Mercurial > hg > CbC > CbC_gcc
view libstdc++-v3/testsuite/21_strings/basic_string_view/operations/copy/char/constexpr.cc @ 152:2b5abeee2509
update gcc11
author | anatofuz |
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date | Mon, 25 May 2020 07:50:57 +0900 |
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// Copyright (C) 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 // <http://www.gnu.org/licenses/>. // { dg-options "-std=gnu++2a" } // { dg-do compile { target c++2a } } #include <string_view> #ifndef __cpp_lib_constexpr_string_view # error "Feature test macro for constexpr copy is missing in <string_view>" #elif __cpp_lib_constexpr_iterator < 201811L # error "Feature test macro for constexpr copy has wrong value in <string_view>" #endif constexpr bool test01() { std::string_view s = "Everything changes and nothing stands still."; char buf[7]{}; auto n = s.copy(buf, 7, 11); return std::string_view(buf, n) == "changes"; } static_assert( test01() );