58 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// UNSUPPORTED: c++03, c++11, c++14, c++1710 11// XFAIL: libcpp-has-no-experimental-tzdb12 13// <chrono>14 15// struct local_info {16// static constexpr int unique = 0;17// static constexpr int nonexistent = 1;18// static constexpr int ambiguous = 2;19//20// int result;21// sys_info first;22// sys_info second;23// };24 25// Validates whether:26// - The static members are present as static constexpr members.27// - The members are present as non-const members.28// - The struct is an aggregate.29 30#include <chrono>31#include <string>32#include <type_traits>33 34int main(int, char**) {35 {36 constexpr const int& result = std::chrono::local_info::unique;37 static_assert(result == 0);38 }39 {40 constexpr const int& result = std::chrono::local_info::nonexistent;41 static_assert(result == 1);42 }43 {44 constexpr const int& result = std::chrono::local_info::ambiguous;45 static_assert(result == 2);46 }47 48 static_assert(std::is_aggregate_v<std::chrono::local_info>);49 50 std::chrono::local_info local_info{.result = 0, .first = std::chrono::sys_info{}, .second = std::chrono::sys_info{}};51 52 [[maybe_unused]] int& result = local_info.result;53 [[maybe_unused]] std::chrono::sys_info& first = local_info.first;54 [[maybe_unused]] std::chrono::sys_info& second = local_info.second;55 56 return 0;57}58