bug#44047: current HEAD has been crashing on startup

[Eli Zaretskii]

> Date: Sun, 18 Oct 2020 19:10:12 -0600 (MDT)
> From: Liam Stitt <stittl@cuug.ab.ca>
> cc: 44047@debbugs.gnu.org
> 
> > Can you build an unoptimized version, run it under GDB, and when it
> > crashes, show a backtrace?
> 
> Does building the unoptimized version require more than tweaking the 
> CFLAGS entry in src/Makefile? If not, this is what I got:

Thanks.  Please reproduce the crash again, and this time say

  (gdb) bt full

and post everything that produces.

> 0x0000555555598126 in fill_up_frame_row_with_spaces (row=0x100, upto=0)
                                                       ^^^
That 'row' pointer is clearly bogus (and causes the crash).  The
question is how does this happen.  I hope the output of "bt full" will
give some ideas.

Thanks.

P.S. Is this on some terminal emulator?  If so, which one (xterm,
something else?), and what are the dimensions of the terminal window
where you invoke Emacs?