From 425d1ae6973859cb7eb217f1934a4e9bc601fd5c Mon Sep 17 00:00:00 2001
From: Siegfried Pammer <siegfriedpammer@gmail.com>
Date: Sat, 21 Oct 2017 16:57:50 +0200
Subject: [PATCH] Fix ArgumentOutOfRangeException in CopyPropagation while
 decompiling System.Security.Cryptography.CryptoStream.ReadAsyncInternal from
 mscorlib.v4

---
 ICSharpCode.Decompiler/IL/Transforms/CopyPropagation.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ICSharpCode.Decompiler/IL/Transforms/CopyPropagation.cs b/ICSharpCode.Decompiler/IL/Transforms/CopyPropagation.cs
index 91a79c6c4..1ef40d116 100644
--- a/ICSharpCode.Decompiler/IL/Transforms/CopyPropagation.cs
+++ b/ICSharpCode.Decompiler/IL/Transforms/CopyPropagation.cs
@@ -51,7 +51,7 @@ namespace ICSharpCode.Decompiler.IL.Transforms
 						// dead store to stack
 						if (copiedExpr.Flags == InstructionFlags.None) {
 							// no-op -> delete
-							context.Step("remove dead store to stack: no-op -> delete", block.Instructions[i - 1]);
+							context.Step("remove dead store to stack: no-op -> delete", block.Instructions[i]);
 							block.Instructions.RemoveAt(i--);
 						} else {
 							// evaluate the value for its side-effects