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

// Copyright (C) 2011-2023 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 D;

struct B
{
 B& operator=(D&) = delete;

 template<class T>
   void operator()(T*) const {}
};

struct D : B { };

// libstdc++/48635
void f()
{
  B b;
  D d;

  std::unique_ptr<int, B&> ub(nullptr, b);
  std::unique_ptr<int, B> ub2(nullptr, b);
  std::unique_ptr<int, D&> ud(nullptr, d);
  ub = std::move(ud); // { dg-error "no match" }
  ub2 = ud; // { dg-error "no match" }

  std::unique_ptr<int[], B&> uba(nullptr, b);
  std::unique_ptr<int[], D&> uda(nullptr, d);
  uba = std::move(uda); // { dg-error "no match" }
}

// { dg-prune-output "no type" }