#include "test.h"
#define MKEY 0x2222
int testmatshm() {

  int shmid = -1;
  void *shmp;
  shmid = shmget(MKEY, 1024, IPC_CREAT | IPC_EXCL | OBJ_PERMS);
  if (shmid == -1 && errno == EEXIST) {
    printf("first create\n");
    shmid = shmget(MKEY, 0, 0);
  }

  if (shmid == -1)
    err_exit(errno, "testmatshm shmget");

  shmp = shmat(shmid, NULL, 0);
}

typedef struct buf_t { char buf[7]; } buf_t;

void test(int size) {
  char buf[size];
  printf("size = %d\n", sizeof(buf));
}

char msg[10];
int main() {
  // testmatshm();
  // testmatshm();

  // sleep(60);

  // printf("size = %d, msg = %d\n", sizeof(buf_t), sizeof(msg));
  test(12);
}