From a7f96c6a5bd15e9d629cae604ff626b843aa0ad1 Mon Sep 17 00:00:00 2001
From: Siegfried Pammer <siegfriedpammer@gmail.com>
Date: Mon, 18 Sep 2017 20:27:16 +0200
Subject: [PATCH] LockTransform: Use correct index after transforms.

---
 ICSharpCode.Decompiler/IL/Transforms/LockTransform.cs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ICSharpCode.Decompiler/IL/Transforms/LockTransform.cs b/ICSharpCode.Decompiler/IL/Transforms/LockTransform.cs
index 24961dd56..519ee177a 100644
--- a/ICSharpCode.Decompiler/IL/Transforms/LockTransform.cs
+++ b/ICSharpCode.Decompiler/IL/Transforms/LockTransform.cs
@@ -19,6 +19,10 @@ namespace ICSharpCode.Decompiler.IL.Transforms
 				if (!TransformLockRoslyn(block, i))
 					if (!TransformLockV4(block, i))
 						TransformLockV2(block, i);
+				// This happens in some cases:
+				// Use correct index after transformation.
+				if (i >= block.Instructions.Count)
+					i = block.Instructions.Count - 1;
 			}
 		}