| 1 | //===----------------------------------------------------------------------===// |
|---|
| 2 | // |
|---|
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
|---|
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
|---|
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
|---|
| 6 | // |
|---|
| 7 | //===----------------------------------------------------------------------===// |
|---|
| 8 | |
|---|
| 9 | // UNSUPPORTED: c++03, c++11, c++14, c++17 |
|---|
| 10 | |
|---|
| 11 | #include <iterator> |
|---|
| 12 | |
|---|
| 13 | #include "test_iterators.h" |
|---|
| 14 | |
|---|
| 15 | using sized_it = random_access_iterator<int*>; |
|---|
| 16 | static_assert(std::sized_sentinel_for<sized_it, sized_it>); |
|---|
| 17 | static_assert(std::sized_sentinel_for<std::move_iterator<sized_it>, std::move_iterator<sized_it>>); |
|---|
| 18 | |
|---|
| 19 | struct unsized_it { |
|---|
| 20 | using value_type = int; |
|---|
| 21 | using difference_type = std::ptrdiff_t; |
|---|
| 22 | |
|---|
| 23 | value_type& operator*() const; |
|---|
| 24 | bool operator==(const unsized_it&) const; |
|---|
| 25 | difference_type operator-(const unsized_it&) const { return 0; } |
|---|
| 26 | }; |
|---|
| 27 | |
|---|
| 28 | template <> |
|---|
| 29 | inline constexpr bool std::disable_sized_sentinel_for<unsized_it, unsized_it> = true; |
|---|
| 30 | |
|---|
| 31 | static_assert(!std::sized_sentinel_for<unsized_it, unsized_it>); |
|---|
| 32 | static_assert(!std::sized_sentinel_for<std::move_iterator<unsized_it>, std::move_iterator<unsized_it>>); |
|---|
| 33 | |
|---|
