From d438e0e954c8b3e8d6e29eb1a996f0f86b5d77c1 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Thu, 26 Nov 2020 09:41:19 +0100
Subject: [PATCH] Prevent infinite loop on OpenClipboard.

---
 src/Windows/Avalonia.Win32/ClipboardImpl.cs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Windows/Avalonia.Win32/ClipboardImpl.cs b/src/Windows/Avalonia.Win32/ClipboardImpl.cs
index 0475a9d607..047b7c361f 100644
--- a/src/Windows/Avalonia.Win32/ClipboardImpl.cs
+++ b/src/Windows/Avalonia.Win32/ClipboardImpl.cs
@@ -17,8 +17,12 @@ namespace Avalonia.Win32
 
         private async Task<IDisposable> OpenClipboard()
         {
+            var i = OleRetryCount;
+
             while (!UnmanagedMethods.OpenClipboard(IntPtr.Zero))
             {
+                if (--i == 0)
+                    throw new TimeoutException("Timeout opening clipboard.");
                 await Task.Delay(100);
             }