read() will read both write()s

#include <stdio.h>

#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

int main()
{
    char buf[32] = {0};

    int fd = open("pipe", O_RDONLY);

    printf("fd = %d\n", fd);

    // Some sort of CPU processing occurs...
    sleep(10);

    read(fd, buf, 6);
    printf("buf: %s\n", buf);
}

/* Execute this, then run this Python:
 * p = open('pipe', 'wb'); p.write('Hi'); p.write('There'); p.flush()
 */