bug#81407: 31.0.90; Crash in display_line: stale glyph_row after window-config change from menu-bar :enable eval during redisplay

> From: Sean Whitton <[email protected]>
> Cc: [email protected], [email protected]
> Date: Fri, 14 Aug 2026 14:42:31 +0100
> 
> Eli Zaretskii [14/Aug  2:37pm +03] wrote:
> >> It seems that this patch makes an improvement; shall we install it on
> >> the release branch?
> >
> > I'm not sure.  If anything, I'd install on master.
> 
> Well, perhaps go ahead with that, we can always cherry-pick.

I will think about this some more.

> >> Also, do we have any reason to think this is a bug introduced in Emacs
> >> 31?  It seems like it is probably older.  I don't have a macOS machine
> >> to test on.
> >
> > It's a very old bug.  Basically, no one could expect Lisp called from
> > a menu-bar's :enable form or from :eval of the mode line to start
> > deleting windows.
> 
> Alan would seem to have determined otherwise?

He did? where?

> This is our final blocker for an RC this weekend.