| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <memory> |
| |
| // template <class Ptr> |
| // struct pointer_traits |
| // { |
| // template <class U> using rebind = <details>; |
| // ... |
| // }; |
| |
| #include <memory> |
| #include <type_traits> |
| |
| #include "test_macros.h" |
| |
| template <class T> |
| struct A |
| { |
| }; |
| |
| template <class T> struct B1 {}; |
| |
| template <class T> |
| struct B |
| { |
| #if TEST_STD_VER >= 11 |
| template <class U> using rebind = B1<U>; |
| #else |
| template <class U> struct rebind {typedef B1<U> other;}; |
| #endif |
| }; |
| |
| template <class T, class U> |
| struct C |
| { |
| }; |
| |
| template <class T, class U> struct D1 {}; |
| |
| template <class T, class U> |
| struct D |
| { |
| #if TEST_STD_VER >= 11 |
| template <class V> using rebind = D1<V, U>; |
| #else |
| template <class V> struct rebind {typedef D1<V, U> other;}; |
| #endif |
| }; |
| |
| template <class T, class U> |
| struct E |
| { |
| template <class> |
| void rebind() {} |
| }; |
| |
| |
| #if TEST_STD_VER >= 11 |
| template <class T, class U> |
| struct F { |
| private: |
| template <class> |
| using rebind = void; |
| }; |
| #endif |
| |
| #if TEST_STD_VER >= 14 |
| template <class T, class U> |
| struct G |
| { |
| template <class> |
| static constexpr int rebind = 42; |
| }; |
| #endif |
| |
| |
| int main(int, char**) |
| { |
| #if TEST_STD_VER >= 11 |
| static_assert((std::is_same<std::pointer_traits<A<int*> >::rebind<double*>, A<double*> >::value), ""); |
| static_assert((std::is_same<std::pointer_traits<B<int> >::rebind<double>, B1<double> >::value), ""); |
| static_assert((std::is_same<std::pointer_traits<C<char, int> >::rebind<double>, C<double, int> >::value), ""); |
| static_assert((std::is_same<std::pointer_traits<D<char, int> >::rebind<double>, D1<double, int> >::value), ""); |
| static_assert((std::is_same<std::pointer_traits<E<char, int> >::rebind<double>, E<double, int> >::value), ""); |
| static_assert((std::is_same<std::pointer_traits<F<char, int> >::rebind<double>, F<double, int> >::value), ""); |
| |
| #if TEST_STD_VER >= 14 |
| static_assert((std::is_same<std::pointer_traits<G<char, int> >::rebind<double>, G<double, int> >::value), ""); |
| #endif |
| #else // TEST_STD_VER < 11 |
| static_assert((std::is_same<std::pointer_traits<A<int*> >::rebind<double*>::other, A<double*> >::value), ""); |
| static_assert((std::is_same<std::pointer_traits<B<int> >::rebind<double>::other, B1<double> >::value), ""); |
| static_assert((std::is_same<std::pointer_traits<C<char, int> >::rebind<double>::other, C<double, int> >::value), ""); |
| static_assert((std::is_same<std::pointer_traits<D<char, int> >::rebind<double>::other, D1<double, int> >::value), ""); |
| static_assert((std::is_same<std::pointer_traits<E<char, int> >::rebind<double>::other, E<double, int> >::value), ""); |
| #endif |
| |
| return 0; |
| } |