1  /* PR middle-end/101062 */
       2  /* { dg-do run } */
       3  /* { dg-options "-O2 -fno-toplevel-reorder -frename-registers" } */
       4  
       5  union U { signed b : 5; };
       6  int c;
       7  volatile union U d[7] = { { 8 } };
       8  short e = 1;
       9  
      10  __attribute__((noipa)) void
      11  foo ()
      12  {
      13    d[6].b = 0;
      14    d[6].b = 0;
      15    d[6].b = 0;
      16    d[6].b = 0;
      17    d[6].b = 0;
      18    e = 0;
      19    c = 0;
      20  }
      21  
      22  int
      23  main ()
      24  {
      25    foo ();
      26    if (e != 0)
      27      __builtin_abort ();
      28    return 0;
      29  }