bug#22916: 25.0.92; eww completely hangs Emacs on "invalid" png image

[Eli Zaretskii]

> From: Elric Milon <whirm@gmx.com>
> Cc: larsi@gnus.org, 22916@debbugs.gnu.org
> Date: Sun, 29 Jan 2017 10:17:31 +0100
> 
> > Please try disabling the double-buffering feature, like this:
> >
> >   M-: (modify-frame-parameters nil '((inhibit-double-buffering . t))) RET
> >
> > Alternatively, edit src/config.h to delete this line:
> >
> >   #define HAVE_XDBE 1
> >
> > and then rebuild Emacs.  Please tell if the problem goes away when you
> > try that.
> 
> 
> I tried the first option and it mostly works except for some garbage
> left behind when using helm (see right window on attached screenshot).

Did you forget to attach the screenshot?

Thanks.