From 884f9f05778d4e5dce1af29dc41e14c1fa745289 Mon Sep 17 00:00:00 2001
From: Andrew Arnott <andrew.arnott@microsoft.com>
Date: Thu, 28 Aug 2025 08:09:05 -0600
Subject: [PATCH] Fix failure in design-time builds when working in a clean
 repo

We were seeing errors in the Error List from the inability to copy a dll that had not been built yet.
---
 test/UnreachableAssembly.targets | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/test/UnreachableAssembly.targets b/test/UnreachableAssembly.targets
index ae09558fb..04cc5465d 100644
--- a/test/UnreachableAssembly.targets
+++ b/test/UnreachableAssembly.targets
@@ -8,7 +8,10 @@
   <Target Name="PlaceMissingAssembly" AfterTargets="ResolveReferences">
     <ItemGroup>
       <DivertedProjectReferenceOutputs Include="@(ReferencePath)" Condition=" '%(FileName)' == 'UnreachableAssembly' " />
+      <Content Include="@(DivertedProjectReferenceOutputs)">
+        <Link>hidden\%(FileName)%(Extension)</Link>
+        <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      </Content>
     </ItemGroup>
-    <Copy SourceFiles="@(DivertedProjectReferenceOutputs)" DestinationFolder="$(OutputPath)hidden" SkipUnchangedFiles="true" />
   </Target>
 </Project>