text: // { dg-do compile { target c++11 } }
  
  // Copyright (C) 2008-2017 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/>.
  
  #include <memory>
  
  struct base { virtual ~base() {} };
  struct derived : base {};
  
  void
  test01()
  {
    std::unique_ptr<derived> p1(new derived);
    std::unique_ptr<derived> p2(new derived);
  //  p2 = p1;  // should not compile
    p2 = std::move(p1);
    std::unique_ptr<base> p3(new base);
  //  p3 = p2;  // should not compile
    p3 = std::move(p2);
  }
  
  void
  test02()
  {
    std::unique_ptr<int[]> p1(new int(420));
    std::unique_ptr<int[]> p2 = p1; // { dg-error "deleted" }
  }
  
  void
  test03()
  {
    std::unique_ptr<int[2]> p1(new int[3]); // { dg-error "no match" }
    std::unique_ptr<int[2]> p2 = p1; // { dg-error "deleted" }
  }
  
  struct base_pointer { operator base*() const { return nullptr; } };
  
  template<typename T>
  struct deleter
  {
    deleter() = default;
    template<typename U>
      deleter(const deleter<U>) { }
    typedef T pointer;
    void operator()(T) const { }
  };
  
  void
  test04()
  {
    // Disallow conversions from incompatible deleter
    std::unique_ptr<derived[], deleter<base_pointer>> p;
    std::unique_ptr<base[], deleter<base*>> upA;
    upA = std::move(p);  // { dg-error "no match" }
  }
  
  // { dg-prune-output "include" }
  