std::error_code::clear (3) - Linux Manuals
std::error_code::clear: std::error_code::clear
NAME
std::error_code::clear - std::error_code::clear
Synopsis
void clear() noexcept; (since C++11)
Replaces the error code and error category with default values.
Equivalent to *this = error_code(0, std::system_category()).
Parameters
(none)
Return value
(none)