Hi,
I have a question concerning a foreign function which is supposed to
write to a Unix stream/file.
The signature of the C function is:
void print_prolog_graph(FILE *stream);
My foreign function is defined as:
(def-alien-routine "print_prolog_graph" void
(stream :ptr))
I am trying to pass the file stream's SAP object to the ff, but this
does not work. Nothing is written to the stream, and sometimes I get
a segmentation fault:
(with-open-file (stream "temp.lisp" :direction :output :if-exists :supersede)
(print-prolog-graph (common-lisp::fd-stream-obuf-sap stream)))
Any idea how to do this right?
Cheers, Paul
