SYM_USERS
sym_name(p, SYM_USERS, user->value - 1),
sym_name(p, SYM_USERS, upper->value - 1));
p->sym_val_to_name[SYM_USERS][usrdatum->value - 1] = key;
if (!p->sym_val_to_name[SYM_USERS][user - 1])
#define p_users symtab[SYM_USERS]
*scontext_len += strlen(sym_name(p, SYM_USERS, context->user - 1)) + 1;
sym_name(p, SYM_USERS, context->user - 1),
sym_name(args->oldp, SYM_USERS, oldc->user - 1));