| 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 | // <iterator> |
| 10 | |
| 11 | // template<class T> |
| 12 | // struct iterator_traits<T*> |
| 13 | // { |
| 14 | // typedef ptrdiff_t difference_type; |
| 15 | // typedef T value_type; |
| 16 | // typedef T* pointer; |
| 17 | // typedef T& reference; |
| 18 | // typedef random_access_iterator_tag iterator_category; |
| 19 | // typedef contiguous_iterator_tag iterator_category; // C++20 |
| 20 | // }; |
| 21 | |
| 22 | #include <iterator> |
| 23 | #include <cstddef> |
| 24 | #include <type_traits> |
| 25 | |
| 26 | #include "test_macros.h" |
| 27 | |
| 28 | struct A {}; |
| 29 | |
| 30 | int main(int, char**) |
| 31 | { |
| 32 | typedef std::iterator_traits<A*> It; |
| 33 | static_assert((std::is_same<It::difference_type, std::ptrdiff_t>::value), "" ); |
| 34 | static_assert((std::is_same<It::value_type, A>::value), "" ); |
| 35 | static_assert((std::is_same<It::pointer, A*>::value), "" ); |
| 36 | static_assert((std::is_same<It::reference, A&>::value), "" ); |
| 37 | static_assert((std::is_same<It::iterator_category, std::random_access_iterator_tag>::value), "" ); |
| 38 | #if TEST_STD_VER > 17 |
| 39 | ASSERT_SAME_TYPE(It::iterator_concept, std::contiguous_iterator_tag); |
| 40 | #endif |
| 41 | return 0; |
| 42 | } |
| 43 | |