From fb35448a4e5138b28125ae02766c20965af3e7e7 Mon Sep 17 00:00:00 2001
From: John Freeman <john@karbonhq.com>
Date: Wed, 31 May 2023 13:14:14 +1000
Subject: [PATCH] When traversing the DOM during SetChanged track the depth to
 avoid StackOverflowException

---
 src/HtmlAgilityPack.Shared/HtmlNode.cs | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/HtmlAgilityPack.Shared/HtmlNode.cs b/src/HtmlAgilityPack.Shared/HtmlNode.cs
index 629833c6..69c5ec29 100644
--- a/src/HtmlAgilityPack.Shared/HtmlNode.cs
+++ b/src/HtmlAgilityPack.Shared/HtmlNode.cs
@@ -2163,12 +2163,17 @@ public void SetParent(HtmlNode parent)
 
 #region Internal Methods
 
-		internal void SetChanged()
+		internal void SetChanged(int level = 0)
 		{
+			if (level > HtmlDocument.MaxDepthLevel)
+			{
+				throw new ArgumentException(HtmlNode.DepthLevelExceptionMessage);
+			}
+
 			_changed = true;
 			if (ParentNode != null)
 			{
-				ParentNode.SetChanged();
+				ParentNode.SetChanged(level + 1);
 			}
 		}