3 files changed, 5 insertions, 1 deletions

diff --git a/lib/libc/stdio/findfp.c b/lib/libc/stdio/findfp.c
index 64548db20b3f..2986a2ccbbd8 100644
--- a/lib/libc/stdio/findfp.c
+++ b/lib/libc/stdio/findfp.c
@@ -127,6 +127,10 @@ found:
  * XXX.  Force immediate allocation of internal memory.  Not used by stdio,
  * but documented historically for certain applications.  Bad applications.
  */
+__warn_references(f_prealloc, 
+	"warning: this program uses f_prealloc(), which is stupid.");
+
+void
 f_prealloc()
 {
 	register struct glue *g;
diff --git a/lib/libc/stdio/mktemp.c b/lib/libc/stdio/mktemp.c
index 6cedd6a6be43..3f5966e1f424 100644
--- a/lib/libc/stdio/mktemp.c
+++ b/lib/libc/stdio/mktemp.c
@@ -40,6 +40,7 @@ static char sccsid[] = "@(#)mktemp.c	8.1 (Berkeley) 6/4/93";
 #include <fcntl.h>
 #include <errno.h>
 #include <stdio.h>
+#include <unistd.h>
 #include <ctype.h>
 
 static int _gettemp();
diff --git a/lib/libc/stdio/vsscanf.c b/lib/libc/stdio/vsscanf.c
index 540f2906b89b..e776689f9a0e 100644
--- a/lib/libc/stdio/vsscanf.c
+++ b/lib/libc/stdio/vsscanf.c
@@ -57,7 +57,6 @@ vsscanf(str, fmt, ap)
 	const char *fmt;
 	_BSD_VA_LIST_ ap;
 {
-	int ret;
 	FILE f;
 
 	f._flags = __SRD;