1 // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s 2 // expected-no-diagnostics 3 4 template<typename T> struct identity; 5 template<typename ...Types> struct tuple; 6 7 template<typename T, typename U> struct is_same { 8 static const bool value = false; 9 }; 10 11 template<typename T> struct is_same<T, T> { 12 static const bool value = true; 13 }; 14 15 // There is a syntactic ambiguity when an ellipsis occurs at the end 16 // of a parameter-declaration-clause without a preceding comma. In 17 // this case, the ellipsis is parsed as part of the 18 // abstract-declarator if the type of the parameter names a template 19 // parameter pack that has not been expanded; otherwise, it is parsed 20 // as part of the parameter-declaration-clause. 21 22 template<typename T, typename ...Types> 23 struct X0 { 24 typedef identity<T(Types...)> function_pack_1; 25 typedef identity<T(Types......)> variadic_function_pack_1; 26 typedef identity<T(T...)> variadic_1; 27 typedef tuple<T(Types, ...)...> template_arg_expansion_1; 28 }; 29 30 31 32 // FIXME: Once function parameter packs are implemented, we can test all of the disambiguation 33