1// { dg-options "-std=gnu++11" }
2// { dg-do compile }
3
4// Copyright (C) 2014-2015 Free Software Foundation, Inc.
5//
6// This file is part of the GNU ISO C++ Library.  This library is free
7// software; you can redistribute it and/or modify it under the
8// terms of the GNU General Public License as published by the
9// Free Software Foundation; either version 3, or (at your option)
10// any later version.
11
12// This library is distributed in the hope that it will be useful,
13// but WITHOUT ANY WARRANTY; without even the implied warranty of
14// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15// GNU General Public License for more details.
16
17// You should have received a copy of the GNU General Public License along
18// with this library; see the file COPYING3.  If not see
19// <http://www.gnu.org/licenses/>.
20
21// libstdc++/60497
22
23#include <functional>
24#include <memory>
25
26struct A;
27template<typename T> struct B { T t; };
28
29using UP = std::unique_ptr<B<A>>;
30
31bool f(UP&, UP&) { return true; }
32
33bool g(UP& p)
34{
35  auto binder = std::bind(f, std::ref(p), std::placeholders::_1);
36  bool b1 = binder(std::ref(p));
37  auto binderbinder = std::bind(binder, std::placeholders::_1);
38  bool b2 = binderbinder(std::ref(p));
39  return b1 && b2;
40}
41