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 <type_traits> |
24 | |
25 | #include "test_macros.h" |
26 | |
27 | struct A {}; |
28 | |
29 | int main(int, char**) |
30 | { |
31 | typedef std::iterator_traits<A*> It; |
32 | static_assert((std::is_same<It::difference_type, std::ptrdiff_t>::value), "" ); |
33 | static_assert((std::is_same<It::value_type, A>::value), "" ); |
34 | static_assert((std::is_same<It::pointer, A*>::value), "" ); |
35 | static_assert((std::is_same<It::reference, A&>::value), "" ); |
36 | static_assert((std::is_same<It::iterator_category, std::random_access_iterator_tag>::value), "" ); |
37 | #if TEST_STD_VER > 17 |
38 | ASSERT_SAME_TYPE(It::iterator_concept, std::contiguous_iterator_tag); |
39 | #endif |
40 | return 0; |
41 | } |
42 | |