# Boost Exception

### unknown_exception

#include <boost/exception_ptr.hpp>

    namespace
    boost
        {
        class
        unknown_exception:
            public std::exception
            public boost::exception
            {
            ---unspecified---
            };
        }

This type is used by the exception_ptr support in Boost Exception. Please see current_exception.

### See Also:

Boost Exception
boost/exception_ptr.hpp
current_exception
enable_current_exception