#include <stdio.h>
#include <unistd.h>
#include <errno.h>
int main(int argc, char *argv[])
{
    int pipedes[2] = {3333333, 6666666};
    int ret = pipe2(pipedes, 0);
    printf("pipe2 returned %d\npipedes is {%d, %d}\nerrno is %d (%m)\n",
           ret, pipedes[0], pipedes[1], errno);
    return 0;
}