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//===----------------------------------------------------------------------===//
//
// 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
// {
// template <class T> using rebind_traits = allocator_traits<rebind_alloc<T>>;
// ...
// };
#include <memory>
#include <type_traits>
template <class T>
struct ReboundA {};
template <class T>
struct A
{
typedef T value_type;
template <class U> struct rebind {typedef ReboundA<U> other;};
};
template <class T, class U>
struct ReboundB {};
template <class T, class U>
struct B
{
typedef T value_type;
template <class V> struct rebind {typedef ReboundB<V, U> other;};
};
template <class T>
struct C
{
typedef T value_type;
};
template <class T, class U>
struct D
{
typedef T value_type;
};
template <class T>
struct E
{
typedef T value_type;
template <class U> struct rebind {typedef ReboundA<U> otter;};
};
int main()
{
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
static_assert((std::is_same<std::allocator_traits<A<char> >::rebind_traits<double>, std::allocator_traits<ReboundA<double> > >::value), "");
static_assert((std::is_same<std::allocator_traits<B<int, char> >::rebind_traits<double>, std::allocator_traits<ReboundB<double, char> > >::value), "");
static_assert((std::is_same<std::allocator_traits<C<char> >::rebind_traits<double>, std::allocator_traits<C<double> > >::value), "");
static_assert((std::is_same<std::allocator_traits<D<int, char> >::rebind_traits<double>, std::allocator_traits<D<double, char> > >::value), "");
static_assert((std::is_same<std::allocator_traits<E<char> >::rebind_traits<double>, std::allocator_traits<E<double> > >::value), "");
#else // _LIBCPP_HAS_NO_TEMPLATE_ALIASES
static_assert((std::is_same<std::allocator_traits<A<char> >::rebind_traits<double>::other, std::allocator_traits<ReboundA<double> > >::value), "");
static_assert((std::is_same<std::allocator_traits<B<int, char> >::rebind_traits<double>::other, std::allocator_traits<ReboundB<double, char> > >::value), "");
static_assert((std::is_same<std::allocator_traits<C<char> >::rebind_traits<double>::other, std::allocator_traits<C<double> > >::value), "");
static_assert((std::is_same<std::allocator_traits<D<int, char> >::rebind_traits<double>::other, std::allocator_traits<D<double, char> > >::value), "");
static_assert((std::is_same<std::allocator_traits<E<char> >::rebind_traits<double>::other, std::allocator_traits<E<double> > >::value), "");
#endif // _LIBCPP_HAS_NO_TEMPLATE_ALIASES
}
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