GNU bug report logs - #72692
Emacs 31.05 (40eecd594ac) get SIGSEGV on Linux (Linux 6.6.45 Kde Wayland)

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Message #187 received at 72692 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Juri Linkov <juri <at> linkov.net>
Cc: pipcet <at> protonmail.com, execvy <at> gmail.com, 72692 <at> debbugs.gnu.org
Subject: Re: bug#72692: Emacs 31.05 (40eecd594ac) get SIGSEGV on Linux
 (Linux 6.6.45 Kde Wayland)
Date: Thu, 29 Aug 2024 07:36:55 +0300

> From: Juri Linkov <juri <at> linkov.net>
> Cc: pipcet <at> protonmail.com,  execvy <at> gmail.com,  72692 <at> debbugs.gnu.org
> Date: Wed, 28 Aug 2024 22:02:44 +0300
> 
> >> >> OTOH, I tried to set a breakpoint inside 'if (non_basic_faces_cached)',
> >> >> and it's never visited.  So it seems this change has no effect
> >> >> in normal circumstances.
> >> >
> >> > I suggest to try Pip's recipe from
> >> >
> >> >   https://debbugs.gnu.org/cgi/bugreport.cgi?bug=72692#133
> >> >
> >> > (but without patching the C sources).
> >> 
> >> I tried Pip's recipe with the while loop, and it doesn't segfault.
> >> But it doesn't segfault without your patch either.
> >> So I couldn't confirm if the patch fixes the crashes.
> >
> > I meant to use that recipe to trigger the breakpoint inside
> > 'if (non_basic_faces_cached)'.
> 
> The breakpoint inside 'if (non_basic_faces_cached)'
> is triggered on every character inserted by Pip's recipe.
> So the condition in your patch works in this test,
> whereas it's never triggered in normal use.

Thanks.

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