$NetBSD: patch-prot.h,v 1.1 2013/05/23 14:57:32 joerg Exp $

--- prot.h.orig	1999-11-09 07:23:46.000000000 +0000
+++ prot.h
@@ -1,7 +1,8 @@
 #ifndef PROT_H
 #define PROT_H
 
-extern int prot_gid();
-extern int prot_uid();
+#include <unistd.h>
+extern int prot_gid(gid_t);
+extern int prot_uid(uid_t);
 
 #endif