Boost Exception

errinfo_api_function

#include <boost/exception/errinfo_api_function.hpp>

#include <boost/exception/error_info.hpp>

namespace
boost
    {
    typedef error_info<struct errinfo_api_function_,int> errinfo_api_function;
    }

This type is designed to be used as a standard error_info instance for transporting the name of a relevant API function (which does not use exceptions to report errors) in exceptions deriving from boost::exception.