helper/ioutil: silence gcc-8 on strncpy

[fw/openocd] / src / helper / ioutil.c

diff --git a/src/helper/ioutil.c b/src/helper/ioutil.c
index d4f39e242b2bd6086843f4b099ac910af1c34b40..c103ce173f73c97da3afe91730a1c6a0f2622418 100644 (file)
--- 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;