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 // <system_error> 11 12 // class error_code 13 14 // template <ErrorCodeEnum E> error_code(E e); 15 16 #include <system_error> 17 #include <cassert> 18 19 enum testing 20 { 21 zero, one, two 22 }; 23 24 namespace std 25 { 26 27 template <> struct is_error_code_enum<testing> : public std::true_type {}; 28 29 } 30 31 std::error_code 32 make_error_code(testing x) 33 { 34 return std::error_code(static_cast<int>(x), std::generic_category()); 35 } 36 37 int main() 38 { 39 { 40 std::error_code ec(two); 41 assert(ec.value() == 2); 42 assert(ec.category() == std::generic_category()); 43 } 44 } 45
