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/* { dg-do run } */

template  struct S

{

  V *f, *l;

  __attribute__ ((noinline)) S (void) { f = 0, l = 0; }

  void foo (V *x)

  {

    if (x->p != 0)

      x->p->n = x->n;

    else

      f = x->n;

    if (x->n != 0)

      x->n->p = x->p;

    else

      l = x->p;

  }

  __attribute__ ((noinline)) void bar (V *x)

  {

    x->n = 0;

    x->p = l;

    if (l != 0)

      l->n = x;

    else

      f = x;

    l = x;

  }

};

struct H;

struct A

{

  S  k;

};

struct H

{

  A *a;

  H *p, *n;

  __attribute__ ((noinline)) H (void) { p = 0, n = 0, a = 0; }

  __attribute__ ((noinline)) H (A *b) : a (b)

  {

    p = 0;

    n = 0;

    if (a != 0)

      a->k.bar (this);

  }

  __attribute__ ((noinline)) H (const H &h) : a (h.a)

  {

    p = 0;

    n = 0;

    if (a != 0)

      a->k.bar (this);

  }

  ~H (void) { if (a != 0) a->k.foo (this); }

  H &operator= (const H &o)

  {

    if (a != 0 || &o == this)

      __builtin_abort ();

    a = o.a;

    if (a != 0)

      a->k.bar (this);

    return *this;

  }

};

__attribute__ ((noinline))

H baz (void)

{

  return H (new A);

}

H g;

int

main (void)

{

  g = baz ();

  if (g.a->k.f != &g)

    __builtin_abort ();

  return 0;

}