From 8bd8a61142888faba20d41c8f9f5b22969dfa245 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@users.noreply.github.com>
Date: Mon, 25 Jun 2018 10:46:50 +0200
Subject: [PATCH] Throw if no matching property accessor found.

This shouldn't happen normally as `InpcPropertyAcessorPlugin` matches everything.
---
 src/Avalonia.Base/Data/Core/PropertyAccessorNode.cs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/Avalonia.Base/Data/Core/PropertyAccessorNode.cs b/src/Avalonia.Base/Data/Core/PropertyAccessorNode.cs
index 2565a34322..e9831eb047 100644
--- a/src/Avalonia.Base/Data/Core/PropertyAccessorNode.cs
+++ b/src/Avalonia.Base/Data/Core/PropertyAccessorNode.cs
@@ -53,6 +53,12 @@ namespace Avalonia.Data.Core
                 }
             }
 
+            if (accessor == null)
+            {
+                throw new NotSupportedException(
+                    $"Could not find a matching property accessor for {PropertyName}.");
+            }
+
             accessor.Subscribe(ValueChanged);
             _accessor = accessor;
         }