|  | // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s | 
|  | // expected-no-diagnostics | 
|  |  | 
|  | template <class _Tp, class _Up> | 
|  | struct __allocator_traits_rebind | 
|  | { | 
|  | typedef typename _Tp::template rebind<_Up>::other type; | 
|  | }; | 
|  |  | 
|  | template <class Alloc> | 
|  | struct allocator_traits | 
|  | { | 
|  | typedef Alloc allocator_type; | 
|  | template <class T> using rebind_alloc = typename | 
|  | __allocator_traits_rebind<allocator_type, T>::type; | 
|  | template <class T> using rebind_traits = allocator_traits<rebind_alloc<T>>; | 
|  | }; | 
|  |  | 
|  | template <class T> | 
|  | struct ReboundA {}; | 
|  |  | 
|  | template <class T> | 
|  | struct A | 
|  | { | 
|  | typedef T value_type; | 
|  |  | 
|  | template <class U> struct rebind {typedef ReboundA<U> other;}; | 
|  | }; | 
|  |  | 
|  | int main() | 
|  | { | 
|  | allocator_traits<A<char> >::rebind_traits<double> a; | 
|  | } |