GNU bug report logs - #77725
31.0.50; Add support for types accepted by `cl-typep' to cl-generic?

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Message #89 received at 77725 <at> debbugs.gnu.org (full text, mbox):

From: David Ponce <da_vid <at> orange.fr>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 77725 <at> debbugs.gnu.org, Eli Zaretskii <eliz <at> gnu.org>
Subject: Re: bug#77725: 31.0.50; Add support for types accepted by `cl-typep'
 to cl-generic?
Date: Wed, 23 Apr 2025 14:59:28 +0200

[Message part 1 (text/plain, inline)]

While working with cl-types.el I discovered a nasty side effect
of byte compilation on the cl--type-list.

I can't explain what is going on :-(

Here is a recipe:

- run emacs -Q

- load cl-type.el (the last version previously attached)

- load cl-type-recipe.el (attached)

- In the scratch buffer eval cl--type-list.  Result is expected:

  (cons-cdr-foo cons-car-foo)

- Then open cl-type-recipe.el and byte-compile it with
  M-x emacs-lisp-byte-compile

- Then eval again cl--type-list in the scratch buffer, and now the
  result is something like this:

  (#<symbol cons-cdr-foo at 158> #<symbol cons-car-foo at 46>)

  Which completely breaks cl-types !

I hope you can shed some light on what is going on here.

Thanks!

[cl-type-recipe.el (text/x-emacs-lisp, attachment)]

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