GNU bug report logs - #63288
30.0.50; Emacs 30 packages fail to build with native comp on some machines

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Package: emacs;

Reported by: Brian Leung <leungbk <at> posteo.net>

Date: Fri, 5 May 2023 04:00:02 UTC

Severity: normal

Found in version 30.0.50

Done: Pip Cet <pipcet <at> protonmail.com>

Bug is archived. No further changes may be made.

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Message #119 received at 63288 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: "Basil L. Contovounesios" <basil <at> contovou.net>
Cc: damien <at> merenne.me, Pip Cet <pipcet <at> protonmail.com>, acorallo <at> gnu.org,
 Eli Zaretskii <eliz <at> gnu.org>, 63288 <at> debbugs.gnu.org
Subject: Re: bug#63288: 30.0.50; Emacs 30 packages fail to build with native
 comp on some machines
Date: Wed, 19 Feb 2025 16:33:18 -0500

> Does setting byte-compile-delete-errors actually have the same effect?

Not at all, no.  What it does is tell the compiler that it's OK to erase
code whose return value is unused even if the code could signal
an error at run time, as in:

    (let ((x (/ 5 n)))
      (+ n 1))

where the division usually can't be optimized away because it should
signal an error when `n` is zero.


        Stefan
This bug report was last modified 132 days ago.

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