Will it be consider as 'false positive'?

The verdict: 

This may allow to execute arbitrary code, or at least modify what code can be executed.

(Snippet from system/core/Loader.php)

Code:

// If the PHP installation does not support short tags we'll

 // do a little string replacement, changing the short tags

 // to standard PHP echo statements.

 if ( ! is_php('5.4') && ! ini_get('short_open_tag') && config_item('rewrite_short_tags') === TRUE)

 {
    

  echo eval('?>'.preg_replace('/;*\s*\?>/', '; ?>', str_replace('<?=', '<?php echo ', file_get_contents($_ci_path))));

 }

   any opinion? OR someone can prove they can do some harm by these line?