| // Copyright (C) 2017-2021 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-do compile { target c++17 } } |
| |
| #include <cstddef> |
| |
| #ifndef __cpp_lib_byte |
| # error "Feature-test macro for byte missing" |
| #elif __cpp_lib_byte != 201603 |
| # error "Feature-test macro for byte has wrong value" |
| #endif |
| |
| static_assert( sizeof(std::byte) == sizeof(unsigned char) ); |
| static_assert( alignof(std::byte) == alignof(unsigned char) ); |
| |
| // Use the built-in to avoid depending on <type_traits> |
| __underlying_type(std::byte)* p = (unsigned char*)nullptr; |
