1  extern void abort (void);
       2  extern void exit (int);
       3  
       4  union iso_directory_record {
       5     char carr[4];
       6     struct {
       7             unsigned char name_len [1];
       8             char name [0];
       9     } u;
      10  } entry;
      11  
      12  void set(union iso_directory_record *);
      13  
      14  int main (void)
      15  {
      16     union iso_directory_record *de;
      17  
      18     de = &entry;
      19     set(de);
      20  
      21     if (de->u.name_len[0] == 1 && de->u.name[0] == 0)
      22       exit (0);
      23     else
      24       abort ();
      25  }
      26  
      27  void set (union iso_directory_record *p)
      28  {
      29     p->carr[0] = 1;
      30     p->carr[1] = 0;
      31     return;
      32  }