Borland CC 5.5.1 needs ssize_t, per cnliou9@fastmail.fm.

src/include/port/win32.h

-/* $PostgreSQL: pgsql/src/include/port/win32.h,v 1.79 2007/11/15 21:14:44 momjian Exp $ */
+/* $PostgreSQL: pgsql/src/include/port/win32.h,v 1.80 2007/11/24 01:32:48 momjian Exp $ */
 
 #if defined(_MSC_VER) || defined(__BORLANDC__)
 #define WIN32_ONLY_COMPILER
@@ -280,8 +280,8 @@ extern void _dosmaperr(unsigned long);
 
 /* Things that exist in MingW headers, but need to be added to MSVC */
 #ifdef WIN32_ONLY_COMPILER
-#ifndef __BORLANDC__
 typedef long ssize_t;
+#ifndef __BORLANDC__
 typedef unsigned short mode_t;
 #endif