bug#70385: Crash in note_fringe_highlight

[Po Lu]

Björn Bidar <bjorn.bidar@thaodan.de> writes:

> 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.

I think I've fixed this on master.  Please test, thanks.