bug#39962: 27.0.90; Crash in Emacs 27.0.90

[Eli Zaretskii]

> From: Pieter van Oostrum <pieter-l@vanoostrum.org>
> Cc: 39962@debbugs.gnu.org,  eggert@cs.ucla.edu,  pipcet@gmail.com
> Date: Sun, 15 Mar 2020 20:49:54 +0100
> 
> Pieter van Oostrum <pieter-l@vanoostrum.org> writes:
> 
> (gdb) p $rsp
> $1 = (void *) 0x7ffeef9c9270

What is the value of stack_bottom?

And how many frames do you have in that backtrace, if you show all of
it?