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libcxx_old/test/std/utilities/variant/variant.monostate/monostate.pass.cpp

32 lines
906 B
C++

// -*- 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>
// struct monostate {};
#include <type_traits>
#include <variant>
#include "test_macros.h"
int main(int, char**) {
using M = std::monostate;
static_assert(std::is_trivially_default_constructible<M>::value, "");
static_assert(std::is_trivially_copy_constructible<M>::value, "");
static_assert(std::is_trivially_copy_assignable<M>::value, "");
static_assert(std::is_trivially_destructible<M>::value, "");
constexpr M m{};
((void)m);
return 0;
}