[mutter/gnome-3-32] window: Emit an error and return when trying to activate an unmanaged



commit 8b986cd0655eef3787c796e975d64caf9f0076f0
Author: Marco Trevisan (TreviƱo) <mail 3v1n0 net>
Date:   Fri May 3 18:10:47 2019 +0000

    window: Emit an error and return when trying to activate an unmanaged
    
    If something (i.e. gnome-shell or an extension) tries to activate an unmanaged
    window, we should warn about this and avoid to perform further actions as this
    could lead to a crash of mutter, since the window has not valid flags (like
    workspace) set anymore at this stage.
    
    Fixes https://gitlab.gnome.org/GNOME/mutter/issues/580
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/564
    
    
    (cherry picked from commit a6fc656e917fd48b8708b8d9f4bf9f8b15581313)

 src/core/window.c | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/src/core/window.c b/src/core/window.c
index 20caf1340..62dd89e74 100644
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -3683,6 +3683,13 @@ meta_window_activate_full (MetaWindow     *window,
 {
   MetaWorkspaceManager *workspace_manager = window->display->workspace_manager;
   gboolean allow_workspace_switch;
+
+  if (window->unmanaging)
+    {
+      g_warning ("Trying to activate unmanaged window '%s'", window->desc);
+      return;
+    }
+
   meta_topic (META_DEBUG_FOCUS,
               "_NET_ACTIVE_WINDOW message sent for %s at time %u "
               "by client type %u.\n",


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