ecore_evas: prevent double free evas.

When user manually free the ecore evas,
it could delete evas internally,
then evas_invalidate would be triggered,
invalidate callback would try free evas again,
this causes double free evas.

TEST SCENARIO:
   ee = ecore_evas_new(...);
   ...
   ecore_evas_free(ee);
      -> free evas
         -> invalidated cb
            -> free evas (**double free)

This is a regression bug by 5847886a3fdb7c470bd55e215b822bbbaf109080

1 files changed, 6 insertions, 1 deletions

diff --git a/src/lib/ecore_evas/ecore_evas.c b/src/lib/ecore_evas/ecore_evas.c
index 672b7c4072..18c251f007 100644
--- a/src/lib/ecore_evas/ecore_evas.c
+++ b/src/lib/ecore_evas/ecore_evas.c
@@ -3502,7 +3502,11 @@ _ecore_evas_free(Ecore_Evas *ee)
    ee->prop.wm_rot.manual_mode.timer = NULL;
    eina_hash_free(ee->prop.cursors);
    ee->prop.cursors = NULL;
-   if (!ee->evas_dying) evas_free(ee->evas);
+   if (!ee->evas_dying)
+     {
+        ee->evas_dying = EINA_TRUE;
+        evas_free(ee->evas);
+     }
    ee->evas = NULL;
    ECORE_MAGIC_SET(ee, ECORE_MAGIC_NONE);
    ee->driver = NULL;
@@ -5276,6 +5280,7 @@ static void
 _ecore_evas_event_del(void *data, const Efl_Event *ev EINA_UNUSED)
 {
    Ecore_Evas *ee = data;
+   if (ee->evas_dying) return;
 
    ee->evas_dying = EINA_TRUE;
    ecore_evas_free(ee);