bug#30364: 26.0.91; thread crash on macos

[Noam Postavsky]

Aaron Jensen <aaronjensen@gmail.com> writes:

> I'm trying out porting company-dabbrev to use a thread and things aren't
> going well. The biggest problem so far is that Emacs occasionally
> crashes while using threads.
>
> The mac crash dump and super naive async company-dabbrev are here:
>
> https://gist.github.com/aaronjensen/7b1685a7d275c20d8f0eb7170addf1d7
>
> It seems to crash after a while of using it, though I'm also able to
> repro the crash by evaling:
>
> (company-dabbrev-thread (lambda (words) (message "%S" words)))
>
> several times in a row

I was going to check if this happens on systems other than macOS, but as
far as I can tell, the code you posted doesn't define the function
"company-dabbrev-thread".  So I guess what you posted and what are
running aren't quite the same...