projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| eb11134d PK |
1 | // { dg-options "-std=gnu++2a" } |
| 2 | // { dg-do compile { target c++2a } } | |
| 3 | ||
| 99dee823 | 4 | // Copyright (C) 2017-2021 Free Software Foundation, Inc. |
| eb11134d PK |
5 | // |
| 6 | // This file is part of the GNU ISO C++ Library. This library is free | |
| 7 | // software; you can redistribute it and/or modify it under the | |
| 8 | // terms of the GNU General Public License as published by the | |
| 9 | // Free Software Foundation; either version 3, or (at your option) | |
| 10 | // any later version. | |
| 11 | ||
| 12 | // This library is distributed in the hope that it will be useful, | |
| 13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | // GNU General Public License for more details. | |
| 16 | ||
| 17 | // You should have received a copy of the GNU General Public License along | |
| 18 | // with this library; see the file COPYING3. If not see | |
| 19 | // <http://www.gnu.org/licenses/>. | |
| 20 | ||
| 21 | #include <string> | |
| 22 | ||
| 23 | template<typename CT> | |
| 24 | constexpr bool | |
| 25 | test_move() | |
| 26 | { | |
| 27 | using char_type = typename CT::char_type; | |
| 28 | char_type s1[3] = {1, 2, 3}; | |
| 29 | CT::move(s1+1, s1, 2); | |
| 30 | return s1[0]==char_type{1} && s1[1]==char_type{1} && s1[2]==char_type{2}; | |
| 31 | } | |
| 32 | ||
| 3da80ed7 JW |
33 | #ifndef __cpp_lib_constexpr_string |
| 34 | # error Feature-test macro for constexpr char_traits is missing | |
| 35 | #elif __cpp_lib_constexpr_string < 201811 | |
| 36 | # error Feature-test macro for constexpr char_traits has the wrong value | |
| 37 | #endif | |
| 38 | ||
| 39 | // We also provide this non-standard macro for P0426R1 and P1032R1. | |
| eb11134d PK |
40 | #ifndef __cpp_lib_constexpr_char_traits |
| 41 | # error Feature-test macro for constexpr char_traits is missing | |
| b6ab9ecd | 42 | #elif __cpp_lib_constexpr_char_traits != 201811 |
| eb11134d PK |
43 | # error Feature-test macro for constexpr char_traits has the wrong value |
| 44 | #endif | |
| 45 | ||
| 46 | static_assert( test_move<std::char_traits<char>>() ); | |
| eb11134d | 47 | static_assert( test_move<std::char_traits<wchar_t>>() ); |
| eb11134d PK |
48 | #ifdef _GLIBCXX_USE_CHAR8_T |
| 49 | static_assert( test_move<std::char_traits<char8_t>>() ); | |
| 50 | #endif | |
| 51 | static_assert( test_move<std::char_traits<char16_t>>() ); | |
| 52 | static_assert( test_move<std::char_traits<char32_t>>() ); | |
| 53 | ||
| 54 | struct C { unsigned char c; }; | |
| 55 | constexpr bool operator==(const C& c1, const C& c2) { return c1.c == c2.c; } | |
| 56 | constexpr bool operator<(const C& c1, const C& c2) { return c1.c < c2.c; } | |
| 57 | static_assert( test_move<std::char_traits<C>>() ); |