bug#35264: "Match data clobbered by buffer modification hooks" when hooks only shifted match-data's markers

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: npostavs@gmail.com,  monnier@iro.umontreal.ca,  35264@debbugs.gnu.org
> Date: Wed, 12 May 2021 17:43:33 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > What about bug#23869, which triggered the addition of that code?
> 
> I tried the code example in that bug report now (with the patch that
> removes the sanity check), and it did not crash Emacs.  So that sanity
> check no longer seems to be necessary?

Probably because some code somewhere uses save-match-data.