#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>

#include <assert.h>
#include <stdio.h>

int
main(int argc, char *argv[])
{
        key_t shmkey;
        int shmid;
        char *addr;
        size_t size;
        int rc;

        size = 1024 * 1024;
        shmkey = ftok(argv[0], 1);
        shmid = shmget(shmkey, size, IPC_CREAT | 0666);
        printf("shmid=%d\n", shmid);
        addr = shmat(shmid, (void *)0x0700000000000000, SHM_RND);
        printf("addr=%p\n", addr);
        assert(0 != addr);
        memset(addr, 0, size);

        rc = shmdt(addr);
        printf("rc=%d\n", rc);
        rc = shmctl(shmid, IPC_RMID, 0);
        assert(0 == rc);
        return 0;
}