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// Copyright (C) 2020-2022 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/>.
// { dg-do compile { target c++11 } }
#include <debug/forward_list>
// PR libstdc++/90102
struct AnyCont
{
template<class Cont, class Check = decltype(std::declval<Cont>().clear())>
operator Cont () const;
} a;
// This should use copy constructor, not be ambiguous
__gnu_debug::forward_list<int> c(a);
// Ensure construction from base container still works
__gnu_debug::forward_list<int> d(static_cast<std::forward_list<int>>(a));
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