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// Test PR 17400.  Test case provided by Serge Belyshev.

/* { dg-do compile } */

/* { dg-options "-O1" } */

void inc (int &);

bool dec_test (int &);

struct A

{

  int c;

  friend void AddRef (A * p)

  {

    inc (p->c);

  }

  friend void Release (A * p)

  {

    if(dec_test (p->c))

      delete p;

  }

};

struct B

{

  B (A *p) : obj(p)

  {

    AddRef (obj);

  }

  ~B()

  {

    Release (obj);

  }

  void swap (B &rhs)

  {

    A * tmp = obj;

    obj = rhs.obj;

    rhs.obj = tmp;

  }

  A *obj;

};

void bar (A *p1, A* p2)

{

    B px (p1);

    B px2 (p2);

    px.swap (px2);

}