function _drupal_exception_handler($exception) {
   require_once DRUPAL_ROOT . '/includes/errors.inc';
   try {
      // display the error message in the log and return the error messages to the user
      _drupal_log_error(_drupal_decode_exception($exception), TRUE);
   }
   catch (Exception $excp2) {
      // Another uncaught exception was thrown while handling the first one.
      // If we are displaying errors, then do so with no possibility of 
         a further uncaught exception being thrown.
         
      if (error_displayable()) {
         print '
Additional uncaught exception thrown while handling exception.
';
         print '
Original
 
'. _drupal_render_exception_safe($exception).'
';
         print '
Additional
 
'. _drupal_render_exception_safe($excp2).'
';
      }
   }
}