*** boost/system/system_error.hpp.org	2012-09-18 13:14:40.716258337 -0400
--- boost/system/system_error.hpp	2012-09-18 13:15:14.808259047 -0400
***************
*** 61,73 ****
--- 61,77 ----
      {
        if ( m_what.empty() )
        {
+ #ifndef BOOST_NO_EXCEPTIONS
          try
+ #endif
          {
            m_what = this->std::runtime_error::what();
            if ( !m_what.empty() ) m_what += ": ";
            m_what += m_error_code.message();
          }
+ #ifndef BOOST_NO_EXCEPTIONS
          catch (...) { return std::runtime_error::what(); }
+ #endif
        }
        return m_what.c_str();
      }