bug#38748: 28.0.50; crash on MacOS 10.15.2

[Alan Third]

On Sat, Jan 04, 2020 at 05:48:04PM +0100, Pieter van Oostrum wrote:
> Andrii Kolomoiets <andreyk.mad@gmail.com> writes:
> 
> > But I found the commit after which error is occurs:
> > b2949d39261e82c33572ba8a250298ef0b165b95
> >
> > Commenting out that 'ok = false;' line make Emacs works without errors.
> >
> > Justin, can you please check if Emacs prior to that commit is works fine
> > for you?
> 
> I had Emacs built from master a few days ago, and got the same crashes, about 
> twice a day, often when Emacs was idle.
> So I decided to compile from the parent of the commit mentioned above, which 
> is 73f37da12d.
> 
> However, this one also crashed, albeit with a different crash. See the 
> attachment.
> 
> 8   org.gnu.Emacs                     0x00000001011cdb58 handle_fatal_signal 
> + 24
> 9   org.gnu.Emacs                     0x00000001011cdbf2 
> deliver_thread_signal + 146
> 10  org.gnu.Emacs                     0x00000001011cb3da 
> deliver_fatal_thread_signal + 26
> 11  org.gnu.Emacs                     0x00000001011cdc96 handle_sigsegv + 134
> 12  libsystem_platform.dylib          0x00007fff756adf5a _sigtramp + 26
> 13  ???                               000000000000000000 0 + 0
> 14  org.gnu.Emacs                     0x0000000101053bab 
> Fmouse_pixel_position + 187

Hmm, I made a change to the NS mouse position code recently

fbf9fea4fdad467429058077b8087dbd0758b964

Perhaps that’s related somehow.

-- 
Alan Third