--- compiler.c.orig 2008-05-29 20:46:19.000000000 +0200 +++ compiler.c 2008-05-29 20:46:32.000000000 +0200 @@ -1,4 +1,5 @@ #include <stdio.h> +#include <stdlib.h> #include <unistd.h> #include <string.h> #include "bf.h"