th_msg
msglen = sizeof(buf) - (&tp->th_msg[0] - buf);
strlcpy(tp->th_msg, strerror(error - 100), msglen);
strlcpy(tp->th_msg, pe->e_msg, msglen);
syslog(LOG_DEBUG, "Send NACK %s", tp->th_msg);
length = strlen(tp->th_msg);
msglen = &tp->th_msg[length + 1] - buf;
ntohs(ap->th_code), ap->th_msg);
ntohs(dp->th_code), dp->th_msg);
msglen = sizeof(ackbuf) - (&tp->th_msg[0] - ackbuf);
(void)strlcpy(tp->th_msg, strerror(error - 100), msglen);
(void)strlcpy(tp->th_msg, pe->e_msg, msglen);
length = strlen(tp->th_msg);
msglen = &tp->th_msg[length + 1] - ackbuf;
tp->th_msg);