1  /* Mis-aligned packed structures.  */
       2  
       3  typedef struct
       4  {
       5    char b0;
       6    char b1;
       7    char b2;
       8    char b3;
       9    char b4;
      10    char b5;
      11  } __attribute__ ((packed)) b_struct;
      12  
      13  
      14  typedef struct
      15  {
      16    short a;
      17    long b;
      18    short c;
      19    short d;
      20    b_struct e;
      21  } __attribute__ ((packed)) a_struct;
      22  
      23  
      24  int
      25  main(void)
      26  {
      27    volatile a_struct *a;
      28    volatile a_struct b;
      29  
      30    a = &b;
      31    *a = (a_struct){1,2,3,4};
      32    a->e.b4 = 'c';
      33  
      34    if (a->a != 1 || a->b != 2 || a->c != 3 || a->d != 4 || a->e.b4 != 'c')
      35      abort ();
      36  
      37    exit (0);
      38  }