From 07ee3cddfc192daa67238811d140f7e5aa226fb9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mike=20Kr=C3=BCger?= <mkrueger@xamarin.com>
Date: Thu, 3 Dec 2015 10:05:24 +0100
Subject: Fixed 'Bug 36333 - Xamarin hangs after a few seconds of usage'.

---
 .../CodeIssues/Custom/RedundantAssignmentIssue.cs                     | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'ICSharpCode.NRefactory.CSharp.Refactoring/CodeIssues/Custom/RedundantAssignmentIssue.cs')

diff --git a/ICSharpCode.NRefactory.CSharp.Refactoring/CodeIssues/Custom/RedundantAssignmentIssue.cs b/ICSharpCode.NRefactory.CSharp.Refactoring/CodeIssues/Custom/RedundantAssignmentIssue.cs
index b1d215c5..77a6c943 100644
--- a/ICSharpCode.NRefactory.CSharp.Refactoring/CodeIssues/Custom/RedundantAssignmentIssue.cs
+++ b/ICSharpCode.NRefactory.CSharp.Refactoring/CodeIssues/Custom/RedundantAssignmentIssue.cs
@@ -433,8 +433,10 @@ namespace ICSharpCode.NRefactory.CSharp.Refactoring
 					if (IsInsideTryOrCatchBlock(node.References [0]))
 						continue;
 					ProcessNode(node, true, nodeStates);
+					visitedNodes.Clear ();
 				}
 			}
+			HashSet<VariableReferenceNode> visitedNodes = new HashSet<Refactoring.VariableReferenceNode> ();
 
 			void ProcessNode(VariableReferenceNode node, bool addIssue,
 			                 IDictionary<VariableReferenceNode, NodeState> nodeStates)
@@ -444,6 +446,8 @@ namespace ICSharpCode.NRefactory.CSharp.Refactoring
 
 				bool? reachable = false;
 				foreach (var nextNode in node.NextNodes) {
+					if (!visitedNodes.Add (nextNode))
+						continue;
 					if (nodeStates [nextNode] == NodeState.None)
 						ProcessNode(nextNode, false, nodeStates);
 
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