Code cleanup:-

The usual stuff, adding missing function prototypes, argument types,
return values, etc. In mktemp.c, convert pid from u_int to pid_t, and
get rid of "extern int errno".

lib/libc/stdio/fsetpos.c

@@ -43,7 +43,7 @@ static char sccsid[] = "@(#)fsetpos.c	8.1 (Berkeley) 6/4/93";
 /*
  * fsetpos: like fseek.
  */
-fsetpos(iop, pos)
+int fsetpos(iop, pos)
 	FILE *iop;
 	const fpos_t *pos;
 {

lib/libc/stdio/fvwrite.c

@@ -49,7 +49,7 @@ static char sccsid[] = "@(#)fvwrite.c	8.1 (Berkeley) 6/4/93";
  * This routine is large and unsightly, but most of the ugliness due
  * to the three different kinds of output buffering is handled here.
  */
-__sfvwrite(fp, uio)
+int __sfvwrite(fp, uio)
 	register FILE *fp;
 	register struct __suio *uio;
 {

lib/libc/stdio/fwalk.c

@@ -43,7 +43,7 @@ static char sccsid[] = "@(#)fwalk.c	8.1 (Berkeley) 6/4/93";
 #include "local.h"
 #include "glue.h"
 
-_fwalk(function)
+int _fwalk(function)
 	register int (*function)();
 {
 	register FILE *fp;

lib/libc/stdio/getw.c

@@ -40,7 +40,7 @@ static char sccsid[] = "@(#)getw.c	8.1 (Berkeley) 6/4/93";
 
 #include <stdio.h>
 
-getw(fp)
+int getw(fp)
 	FILE *fp;
 {
 	int x;

lib/libc/stdio/mktemp.c

@@ -43,9 +43,9 @@ static char sccsid[] = "@(#)mktemp.c	8.1 (Berkeley) 6/4/93";
 #include <unistd.h>
 #include <ctype.h>
 
-static int _gettemp();
+static int _gettemp(char *, int *);
 
-mkstemp(path)
+int mkstemp(path)
 	char *path;
 {
 	int fd;
@@ -61,14 +61,13 @@ mktemp(path)
 }
 
 static
-_gettemp(path, doopen)
+int _gettemp(path, doopen)
 	char *path;
 	register int *doopen;
 {
-	extern int errno;
 	register char *start, *trv;
 	struct stat sbuf;
-	u_int pid;
+	pid_t pid;
 
 	pid = getpid();
 	for (trv = path; *trv; ++trv);		/* extra X's get set to 0's */

lib/libc/stdio/printf.c

@@ -46,7 +46,7 @@ static char sccsid[] = "@(#)printf.c	8.1 (Berkeley) 6/4/93";
 #endif
 
 #if __STDC__
-printf(char const *fmt, ...)
+int printf(char const *fmt, ...)
 #else
 printf(fmt, va_alist)
 	char *fmt;

lib/libc/stdio/refill.c

@@ -44,7 +44,7 @@ static char sccsid[] = "@(#)refill.c	8.1 (Berkeley) 6/4/93";
 #include "local.h"
 
 static
-lflush(fp)
+int lflush(fp)
 	FILE *fp;
 {
 
@@ -57,7 +57,7 @@ lflush(fp)
  * Refill a stdio buffer.
  * Return EOF on eof or error, 0 otherwise.
  */
-__srefill(fp)
+int __srefill(fp)
 	register FILE *fp;
 {