Bug: https://bugs.gentoo.org/897858
--- a/handlers/cmd-control.c
+++ b/handlers/cmd-control.c
@@ -16,6 +16,7 @@
 static char const RCSID[] =
 "$Id: cmd-control.c,v 1.2 2002/09/30 19:45:00 dskoll Exp $";
 #include <stdio.h>
+#include <string.h>
 #include <sys/socket.h>
 #include <sys/un.h>
 #include <sys/types.h>