diff --git a/src/include/port.h b/src/include/port.h
index 21c8b92643..59a15c103c 100644
--- a/src/include/port.h
+++ b/src/include/port.h
@@ -6,7 +6,7 @@
  * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/port.h,v 1.105 2006/10/19 20:56:22 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/port.h,v 1.106 2006/11/28 01:12:33 adunstan Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -145,6 +145,9 @@ extern unsigned char pg_tolower(unsigned char ch);
 #ifdef sprintf
 #undef sprintf
 #endif
+#ifdef vfprintf
+#undef vfprintf
+#endif
 #ifdef fprintf
 #undef fprintf
 #endif
@@ -161,6 +164,7 @@ extern int
 pg_sprintf(char *str, const char *fmt,...)
 /* This extension allows gcc to check the format string */
 __attribute__((format(printf, 2, 3)));
+extern int	pg_vfprintf(FILE * stream, const char *fmt, va_list args);
 extern int
 pg_fprintf(FILE *stream, const char *fmt,...)
 /* This extension allows gcc to check the format string */
@@ -179,12 +183,14 @@ __attribute__((format(printf, 1, 2)));
 #define vsnprintf(...)	pg_vsnprintf(__VA_ARGS__)
 #define snprintf(...)	pg_snprintf(__VA_ARGS__)
 #define sprintf(...)	pg_sprintf(__VA_ARGS__)
+#define vfprintf(...)	pg_vfprintf(__VA_ARGS__)
 #define fprintf(...)	pg_fprintf(__VA_ARGS__)
 #define printf(...)		pg_printf(__VA_ARGS__)
 #else
 #define vsnprintf		pg_vsnprintf
 #define snprintf		pg_snprintf
 #define sprintf			pg_sprintf
+#define vfprintf		pg_vfprintf
 #define fprintf			pg_fprintf
 #define printf			pg_printf
 #endif
diff --git a/src/port/snprintf.c b/src/port/snprintf.c
index e4472e5bdb..d588ac3bc5 100644
--- a/src/port/snprintf.c
+++ b/src/port/snprintf.c
@@ -31,7 +31,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $PostgreSQL: pgsql/src/port/snprintf.c,v 1.32 2006/10/04 00:30:14 momjian Exp $
+ * $PostgreSQL: pgsql/src/port/snprintf.c,v 1.33 2006/11/28 01:12:34 adunstan Exp $
  */
 
 #include "c.h"
@@ -99,6 +99,7 @@
 #undef	vsnprintf
 #undef	snprintf
 #undef	sprintf
+#undef	vfprintf
 #undef	fprintf
 #undef	printf
 
@@ -209,7 +210,7 @@ pg_sprintf(char *str, const char *fmt,...)
 	return len;
 }
 
-static int
+int
 pg_vfprintf(FILE *stream, const char *fmt, va_list args)
 {
 	PrintfTarget target;