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-rw-r--r--freebsd/sbin/ping/ping.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/freebsd/sbin/ping/ping.c b/freebsd/sbin/ping/ping.c
index c320a8fb..6ec8a5f2 100644
--- a/freebsd/sbin/ping/ping.c
+++ b/freebsd/sbin/ping/ping.c
@@ -1728,7 +1728,7 @@ fill(bp, patp)
u_int ii, jj, kk;
for (cp = patp; *cp; cp++) {
- if (!isxdigit(*cp))
+ if (!isxdigit((unsigned char) *cp))
errx(EX_USAGE,
"patterns must be specified as hex digits");