GNU bug report logs - #77046
31.0.50; Emacs sometimes crashes

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Message #68 received at 77046 <at> debbugs.gnu.org (full text, mbox):

From: Markus Triska <triska <at> metalevel.at>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: gerd.moellmann <at> gmail.com, pipcet <at> protonmail.com, 77046 <at> debbugs.gnu.org
Subject: Re: bug#77046: 31.0.50; Emacs sometimes crashes
Date: Sat, 22 Mar 2025 19:08:48 +0100

Eli Zaretskii <eliz <at> gnu.org> writes:

> your source tree is out of sync with the master branch, or some other
> factor is at work here.  Or maybe this backtrace is from Emacs before
> my fix?

In the example I posted, the crash still occurs also with a freshly
compiled Emacs from today's master branch which includes your fix.

>
> What does the below produce in GDB?
>
>   (gdb) frame 1
>   (gdb) print f->after_make_frame

I get:

    Program received signal SIGSEGV, Segmentation fault.
                                                        0x000055555559de87 in first_enabled_row (matrix=0x0) at dispnew.c:3499
    3499      for (int i = 0; i < matrix->nrows; ++i)
    (gdb) frame 1
    #1  0x000055555559deb9 in make_matrix_current (f=0x555555b9b520)
        at dispnew.c:3511
    3511      int first_row = first_enabled_row (f->desired_matrix);
    (gdb) print f->after_make_frame
    $1 = false

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