1 // { dg-do compile { target c++11 } }
2 
3 // Copyright (C) 2014-2018 Free Software Foundation, Inc.
4 //
5 // This file is part of the GNU ISO C++ Library.  This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
9 // any later version.
10 
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 // GNU General Public License for more details.
15 
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING3.  If not see
18 // <http://www.gnu.org/licenses/>.
19 
20 // libstdc++/60497
21 
22 #include <functional>
23 #include <memory>
24 
25 struct A;
26 template<typename T> struct B { T t; };
27 
28 using UP = std::unique_ptr<B<A>>;
29 
f(UP &,UP &)30 bool f(UP&, UP&) { return true; }
31 
g(UP & p)32 bool g(UP& p)
33 {
34   auto binder = std::bind(f, std::ref(p), std::placeholders::_1);
35   bool b1 = binder(std::ref(p));
36   auto binderbinder = std::bind(binder, std::placeholders::_1);
37   bool b2 = binderbinder(std::ref(p));
38   return b1 && b2;
39 }
40