1 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s 2 3 template <class _Tp, class _Up, bool = false> 4 struct __allocator_traits_rebind 5 { 6 }; 7 8 template <template <class, class...> class _Alloc, class _Tp, class ..._Args, 9 class _Up> 10 struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, false> 11 { 12 typedef _Alloc<_Up, _Args...> type; 13 }; 14 15 template <class Alloc> 16 struct allocator_traits 17 { 18 template <class T> using rebind_alloc = typename __allocator_traits_rebind<Alloc, T>::type; 19 template <class T> using rebind_traits = allocator_traits<rebind_alloc<T>>; 20 }; 21 22 template <class T> 23 struct allocator {}; 24 25 int main() 26 { 27 allocator_traits<allocator<char>>::rebind_alloc<int> a; 28 } 29