bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects

[Eli Zaretskii]

> From: Pip Cet <pipcet@gmail.com>
> Date: Mon, 25 May 2020 06:40:11 +0000
> Cc: 41321@debbugs.gnu.org, Stefan Monnier <monnier@iro.umontreal.ca>
> 
> What are you actually planning to do?

Given the fact that I'm the only one who sees these problems?  Not
much: I intend to continue running Emacs under GDB and collect data
about the crashes until either I figure out what causes the crashes,
or the crashes disappear (which would mean the problem was fixed
indirectly by some other change).

> I think we should work around the mingw bug on both the master and
> emacs-27 branches.

That depends on what the proposed solution or workaround will be.  We
need to see where the discussion of the alignment issue goes and what
we decide to do about that.

> What we should not do is encourage people to keep looking for another
> Emacs bug based on the existing backtraces.

Indeed, I'm posting the backtraces for the record; no one should feel
compelled to study them unless they are interested.