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 10 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" 21 namespace fs = std::filesystem; 22 23 constexpr fs::perm_options ME(int val) { 24 return static_cast<fs::perm_options>(val); 25 } 26 27 int 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_ONLY(static_assert(std::is_same<UT, unsigned char >::value, "")); // Implementation detail 36 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