Gerd Möllmann <gerd.moellmann@gmail.com> writes:

>> Well, it's possible, but quite unlikely, that it is the
>> handlerlist_sentinel thing or the Lisp_Mutex->name thing (both fixed).
>> Much more likely it's another issue.
>
> Let's see, I've just transferred you latest commits. Like I mentioned,
> it can take days for the thing to surface.

The handlerlist_sentinel didn't help, BTW, but I had another idea today.
The function scan_ambig assumes that that references are aligned on word
boundaries (8 bytes here). I haven't checked (and I'm too lazy to check
:-)), but that assumption doesn't have to be true. Or, to say the least,
I didn't make sure the assumption holds.

I'm running with this in my branch only, for now.