From b0895651ee5b9111b21e6e8a9b358f5867e64b07 Mon Sep 17 00:00:00 2001
From: Josh Tynjala <joshtynjala@bowlerhat.dev>
Date: Wed, 29 May 2024 13:59:59 -0700
Subject: [PATCH] DisplayObjectContainer: throw error when attempting to add
 object as child to itself

Matches flash target behavior, and makes the issue more clear (instead of freeze/hang)
---
 src/openfl/display/DisplayObjectContainer.hx | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/openfl/display/DisplayObjectContainer.hx b/src/openfl/display/DisplayObjectContainer.hx
index 7b521d2c5e..c43ba8d3ba 100644
--- a/src/openfl/display/DisplayObjectContainer.hx
+++ b/src/openfl/display/DisplayObjectContainer.hx
@@ -194,6 +194,12 @@ class DisplayObjectContainer extends InteractiveObject
 			error.errorID = 2007;
 			throw error;
 		}
+		else if (child == this)
+		{
+			var error = new ArgumentError("Error #2024: An object cannot be added as a child of itself.");
+			error.errorID = 2024;
+			throw error;
+		}
 		#if ((haxe_ver >= "3.4.0") || !cpp)
 		else if (child.stage == child)
 		{