unofficial mirror of bug-guile@gnu.org 
 help / color / mirror / Atom feed
From: ludo@gnu.org (Ludovic Courtès)
To: Andy Wingo <wingo@pobox.com>
Cc: bug-guile <bug-guile@gnu.org>
Subject: Re: peval error
Date: Tue, 13 Sep 2011 19:04:36 +0200	[thread overview]
Message-ID: <87d3f4s7a3.fsf@gnu.org> (raw)
In-Reply-To: <874o0kti4m.fsf@pobox.com> (Andy Wingo's message of "Sat, 10 Sep 2011 10:35:53 -0700")

Hi,

Andy Wingo <wingo@pobox.com> skribis:

> I'm excited about the partial evaluator.  However there is one error
> I've found:
>
>   (letrec ((fold (lambda (f x b null? car cdr)
>                    (if (null? x)
>                        b
>                        (f (car x) (fold f (cdr x) b null? car cdr))))))
>     (fold * x 1 zero? (lambda (x) x) (lambda (x) (- x 1))))
>
> The expansion ends up with the body including lexical-refs to `car' and
> `cdr', but they aren't bound in the letrec body.

I believe this is now fixed:

  http://git.sv.gnu.org/cgit/guile.git/commit/?h=stable-2.0&id=61237fa4b96d020e96388cca4fd065ddf43bca60

Thanks!

Ludo’.



  parent reply	other threads:[~2011-09-13 17:04 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-10 17:35 peval error Andy Wingo
2011-09-10 23:05 ` Ludovic Courtès
2011-09-13 17:04 ` Ludovic Courtès [this message]
2011-09-15 18:23   ` Andy Wingo
2011-09-15 21:44     ` Ludovic Courtès
2011-09-16 10:02       ` Ludovic Courtès
2011-09-17  0:43         ` Andy Wingo
2011-09-17 10:31           ` Ludovic Courtès
2011-09-17 14:52           ` Ludovic Courtès
2011-09-17 17:54             ` Andy Wingo
2011-09-18 10:00               ` bug#9542: " Ludovic Courtès
2011-09-18 21:05               ` Ludovic Courtès

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

  List information: https://www.gnu.org/software/guile/

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=87d3f4s7a3.fsf@gnu.org \
    --to=ludo@gnu.org \
    --cc=bug-guile@gnu.org \
    --cc=wingo@pobox.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).