date_len         1635 lib/common/iso8601.c         date_len = 0, nano_digits = 0;
date_len         1679 lib/common/iso8601.c         date_len += strftime(&date_s[date_len], max-date_len, tmp_fmt_s, &tm);
date_len         1690 lib/common/iso8601.c             date_len += snprintf(&date_s[date_len], max-date_len,
date_len         1699 lib/common/iso8601.c     return (date_len == 0)?NULL:strdup(date_s);