libstdc++-v3/testsuite/22_locale/codecvt/codecvt_utf8/requirements/1.cc

   1 // Copyright (C) 2015-2020 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-do compile { target c++11 } }
  19
  20 #include <codecvt>
  21 #include <type_traits>
  22
  23 template<typename C>
  24   using codecvt = std::codecvt<C, char, std::mbstate_t>;
  25
  26 using std::is_base_of;
  27
  28 static_assert(
  29     is_base_of<codecvt<char16_t>, std::codecvt_utf8<char16_t>>::value,
  30     "codecvt_utf8<char16_t> has wrong base class");
  31
  32 static_assert(
  33     is_base_of<codecvt<char32_t>, std::codecvt_utf8<char32_t>>::value,
  34     "codecvt_utf8<char32_t> has wrong base class");