cxx/test/utilities/memory/allocator.traits/rebind_traits.pass.cpp
Howard Hinnant bc8d3f97eb libcxx initial import
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103490 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-11 19:42:16 +00:00

1 line
2.7 KiB
C++

//===----------------------------------------------------------------------===//
//
// ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊThe LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. 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
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
}