From e68f04b9d07b6128eb05bc6ca042c986c6501e90 Mon Sep 17 00:00:00 2001
From: George Marques <george@gmarqu.es>
Date: Tue, 22 Sep 2015 20:27:48 -0300
Subject: [PATCH] Check if shape is valid before referencing it

See the comment from @MartiniMoe at #2366.
---
 scene/2d/collision_shape_2d.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/scene/2d/collision_shape_2d.cpp b/scene/2d/collision_shape_2d.cpp
index cd89e914fb..dbe9d7179c 100644
--- a/scene/2d/collision_shape_2d.cpp
+++ b/scene/2d/collision_shape_2d.cpp
@@ -117,6 +117,9 @@ void CollisionShape2D::_notification(int p_what) {
 
 
 			Color draw_col=get_tree()->get_debug_collisions_color();
+            if(!shape.is_valid()) {
+                break;
+            }
 			shape->draw(get_canvas_item(),draw_col);