From b055edd4200b68ead3ef365a3845f1d427b5b555 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 10 Mar 2026 23:15:37 +0000
Subject: [PATCH] Fix NRE in ToolConfigurationDeserializer when
 ridSpecificPackages is null

Co-authored-by: marcpopMSFT <12663534+marcpopMSFT@users.noreply.github.com>
---
 src/Cli/dotnet/ToolPackage/ToolConfigurationDeserializer.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Cli/dotnet/ToolPackage/ToolConfigurationDeserializer.cs b/src/Cli/dotnet/ToolPackage/ToolConfigurationDeserializer.cs
index b7b8e87e55eb..fa7ffc59589f 100644
--- a/src/Cli/dotnet/ToolPackage/ToolConfigurationDeserializer.cs
+++ b/src/Cli/dotnet/ToolPackage/ToolConfigurationDeserializer.cs
@@ -71,7 +71,7 @@ public static ToolConfiguration Deserialize(string pathToXml, IFileSystem fileSy
             .AsReadOnly();
 
         //  Also error out if there are no RID-specific packages and the runner is empty
-        if (string.IsNullOrEmpty(runner) && !ridSpecificPackages.Any())
+        if (string.IsNullOrEmpty(runner) && (ridSpecificPackages == null || !ridSpecificPackages.Any()))
         {
             throw new ToolConfigurationException(
                 string.Format(