49 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++1410 11// <filesystem>12 13// enum class perm_options;14 15#include <filesystem>16#include <type_traits>17#include <cassert>18 19#include "test_macros.h"20#include "check_bitmask_types.h"21namespace fs = std::filesystem;22 23constexpr fs::perm_options ME(int val) {24 return static_cast<fs::perm_options>(val);25}26 27int main(int, char**) {28 typedef fs::perm_options E;29 static_assert(std::is_enum<E>::value, "");30 31 // Check that E is a scoped enum by checking for conversions.32 typedef std::underlying_type<E>::type UT;33 static_assert(!std::is_convertible<E, UT>::value, "");34 35 LIBCPP_STATIC_ASSERT(std::is_same<UT, unsigned char >::value, ""); // Implementation detail36 37 typedef check_bitmask_type<E, E::replace, E::nofollow> BitmaskTester;38 assert(BitmaskTester::check());39 40 static_assert(41 E::replace == ME(1) &&42 E::add == ME(2) &&43 E::remove == ME(4) &&44 E::nofollow == ME(8),45 "Expected enumeration values do not match");46 47 return 0;48}49