1  /* PR middle-end/57748 */
       2  /* { dg-do run } */
       3  /* ICE in expand_assignment:
       4     misalignp == true, !MEM_P (to_rtx), offset != 0,
       5     => gcc_assert (TREE_CODE (offset) == INTEGER_CST) */
       6  
       7  #include <stdlib.h>
       8  
       9  extern void abort (void);
      10  
      11  typedef long long V
      12    __attribute__ ((vector_size (2 * sizeof (long long)), may_alias));
      13  
      14  typedef struct S { V a; V b[0]; } P __attribute__((aligned (1)));
      15  
      16  struct __attribute__((packed)) T { char c; P s; };
      17  
      18  void __attribute__((noinline, noclone))
      19  check (struct T *t)
      20  {
      21    if (t->s.b[0][0] != 3 || t->s.b[0][1] != 4)
      22      abort ();
      23  }
      24  
      25  int __attribute__((noinline, noclone))
      26  get_i (void)
      27  {
      28    return 0;
      29  }
      30  
      31  void __attribute__((noinline, noclone))
      32  foo (P *p)
      33  {
      34    V a = { 3, 4 };
      35    int i = get_i ();
      36    p->b[i] = a;
      37  }
      38  
      39  int
      40  main ()
      41  {
      42    struct T *t = (struct T *) calloc (128, 1);
      43  
      44    foo (&t->s);
      45    check (t);
      46  
      47    free (t);
      48    return 0;
      49  }