[Wayland-bugs] [Bug 782283] Wayland: Crash when dismissing a menu when a tooltip is visible

[gtk+ (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=782283

Olivier Fourdan <ofourdan at redhat.com> changed:

           What    |Removed                     |Added
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                 CC|                            |ofourdan at redhat.com

--- Comment #1 from Olivier Fourdan <ofourdan at redhat.com> ---
Created attachment 351976
  --> https://bugzilla.gnome.org/attachment.cgi?id=351976&action=edit
[PATCH] wayland: check parent surface for subsurface

When an event is received while a tooltip is showing, the GtkTooltip's
event handling code can end up calling gdk_window_set_transient_for()
from gtk_tooltip_set_last_window().

The Wayland GDK backend will try to automatically create a subsurface
in gdk_wayland_window_set_transient_for() but if the parent surface is
gone meanwhile, this will will cause a crash when trying to create a
subsurface from a parent with a null surface.

Checking for the parent is not sufficient, we ought to check for the
parent surface as well to avoid the crash.

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