Hi Gerd,

> On Dec 19, 2024, at 7:28 PM, Gerd Möllmann <gerd.moellmann@gmail.com> wrote:
> 
> Sean Devlin <spd@toadstyle.org> writes:
> 
>> Also, it looks like I can reproduce this under Emacs -Q.
>> 
>> Please let me know if and how I should debug the crash.
>> 
>> Thanks!
> 
> Can you please give me a recipe? (I don't have an idea how to debug
> this, one would need to know what in the function goes wrong, possibly
> by setting a breakpoint on it, and doing some assembler. Urgs :-))

Sure, I can reproduce this just by doing:

open -n -a Emacs --args -Q
C-h d searchstring RET

And Emacs crashes right away.

Hope this helps!