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 // <string>
11 
12 // template<> struct char_traits<char16_t>
13 
14 // static constexpr int_type to_int_type(char_type c);
15 
16 #include <string>
17 #include <cassert>
18 
19 int main()
20 {
21 #ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
22     assert(std::char_traits<char16_t>::to_int_type(u'a') == u'a');
23     assert(std::char_traits<char16_t>::to_int_type(u'A') == u'A');
24     assert(std::char_traits<char16_t>::to_int_type(0) == 0);
25 #endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
26 }
27