p3.cpp revision 226399ce18cdcbb1e83af7c5e644bdabb9d4f2f8 
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).
4template<class T> struct A;
5template<class T> using B = typename A<T>::U; // expected-error {{no type named 'U' in 'A<T>'}}
6template<class T> struct A {
7  typedef B<T> U; // expected-note {{in instantiation of template type alias 'B' requested here}}
8};
9B<short> b;
10
11template<typename T> using U = int;
12
13template<typename ...T> void f(U<T> ...xs);
14void g() { f<void,void,void>(1, 2, 3); }
15
16// FIXME: This is illegal, but probably only because CWG1044 missed this paragraph.
17template<typename T> using U = U<T>;
18