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Simon McVittie 78d6ccd804 ShellApp: Use g_signal_connect_object for window signals 
A window being unmanaged can cause the ShellApp to be removed from
the ShellAppSystem, which if we are unlucky is the app's last
reference, causing it to be disposed and freed. It would be bad if this
happened before we finished handling the signal.

Use g_signal_connect_object to ensure that a reference is held to
the ShellApp for the duration of the signal handler, delaying its
last-unref.

In particular, when a signal handler calls _shell_app_remove_window(),
there is a brief period for which ShellApp breaks the intended
invariant (see !497) that app->running_state is non-NULL if and only if
app->running_state->windows is also non-NULL (non-empty). Freeing the
ShellApp at this point would cause a crash. This seems likely to be the
root cause of <https://gitlab.gnome.org/GNOME/gnome-shell/issues/750>,
<https://gitlab.gnome.org/GNOME/gnome-shell/issues/822> and
<https://bugs.debian.org/926212>.

Signed-off-by: Simon McVittie <smcv@debian.org>


(cherry picked from commit 0f531d8c44)
2019-04-23 13:10:32 +00:00
.gitlab-ci ci: Use custom image for JS checks 2019-02-26 21:08:17 +00:00
.settings Clean out some eclipse artefacts 2019-02-13 04:39:26 +01:00
data switch: Drop separate handling for US 2019-04-16 17:28:31 +00:00
docs/reference shell: Remove ShellGenericContainer 2018-10-08 22:44:14 -03:00
js barLevel: Don't show border radius if the value is 0 2019-04-17 18:38:13 +00:00
man man: Update project website 2018-01-07 21:39:18 +01:00
meson build: Run postinstall script where necessary 2018-04-09 19:19:33 +00:00
po Update Slovak translation 2019-04-01 15:09:41 +00:00
src ShellApp: Use g_signal_connect_object for window signals 2019-04-23 13:10:32 +00:00
subprojects gvc: Update submodule to up-to-date version 2019-02-28 21:59:08 +01:00
test Add convert_xml test 2019-03-04 20:55:15 +00:00
tests cleanup: Use destructuring for imports from GI 2019-02-09 07:39:20 +01:00
tools build: Remove Canberra dependency 2019-01-09 23:09:18 +00:00
.gitignore Ignore '.vscode' folder for users of that editor 2019-04-02 17:37:31 +00:00
.gitlab-ci.yml ci: Use custom image for commit log check 2019-04-03 13:50:35 +02:00
.gitmodules submodules: Replace non-functional git.gnome.org URL by GNOME Gitlab URL 2018-09-25 08:41:30 +02:00
cldr2json.py Fix override for fr-CA 2019-03-04 20:55:15 +00:00
config.h.meson Add check_cloexec_fds debug command 2018-07-30 23:11:41 +00:00
COPYING Changed obsolete FSF postal address. 2014-01-08 04:35:14 +07:00
gnome-shell.doap Replace Bugzilla by Gitlab URL in DOAP file 2018-12-15 23:26:54 +01:00
HACKING.md cleanup: Use destructuring for imports from GI 2019-02-09 07:39:20 +01:00
meson_options.txt Remove the browser plugin 2018-12-31 13:25:05 -06:00
meson.build Bump version to 3.32.1 2019-04-17 21:08:32 +02:00
NEWS Bump version to 3.32.1 2019-04-17 21:08:32 +02:00
README.md README.md: Add contribution section 2019-02-13 20:37:39 +01:00
README.mdwn Add basic documentation 2019-03-04 20:55:15 +00:00

README.md

GNOME Shell

GNOME Shell provides core user interface functions for the GNOME 3 desktop, like switching to windows and launching applications. GNOME Shell takes advantage of the capabilities of modern graphics hardware and introduces innovative user interface concepts to provide a visually attractive and easy to use experience.

For more information about GNOME Shell, including instructions on how to build GNOME Shell from source and how to get involved with the project, see the project wiki.

Bugs should be reported to the GNOME bug tracking system.

Contributing

To contribute, open merge requests at https://gitlab.gnome.org/GNOME/gnome-shell.

Commit messages should follow the GNOME commit message guidelines. We require an URL to either an issue or a merge request in each commit.

License

GNOME Shell is distributed under the terms of the GNU General Public License, version 2 or later. See the COPYING file for details.