GNU bug report logs - #61504
29.0.60; executing byte-code from previous build causes SIGSEGV crash

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Message #44 received at 61504 <at> debbugs.gnu.org (full text, mbox):

From: Gregory Heytings <gregory <at> heytings.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: mi-ebugs <at> kismala.com, mattiase <at> acm.org, monnier <at> iro.umontreal.ca,
 61504 <at> debbugs.gnu.org
Subject: Re: bug#61504: 29.0.60; executing byte-code from previous build
 causes SIGSEGV crash
Date: Tue, 14 Feb 2023 20:44:46 +0000

>> Hmmm, that's a good question!  The evaluation order of parameters is 
>> unspecified in C, so actually the order could be switched or not, 
>> depending on what the compiler chooses to do.
>
> But you could rewrite the code so that the parameters are evaluated one 
> after the other, and only after that call Fcons.  The compiler could 
> still change the order, but that would be less probable.
>

Agreed.

>> That being said, AFAICS it doesn't matter in this case, indeed.
>
> It is IME better to write code that doesn't trigger such questions to 
> begin with.
>

Agreed again.

>> Eli, OK to install?
>
> With the change of order per the above, yes.
>

Now done.

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