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 &)30bool f(UP&, UP&) { return true; } 31 g(UP & p)32bool 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