bug#16420: 24.3; Drawing an overlay causes 100% cpu utilization

[Jan Djärv]

2014-01-12 17:30, Eli Zaretskii skrev:
> > Date: Sun, 12 Jan 2014 20:04:22 +0400
> > From: Dmitry Antipov <dmantipov@yandex.ru>
> > Cc: 16420@debbugs.gnu.org
> >
> > On 01/12/2014 02:01 AM, Lars Andersen wrote:
> >
> > > Starting from emacs -Q:
> > >
> > > (defface flycheck-warning
> > > '((((supports :underline (:style wave)))
> > > :underline (:style wave :color "DarkOrange"))
> > > (t
> > > :underline t :inherit warning))
> > > "Flycheck face for warnings."
> > > :package-version '(flycheck . "0.13")
> > > :group 'flycheck-faces)
> > > (let ((ov (make-overlay (point) (point-at-eol)))
> > > (face 'flycheck-warning))
> > > (overlay-put ov 'face face)) ;; C-x C-e this last form to reproduce
> >
> > Note that C-x C-e has no visible effect until you evaluate first
> > 'defface' form too.
>
> Dmitry, can you reproduce this?  Because I can't, neither in Emacs
> 24.3 nor in the latest trunk.  But that's on MS-Windows; I don't have
> access to a GUI session on Unix.

Can't reproduce on GNU/Linux, Gtk 3, emacs 24.3 or the trunk.  X is using 
about 1%, emacs less than that as it is idle.

        Jan D.