bug#24963: 26.0.50; toggle-frame-maximized broken by double-buffering patch

[Stephen Berman]

On Fri, 18 Nov 2016 15:01:10 +0100 Óscar Fuentes <ofv@wanadoo.es> wrote:

> Stephen Berman <stephen.berman@gmx.net> writes:
>
>> 0. emacs -Q
>> 1. M-x toggle-frame-maximized
>>    => frame is maximized
>> 2. M-x toggle-frame-maximized
>>    => frame remains maximized,
>
> Cannot reproduce, either with latest master
> (e8efa66e01933b8ae7ac9abf530a3818551c1343) nor with a build made just
> after the double-buffering feature was committed:
>
> In GNU Emacs 26.0.50.1 (x86_64-pc-linux-gnu, X toolkit)
>  of 2016-10-21 built on qcore
> Repository revision: 0929e061fb544c0f4c10ff0412a41cf7e8148270
> Windowing system distributor 'The X.Org Foundation', version 11.0.11804000
> System Description:   Ubuntu 16.10
>
> (Note that I use Lucid.)

I guess this is a toolkit-specific bug, then, perhaps GTK+ only.

(Unfortunately, I cannot build with lucid or even with no toolkit: both
fail with this error:

/usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../x86_64-suse-linux/bin/ld: 
image.o: undefined reference to symbol 'png_set_longjmp_fn@@PNG16_0'
/usr/lib64/libpng16.so.16: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
Makefile:611: recipe for target 'temacs' failed
)

Steve Berman