check_len
check_len("dprintf(hello)", len, strlen(hello));
check_len("dprintf(world)", len, strlen(world) + 1);
check_len("dprintf(hello, world)", len,
check_len("read()", len,
idm_bufpat_check(idm_buf_t *idb, int check_len, idm_bufpat_check_type_t type)
len = (type == BP_CHECK_QUICK) ? sizeof (idm_bufpat_t) : check_len;
idm_bufpat_check(idm_buf_t *idb, int check_len, idm_bufpat_check_type_t type);