From 947a44fc4ad5fa2263c48b92c4ea170b49fa67f2 Mon Sep 17 00:00:00 2001
From: aengland-lab <aengland@ea.com>
Date: Tue, 10 Feb 2026 08:16:57 +1100
Subject: [PATCH] Porting fix for .NET 9 for
 https://github.com/IronLanguages/ironpython3/issues/1811

 from https://github.com/IronLanguages/ironpython3/pull/1807/changes/9c2e61c49c4ffcea367c9566e24f5ded8a06dd9d
---
 Src/IronPython/Runtime/Types/NewTypeMaker.cs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Src/IronPython/Runtime/Types/NewTypeMaker.cs b/Src/IronPython/Runtime/Types/NewTypeMaker.cs
index b878a8e91..ca0f96ffe 100644
--- a/Src/IronPython/Runtime/Types/NewTypeMaker.cs
+++ b/Src/IronPython/Runtime/Types/NewTypeMaker.cs
@@ -540,6 +540,7 @@ private void ImplementCustomTypeDescriptor() {
             ImplementInterface(typeof(ICustomTypeDescriptor));
 
             foreach (MethodInfo m in typeof(ICustomTypeDescriptor).GetMethods()) {
+                if (!m.IsAbstract) continue;
                 ImplementCTDOverride(m);
             }
         }