Re: [Sbcl-devel] Bug in CLHS regarding multiple-value-call?

[Christophe R. <cs...@ca...>]

Stas Boukarev <sta...@gm...> writes:

> So, it's a bug in SBCL, not CLHS.

I think describing it as a bug in SBCL is too strong.

Programs which exploit this, probably by doing

  (multiple-value-call funvar ...)

where funvar can evaluate to an extended function designator, are
non-portable, and indeed do not work in either the compiler or the sexp
evaluator, as far as I can tell.  What does work is the trivial

  (multiple-value-call '(setf foo) ...)

where I say "trivial" because it can trivially be converted into a
conforming program by adding one # character.

I wouldn't have any objection to forbidding the explicit list
version.  But nor would I have an objection to preserving it, while
adding a STYLE-WARNING when it happens.

Cheers,

Christophe