GNU bug report logs - #75615
29.4; Corfu+SLY = segmentation fault

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Message #8 received at 75615 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Alexis Purslane <alexispurslane <at> pm.me>
Cc: 75615 <at> debbugs.gnu.org
Subject: Re: bug#75615: 29.4; Corfu+SLY = segmentation fault
Date: Fri, 17 Jan 2025 09:11:11 +0200

> Date: Thu, 16 Jan 2025 21:39:59 +0000
> From:  Alexis Purslane via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
> 
> Intermittantly, when writing Common Lisp code using Emacs with both SLY
>     and Corfu enabled, always when about to complete a function name,
>     Emacs will just segfault. It doesn't happen reproducibly enough to
>     show up in the amount of time I can make myself use emacs -Q with
>     just SLY and Corfu, since that's very painful for my wrists,
>     although I might spend some time trying to come up with a minimal
>     config that'll be ergonomic enough for me to do so. But it does
>     happen often enough that I can reproduce it while running Emacs from
>     inside GDB if that's needed. Here's the stack trace printed out when
>     it segfaulted last time:
> 
>     Fatal error 11: Segmentation fault
> Backtrace:
> emacs-pgtk(emacs_backtrace+0x5a) [0x55935bfa3eaa]
> emacs-pgtk(terminate_due_to_signal+0x9f) [0x55935be73b17]
> emacs-pgtk(+0x128bb) [0x55935be748bb]
> emacs-pgtk(+0x2b5d04) [0x55935c117d04]
> /lib64/libc.so.6(+0x1a090) [0x7ff9dbec1090]
> emacs-pgtk(Fget+0xbb) [0x55935c0368db]
> emacs-pgtk(parse_modifiers+0x41) [0x55935bf88011]
> emacs-pgtk(+0x13cc88) [0x55935bf9ec88]
> emacs-pgtk(read_char+0x214a) [0x55935bf8d8ba]

Thanks, I believe this is bug#71744, which was already solved for the
upcoming Emacs 30.  Upgrading to the latest pretest of Emacs 30 should
solve this.  You can find the latest pretest of Emacs 30 here:

  https://alpha.gnu.org/gnu/emacs/pretest/emacs-30.0.93.tar.xz

Alternatively, installing the patch in

  https://debbugs.gnu.org/cgi/bugreport.cgi?bug=71744;att=5;msg=44;filename=0005-Don-t-ignore-Wclobbered-in-keyboard.c.patch

should also solve this.

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