[slime-devel] printing to stdout from C functions

Hi, I am debugging a program that calls some C functions via CFFI. Printing stuff from C would be useful (via printf), but the output doesn't show up (neither in the slime window, nor in *inferior-lisp*). I am using SBCL, inside Emacs and SLIME. Is there a way to see the output of printf called from C somewhere? Thanks, Tamas