38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
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// { dg-do compile }
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// Copyright (C) 2017 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
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// along with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// This file tests explicit instantiation of library containers.
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#include <queue>
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using std::queue;
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template<typename A>
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constexpr bool default_constructible()
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{ return std::is_default_constructible<A>::value; }
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static_assert(default_constructible<queue<int>>(), "queue<int>");
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struct NonDefaultConstructible : std::deque<int> {
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NonDefaultConstructible(int) { }
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};
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static_assert(!default_constructible<queue<int, NonDefaultConstructible>>(),
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"queue<int, NonDefaultConstructible>");
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