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      1 // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
      2 
      3 // The example given in the standard (this is rejected for other reasons anyway).
      4 template<class T> struct A;
      5 template<class T> using B = typename A<T>::U; // expected-error {{no type named 'U' in 'A<T>'}}
      6 template<class T> struct A {
      7   typedef B<T> U; // expected-note {{in instantiation of template type alias 'B' requested here}}
      8 };
      9 B<short> b;
     10 
     11 template<typename T> using U = int;
     12 
     13 template<typename ...T> void f(U<T> ...xs);
     14 void g() { f<void,void,void>(1, 2, 3); }
     15 
     16 // FIXME: This is illegal, but probably only because CWG1044 missed this paragraph.
     17 template<typename T> using U = U<T>;
     18