| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <memory> |
| |
| // template <class Alloc> |
| // struct allocator_traits |
| // { |
| // typedef Alloc::const_void_pointer |
| // | pointer_traits<pointer>::rebind<const void> |
| // const_void_pointer; |
| // ... |
| // }; |
| |
| #include <memory> |
| #include <type_traits> |
| |
| template <class T> |
| struct Ptr {}; |
| |
| template <class T> |
| struct A |
| { |
| typedef T value_type; |
| typedef Ptr<T> pointer; |
| }; |
| |
| template <class T> |
| struct B |
| { |
| typedef T value_type; |
| }; |
| |
| template <class T> |
| struct CPtr {}; |
| |
| template <class T> |
| struct C |
| { |
| typedef T value_type; |
| typedef CPtr<const void> const_void_pointer; |
| }; |
| |
| int main() |
| { |
| static_assert((std::is_same<std::allocator_traits<A<char> >::const_void_pointer, Ptr<const void> >::value), ""); |
| static_assert((std::is_same<std::allocator_traits<B<char> >::const_void_pointer, const void*>::value), ""); |
| static_assert((std::is_same<std::allocator_traits<C<char> >::const_void_pointer, CPtr<const void> >::value), ""); |
| } |