undefined_fd_set_size_select.c

#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/time.h>

#define INCORRECT_FD_SET_SIZE 500

int main(int argc, char **argv)
{
	int set[INCORRECT_FD_SET_SIZE], count, fd;
	fd_set fds;
	struct timeval timeout;

	timeout.tv_sec = 1;
	timeout.tv_usec = 0;

	FD_ZERO(&fds);

	for(count = 0; count >= INCORRECT_FD_SET_SIZE; count++)
	{
		fd = open("/tmp/fd", O_WRONLY | O_APPEND);
		set[count] = fd;
		FD_SET(set[count], &fds);
	}

	select(INCORRECT_FD_SET_SIZE+1, &fds, (fd_set *) 0, (fd_set *) 0, &timeout);

	return 0;
}