From 2c91d7f89323c736dd4afeaf6e13ad5efc247b06 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Wed, 26 Jul 2023 12:45:58 +0200
Subject: [PATCH] Handle null from RootProvider_GetWindow.

---
 native/Avalonia.Native/src/OSX/automation.mm | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/native/Avalonia.Native/src/OSX/automation.mm b/native/Avalonia.Native/src/OSX/automation.mm
index d0c8d7a9db..4b325a092d 100644
--- a/native/Avalonia.Native/src/OSX/automation.mm
+++ b/native/Avalonia.Native/src/OSX/automation.mm
@@ -73,6 +73,13 @@ private:
     if (peer->IsRootProvider())
     {
         auto window = peer->RootProvider_GetWindow();
+        
+        if (window == nullptr)
+        {
+            NSLog(@"IRootProvider.PlatformImpl returned null or a non-WindowBaseImpl.");
+            return nil;
+        }
+        
         auto holder = dynamic_cast<INSWindowHolder*>(window);
         auto view = holder->GetNSView();
         return [[AvnRootAccessibilityElement alloc] initWithPeer:peer owner:view];