From dd77f2ac503025e7b39e2762e88f839dfcdc1c15 Mon Sep 17 00:00:00 2001
From: Siegfried Pammer <siegfriedpammer@gmail.com>
Date: Sat, 5 Feb 2022 23:15:53 +0100
Subject: [PATCH] Correct documentation and API definition of
 ITypeDefinition.EnumUnderlyingType: it should return null for non-enum types.

---
 ICSharpCode.Decompiler/TypeSystem/ITypeDefinition.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ICSharpCode.Decompiler/TypeSystem/ITypeDefinition.cs b/ICSharpCode.Decompiler/TypeSystem/ITypeDefinition.cs
index b21cc75c0..8574dd681 100644
--- a/ICSharpCode.Decompiler/TypeSystem/ITypeDefinition.cs
+++ b/ICSharpCode.Decompiler/TypeSystem/ITypeDefinition.cs
@@ -43,9 +43,9 @@ namespace ICSharpCode.Decompiler.TypeSystem
 
 		/// <summary>
 		/// For enums: returns the underlying primitive type.
-		/// For all other types: returns <see cref="SpecialType.UnknownType"/>.
+		/// For all other types: returns <see langword="null"/>.
 		/// </summary>
-		IType EnumUnderlyingType { get; }
+		IType? EnumUnderlyingType { get; }
 
 		/// <summary>
 		/// For structs: returns whether this is a readonly struct.