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comparison libstdc++-v3/testsuite/21_strings/basic_string_view/operations/copy/char/constexpr.cc @ 152:2b5abeee2509

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update gcc11
author anatofuz
date Mon, 25 May 2020 07:50:57 +0900
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145:1830386684a0 152:2b5abeee2509
1 // Copyright (C) 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-options "-std=gnu++2a" }
19 // { dg-do compile { target c++2a } }
20
21 #include <string_view>
22
23 #ifndef __cpp_lib_constexpr_string_view
24 # error "Feature test macro for constexpr copy is missing in <string_view>"
25 #elif __cpp_lib_constexpr_iterator < 201811L
26 # error "Feature test macro for constexpr copy has wrong value in <string_view>"
27 #endif
28
29 constexpr bool
30 test01()
31 {
32 std::string_view s = "Everything changes and nothing stands still.";
33 char buf[7]{};
34 auto n = s.copy(buf, 7, 11);
35 return std::string_view(buf, n) == "changes";
36 }
37
38 static_assert( test01() );