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// { dg-options "-std=gnu++0x" }

// Copyright (C) 2005, 2006, 2007, 2009 Free Software Foundation

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the

// terms of the GNU General Public License as published by the

// Free Software Foundation; either version 3, or (at your option)

// any later version.

// This library is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING3.  If not see

// <http://www.gnu.org/licenses/>.

// 20.6.6.2 Template class shared_ptr [util.smartptr.shared]

#include <memory>

#include <testsuite_hooks.h>

struct A

{

  virtual ~A() { }

};

struct B : A

{

};

// 20.6.6.2.6 shared_ptr comparison [util.smartptr.shared.cmp]

int

test01()

{

  bool test __attribute__((unused)) = true;

  // test empty shared_ptrs compare equivalent

  std::shared_ptr<A> p1;

  std::shared_ptr<B> p2;

  VERIFY( p1 == p2 );

  VERIFY( !(p1 != p2) );

  VERIFY( !(p1 < p2) && !(p2 < p1) );

  return 0;

}

// Construction from pointer

int

test02()

{

  bool test __attribute__((unused)) = true;

  std::shared_ptr<A> A_default;

  std::shared_ptr<A> A_from_A(new A);

  VERIFY( A_default != A_from_A );

  VERIFY( !(A_default == A_from_A) );

  VERIFY( (A_default < A_from_A) || (A_from_A < A_default) );

  std::shared_ptr<B> B_from_B(new B);

  VERIFY( B_from_B != A_from_A );

  VERIFY( !(B_from_B == A_from_A) );

  VERIFY( (B_from_B < A_from_A) || (A_from_A < B_from_B) );

  A_from_A.reset();

  VERIFY( A_default == A_from_A );

  VERIFY( !(A_default != A_from_A) );

  VERIFY( !(A_default < A_from_A) && !(A_from_A < A_default) );

  B_from_B.reset();

  VERIFY( B_from_B == A_from_A );

  VERIFY( !(B_from_B != A_from_A) );

  VERIFY( !(B_from_B < A_from_A) && !(A_from_A < B_from_B) );

  return 0;

}

int

test03()

{

  bool test __attribute__((unused)) = true;

  std::shared_ptr<A> p1;

  // check other operators are defined

  VERIFY( p1 <= p1 );

  VERIFY( p1 >= p1 );

  VERIFY( !(p1 > p1) );

  return 0;

}

int

main()

{

  test01();

  test02();

  test03();

  return 0;

}