[system.error.syn] (original) (raw)

19 Diagnostics library [diagnostics]

19.5 System error support [syserr]

19.5.2 Header <system_error> synopsis [system.error.syn]

The value of each enum errc enumerator is the same as the value of the macro shown in the above synopsis.

Whether or not the implementation exposes the macros is unspecified.

The is_error_code_enum and is_error_condition_enum templates may be specialized for program-defined types to indicate that such types are eligible for class error_code and class error_condition implicit conversions, respectively.