Re: proper tail recursion for gcc

[Michael Livshin]

Richard Stallman <address@hidden> writes:

> Does Scheme require returning multiple values to be done in a way that
> will work with a caller that expects only the first value?

no, the continuation must expect the precise number of values that is
returned.

[ in fact, it seems that the Scheme multiple-value return facility
  tries hard to conceptually unify function calls and value returns,
  i.e. a return is just a call to a continuation. ]

> I don't know, but Common Lisp does require this.  To make multiple value
> returning compatible with an ordinary call probably requires a new
> compiler feature.  At least I don't see a clean way to do that without
> adding a compiler feature.

well, I'm sure CL hackers out there would very much appreciate GCC
taking care of them too ;).

-- 
Let's start preparing for the future.  Now's a good time, since it's
already here.
                -- David L. Andre