1  /* PR debug/50017 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O3 -fcompare-debug" } */
       4  
       5  struct S { int r, i; };
       6  
       7  void
       8  foo (struct S *x, int y)
       9  {
      10    int i;
      11    for (i = 1; i < y; i++)
      12      {
      13        struct S a, b, c;
      14        a = x[0];
      15        b = x[i];
      16        c.r = a.r * b.r - a.i * b.i;
      17        c.i = a.r * b.i + a.i * b.r;
      18        x[i] = c;
      19      }
      20  }