http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56724
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> 2013-03-25 18:45:24 UTC --- (In reply to comment #0) > t.c: In function ‘docall’: > t.c:8:3: warning: passing argument 3 of ‘callf’ from incompatible pointer type > [enabled by default] > If you have many parameters, it can be hard to find the right one. Though it does say the 3rd argument though.