| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // UNSUPPORTED: c++03, c++11, c++14 |
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| 10 | |
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| 11 | // <variant> |
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| 12 | |
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| 13 | // template <size_t I, class T> struct variant_alternative; // undefined |
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| 14 | // template <size_t I, class T> struct variant_alternative<I, const T>; |
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| 15 | // template <size_t I, class T> struct variant_alternative<I, volatile T>; |
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| 16 | // template <size_t I, class T> struct variant_alternative<I, const volatile T>; |
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| 17 | // template <size_t I, class T> |
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| 18 | // using variant_alternative_t = typename variant_alternative<I, T>::type; |
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| 19 | // |
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| 20 | // template <size_t I, class... Types> |
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| 21 | // struct variant_alternative<I, variant<Types...>>; |
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| 22 | |
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| 23 | #include <memory> |
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| 24 | #include <type_traits> |
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| 25 | #include <variant> |
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| 26 | |
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| 27 | int main(int, char**) { |
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| 28 | using V = std::variant<int, void *, const void *, long double>; |
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| 29 | std::variant_alternative<4, V>::type foo; // expected-error@variant:* {{Index out of bounds in std::variant_alternative<>}} |
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| 30 | |
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| 31 | return 0; |
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| 32 | } |
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| 33 | |
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