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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14
// <variant>
// template <class T, class... Types>
// constexpr bool holds_alternative(const variant<Types...>& v) noexcept;
#include "test_macros.h"
#include <variant>
int main(int, char**) {
{
using V = std::variant<int>;
constexpr V v;
static_assert(std::holds_alternative<int>(v), "");
}
{
using V = std::variant<int, long>;
constexpr V v;
static_assert(std::holds_alternative<int>(v), "");
static_assert(!std::holds_alternative<long>(v), "");
}
{ // noexcept test
using V = std::variant<int>;
const V v;
ASSERT_NOEXCEPT(std::holds_alternative<int>(v));
}
return 0;
}
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