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 19namespace ex = std::experimental; 20 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