From e29b8dbce3f23a8ec6c035a2d37d7dc91409236a Mon Sep 17 00:00:00 2001
From: AnastassiaP <107254966+AnastassiaP@users.noreply.github.com>
Date: Wed, 30 Apr 2025 18:35:08 +0300
Subject: [PATCH] Fix null reference crash when window is closed during
 drag-and-drop (#18760)

---
 native/Avalonia.Native/src/OSX/AvnView.mm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/native/Avalonia.Native/src/OSX/AvnView.mm b/native/Avalonia.Native/src/OSX/AvnView.mm
index b4cd751196..97774eaf53 100644
--- a/native/Avalonia.Native/src/OSX/AvnView.mm
+++ b/native/Avalonia.Native/src/OSX/AvnView.mm
@@ -778,6 +778,8 @@
 
     auto effects = ConvertDragDropEffects(nsop);
     auto parent = _parent.tryGet();
+    if (!parent)
+      return NSDragOperationNone;
     int reffects = (int)parent->TopLevelEvents
             ->DragEvent(type, point, modifiers, effects,
                     CreateClipboard([info draggingPasteboard], nil),