From: Steve Klabnik Date: 2011-04-20T00:07:08+09:00 Subject: Re: Tail Call Optimization (Tail Recursion) --0015174734307b4cb504a146dcb9 Content-Type: text/plain; charset=ISO-8859-1 There are techniques to retain a backtrace, even with TCO. --0015174734307b4cb504a146dcb9--