bug#19428: 25.0.50; Frame is wider (in chars) than normal non-deterministically

[martin rudalics]

> If I run "emacs -Q" multiple times in a row with the build described
> below in an X environment, I normally get a frame that my window manager
> describes as 80x34 characters in size.
>
> However, about one in every ten times, I get a differently sized frame,
> usually 84x36.  (And that is indeed the width in chars.)

Please do `M-: (window--dump-frame)' on both frame types and post the
contents of the buffer *window-frame-dump* for both cases so we can see
where we spend the extra space.

> To repeat, in order to reproduce this I run emacs -Q, check its size,
> then type `C-x C-c' and do it again until I see this happening.  This is
> also happening to me at work on an older system (Gnome 2 instead of
> Gnome 3), with a slightly older (but still recent) build of master.

Please do the same there and post the results as well.  Does/did it
happen with Emacs 24.4 too or do you see it only on Emacs 25?

> In GNU Emacs 25.0.50.1 (x86_64-unknown-linux-gnu, X toolkit)
>   of 2014-11-27 on maru2
> Repository revision: 1e3e8ae1d6da51606bf099e5cf02d6ab1f0c27ec
> Windowing system distributor `The X.Org Foundation', version 11.0.11602901
> System Description:        Debian GNU/Linux 8.0 (jessie)
>
> Configured using:
>   `configure --without-toolkit-scroll-bars --with-x-toolkit=lucid

It should be related to the combination of these options.  But maybe it
happens to other users as well and they simply ignore it.

>   'CFLAGS=-Og -ggdb -g3' --with-wide-int'

Thanks, martin