test/std/localization/locale.categories/category.ctype/facet.ctype.special/types.pass.cpp

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// <locale>

// template <>
// class ctype<char>
//     : public locale::facet,
//       public ctype_base
// {
// public:
//     typedef char char_type;
// };

#include <locale>
#include <type_traits>
#include <cassert>

#include "test_macros.h"

int main(int, char**)
{
    std::locale l = std::locale::classic();
    {
        assert(std::has_facet<std::ctype<char> >(l));
        const std::ctype<char>& f = std::use_facet<std::ctype<char> >(l);
        ((void)f); // Prevent unused warning
        {
            (void)std::ctype<char>::id;
        }
        static_assert((std::is_same<std::ctype<char>::char_type, char>::value), "");
        static_assert((std::is_base_of<std::ctype_base, std::ctype<char> >::value), "");
        static_assert((std::is_base_of<std::locale::facet, std::ctype<char> >::value), "");
    }

  return 0;
}