...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
#include <boost/shared_ptr.hpp>
namespace
boost
{
template <class ErrorInfo,class E>
shared_ptr<typename ErrorInfo::value_type const> get_error_info( E const & x );
}