From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Madhu <enometh@meer.net>
Cc: emacs-devel@gnu.org
Subject: Re: obscure compilation error with cl-defstruct &aux boa constructor
Date: Sun, 17 Apr 2022 11:16:30 -0400 [thread overview]
Message-ID: <jwvtuarzrem.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <m3y205yo11.fsf@leonis4.robolove.meer.net> (Madhu's message of "Sat, 16 Apr 2022 22:16:18 +0530")
Madhu [2022-04-16 22:16:18] wrote:
> byte-code("#!E\"" [set-advertised-calling-convention cl-prettyexpand (form) "27.1" require help-mode add-to-list describe-symbol-backends nil cl-find-class #[771 "!" [cl-describe-type] 5 "\n\n(fn S B F)"]] 5)
> cl-subseq((&cl-defs (nil (cl-tag-slot) (stack) (ppss) (ppss-point)) &optional (ppss (lisp-ppss)) &aux (ppss-point (point)) (stack (make-list (1+ (car ppss)) nil))) 0 4)
It looks like some frames are missing between these two.
> The error goes away if I remove the &aux (and thus make all the
> arguments optional)
I must say that seeing your backtrace I can't understand why your code
doesn't work or rather why our code works (the call to `cl-subseq`
depends on the presence of `&aux` which is already present in our code).
> Might this be a bug from a recent change? (I've not looked at the
> changes yet, so this is a note to self)
The bootstrap is delicate and ad-hoc.
Sometimes innocuous changes can break it.
Stefan
next prev parent reply other threads:[~2022-04-17 15:16 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-16 16:46 obscure compilation error with cl-defstruct &aux boa constructor Madhu
2022-04-17 15:16 ` Stefan Monnier [this message]
2022-04-18 2:44 ` Madhu
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