fio.h (FSEEK): Enforce type of second parameter to be off_t when...

	* libI77/fio.h (FSEEK): Enforce type of second parameter to be
	off_t when prototype is missing from system headers for the
	non-standard function.

From-SVN: r48546

libf2c/ChangeLog

+2002-01-04  Loren J. Rittle  <ljrittle@acm.org>
+
+	* libI77/fio.h (FSEEK): Enforce type of second parameter to be
+	off_t when prototype is missing from system headers for the
+	non-standard function.
+
 2002-01-03  Loren J. Rittle  <ljrittle@acm.org>
 
 	* Makefile.in ($(LIBG2C):): Let libtool decide when to add -lc.

libf2c/libI77/fio.h

@@ -18,7 +18,11 @@
 /* Only use fseeko/ftello if they are both there.  */
 
 #if defined (HAVE_FSEEKO) && defined (HAVE_FTELLO)
-#define FSEEK fseeko
+/* The cast helps in any case where the fseeko() prototype is somehow missing
+   (perhaps because _POSIX_SOURCE is defined and the system headers try
+   to keep a clean namespace in that case) even though the autoconf test
+   found the non-standard function via its trivial link test.  */
+#define FSEEK(a,b,c) fseeko(a, (off_t) b, c)
 #define FTELL ftello
 #else
 #define FSEEK fseek