From b25c2743ca2cbcb925756c37ff6bfd74396bc43b Mon Sep 17 00:00:00 2001
From: Andrew Stanton-Nurse <andrew@andrewnurse.net>
Date: Thu, 10 Dec 2015 12:19:24 -0800
Subject: [PATCH] fix a bug in the default TFM define generation

---
 .../Utilities/FrameworksExtensions.cs                         | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Microsoft.DotNet.ProjectModel/Utilities/FrameworksExtensions.cs b/src/Microsoft.DotNet.ProjectModel/Utilities/FrameworksExtensions.cs
index 2c5fcac6e..6cbab643c 100644
--- a/src/Microsoft.DotNet.ProjectModel/Utilities/FrameworksExtensions.cs
+++ b/src/Microsoft.DotNet.ProjectModel/Utilities/FrameworksExtensions.cs
@@ -22,6 +22,10 @@ namespace NuGet.Frameworks
             }
 
             var versionPart = original.Substring(index);
+            if (versionPart.Length >= 2)
+            {
+                return original;
+            }
 
             // Assume if the version part was preserved then leave it alone
             if (versionPart.IndexOf('.') != -1)