From f46816c086e88a5b3e3cc6e936a603c7c07ffac6 Mon Sep 17 00:00:00 2001
From: Harry Barber <harrybarber@protonmail.com>
Date: Thu, 17 Feb 2022 19:44:16 +0000
Subject: [PATCH] Add assertion in clone_bundle_to

---
 crates/bevy_ecs/src/system/commands/mod.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/crates/bevy_ecs/src/system/commands/mod.rs b/crates/bevy_ecs/src/system/commands/mod.rs
index fd353e9eaf67f9..734b70aab1284d 100644
--- a/crates/bevy_ecs/src/system/commands/mod.rs
+++ b/crates/bevy_ecs/src/system/commands/mod.rs
@@ -540,6 +540,12 @@ impl<'w, 's, 'a> EntityCommands<'w, 's, 'a> {
     where
         T: Bundle + Clone,
     {
+        assert!(
+            self.commands.entities.contains(target),
+            "Attempting to clone from entity {:?} to entity {:?}, which doesn't exist.",
+            self.entity,
+            target
+        );
         self.commands.add(CloneBundleTo::<T> {
             source: self.entity,
             target,