From 7f70d98bb43e8a0167a0d32803756b3e02f242da Mon Sep 17 00:00:00 2001
From: zvon <tom.zvon@gmail.com>
Date: Tue, 29 Sep 2020 18:33:50 +0200
Subject: [PATCH] Maybe fix possible race condition

---
 sdlpp.hpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sdlpp.hpp b/sdlpp.hpp
index a17596d..8b196b5 100644
--- a/sdlpp.hpp
+++ b/sdlpp.hpp
@@ -533,7 +533,8 @@ public:
     std::vector< std::shared_ptr< RenderObject > > getObjects(const std::unordered_set< int > &objectIDs) {
         std::vector< std::shared_ptr< RenderObject > > ret{};
         for ( const auto &x : render_objects ) {
-            if ( objectIDs.find( x->getId() ) != objectIDs.end() ) {
+            // check if object exists because of possible race condition
+            if ( x && objectIDs.find( x->getId() ) != objectIDs.end() ) {
                 ret.push_back( x );
             }
         }