I'd vote getting to use RAII is a better win than TCO. And really its by definition not a tail call when you have to run destructors after a "tail" call, and t

I'd vote getting to use RAII is a better win than TCO. And really its by definition not a tail call when you have to run destructors after a "tail" call, and tricky/annoying to express that destructors should be run prior to a tail call.