libstdc++-v3/testsuite/21_strings/basic_string/literals/types-char8_t.cc

   1 // { dg-do compile { target c++14 } }
   2 // { dg-options "-fchar8_t" }
   3
   4 // Copyright (C) 2013-2017 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <string>
  22 #include <type_traits>
  23
  24 void
  25 test01()
  26 {
  27   using namespace std::literals::string_literals;
  28
  29   static_assert(std::is_same<decltype("Hello"s), std::string>::value,
  30                 "\"Hello\"s is std::string");
  31
  32 #ifdef _GLIBCXX_USE_CHAR8_T
  33   static_assert(std::is_same<decltype(u8"Hello"s), std::u8string>::value,
  34                 "u8\"Hello\"s is std::u8string");
  35 #else
  36   static_assert(std::is_same<decltype(u8"Hello"s), std::string>::value,
  37                 "u8\"Hello\"s is std::string");
  38 #endif
  39
  40
  41 #ifdef _GLIBCXX_USE_WCHAR_T
  42   static_assert(std::is_same<decltype(L"Hello"s), std::wstring>::value,
  43                 "L\"Hello\"s is std::wstring");
  44 #endif
  45
  46   static_assert(std::is_same<decltype(u"Hello"s), std::u16string>::value,
  47                 "u\"Hello\"s is std::u16string");
  48
  49   static_assert(std::is_same<decltype(U"Hello"s), std::u32string>::value,
  50                 "U\"Hello\"s is std::u32string");
  51 }