From 63c18ee922fcb6d6e51c531c9265c369328992bd Mon Sep 17 00:00:00 2001
From: Kevin Hahn <kevin_hahn@sil.org>
Date: Thu, 15 Aug 2024 16:20:16 +0700
Subject: [PATCH] fix test failures where `rootOfPath` was unexpectedly null

---
 src/SIL.LCModel/LinkedFilesRelativePathHelper.cs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/SIL.LCModel/LinkedFilesRelativePathHelper.cs b/src/SIL.LCModel/LinkedFilesRelativePathHelper.cs
index db997587..92681132 100644
--- a/src/SIL.LCModel/LinkedFilesRelativePathHelper.cs
+++ b/src/SIL.LCModel/LinkedFilesRelativePathHelper.cs
@@ -274,6 +274,8 @@ private static string GetPathWithLowercaseRoot(string path)
 			try
 			{
 				var rootOfPath = Path.GetPathRoot(path);
+				// dotnet 8 on linux, when path contains invalid characters rootOfPath will be null
+				if (rootOfPath is null) return path.ToLowerInvariant();
 				return rootOfPath.ToLowerInvariant()
 					+ path.Substring(rootOfPath.Length, path.Length - rootOfPath.Length);
 			}