From 76e8560b0ef94a6baae4c7dcf467abd94a022580 Mon Sep 17 00:00:00 2001
From: Vladimir Matveev <vladima@microsoft.com>
Date: Tue, 2 Dec 2014 15:04:44 -0800
Subject: [PATCH] fix crash in signature help

---
 src/compiler/types.ts                             | 2 +-
 src/services/utilities.ts                         | 4 ----
 tests/cases/fourslash/signatureHelpWithUnknown.ts | 6 ++++++
 3 files changed, 7 insertions(+), 5 deletions(-)
 create mode 100644 tests/cases/fourslash/signatureHelpWithUnknown.ts

diff --git a/src/compiler/types.ts b/src/compiler/types.ts
index ac94bfae517..db691b09455 100644
--- a/src/compiler/types.ts
+++ b/src/compiler/types.ts
@@ -257,7 +257,7 @@ module ts {
         LastTypeNode = ParenthesizedType,
         FirstPunctuation = OpenBraceToken,
         LastPunctuation = CaretEqualsToken,
-        FirstToken = EndOfFileToken,
+        FirstToken = Unknown,
         LastToken = TypeKeyword,
         FirstTriviaToken = SingleLineCommentTrivia,
         LastTriviaToken = WhitespaceTrivia,
diff --git a/src/services/utilities.ts b/src/services/utilities.ts
index 4a3301312fb..9df0476c105 100644
--- a/src/services/utilities.ts
+++ b/src/services/utilities.ts
@@ -280,10 +280,6 @@ module ts {
     }
 
     function nodeHasTokens(n: Node): boolean {
-        if (n.kind === SyntaxKind.Unknown) {
-            return false;
-        }
-
         // If we have a token or node that has a non-zero width, it must have tokens.
         // Note, that getWidth() does not take trivia into account.
         return n.getWidth() !== 0;
diff --git a/tests/cases/fourslash/signatureHelpWithUnknown.ts b/tests/cases/fourslash/signatureHelpWithUnknown.ts
new file mode 100644
index 00000000000..00a031b2673
--- /dev/null
+++ b/tests/cases/fourslash/signatureHelpWithUnknown.ts
@@ -0,0 +1,6 @@
+/// <reference path='fourslash.ts'/>
+
+////eval(\/*1*/
+
+goTo.marker("1");
+verify.signatureHelpCountIs(1);