From 54c29244f35148b81cea90b7a559cfee4e7db68d Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Wed, 18 Mar 2026 03:34:36 +0000
Subject: [PATCH 1/2] Initial plan


From 236af6ae2666cf0166deaa1ca3547dd97c26e3c6 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Wed, 18 Mar 2026 04:18:56 +0000
Subject: [PATCH 2/2] Fix CreateSubdirectory for root dirs: extend Unix test to
 AnyUnix

Co-authored-by: danmoseley <6385855+danmoseley@users.noreply.github.com>
---
 .../DirectoryInfo/CreateSubdirectory.cs                       | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/libraries/System.Runtime/tests/System.IO.FileSystem.Tests/DirectoryInfo/CreateSubdirectory.cs b/src/libraries/System.Runtime/tests/System.IO.FileSystem.Tests/DirectoryInfo/CreateSubdirectory.cs
index f16bd0c1617f73..bdfe078262cef6 100644
--- a/src/libraries/System.Runtime/tests/System.IO.FileSystem.Tests/DirectoryInfo/CreateSubdirectory.cs
+++ b/src/libraries/System.Runtime/tests/System.IO.FileSystem.Tests/DirectoryInfo/CreateSubdirectory.cs
@@ -244,8 +244,8 @@ public void CreateSubdirectory_RootDriveSubfolder_Windows()
         }
 
         [Fact]
-        [PlatformSpecific(TestPlatforms.Linux)]
-        public void CreateSubdirectory_RootDriveSubfolder_ThrowsUnauthorizedAccessException_Linux()
+        [PlatformSpecific(TestPlatforms.AnyUnix)]
+        public void CreateSubdirectory_RootDriveSubfolder_ThrowsUnauthorizedAccessException_Unix()
         {
             DirectoryInfo rootDirectory = new DirectoryInfo("/");
             string testFolderName = GetTestFileName();