1  /* { dg-do compile } */
       2  /* { dg-options "-O -march=z196 -m64 -w" } */
       3  union U { int r; float f; };
       4  struct A {
       5    int a;
       6      union U b[64];
       7      };
       8      double foo (double);
       9  
      10  void
      11  bar (struct A *z, int x)
      12  {
      13    union U y;
      14    y.f = foo (z->b[x].f);
      15    z->a = y.r ? 4 : y.r;
      16  }