From 58263e686cf1a8c5182d4a2fa66235cfd1dabbd4 Mon Sep 17 00:00:00 2001
From: Manish Vasani <mavasani@microsoft.com>
Date: Thu, 19 Feb 2015 15:08:21 -0800
Subject: [PATCH] Minor fix

---
 src/Compilers/Core/Desktop/CommandLine/CommonCompiler.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Compilers/Core/Desktop/CommandLine/CommonCompiler.cs b/src/Compilers/Core/Desktop/CommandLine/CommonCompiler.cs
index e19cc6378a4..ae6b5bf0c3d 100644
--- a/src/Compilers/Core/Desktop/CommandLine/CommonCompiler.cs
+++ b/src/Compilers/Core/Desktop/CommandLine/CommonCompiler.cs
@@ -337,6 +337,7 @@ private int RunCore(TextWriter consoleOutput, CancellationToken cancellationToke
             EventHandler<AnalyzerExceptionDiagnosticArgs> analyzerExceptionDiagnosticsHandler = null;
             if (!analyzers.IsDefaultOrEmpty)
             {
+                analyzerExceptionDiagnostics = new ConcurrentSet<Diagnostic>();
                 analyzerExceptionDiagnosticsHandler = AnalyzerDriverHelper.RegisterAnalyzerExceptionDiagnosticHandler(analyzers, analyzerExceptionDiagnostics.Add);
                 
                 var analyzerManager = new AnalyzerManager();
@@ -448,8 +449,8 @@ private int RunCore(TextWriter consoleOutput, CancellationToken cancellationToke
                 if (analyzerDriver != null)
                 {
                     var analyzerDiagnostics = analyzerDriver.GetDiagnosticsAsync().Result;
-                    AnalyzerDriverHelper.UnregisterAnalyzerExceptionDiagnosticHandler(analyzerExceptionDiagnosticsHandler);
                     var allAnalyzerDiagnostics = analyzerDiagnostics.AddRange(analyzerExceptionDiagnostics);
+                    AnalyzerDriverHelper.UnregisterAnalyzerExceptionDiagnosticHandler(analyzerExceptionDiagnosticsHandler);
 
                     if (PrintErrors(allAnalyzerDiagnostics, consoleOutput))
                     {
-- 
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