1 files changed, 6 insertions, 4 deletions

diff --git a/src/lib/libc/net/ethers.c b/src/lib/libc/net/ethers.c
index d4243ff1da..af31bb8e60 100644
--- a/src/lib/libc/net/ethers.c
+++ b/src/lib/libc/net/ethers.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: ethers.c,v 1.20 2005/08/06 20:30:03 espie Exp $       */
+/*      $OpenBSD: ethers.c,v 1.21 2013/11/24 23:51:28 deraadt Exp $     */
 
 /*
  * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
@@ -64,7 +64,7 @@ _ether_aton(const char *s, struct ether_addr *e)
         long l;
         char *pp;
 
-        while (isspace(*s))
+        while (isspace((unsigned char)*s))
                 s++;
 
         /* expect 6 hex octets separated by ':' or space/NUL if last octet */
@@ -72,7 +72,9 @@ _ether_aton(const char *s, struct ether_addr *e)
                 l = strtol(s, &pp, 16);
                 if (pp == s || l > 0xFF || l < 0)
                         return (NULL);
-                if (!(*pp == ':' || (i == 5 && (isspace(*pp) || *pp == '\0'))))
+                if (!(*pp == ':' ||
+                    (i == 5 && (isspace((unsigned char)*pp) ||
+                    *pp == '\0'))))
                         return (NULL);
                 e->ether_addr_octet[i] = (u_char)l;
                 s = pp + 1;
@@ -216,7 +218,7 @@ ether_line(const char *line, struct ether_addr *e, char *hostname)
                 goto bad;
 
         /* Now get the hostname */
-        while (isspace(*p))
+        while (isspace((unsigned char)*p))
                 p++;
         if (*p == '\0')
                 goto bad;