From 061223411ac5b545fac24ff7c133bde57334033e Mon Sep 17 00:00:00 2001
From: Jason Malinowski <jason.malinowski@microsoft.com>
Date: Fri, 24 Aug 2018 15:35:27 -0700
Subject: [PATCH] Add missing handling for OperationCanceledException in
 DebuggableWrapper

Without this, analyzers observing cancellation end up re-wrapping the
exception and showing errors in Visual Studio.
---
 src/Microsoft.VisualStudio.Threading.Analyzers/Utils.cs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Microsoft.VisualStudio.Threading.Analyzers/Utils.cs b/src/Microsoft.VisualStudio.Threading.Analyzers/Utils.cs
index 47e36dfd1..96ddbabef 100644
--- a/src/Microsoft.VisualStudio.Threading.Analyzers/Utils.cs
+++ b/src/Microsoft.VisualStudio.Threading.Analyzers/Utils.cs
@@ -36,6 +36,10 @@ internal static Action<SyntaxNodeAnalysisContext> DebuggableWrapper(Action<Synta
                 {
                     handler(ctxt);
                 }
+                catch (OperationCanceledException)
+                {
+                    throw;
+                }
                 catch (Exception ex) when (LaunchDebuggerExceptionFilter())
                 {
                     throw new Exception($"Analyzer failure while processing syntax at {ctxt.Node.SyntaxTree.FilePath}({ctxt.Node.GetLocation()?.GetLineSpan().StartLinePosition.Line + 1},{ctxt.Node.GetLocation()?.GetLineSpan().StartLinePosition.Character + 1}): {ex.GetType()} {ex.Message}. Syntax: {ctxt.Node}", ex);