test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/types.pass.cpp

   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 // UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
  10
  11 // <string>
  12
  13 // template<> struct char_traits<char8_t>
  14
  15 // typedef char8_t       char_type;
  16 // typedef unsigned int   int_type;
  17 // typedef streamoff      off_type;
  18 // typedef u16streampos   pos_type;
  19 // typedef mbstate_t      state_type;
  20
  21 #include <string>
  22 #include <type_traits>
  23 #include <cstdint>
  24
  25 int main()
  26 {
  27 #if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L
  28     static_assert((std::is_same<std::char_traits<char8_t>::char_type,  char8_t>::value), "");
  29     static_assert((std::is_same<std::char_traits<char8_t>::int_type,   unsigned int>::value), "");
  30     static_assert((std::is_same<std::char_traits<char8_t>::off_type,   std::streamoff>::value), "");
  31     static_assert((std::is_same<std::char_traits<char8_t>::pos_type,   std::u16streampos>::value), "");
  32     static_assert((std::is_same<std::char_traits<char8_t>::state_type, std::mbstate_t>::value), "");
  33 #endif
  34 }