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// { dg-do compile { target c++11 } }

// Copyright (C) 2011-2019 Free Software Foundation, Inc.
//
// 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/>.

// 20.7.1 Class template unique_ptr [unique.ptr]

#include <memory>

// DR 1401
void test01()
{
  std::unique_ptr<int> ptr1, ptr2;
  if (ptr1 == ptr2)
    { }
  if (ptr1 == nullptr)
    { }
  if (nullptr == ptr1)
    { }
  if (ptr1 != ptr2)
    { }
  if (ptr1 != nullptr)
    { }
  if (nullptr != ptr1)
    { }
  if (ptr1 < ptr2)
    { }
  if (ptr1 < nullptr)
    { }
  if (nullptr < ptr1)
    { }
  if (ptr1 <= ptr2)
    { }
  if (ptr1 <= nullptr)
    { }
  if (nullptr <= ptr1)
    { }
  if (ptr1 > ptr2)
    { }
  if (ptr1 > nullptr)
    { }
  if (nullptr > ptr1)
    { }
  if (ptr1 >= ptr2)
    { }
  if (ptr1 >= nullptr)
    { }
  if (nullptr >= ptr1)
    { }
}