Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

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Boost Exception

get_error_info

#include <boost/exception/get_error_info.hpp>

namespace
boost
    {
    template <class ErrorInfo,class E>
    shared_ptr<typename ErrorInfo::value_type const> get_error_info( E const & x );
    }

Requirements:

  • ErrorInfo must be an instance of the error_info template.
  • E must be polymorphic.
  • The get_error_info function must not be called outside of a catch block.

Returns:

  • If dynamic_cast<boost::exception const *>(&x) is 0, or if x does not store an object of type ErrorInfo, the returned value is an empty shared_ptr.
  • Otherwise, the returned shared_ptr points to the stored value (use operator<< to store values in exception objects.) The shared_ptr is valid even after x has been destroyed.

Throws:

Nothing.

Note:

The interface of get_error_info may be affected by the build configuration macros.

See Also:

BOOST_THROW_EXCEPTION
Boost Exception
boost/exception/get_error_info.hpp
Configuration Macros
error_info
exception