From 71623b94506f7c2a02a47001eecf5514bbf12c09 Mon Sep 17 00:00:00 2001
From: Brian Robbins <brianrob@microsoft.com>
Date: Mon, 16 Nov 2015 10:59:26 -0800
Subject: [PATCH] Fix ArgumentOutOfRangeException in XplatEventLogger.

---
 src/mscorlib/src/System/Diagnostics/Eventing/XplatEventLogger.cs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/mscorlib/src/System/Diagnostics/Eventing/XplatEventLogger.cs b/src/mscorlib/src/System/Diagnostics/Eventing/XplatEventLogger.cs
index 94166f0..b43b451 100644
--- a/src/mscorlib/src/System/Diagnostics/Eventing/XplatEventLogger.cs
+++ b/src/mscorlib/src/System/Diagnostics/Eventing/XplatEventLogger.cs
@@ -79,6 +79,10 @@ namespace System.Diagnostics.Tracing
                 return String.Empty;
 
             Contract.Assert(payloadName.Count == payload.Count);
+            if(payloadName.Count != payload.Count)
+            {
+                return string.Empty;
+            }
             
             var sb = StringBuilderCache.Acquire();
 
-- 
2.7.4