Geoff Wing <mason@primenet.com.au> typed:
: Christos Zoulas <christos@netbsd.org> typed:
:: Module Name:	src
:: Committed By:	christos
:: Date:		Wed Oct 25 23:49:31 UTC 2006
:: Modified Files:
:: 	src/lib/libc: shlib_version
:: 	src/lib/libc/gen: Makefile.inc syslog.3 syslog.c
:: 	src/lib/libc/include: namespace.h
:: Log Message:
:: add _r functions for syslog from OpenBSD
: Did you forget to commit sys/sys/syslog.h with struct syslog_data,
: SYSLOG_DATA_INIT, and prototype updates?

Also:

--- src/usr.sbin/pf/compat_openbsd.h.org	2005-03-16 17:33:49.000000000 +1100
+++ src/usr.sbin/pf/compat_openbsd.h	2006-10-26 14:08:39.000000000 +1000
@@ -39,29 +39,6 @@
 #include <stdarg.h>
 #include <syslog.h>
 
-#define	openlog_r(ident, logopt, fac, data)	/* nothing */
-
-struct syslog_data {
-#if !defined(__GNUC__)
-	/* empty structure is gcc extension */
-	char dummy;
-#endif
-};
-#define	SYSLOG_DATA_INIT	{}
-
-static __inline void syslog_r(int pri, struct syslog_data *data,
-    const char *fmt, ...) __unused;
-
-static __inline void
-syslog_r(int pri, struct syslog_data *data, const char *fmt, ...)
-{
-	va_list ap;
-
-	va_start(ap, fmt);
-	vsyslog(pri, fmt, ap);
-	va_end(ap);
-}
-
 /*
  * sys/queue.h
  */

Regards,
Geoff