b82dcb624e
I made sure they all had some expected-error output in them. Many of these tests would be better implemented as a positive test using SFINAE, but this is beyond the scope of this patch. Differential Revision: https://reviews.llvm.org/D153980
33 lines
1.2 KiB
C++
33 lines
1.2 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14
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// <variant>
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// template <size_t I, class T> struct variant_alternative; // undefined
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// template <size_t I, class T> struct variant_alternative<I, const T>;
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// template <size_t I, class T> struct variant_alternative<I, volatile T>;
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// template <size_t I, class T> struct variant_alternative<I, const volatile T>;
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// template <size_t I, class T>
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// using variant_alternative_t = typename variant_alternative<I, T>::type;
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//
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// template <size_t I, class... Types>
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// struct variant_alternative<I, variant<Types...>>;
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#include <memory>
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#include <type_traits>
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#include <variant>
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int main(int, char**) {
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using V = std::variant<int, void *, const void *, long double>;
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std::variant_alternative<4, V>::type foo; // expected-error@variant:* {{Index out of bounds in std::variant_alternative<>}}
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return 0;
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}
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