From 9c11734b0bff0d68dca4852dbf80a10fcccd8eb1 Mon Sep 17 00:00:00 2001
From: David Poeschl <davip@microsoft.com>
Date: Mon, 6 Apr 2015 18:29:17 -0700
Subject: [PATCH] Null checks to help diagnose #1795

---
 .../Implementation/InlineRename/InlineRenameSession.cs     | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/EditorFeatures/Core/Implementation/InlineRename/InlineRenameSession.cs b/src/EditorFeatures/Core/Implementation/InlineRename/InlineRenameSession.cs
index e4c1f1471e9..fdae521bae5 100644
--- a/src/EditorFeatures/Core/Implementation/InlineRename/InlineRenameSession.cs
+++ b/src/EditorFeatures/Core/Implementation/InlineRename/InlineRenameSession.cs
@@ -152,8 +152,13 @@ private void InitializeOpenBuffers(SnapshotSpan triggerSpan)
                     var document = _baseSolution.GetDocument(d);
                     SourceText text;
                     Contract.ThrowIfFalse(document.TryGetText(out text));
+                    Contract.ThrowIfNull(text);
 
-                    openBuffers.Add(text.FindCorrespondingEditorTextSnapshot().TextBuffer);
+                    var textSnapshot = text.FindCorrespondingEditorTextSnapshot();
+                    Contract.ThrowIfNull(textSnapshot);
+                    Contract.ThrowIfNull(textSnapshot.TextBuffer);
+
+                    openBuffers.Add(textSnapshot.TextBuffer);
                 }
 
                 foreach (var buffer in openBuffers)
-- 
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