bug#70385: Crash in note_fringe_highlight

[Björn Bidar]

Björn Bidar via "Bug reports for GNU Emacs, the Swiss army knife of text
editors" <bug-gnu-emacs@gnu.org> writes:

>> Hi Juri,
>>
>> This must be related to the recent patch introducing the function.
>>
>> Can you reliably reproduce the crash?
>
> I have the same problem. I tried to replicate it with Emacs -Q but
> it seems hard to do since it just happens at some point when using Emacs
> and moving around between screens/virtual desktops.

Actually I've found a way.
1. Open a file using a mode that uses fringe indicators such as flycheck
2. Point at the indicator
3. Crash

Sometime not even that is needed. E.g. I was moving from the monitor
that the frame is on which Gnus is inside where I'm writing this reply
to my browser on the other monitor.
Just a few seconds after I was on the the other monitor Emacs crashed.