From aa9386ddaf3df035a2fd12f0d084ec857d3f4e3d Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Fri, 15 Nov 2019 09:30:46 +0100
Subject: [PATCH] Add another sanity check to BindingValue.

---
 src/Avalonia.Base/Data/BindingValue.cs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/Avalonia.Base/Data/BindingValue.cs b/src/Avalonia.Base/Data/BindingValue.cs
index 8265a6cd53..50e71cf3fc 100644
--- a/src/Avalonia.Base/Data/BindingValue.cs
+++ b/src/Avalonia.Base/Data/BindingValue.cs
@@ -344,6 +344,11 @@ namespace Avalonia.Data
             {
                 throw new InvalidOperationException("BindingOperations.DoNothing is not a valid value for BindingValue<>.");
             }
+
+            if (value is BindingValue<object>)
+            {
+                throw new InvalidOperationException("BindingValue<object> cannot be wrapped in a BindingValue<>.");
+            }
         }
     }