GROUPLIST_INCREMENT
(*keyshares_max + GROUPLIST_INCREMENT) * sizeof(**keyshares_arr));
(*keyshares_max + GROUPLIST_INCREMENT) * sizeof(**encoded_pubkey_arr));
*keyshares_max += GROUPLIST_INCREMENT;
size_t keyshares_max = GROUPLIST_INCREMENT;
(garg->gidmax + GROUPLIST_INCREMENT) * sizeof(*garg->gid_arr));
garg->gidmax += GROUPLIST_INCREMENT;
(garg->ksidmax + GROUPLIST_INCREMENT) * sizeof(*garg->ksid_arr));
garg->ksidmax += GROUPLIST_INCREMENT;
size_t newcnt = garg->tplmax + GROUPLIST_INCREMENT;
gcb.gidmax = GROUPLIST_INCREMENT;
gcb.tplmax = GROUPLIST_INCREMENT;
gcb.ksidmax = GROUPLIST_INCREMENT;