bug#71224: 30.0.50; SIGSEGV in start_display

[Eli Zaretskii]

> From: Daniel Clemente <n142857@gmail.com>
> Date: Tue, 28 May 2024 16:49:31 +0000
> Cc: 71224@debbugs.gnu.org
> 
> Program received signal SIGSEGV, Segmentation fault.
> start_display (it=0x7fffffb96bd0, w=0x5555621f25a0, pos=...) at xdisp.c:3734
> 3734  row = w->desired_matrix->rows + first_vpos;
> (gdb) p w->desired_matrix
> $1 = (struct glyph_matrix *) 0x0

I don't understand how we can have a window without the glyph
matrices.  But you haven't shown a full backtrace, neither in C nor in
Lisp, in this bug report, so I have very little data to work with.
Please post the two stacks in their entirety.