From 6d3cb82d1c317e527ffb9d149ac79ce1d21bcafd Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 18 Nov 2025 06:58:40 +0000
Subject: [PATCH 1/2] Initial plan


From 5be29c0137ab9d8714f9e9156f416f4adaedbb77 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 18 Nov 2025 07:20:06 +0000
Subject: [PATCH 2/2] Enable runtime async support without library-wide
 compiler flag

Co-authored-by: agocke <515774+agocke@users.noreply.github.com>
---
 src/coreclr/inc/clrconfigvalues.h       | 2 +-
 src/tests/async/Directory.Build.targets | 5 -----
 2 files changed, 1 insertion(+), 6 deletions(-)

diff --git a/src/coreclr/inc/clrconfigvalues.h b/src/coreclr/inc/clrconfigvalues.h
index 21039ef06dbd0b..331d3a506d56ea 100644
--- a/src/coreclr/inc/clrconfigvalues.h
+++ b/src/coreclr/inc/clrconfigvalues.h
@@ -711,7 +711,7 @@ RETAIL_CONFIG_DWORD_INFO(EXTERNAL_EnableRiscV64Zbs,             W("EnableRiscV64
 #endif
 
 // Runtime-async
-RETAIL_CONFIG_DWORD_INFO(UNSUPPORTED_RuntimeAsync, W("RuntimeAsync"), 0, "Enables runtime async method support")
+RETAIL_CONFIG_DWORD_INFO(UNSUPPORTED_RuntimeAsync, W("RuntimeAsync"), 1, "Enables runtime async method support")
 
 ///
 /// Uncategorized
diff --git a/src/tests/async/Directory.Build.targets b/src/tests/async/Directory.Build.targets
index 6804180057690e..f2d39cb6d975ff 100644
--- a/src/tests/async/Directory.Build.targets
+++ b/src/tests/async/Directory.Build.targets
@@ -9,10 +9,5 @@
     <DisableProjectBuild Condition="'$(TestBuildMode)' == 'nativeaot' and '$(TargetArchitecture)' == 'arm64'">true</DisableProjectBuild>
   </PropertyGroup>
 
-  <PropertyGroup>
-    <!-- runtime async testing in main repo NYI -->
-    <DisableProjectBuild Condition="'$(TestBuildMode)' != 'nativeaot'">true</DisableProjectBuild>
-  </PropertyGroup>
-
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.targets, $(MSBuildThisFileDirectory)..))" />
 </Project>