The Boost.System library, part of Boost C++ Libraries, implements an extensible framework for error reporting in the form of an error_code class and supporting facilities.

It has been proposed for the C++11 standard, has been accepted, and is now available as part of the standard library in the <system_error> header. However, the Boost implementation has continued to evolve and gain enhancements and additional functionality, such as support for attaching source locations to error_code, and a result<T> class that can carry either a value or an error code.

See the documentation of System for more information.

Since <system_error> is a relatively undocumented portion of the C++ standard library, the documentation of Boost.System may be useful to you even if you use the standard components.

Distributed under the Boost Software License, Version 1.0.