1  /* PR middle-end/41935 */
       2  /* { dg-do run } */
       3  /* { dg-options "-O2" } */
       4  
       5  extern void abort (void);
       6  struct A { int a; int b[10]; };
       7  
       8  int
       9  foo (struct A *p)
      10  {
      11    return __builtin_offsetof (struct A, b[p->a]);
      12  }
      13  
      14  int
      15  main ()
      16  {
      17    struct A a;
      18    a.a = 7;
      19    if (foo (&a) != 7 * sizeof (int) + __builtin_offsetof (struct A, b))
      20      abort ();
      21    a.a = 2;
      22    if (foo (&a) != 2 * sizeof (int) + __builtin_offsetof (struct A, b))
      23      abort ();
      24    return 0;
      25  }