When available, Asio can use the std::error_code
and std::system_error
classes for reporting errors. In this case, the names asio::error_code
and asio::system_error
will be typedefs for these standard
classes.
System error support is automatically enabled for g++
4.6 and later, when the -std=c++0x
or -std=gnu++0x
compiler options are used. It may be disabled by defining ASIO_DISABLE_STD_SYSTEM_ERROR
,
or explicitly enabled for other compilers by defining ASIO_HAS_STD_SYSTEM_ERROR
.