1  /* PR middle-end/52419 */
       2  /* { dg-do run } */
       3  
       4  extern void abort (void);
       5  
       6  typedef long long V
       7    __attribute__ ((vector_size (2 * sizeof (long long)), may_alias));
       8  
       9  typedef struct S { V b; } P __attribute__((aligned (1)));
      10  
      11  struct __attribute__((packed)) T { char c; P s; };
      12  
      13  __attribute__((noinline, noclone)) void
      14  foo (P *p)
      15  {
      16    p->b[1] = 5;
      17  }
      18  
      19  int
      20  main ()
      21  {
      22    V a = { 3, 4 };
      23    struct T t;
      24  
      25    t.s.b = a;
      26    foo (&t.s);
      27  
      28    if (t.s.b[0] != 3 || t.s.b[1] != 5)
      29      abort ();
      30  
      31    return 0;
      32  }