18 lines · cpp
1// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s2 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