1 // RUN: %clang_cc1 -std=c++11 -verify %s 2 3 struct Q { typedef int type; }; 4 5 // "The substitution occurs in all types and expressions that are used in [...] 6 // template parameter declarations." In particular, we must substitute into the 7 // type of a parameter pack that is not a pack expansion, even if we know the 8 // corresponding argument pack is empty. 9 template<typename T, typename T::type...> void a(T); 10 int &a(...); 11 int &a_disabled = a(0); 12 int &a_enabled = a(Q()); // expected-error {{cannot bind to a temporary of type 'void'}} 13 14 template<typename T, template<typename T::type> class ...X> void b(T); 15 int &b(...); 16 int &b_disabled = b(0); 17 int &b_enabled = b(Q()); // expected-error {{cannot bind to a temporary of type 'void'}} 18 19 template<typename T, template<typename T::type...> class ...X> void c(T); 20 int &c(...); 21 int &c_disabled = c(0); 22 int &c_enabled = c(Q()); // expected-error {{cannot bind to a temporary of type 'void'}} 23
