Pass unsigned char to isdigit(3).

From Michael McConville; OK guenther@

diff --git a/usr.sbin/syslogd/syslogd.c b/usr.sbin/syslogd/syslogd.c
index 4513772..42dda9f 100644 (file)
--- a/usr.sbin/syslogd/syslogd.c
+++ b/usr.sbin/syslogd/syslogd.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: syslogd.c,v 1.196 2015/10/11 20:23:49 guenther Exp $  */
+/*     $OpenBSD: syslogd.c,v 1.197 2015/10/11 23:51:26 bluhm Exp $     */
 
 /*
  * Copyright (c) 1983, 1988, 1993, 1994
@@ -1123,7 +1123,7 @@ octet_counting(struct evbuffer *evbuf, char **msg, int drain)
         * It can be assumed that octet-counting framing is used if a syslog
         * frame starts with a digit.
         */
-       if (buf >= end || !isdigit(*buf))
+       if (buf >= end || !isdigit((unsigned char)*buf))
                return (-1);
        /*
         * SYSLOG-FRAME = MSG-LEN SP SYSLOG-MSG
@@ -1131,7 +1131,7 @@ octet_counting(struct evbuffer *evbuf, char **msg, int drain)
         * We support up to 5 digits in MSG-LEN, so the maximum is 99999.
         */
        for (p = buf; p < end && p < buf + 5; p++) {
-               if (!isdigit(*p))
+               if (!isdigit((unsigned char)*p))
                        break;
        }
        if (buf >= p || p >= end || *p != ' ')