for (;;) CHECKe(write(STDOUT_FILENO, ".", 1));
for (;;) { if (alarmed) { alarmed = 0; CHECKe(write(STDOUT_FILENO, "!", 1)); } }
main(){	pthread_t slpr;	ASSERT(signal(SIGALRM, handler) != SIG_ERR);	CHECKe(alarm(1));	CHECKr(pthread_create(&slpr, NULL, sleeper, NULL));	/* ASSERT(sleep(1) == 0); */	for (;;)		CHECKe(write(STDOUT_FILENO, ".", 1));}