Fri Apr 8 11:02:38 EDT 2005 rsc
    This would have been a lot easier to follow with a 
    better explanation.  reread() doesn't take any arguments
    at all.  The problem is that mapname, which might point at
    an argument or a static string, is assumed to be a 256-byte
    buffer, which it isn't.
    
    Thanks for the patch.