1  /* PR target/64513 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O2 -mstack-arg-probe" } */
       4  
       5  struct A {};
       6  struct B { struct A y; };
       7  int foo (struct A);
       8  
       9  int
      10  bar (int x)
      11  {
      12    struct B b;
      13    int c;
      14    while (x--)
      15      c = foo (b.y);
      16    return c;
      17  }