1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <locale>
11 
12 // template <class CharT>
13 // class ctype
14 //     : public locale::facet,
15 //       public ctype_base
16 // {
17 // public:
18 //     typedef CharT char_type;
19 // };
20 
21 #include <locale>
22 #include <type_traits>
23 #include <cassert>
24 
25 int main()
26 {
27     std::locale l = std::locale::classic();
28     {
29         assert(std::has_facet<std::ctype<wchar_t> >(l));
30         const std::ctype<wchar_t>& f = std::use_facet<std::ctype<wchar_t> >(l);
31         {
32             (void)std::ctype<wchar_t>::id;
33         }
34         static_assert((std::is_same<std::ctype<wchar_t>::char_type, wchar_t>::value), "");
35         static_assert((std::is_base_of<std::ctype_base, std::ctype<wchar_t> >::value), "");
36         static_assert((std::is_base_of<std::locale::facet, std::ctype<wchar_t> >::value), "");
37     }
38 }
39