void (*putchar)(char),
void (*flush)(void)) __reentrant
{
-#if AO_NUM_STDIOS > 1
if (ao_num_stdios == AO_NUM_STDIOS)
ao_panic(AO_PANIC_STDIO);
-#endif
ao_stdios[ao_num_stdios]._pollchar = _pollchar;
ao_stdios[ao_num_stdios].putchar = putchar;
ao_stdios[ao_num_stdios].flush = flush;