bug#30364: 26.0.91; thread crash on macos

[Eli Zaretskii]

> From: Aaron Jensen <aaronjensen@gmail.com>
> Date: Sat, 17 Feb 2018 09:58:42 -0800
> Cc: 30364@debbugs.gnu.org, Noam Postavsky <npostavs@users.sourceforge.net>
> 
> https://gist.github.com/aaronjensen/aa4d7425f2ebef9ae05947529b42c404
> 
> Open init.el in a buffer so that all of those words are there for
> dabbrev to search.
> 
> Then eval crash.el
> 
> It doesn't crash *every* time, but most of the times it does. It also
> should actually print the messages.

When this crashes, is one of the threads you launched always doing GC,
like in the first backtrace you've shown?

Btw, I'm not really sure what you are doing and why: what is the
purpose of launching 100 threads all doing the same job with the same
data?