From 08ab517d5276cc261dd9e070a16969c811078a91 Mon Sep 17 00:00:00 2001
From: Vladimir Matveev <vladima@microsoft.com>
Date: Mon, 1 Dec 2014 17:46:56 -0800
Subject: [PATCH] fix crash in getCompletionEntryDetails

---
 src/compiler/checker.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 040b95f3532..d087059d19e 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -4379,7 +4379,7 @@ module ts {
         function getNarrowedTypeOfSymbol(symbol: Symbol, node: Node) {
             var type = getTypeOfSymbol(symbol);
             // Only narrow when symbol is variable of a structured type
-            if (node && (symbol.flags & SymbolFlags.Variable && type.flags & TypeFlags.Structured)) {
+            if (node && node.parent && (symbol.flags & SymbolFlags.Variable && type.flags & TypeFlags.Structured)) {
                 loop: while (true) {
                     var child = node;
                     node = node.parent;