bug#38748: 28.0.50; crash on MacOS 10.15.2

[Eli Zaretskii]

> From: Pip Cet <pipcet@gmail.com>
> Date: Fri, 10 Jan 2020 09:22:30 +0000
> Cc: rpluim@gmail.com, alan@idiocy.org, jguenther@gmail.com, 
>       andreyk.mad@gmail.com, 38748@debbugs.gnu.org
> 
> > I still think the shortest way to finding the culprit here is to
> > patiently and painfully go over the last_marked array, deciphering
> > the Lisp object we marked, until we succeed in identifying the Lisp
> > data structure which got corrupted.  Once we succeed in identifying
> > that data structure, it should be relatively easy to find who and
> > where corrupts it.  This may mean a lot of inconvenient drudgery,
> > exacerbated by the fact that having a functional GDB on macOS is not
> > easy, but I don't think we have a better way at this point.
> 
> I disagree. The patch to nsterm.m is obviously harmless, and appears
> to fix the one bug we have clear evidence of, in a way that seems
> logical and necessary to me.

I wasn't talking about that part (I agree that fix should be
installed), but again, it's unrelated to the initialization of 'ok'.