// { dg-options "-std=gnu++17" } // { dg-do compile } // Copyright (C) 2013-2020 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING3. If not see // . #include #include namespace __gnu_test { template struct traits> : public traits_base { typedef std::true_type is_container; typedef std::true_type is_reversible; }; } #include // Check container for required typedefs. __gnu_test::basic_types t1b; __gnu_test::reversible_types t1r; typedef typename std::string_view::traits_type traits_type1; #ifdef _GLIBCXX_USE_WCHAR_T __gnu_test::basic_types t2b; __gnu_test::reversible_types t2r; typedef typename std::wstring_view::traits_type traits_type2; #endif