Subject: Re: bug#51688: ELC+ELN international/emoji.elc crashes

From: Andrea Corallo <[email-masked]>
Date: Thu, 25 Nov 2021 10:57:35 +0000

Andrea Corallo <[email-masked]> writes:

> Eli Zaretskii <[email-masked]> writes:
>
>>> From: Andreas Schwab <[email-masked]>
>>> Cc: [email-masked],  [email-masked],  [email-masked]
>>> Date: Wed, 24 Nov 2021 14:06:04 +0100
>>> 
>>> On Nov 24 2021, Eli Zaretskii wrote:
>>> 
>>> > Do you happen to know which libgccjit versions are affected by the
>>> > bug?  We could tell people to avoid them.
>>> 
>>> Most likely all of them.
>>
>> Too bad.
>>
>> Andrea, can anything be done to work around this somehow (except to
>> upgrade to a later GCC)?  Or is there nothing we can do except keep
>> fingers crossed?
>
> I don't think there's much we can do to work around this on Emacs side
> (Martin please correct me if I'm wrong).
>
>>> > Or did this bug exist since day one?  (But if it's an old bug, why
>>> > doesn't everyone see these crashes?)
>>> 
>>> That's the effect of undefined behaviour.
>>
>> You mean, undefined behavior in libgccjit's own code, right?  Or in
>> our code?
>
> In libgccjit's own code.
>

As was identified as a libgccjit bug shall we close this one?

  Andrea