70 lines
2.7 KiB
C++
70 lines
2.7 KiB
C++
// Copyright (C) 2019-2021 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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// { dg-options "-std=gnu++2a" }
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// { dg-do compile { target c++2a } }
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#include <atomic>
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void
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test01()
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{
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using A = std::atomic<float>;
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static_assert( std::is_standard_layout_v<A> );
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static_assert( !std::is_trivially_default_constructible_v<A> );
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static_assert( std::is_trivially_destructible_v<A> );
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static_assert( std::is_same_v<A::value_type, float> );
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static_assert( std::is_same_v<A::difference_type, A::value_type> );
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static_assert( !std::is_copy_constructible_v<A> );
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static_assert( !std::is_move_constructible_v<A> );
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static_assert( !std::is_copy_assignable_v<A> );
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static_assert( !std::is_move_assignable_v<A> );
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static_assert( !std::is_assignable_v<volatile A&, const A&> );
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}
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void
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test02()
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{
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using A = std::atomic<double>;
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static_assert( std::is_standard_layout_v<A> );
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static_assert( !std::is_trivially_default_constructible_v<A> );
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static_assert( std::is_trivially_destructible_v<A> );
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static_assert( std::is_same_v<A::value_type, double> );
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static_assert( std::is_same_v<A::difference_type, A::value_type> );
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static_assert( !std::is_copy_constructible_v<A> );
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static_assert( !std::is_move_constructible_v<A> );
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static_assert( !std::is_copy_assignable_v<A> );
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static_assert( !std::is_move_assignable_v<A> );
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static_assert( !std::is_assignable_v<volatile A&, const A&> );
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}
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void
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test03()
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{
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using A = std::atomic<long double>;
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static_assert( std::is_standard_layout_v<A> );
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static_assert( !std::is_trivially_default_constructible_v<A> );
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static_assert( std::is_trivially_destructible_v<A> );
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static_assert( std::is_same_v<A::value_type, long double> );
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static_assert( std::is_same_v<A::difference_type, A::value_type> );
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static_assert( !std::is_copy_constructible_v<A> );
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static_assert( !std::is_move_constructible_v<A> );
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static_assert( !std::is_copy_assignable_v<A> );
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static_assert( !std::is_move_assignable_v<A> );
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static_assert( !std::is_assignable_v<volatile A&, const A&> );
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}
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