bug#39962: 27.0.90; Crash in Emacs 27.0.90

[Pieter van Oostrum]

Eli Zaretskii <eliz@gnu.org> writes:

>> Date: Sat, 7 Mar 2020 00:55:39 +0100
>> From: Pieter van Oostrum <pieter@vanoostrum.org>
>> 
>> I got a segmentation fault in Emacs. I read my email with VM
>> (Viewmail), and I had a few fairly large mailboxes open when Emacs
>> crashed. I had a few other cases where it crashed under similar
>> circumstances, but other cases where it ran without problems.
>> 
>> I have the crashed instance under gdb, and I will keep it some time
>> there to be able to extract more info. For the time being it looks
>> like it is in the garbage collector.
>> 
>> The backtrace is very large, so it could be a stack overflow.
>
> Please show the first few backtrace frames (with "bt 10", for
> example), they are important for trying to figure out whether this was
> a stack overflow or something else.
>
> What is the max stack size of your Emacs binary?

It is the default nextstep stack size, I don't know how much that is.
It is configured with
./configure --build i686-apple-darwin10.0.0 \
      --without-dbus --with-ns \
          --enable-checking='yes,glyphs' --enable-check-lisp-object-type \
          CFLAGS="-pipe -march=nocona -O0 -g3"
that I picked up some time ago from a shell script to build nightlies.

But my gdb is now in a not-usable state, so I will have to reconstruct the 
crash to get more information.
-- 
Pieter van Oostrum
www: http://pieter.vanoostrum.org/
PGP key: [8DAE142BE17999C4]