (cffi:mem-ref *a* :pointer) NIL

Attached is your patch with the handling for mem-ref added.

Getting rid of NIL as null pointer will require additional changes:

Thanks. I've pushed a patch based on yours and took care of the additional cases you've identified. Hope that fixes your problems. -- Luís Oliveira http://student.dei.uc.pt/~lmoliv/