| // Copyright (C) 2019 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 |
| // <http://www.gnu.org/licenses/>. |
| |
| // { dg-options "-std=gnu++17" } |
| // { dg-do compile { target c++17 } } |
| |
| #include <string_view> |
| |
| // C++98 21.1 [lib.char.traits] p3 |
| // C++03 21.1 [lib.char.traits] p3 |
| // C++11 21.2 [char.traits] p3 |
| // C++14 21.2 [char.traits] p3 |
| // C++17 24.2 [char.traits] p3 |
| // "Traits::char_type shall be the same as CharT." |
| // C++17 24.4.2 [string.view.template] p1 |
| // "the type traits::char_type shall name the same type as charT" |
| // C++2a 21.2 [char.traits] p3 (post-P1148R0) |
| // "If X::char_type is not the same type as C, the program is ill-formed." |
| |
| std::basic_string_view<char, std::char_traits<char16_t>> s1; // { dg-error "here" } |
| std::basic_string_view<char32_t, std::char_traits<char>> s2; // { dg-error "here" } |
| |
| // { dg-prune-output "static assertion failed" } |
