From 4daabf350ad705028e0ab8e01aecb0e53555bec3 Mon Sep 17 00:00:00 2001
From: Siegfried Pammer <siegfriedpammer@gmail.com>
Date: Mon, 6 Nov 2017 00:05:21 +0100
Subject: [PATCH] Do not convert to for loop if increment variable is a
 parameter.

---
 ICSharpCode.Decompiler/IL/Transforms/HighLevelLoopTransform.cs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ICSharpCode.Decompiler/IL/Transforms/HighLevelLoopTransform.cs b/ICSharpCode.Decompiler/IL/Transforms/HighLevelLoopTransform.cs
index 28dc9a597..8e025284e 100644
--- a/ICSharpCode.Decompiler/IL/Transforms/HighLevelLoopTransform.cs
+++ b/ICSharpCode.Decompiler/IL/Transforms/HighLevelLoopTransform.cs
@@ -152,6 +152,8 @@ namespace ICSharpCode.Decompiler.IL.Transforms
 					return false;
 				if (!MatchIncrement(secondToLast, out var incrementVariable))
 					return false;
+				if (incrementVariable.Kind == VariableKind.Parameter)
+					return false;
 				if (!condition.Descendants.Any(inst => inst.MatchLdLoc(incrementVariable)))
 					return false;
 				context.Step("Transform to for loop", loop);