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// Copyright 2022 Peter Dimov.
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/type_traits/integral_constant.hpp>
struct X1
{
char const* begin() const;
char const* end() const;
};
struct X2
{
char const* begin() const;
char const* end() const;
};
namespace boost
{
namespace container_hash
{
template<class T> struct is_range;
template<> struct is_range<X2>: boost::false_type {};
} // namespace container_hash
} // namespace boost
#include <boost/container_hash/is_range.hpp>
#include <boost/core/lightweight_test_trait.hpp>
int main()
{
using boost::container_hash::is_range;
#if !defined(BOOST_NO_CXX11_DECLTYPE) && !defined(BOOST_NO_SFINAE_EXPR) && !BOOST_WORKAROUND(BOOST_GCC, < 40700)
BOOST_TEST_TRAIT_TRUE((is_range<X1>));
#endif
BOOST_TEST_TRAIT_FALSE((is_range<X2>));
return boost::report_errors();
}
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