#include <assert.h>
#include <stdio.h>
#include <sys/ipc.h>
#include <sys/shm.h>

int main(void) {
    int id = shmget(IPC_PRIVATE, 4096, IPC_CREAT | 0600);
    assert(id >= 0);
    void *ptr = shmat(id, 0, 0);
    assert(ptr != (void *)-1);
    assert(shmdt(ptr) == 0);
    assert(shmctl(id, IPC_RMID, 0) == 0);
    puts("shmget ok");
    return 0;
}