From 27e4bc578b0783b2d9045fdbb1299e1c86bddce7 Mon Sep 17 00:00:00 2001
From: Siegfried Pammer <siegfriedpammer@gmail.com>
Date: Fri, 20 Jun 2025 22:51:10 +0200
Subject: [PATCH] ref structs cannot be boxed

---
 .../TestCases/Correctness/Conversions.cs                      | 4 ++--
 ICSharpCode.Decompiler/CSharp/Resolver/CSharpConversions.cs   | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/ICSharpCode.Decompiler.Tests/TestCases/Correctness/Conversions.cs b/ICSharpCode.Decompiler.Tests/TestCases/Correctness/Conversions.cs
index 59e94ed4b..040010e8f 100644
--- a/ICSharpCode.Decompiler.Tests/TestCases/Correctness/Conversions.cs
+++ b/ICSharpCode.Decompiler.Tests/TestCases/Correctness/Conversions.cs
@@ -112,7 +112,7 @@ namespace ICSharpCode.Decompiler.Tests.TestCases.Correctness
 
 			Console.WriteLine(ReadZeroTerminatedString("Hello World!".Length));
 			C1.Test();
-#if ROSLYN2 && !NET40
+#if CS120 && !NET40
 			C3.Run();
 #endif
 		}
@@ -204,7 +204,7 @@ namespace ICSharpCode.Decompiler.Tests.TestCases.Correctness
 		}
 	}
 
-#if ROSLYN2 && !NET40
+#if CS120 && !NET40
 	class C3
 	{
 		[InlineArray(4)] struct MyArray { private int elem; }
diff --git a/ICSharpCode.Decompiler/CSharp/Resolver/CSharpConversions.cs b/ICSharpCode.Decompiler/CSharp/Resolver/CSharpConversions.cs
index 6acbeaa49..bc857c9f1 100644
--- a/ICSharpCode.Decompiler/CSharp/Resolver/CSharpConversions.cs
+++ b/ICSharpCode.Decompiler/CSharp/Resolver/CSharpConversions.cs
@@ -779,7 +779,7 @@ namespace ICSharpCode.Decompiler.CSharp.Resolver
 		{
 			// C# 4.0 spec: §6.1.7
 			fromType = NullableType.GetUnderlyingType(fromType);
-			if (fromType.IsReferenceType == false && toType.IsReferenceType == true)
+			if (fromType.IsReferenceType == false && !fromType.IsByRefLike && toType.IsReferenceType == true)
 				return IsSubtypeOf(fromType, toType, 0);
 			else
 				return false;