projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| a945c346 | 1 | // Copyright (C) 2019-2024 Free Software Foundation, Inc. |
| cff87282 JW |
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 | ||
| b9a2dce8 | 18 | // { dg-do compile { target c++20 } } |
| cff87282 JW |
19 | |
| 20 | #include <span> | |
| 21 | ||
| 22 | using std::span; | |
| 23 | using std::is_nothrow_constructible_v; | |
| 24 | ||
| 25 | static_assert( is_nothrow_constructible_v<span<int>> ); | |
| 26 | static_assert( is_nothrow_constructible_v<span<int, 0>> ); | |
| 27 | ||
| 28 | static_assert( is_nothrow_constructible_v<span<int>, span<int>&> ); | |
| 29 | static_assert( is_nothrow_constructible_v<span<const int>, span<int>&> ); | |
| 30 | static_assert( is_nothrow_constructible_v<span<int>, span<int, 1>&> ); | |
| 31 | static_assert( is_nothrow_constructible_v<span<const int>, span<int, 1>&> ); | |
| 32 | static_assert( is_nothrow_constructible_v<span<int, 1>, span<int, 1>&> ); | |
| 33 | static_assert( is_nothrow_constructible_v<span<const int, 1>, span<int, 1>&> ); | |
| 34 | ||
| 35 | static_assert( is_nothrow_constructible_v<span<int>, int(&)[1]> ); | |
| 36 | static_assert( is_nothrow_constructible_v<span<int, 1>, int(&)[1]> ); | |
| 37 | static_assert( is_nothrow_constructible_v<span<int>, std::array<int, 1>&> ); | |
| 38 | static_assert( is_nothrow_constructible_v<span<int, 1>, std::array<int, 1>&> ); | |
| 39 | ||
| 40 | template<bool> | |
| 41 | struct sentinel { int* p; }; | |
| 42 | ||
| 43 | template<bool B> | |
| 44 | bool operator==(sentinel<B> s, int* p) noexcept { return s.p == p; } | |
| 45 | ||
| 46 | template<bool B> | |
| 47 | std::ptrdiff_t operator-(sentinel<B> s, int* p) noexcept(B) { return s.p - p; } | |
| 48 | ||
| 49 | template<bool B> | |
| 50 | std::ptrdiff_t operator-(int* p, sentinel<B> s) noexcept { return p - s.p; } | |
| 51 | ||
| 52 | static_assert(std::sized_sentinel_for<sentinel<true>, int*>); | |
| 53 | static_assert(std::sized_sentinel_for<sentinel<false>, int*>); | |
| 54 | ||
| 55 | static_assert(is_nothrow_constructible_v<span<int>, int*, std::size_t>); | |
| 56 | static_assert(is_nothrow_constructible_v<span<int>, int*, const int*>); | |
| 57 | static_assert(is_nothrow_constructible_v<span<int>, int*, sentinel<true>>); | |
| 58 | static_assert(!is_nothrow_constructible_v<span<int>, int*, sentinel<false>>); |