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40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
// { dg-do compile { target c++11 } }
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// Copyright (C) 2014-2020 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// libstdc++/60497
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#include <functional>
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#include <memory>
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struct A;
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template<typename T> struct B { T t; };
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using UP = std::unique_ptr<B<A>>;
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bool f(UP&, UP&) { return true; }
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bool g(UP& p)
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{
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auto binder = std::bind(f, std::ref(p), std::placeholders::_1);
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bool b1 = binder(std::ref(p));
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auto binderbinder = std::bind(binder, std::placeholders::_1);
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bool b2 = binderbinder(std::ref(p));
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return b1 && b2;
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}
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