| 1 | // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s |
|---|
| 2 | |
|---|
| 3 | template<typename T> struct identity; |
|---|
| 4 | template<typename ...Types> struct tuple; |
|---|
| 5 | |
|---|
| 6 | template<typename T, typename U> struct is_same { |
|---|
| 7 | static const bool value = false; |
|---|
| 8 | }; |
|---|
| 9 | |
|---|
| 10 | template<typename T> struct is_same<T, T> { |
|---|
| 11 | static const bool value = true; |
|---|
| 12 | }; |
|---|
| 13 | |
|---|
| 14 | // There is a syntactic ambiguity when an ellipsis occurs at the end |
|---|
| 15 | // of a parameter-declaration-clause without a preceding comma. In |
|---|
| 16 | // this case, the ellipsis is parsed as part of the |
|---|
| 17 | // abstract-declarator if the type of the parameter names a template |
|---|
| 18 | // parameter pack that has not been expanded; otherwise, it is parsed |
|---|
| 19 | // as part of the parameter-declaration-clause. |
|---|
| 20 | |
|---|
| 21 | template<typename T, typename ...Types> |
|---|
| 22 | struct X0 { |
|---|
| 23 | typedef identity<T(Types...)> function_pack_1; |
|---|
| 24 | typedef identity<T(Types......)> variadic_function_pack_1; // expected-warning {{varargs}} expected-note {{pack}} expected-note {{insert ','}} |
|---|
| 25 | typedef identity<T(T...)> variadic_1; |
|---|
| 26 | typedef tuple<T(Types, ...)...> template_arg_expansion_1; |
|---|
| 27 | }; |
|---|
| 28 | |
|---|
| 29 | |
|---|
| 30 | |
|---|
| 31 | // FIXME: Once function parameter packs are implemented, we can test all of the disambiguation |
|---|
| 32 | |
|---|