d4b59a05fc
Even if these comments have a benefit in .h files (for editors that care about language but can't be configured to treat .h as C++ code), they certainly have no benefit for files with the .cpp extension. Discussed in D110794.
39 lines
1.0 KiB
C++
39 lines
1.0 KiB
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++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;
|
|
}
|