Well, I'm one of the testers I guess. I spend more or less all day with Emacs, and before applying the patch I had several crashes a day, and after zero. However, it's a hard bug to pin down (some kind of timing/racing condition I suspect). Accordingly there is no simple test case that can be applied that I am aware of. Based on the short time between the last two macOS beta releases (3 and 4) and the fact that the last version barely had any "change notes", I suspect macOS release is getting close. I would feel a lot more comfortable if all modern distributions of Emacs on macOS had this patch in rather than not. When/if we manage to pin it down with a reliable test case, a real fix of this or the underlying issue should be easier, but until then I vote to get the patch in ASAP. Additionally the patch only affects macOS users so the breakage potential should be small (at least compared to daily crashes which is the alternative). On Wed, 3 Aug 2016 at 04:39 Eli Zaretskii wrote: > > From: John Wiegley > > Cc: Eli Zaretskii , Emacs-Devel devel < > emacs-devel@gnu.org> > > Date: Tue, 02 Aug 2016 13:25:10 -0700 > > > > >>>>> Alan Third writes: > > > > > Hi John, are you OK with the patch? > > > > Yes, I am OK with the patch. Eli? > > If all those affected by the problem agree it's TRT, I'm OK with it > going to emacs-25. > >