static void     send_proxy_data(zbx_socket_t *sock, const zbx_timespec_t *ts,
                const zbx_config_comms_args_t *config_comms, zbx_get_program_type_f get_program_type_cb)
{
        struct zbx_json         j;
        zbx_uint64_t            areg_lastid = 0, history_lastid = 0, discovery_lastid = 0;
        char                    *error = NULL, *buffer = NULL;
        int                     availability_ts, more_history, more_discovery, more_areg, proxy_delay, more;
...
        zbx_pb_history_get_rows(&j, &history_lastid, &more_history);        <-- more_history uninitialized
        zbx_pb_discovery_get_rows(&j, &discovery_lastid, &more_discovery);  <-- more_discovery uninitialied
        zbx_pb_autoreg_get_rows(&j, &areg_lastid, &more_areg);       <-- more_areg uninitialized
...

int     zbx_pb_history_get_rows(struct zbx_json *j, zbx_uint64_t *lastid, int *more)
{
        int     state, ret;

        zabbix_log(LOG_LEVEL_DEBUG, "In %s() lastid:" ZBX_FS_UI64 ", more:" ZBX_FS_UI64, __func__, *lastid, *more); <-- '*more' is of type 'int' and should be '%d', not ZBX_FS_UI64

int     zbx_pb_discovery_get_rows(struct zbx_json *j, zbx_uint64_t *lastid, int *more)
{
        int     state, ret;

        zabbix_log(LOG_LEVEL_DEBUG, "In %s() lastid:" ZBX_FS_UI64 ", more:" ZBX_FS_UI64, __func__, *lastid, *more); <-- '*more' is of type 'int' and should be '%d', not ZBX_FS_UI64

int     zbx_pb_autoreg_get_rows(struct zbx_json *j, zbx_uint64_t *lastid, int *more)
{
        int     ret, state;

        zabbix_log(LOG_LEVEL_DEBUG, "In %s() lastid:" ZBX_FS_UI64 ", more:" ZBX_FS_UI64, __func__, *lastid, *more); <-- '*more' is of type 'int' and should be '%d', not ZBX_FS_UI64