[Xfce4-commits] [xfce/xfwm4] 05/05: main: Only allow for the x11 gdk backend

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   in repository xfce/xfwm4.

commit 6a44ecc303f3cdb6ba33c0f9b75710c4c0983760
Author: Olivier Fourdan <fourdan at xfce.org>
Date:   Wed Dec 6 09:53:25 2017 +0100

    main: Only allow for the x11 gdk backend
    
    When running xfwm4 from a nested X11 server (Xnest, Xephyr) from within
    a Wayland session, GDK will selects in priority the Wayland backend,
    which will lead to a crash because xfwm4 is an X11 window manager and
    not a Wayland client.
    
    Signed-off-by: Olivier Fourdan <fourdan at xfce.org>
---
 src/main.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/main.c b/src/main.c
index 28136e1..254ed54 100644
--- a/src/main.c
+++ b/src/main.c
@@ -673,6 +673,12 @@ main (int argc, char **argv)
 
     xfce_textdomain (GETTEXT_PACKAGE, PACKAGE_LOCALE_DIR, "UTF-8");
 
+    /* xfwm4 is an X11 window manager, no point in trying to connect to
+     * any other display server (like when running nested within a
+     * Wayland compositor).
+     */
+    gdk_set_allowed_backends ("x11");
+
 #ifndef HAVE_XI2
     /* Disable XI2 in GDK */
     gdk_disable_multidevice ();

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