Evas object: verify the parent is valid and fail if not.

It seems like before the switch to Eo, all the object_*_add functions
had magic checks that only allowed non NULL Evas pointers to be passed.
Since we switched to Eo we apparently missed the early failure we used
to have, and we instead fail later. This patch should fix that.

Thanks to jaehwan for reporting.

@fix

1 files changed, 5 insertions, 1 deletions

diff --git a/src/lib/evas/canvas/evas_object_main.c b/src/lib/evas/canvas/evas_object_main.c
index da97914345..1b3fe4b81c 100644
--- a/src/lib/evas/canvas/evas_object_main.c
+++ b/src/lib/evas/canvas/evas_object_main.c
@@ -85,11 +85,15 @@ _init_cow(void)
 EOLIAN static void
 _evas_object_eo_base_constructor(Eo *eo_obj, Evas_Object_Protected_Data *obj)
 {
+   Eo *parent = NULL;
+
    eo_do_super(eo_obj, MY_CLASS, eo_constructor());
    eo_do(eo_obj, evas_obj_type_set(MY_CLASS_NAME));
    eo_manual_free_set(eo_obj, EINA_TRUE);
 
-   if (!obj || !_init_cow())
+   eo_do(eo_obj, parent = eo_parent_get());
+
+   if (!obj || !_init_cow() || !eo_isa(parent, EVAS_COMMON_INTERFACE_INTERFACE))
      {
         eo_error_set(eo_obj);
         return;