A workaround against Emacs crash when displaying images

[Corinna Vinschen]

On Mar  8 13:36, Katsumi Yamaoka wrote:
> On Fri, 08 Mar 2019 08:36:24 +0900, Katsumi Yamaoka wrote:
> > I tried the 2019-03-06 snapshot and, oh!, I verified Emacs got
> > not to crash for displaying images without such a spell.
> > It seems Emacs revived as for me as it was before Cygwin 3.
> 
> I'm sorry that was a hasty conclusion.  Emacs suddenly freezes when
> I am typing somthing even if it is simply a text that will never
> change frame or window configuration nor displaying image; happens
> with Cygwin's Emacs and the ones I built from git; neither C-g nor
> `kill -9' doesn't help; killing it using the Windows task manager
> is the only measure to stop it.  As it makes me hard to work, I
> reverted the use of the snapshot to 3.0.2.

I could reproduce the hang and found a potential deadlock situation.
I pushed a fix and uploaded new developer snapshots to
https://cygwin.com/snapshots/

Please test.


Corinna

-- 
Corinna Vinschen
Cygwin Maintainer
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