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-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // UNSUPPORTED: c++03, c++11, c++14, c++17 10 11 // XFAIL: libcpp-has-no-experimental-tzdb 12 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 main(int,const char **)34int main(int, const 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