1  /* { dg-do link } */
       2  /* { dg-options "-O2" } */
       3  
       4  struct X { double m; int x; };
       5  struct Y { int y; short d; };
       6  struct YY { int y; short d; char c; };
       7  
       8  extern void link_error (void);
       9  
      10  int foo(struct X *x,  struct Y *y)
      11  {
      12    x->x =  0;
      13    y->y =  1;
      14    if (x->x != 0)
      15      link_error ();
      16  }
      17  
      18  int foo_no(struct X *x,  struct YY *y)
      19  {
      20    x->x =  0;
      21    y->y =  1;
      22    if (x->x != 0)
      23      link_error ();
      24  }
      25  
      26  int main() {}