1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // UNSUPPORTED: c++98, c++03, c++11 11 12 // <experimental/system_error> 13 14 // template <class T> constexpr bool is_error_code_enum_v; 15 16 #include <experimental/system_error> 17 #include <ios> /* for std::io_errc */ 18 19 namespace ex = std::experimental; 20 main()21int main() { 22 { 23 static_assert(ex::is_error_code_enum_v<std::io_errc>, ""); 24 25 static_assert(ex::is_error_code_enum_v<std::io_errc> == 26 std::is_error_code_enum <std::io_errc>::value, ""); 27 28 static_assert(std::is_same<decltype(ex::is_error_code_enum_v<std::io_errc>), 29 const bool>::value, ""); 30 } 31 { 32 static_assert(!ex::is_error_code_enum_v<int>, ""); 33 34 static_assert(ex::is_error_code_enum_v<int> == 35 std::is_error_code_enum <int>::value, ""); 36 } 37 } 38