1// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
2
3namespace Old {
4  template<template<class> class TT> struct X { };
5  template<class> struct Y { };
6  template<class T> using Z = Y<T>;
7  X<Y> y;
8  X<Z> z;
9
10  using SameType = decltype(y); // expected-note {{here}}
11  using SameType = decltype(z); // expected-error {{different types}}
12}
13
14namespace New {
15  template<class T> struct X { };
16  template<class> struct Y { };
17  template<class T> using Z = Y<T>;
18  X<Y<int>> y;
19  X<Z<int>> z;
20
21  using SameType = decltype(y);
22  using SameType = decltype(z); // ok
23}
24