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Add array_get_test_cx.cpp

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This commit is contained in:
Peter Dimov
2025-01-25 21:20:12 +02:00
parent b32a6cfcfd
commit 4f2ed73766
3 changed files with 45 additions and 2 deletions
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4
include/boost/array.hpp
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@ -458,13 +458,13 @@ namespace boost {
}
template <size_t Idx, typename T, size_t N>
T &get(boost::array<T,N> &arr) BOOST_NOEXCEPT {
BOOST_CXX14_CONSTEXPR T &get(boost::array<T,N> &arr) BOOST_NOEXCEPT {
BOOST_STATIC_ASSERT_MSG ( Idx < N, "boost::get<>(boost::array &) index out of range" );
return arr[Idx];
}
template <size_t Idx, typename T, size_t N>
const T &get(const boost::array<T,N> &arr) BOOST_NOEXCEPT {
BOOST_CONSTEXPR const T &get(const boost::array<T,N> &arr) BOOST_NOEXCEPT {
BOOST_STATIC_ASSERT_MSG ( Idx < N, "boost::get<>(const boost::array &) index out of range" );
return arr[Idx];
}

1
test/Jamfile.v2
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@ -55,6 +55,7 @@ compile array_data_test_cx.cpp ;
compile array_iterator_test_cx.cpp ;
compile array_size_test_cx.cpp ;
compile array_access_test_cx.cpp ;
compile array_get_test_cx.cpp ;
# C++14 constexpr

42
test/array_get_test_cx.cpp Normal file
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@ -0,0 +1,42 @@
// Copyright 2025 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt)
#include <boost/array.hpp>
#include <boost/config.hpp>
#include <boost/config/pragma_message.hpp>
#include <boost/config/workaround.hpp>
#include <cstddef>
#if defined(BOOST_NO_CXX11_CONSTEXPR)
BOOST_PRAGMA_MESSAGE("Test skipped because BOOST_NO_CXX11_CONSTEXPR is defined")
#elif BOOST_WORKAROUND(BOOST_MSVC, < 1910)
BOOST_PRAGMA_MESSAGE("Test skipped because BOOST_MSVC < 1910")
#elif BOOST_WORKAROUND(BOOST_GCC, < 50000)
BOOST_PRAGMA_MESSAGE("Test skipped because BOOST_GCC < 50000")
#else
#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
template<class T> void test()
{
constexpr boost::array<T, 4> a = {{ 1, 2, 3, 4 }};
STATIC_ASSERT( boost::get<0>( a ) == 1 );
STATIC_ASSERT( boost::get<1>( a ) == 2 );
STATIC_ASSERT( boost::get<2>( a ) == 3 );
STATIC_ASSERT( boost::get<3>( a ) == 4 );
}
int main()
{
test<int>();
}
#endif