| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: c++98, c++03, c++11, c++14 |
| |
| // <variant> |
| |
| // template <size_t I, class T> struct variant_alternative; // undefined |
| // template <size_t I, class T> struct variant_alternative<I, const T>; |
| // template <size_t I, class T> struct variant_alternative<I, volatile T>; |
| // template <size_t I, class T> struct variant_alternative<I, const volatile T>; |
| // template <size_t I, class T> |
| // using variant_alternative_t = typename variant_alternative<I, T>::type; |
| // |
| // template <size_t I, class... Types> |
| // struct variant_alternative<I, variant<Types...>>; |
| |
| #include <memory> |
| #include <type_traits> |
| #include <variant> |
| |
| int main() { |
| using V = std::variant<int, void *, const void *, long double>; |
| std::variant_alternative<4, V>::type foo; // expected-error@variant:* {{Index out of bounds in std::variant_alternative<>}} |
| } |
