ao_stdios[ao_num_stdios]._pollchar = _pollchar;
ao_stdios[ao_num_stdios].putchar = putchar;
ao_stdios[ao_num_stdios].flush = flush;
ao_stdios[ao_num_stdios]._pollchar = _pollchar;
ao_stdios[ao_num_stdios].putchar = putchar;
ao_stdios[ao_num_stdios].flush = flush;