1  /* PR middle-end/58970 */
       2  
       3  struct T { int b : 1; };
       4  struct S { struct T t[1]; };
       5  
       6  void
       7  foo (int x, struct S *s)
       8  {
       9    if (x == -1)
      10      s->t[x].b = 0;
      11  }