bug#67900: 30.0.50; Emacs Crahes When Executing Command `consult-buffer'

[Eli Zaretskii]

> From: Chang Xiaoduan <drcxd@sina.com>
> Cc: acorallo@gnu.org,  67900@debbugs.gnu.org
> Date: Sat, 23 Dec 2023 10:30:14 +0800
> 
> I have added a file-local prop-line to each of bytecomp.el, mule.el and
> startup.el, which sets the `native-comp-speed` to 1. Then I rebuilt
> Emacs and test with a cosnult.el with `native-comp-speed` as 2. Is this
> the correct setup to test? The result: Emacs still crashes when
> executing `consult-buffer`.
> 
> Further more, I have another test with `native-comp-speed` in comp.el
> set to 1. That is, the default optimizaiton level for all
> native-compiled lisp code is 1. Then, I add a file-local prop-line in
> consult.el and set the `native-comp-speed` to 2. The result: Emacs still
> crashes when executing `consult-buffer`.
> 
> I guess this is enough to confirm that the miscompiled code is in
> consult.el.

I think so, yes.  Andrea, do you agree?

> What should I do next?

If Andrea agrees, I hope he will be able to propose a way of narrowing
this down, tailored specifically to the code in consult.el.