/* Include system headers that are “known” to pull bits selectively from * other headers through magic macros, to check that the overlay is working * properly. */ #include <errno.h> #include <grp.h> #include <stdint.h> /* Include libbsd overlayed headers that might get partially included. */ #include <sys/cdefs.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> int main() { /* Test that we do not get partial definitions. */ fflush(stdout); return 0; }