evas_clip: check for object validity before adding fallback damage rect

this path should not be triggered for objects which are being deleted,
which was the case in all of the referenced bug reportst

fix T4904, T7100, T7421

Reviewed-by: Cedric BAIL <cedric.bail@free.fr>
Differential Revision: https://phab.enlightenment.org/D8445

diff --git a/src/lib/evas/canvas/evas_clip.c b/src/lib/evas/canvas/evas_clip.c
index 3678d4aa8266d57f7e9e7285a2610e5cce85b7fc..809c24f72a0ff8eb4c9c769ff9098fe1c99dcc23 100644 (file)
--- a/src/lib/evas/canvas/evas_clip.c
+++ b/src/lib/evas/canvas/evas_clip.c
@@ -289,7 +289,8 @@ _efl_canvas_object_clipper_unset_common(Evas_Object_Protected_Data *obj, Eina_Bo
              if (((clip->cur) && (clip->cur->visible)) &&
                  (((clip->cur->color.r != 255) || (clip->cur->color.g != 255) ||
                    (clip->cur->color.b != 255) || (clip->cur->color.a != 255)) ||
-                  (clip->mask->is_mask)))
+                  (clip->mask->is_mask)) &&
+                  efl_alive_get(clip->object))
                {
                   if (clip->layer)
                     {