Last commit was slightly hasty: #include <string.h> is required on

-CURRENT to be WARNS-safe (but not -STABLE for some reason)

games/primes/primes.c

@@ -72,6 +72,7 @@ static const char rcsid[] =
 #include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 
 #include "primes.h"