From 1f53b7cc4f33cca561da7e821a1580e4dd65a996 Mon Sep 17 00:00:00 2001
From: Kristen Schau <47155823+krschau@users.noreply.github.com>
Date: Thu, 30 May 2024 15:14:31 -0400
Subject: [PATCH 1/3] Failfast on debug builds

---
 src/App.xaml.cs    | 4 ++++
 src/DevHome.csproj | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/src/App.xaml.cs b/src/App.xaml.cs
index f9f9c6c5d3..1910eff9ec 100644
--- a/src/App.xaml.cs
+++ b/src/App.xaml.cs
@@ -170,6 +170,10 @@ public App()
 
         UnhandledException += App_UnhandledException;
         AppInstance.GetCurrent().Activated += OnActivated;
+
+#if DEBUG
+        DebugSettings.FailFastOnErrors = true;
+#endif
     }
 
     public void ShowMainWindow()
diff --git a/src/DevHome.csproj b/src/DevHome.csproj
index 7eec2e6d43..6d7cdcdd09 100644
--- a/src/DevHome.csproj
+++ b/src/DevHome.csproj
@@ -156,6 +156,10 @@
     <DefineConstants Condition="'$(BuildRing)'=='Stable'">$(DefineConstants);STABLE_BUILD</DefineConstants>
   </PropertyGroup>
 
+  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
+    <DefineConstants>$(DefineConstants);DEBUG</DefineConstants>
+  </PropertyGroup>
+
   <!-- Third party notice file -->
   <ItemGroup>
     <Content Include="$(SolutionDir)NOTICE.txt">

From b46173f4a8801d164474dbef41ae339d7b7a13fa Mon Sep 17 00:00:00 2001
From: Kristen Schau <47155823+krschau@users.noreply.github.com>
Date: Mon, 17 Jun 2024 16:52:53 -0400
Subject: [PATCH 2/3] Turn off FailFastOnErrors before shutdown

---
 src/MainWindow.xaml.cs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/MainWindow.xaml.cs b/src/MainWindow.xaml.cs
index 99f87a6802..1ba5dc0974 100644
--- a/src/MainWindow.xaml.cs
+++ b/src/MainWindow.xaml.cs
@@ -29,5 +29,9 @@ private void MainWindow_Closed(object sender, WindowEventArgs args)
         Application.Current.GetService<IExtensionService>().SignalStopExtensionsAsync();
         TelemetryFactory.Get<ITelemetry>().Log("DevHome_MainWindow_Closed_Event", LogLevel.Critical, new DevHomeClosedEvent(mainWindowCreated));
         Log.Information("Terminating via MainWindow_Closed.");
+
+        // WinUI bug is causing a crash on shutdown when FailFastOnErrors is set to true (#51773592).
+        // Workaround by turning it off before shutdown.
+        App.Current.DebugSettings.FailFastOnErrors = false;
     }
 }

From 46672bab5df90eed7cd730634108aec9d25849b2 Mon Sep 17 00:00:00 2001
From: Kristen Schau <47155823+krschau@users.noreply.github.com>
Date: Mon, 17 Jun 2024 17:00:18 -0400
Subject: [PATCH 3/3] Move up turning on failfast

---
 src/App.xaml.cs | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/App.xaml.cs b/src/App.xaml.cs
index 1910eff9ec..234b4bfe04 100644
--- a/src/App.xaml.cs
+++ b/src/App.xaml.cs
@@ -79,6 +79,9 @@ private static string RemoveComments(string text)
     public App()
     {
         InitializeComponent();
+#if DEBUG
+        DebugSettings.FailFastOnErrors = true;
+#endif
         _dispatcherQueue = DispatcherQueue.GetForCurrentThread();
 
         Host = Microsoft.Extensions.Hosting.Host.
@@ -170,10 +173,6 @@ public App()
 
         UnhandledException += App_UnhandledException;
         AppInstance.GetCurrent().Activated += OnActivated;
-
-#if DEBUG
-        DebugSettings.FailFastOnErrors = true;
-#endif
     }
 
     public void ShowMainWindow()