bug#46916: 28.0.50; pure_alloc(10424, ...) fails badly when pure space is exhausted

[Eli Zaretskii]

> From: Stefan Kangas <stefan@marxist.se>
> Date: Sat, 30 Oct 2021 19:56:42 -0700
> Cc: Pip Cet <pipcet@gmail.com>, 46916@debbugs.gnu.org
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> From: Pip Cet <pipcet@gmail.com>
> >> Date: Thu, 4 Mar 2021 12:44:49 +0000
> >>
> >> On Thu, Mar 4, 2021 at 12:26 PM Pip Cet <pipcet@gmail.com> wrote:
> >> > Pure space should be removed. But until it is, it shouldn't exhaust
> >> > all virtual memory, crashing the machines of the unwary ones who tried
> >> > to build emacs without a ulimit...
> >>
> >> This minimal patch "fixes" the issue here, by throwing a fatal error
> >> in this unusual and avoidable situation. No new test as not testable.
> >
> > Just enlarge the pure space amount, and be done with it.  That's what
> > we always do when this happens.
> 
> There's a patch here that was never installed.  Eli didn't sound to
> enthusiastic.  Is there anything more left to do here, or should this
> just be closed?  Or should purespace be enlarged?

We could enlarge the pure space size, yes.  but since no one has yet
reported any problems with that, I tend to do nothing for now.