From a997ea2068a13f836a6fa0c2703c73491630cbf0 Mon Sep 17 00:00:00 2001
From: LordJZ <lordjz@outlook.com>
Date: Thu, 28 Aug 2014 11:49:42 +0400
Subject: [PATCH] Fixed decompiling empty async methods.

Fixes #417 #446 #479
---
 ICSharpCode.Decompiler/ILAst/StateRange.cs | 3 +++
 ICSharpCode.Decompiler/Tests/Async.cs      | 4 ++++
 2 files changed, 7 insertions(+)

diff --git a/ICSharpCode.Decompiler/ILAst/StateRange.cs b/ICSharpCode.Decompiler/ILAst/StateRange.cs
index 3a3dfc2f3..e41b800cb 100644
--- a/ICSharpCode.Decompiler/ILAst/StateRange.cs
+++ b/ICSharpCode.Decompiler/ILAst/StateRange.cs
@@ -212,6 +212,9 @@ namespace ICSharpCode.Decompiler.ILAst
 					case ILCode.Br:
 					case ILCode.Leave:
 						ranges[(ILLabel)expr.Operand].UnionWith(nodeRange);
+						if (i == bodyLength - 1)
+							// no states
+							goto default;
 						break;
 					case ILCode.Brtrue:
 						{
diff --git a/ICSharpCode.Decompiler/Tests/Async.cs b/ICSharpCode.Decompiler/Tests/Async.cs
index 7629dd5e6..b414b21b6 100644
--- a/ICSharpCode.Decompiler/Tests/Async.cs
+++ b/ICSharpCode.Decompiler/Tests/Async.cs
@@ -25,6 +25,10 @@ using System.Threading.Tasks;
 
 public class Async
 {
+	public async void EmptyAsyncMethod()
+	{
+	}
+
 	public async void SimpleVoidMethod()
 	{
 		Console.WriteLine("Before");