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55 lines
1.1 KiB
C++
55 lines
1.1 KiB
C++
// Copyright 2025 Peter Dimov
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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#include <boost/array.hpp>
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#include <boost/config.hpp>
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#include <boost/config/pragma_message.hpp>
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#include <boost/config/workaround.hpp>
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#include <cstddef>
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#if defined(BOOST_NO_CXX14_CONSTEXPR)
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BOOST_PRAGMA_MESSAGE("Test skipped because BOOST_NO_CXX14_CONSTEXPR is defined")
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#else
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#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
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template<class T, std::size_t N> constexpr boost::array<T, N> assigned( boost::array<T, N> const& a1 )
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{
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boost::array<T, N> a2 = {};
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a2 = a1;
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return a2;
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}
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template<class T> void test1()
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{
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constexpr boost::array<T, 4> a1 = {{ 1, 2, 3, 4 }};
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constexpr boost::array<T, 4> a2 = assigned( a1 );
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STATIC_ASSERT( a1[0] == a2[0] );
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STATIC_ASSERT( a1[1] == a2[1] );
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STATIC_ASSERT( a1[2] == a2[2] );
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STATIC_ASSERT( a1[3] == a2[3] );
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}
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template<class T> void test2()
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{
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constexpr boost::array<T, 0> a1 = {};
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constexpr boost::array<T, 0> a2 = assigned( a1 );
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(void)a1;
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(void)a2;
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}
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int main()
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{
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test1<int>();
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test2<int>();
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}
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#endif
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