From f3cb77d05c13bee88550c3c06085efc25810d367 Mon Sep 17 00:00:00 2001
From: Jan Jones <janjones@microsoft.com>
Date: Thu, 5 Oct 2023 16:58:09 +0300
Subject: [PATCH] Add missing `in` argument modifier

---
 .../Collections/ImmutableSegmentedListBuilderTest.cs            | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Compilers/Core/CodeAnalysisTest/Collections/ImmutableSegmentedListBuilderTest.cs b/src/Compilers/Core/CodeAnalysisTest/Collections/ImmutableSegmentedListBuilderTest.cs
index 90c8bfb3be889..f369a082b2b58 100644
--- a/src/Compilers/Core/CodeAnalysisTest/Collections/ImmutableSegmentedListBuilderTest.cs
+++ b/src/Compilers/Core/CodeAnalysisTest/Collections/ImmutableSegmentedListBuilderTest.cs
@@ -380,7 +380,7 @@ public void ItemRef()
             var builder = new ImmutableSegmentedList<int>.Builder(list);
 
             ref readonly var safeRef = ref builder.ItemRef(1);
-            ref var unsafeRef = ref Unsafe.AsRef(safeRef);
+            ref var unsafeRef = ref Unsafe.AsRef(in safeRef);
 
             Assert.Equal(2, builder.ItemRef(1));