X-Git-Url: https://review.openocd.org/gitweb?a=blobdiff_plain;f=src%2Fhelper%2Fioutil.c;h=c103ce173f73c97da3afe91730a1c6a0f2622418;hb=4738a55da416176542efa1b554020de275a5b4e5;hp=d4f39e242b2bd6086843f4b099ac910af1c34b40;hpb=8807a5937e5fe5d09828c3e535beafb48e171621;p=openocd.git

diff --git a/src/helper/ioutil.c b/src/helper/ioutil.c
index d4f39e242b..c103ce173f 100644
--- a/src/helper/ioutil.c
+++ b/src/helper/ioutil.c
@@ -403,7 +403,7 @@ static int ioutil_Jim_Command_mac(Jim_Interp *interp, int argc,
 		{
 			if (strcmp("eth0", ifr->ifr_name) != 0)
 				continue;
-			strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
+			strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name) - 1);
 			if (ioctl(SockFD, SIOCGIFHWADDR, &ifreq) < 0) {
 				close(SockFD);
 				return JIM_ERR;