GNU bug report logs - #53900
29.0.50; pgtk: Gtk-CRITICAL warning with customized default face

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Message #18 received at 53900-done <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: Stephen Berman <stephen.berman <at> gmx.net>
Cc: 53900-done <at> debbugs.gnu.org
Subject: Re: bug#53900: 29.0.50; pgtk: Gtk-CRITICAL warning with customized
 default face
Date: Thu, 10 Feb 2022 18:02:04 +0800

Stephen Berman <stephen.berman <at> gmx.net> writes:

> On Thu, 10 Feb 2022 10:12:08 +0800 Po Lu <luangruo <at> yahoo.com> wrote:
>
>> Stephen Berman <stephen.berman <at> gmx.net> writes:
>>
>>> 0. emacs -Q
>>> 1. Sanity check: evaluating the following sexp displays a non-GTK
>>>    tooltip and the shell emits no warning:
>>>    (let (use-system-tooltips)
>>>     (tooltip-show "Test"))
>>> 2. Evaluate this sexp:
>>>    (custom-set-faces '(default ((t (:background "lightblue")))))
>>> 3. Evaluate the sexp in step 1 again:
>>> => A non-GTK tooltip is displayed and the shell emit a warning:
>>>
>>> emacs-pgtk:12321): Gtk-CRITICAL **: 17:05:36.422: gtk_css_provider_load_from_data: assertion 'GTK_IS_CSS_PROVIDER (css_provider)' failed
>>>
>>> In my tests this happens only when customizing the `default' face
>>> (though admittedly I haven't tested all faces nor all face attributes).
>>> It also happens when step 2 is replaced by loading any built-in theme
>>> (all of which customize the `default' face).  (As a test I created a
>>> theme that does not customize the `default' face and with that theme did
>>> not get the warning.)
>>>
>>> My first pgtk-build that shows this warning is from commit
>>> dc5930ba973c9d921e9124b7afa1a65bba568b45.  My previous pgtk-build at
>>> commit 988d3d79bac0343dd2b1b89d1b15470edbb5e6ac does not show the
>>> warning with the above recipe.  Unfortunately, I don't have time now to
>>> do a git bisect to pinpoint the commit that causes the warning to be
>>> emitted.
>>>
>>> There is no warning if use-system-tooltips is non-nil.  And there is no
>>> warning with the above recipe in a non-PGTK GTK3 build.
>>
>> Should be fixed now on master.  Thanks.
>
> Confirmed, so I'm closing the bug.  Thanks.

Thanks for testing.

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