// Copyright 2025 Peter Dimov

// Distributed under the Boost Software License, Version 1.0.

// https://www.boost.org/LICENSE_1_0.txt

#define BOOST_ALLOW_DEPRECATED_SYMBOLS

#include <boost/array.hpp>

#include <boost/core/lightweight_test.hpp>

#include <boost/config.hpp>

#include <boost/config/workaround.hpp>

#include <cstddef>

// c_array and get_c_array are deprecated nonstandard extensions

template<class T, std::size_t N> void test()

{

boost::array<T, N> a = {};

T* p1 = a.c_array();

T* p2 = a.data();

BOOST_TEST_EQ( p1, p2 );

}

template<class T, std::size_t N> void test2()

{

{

boost::array<T, N> a = {{}};

T (&e1)[ N ] = boost::get_c_array( a );

T (&e2)[ N ] = a.elems;

BOOST_TEST_EQ( static_cast<T*>( e1 ), static_cast<T*>( e2 ) );

}

{

boost::array<T, N> const a = {{}};

T const (&e1)[ N ] = boost::get_c_array( a );

T const (&e2)[ N ] = a.elems;

BOOST_TEST_EQ( static_cast<T const*>( e1 ), static_cast<T const*>( e2 ) );

}

}

int main()

{

test<int, 0>();

test<int, 1>();

test<int, 7>();

test<int const, 0>();

#if BOOST_WORKAROUND(BOOST_MSVC, < 1910) || BOOST_WORKAROUND(BOOST_GCC, < 50000)

// = {} doesn't work for const T

#else

test<int const, 1>();

test<int const, 7>();

#endif

test2<int, 1>();

test2<int, 7>();

test2<int const, 1>();

test2<int const, 7>();

return boost::report_errors();

}