diff --git a/lib/Basic/SourceManager.cpp b/lib/Basic/SourceManager.cpp
index 6f78ee1..ce9efb0 100644
--- a/lib/Basic/SourceManager.cpp
+++ b/lib/Basic/SourceManager.cpp
@@ -114,6 +114,15 @@
 }
 
 
+/// AddLineNote - Add a line note to the line table for the FileID and offset
+/// specified by Loc.  If FilenameID is -1, it is considered to be
+/// unspecified.
+void SourceManager::AddLineNote(SourceLocation Loc, unsigned LineNo,
+                                int FilenameID) {
+  
+}
+
+
 //===--------------------------------------------------------------------===//
 // Private 'Create' methods.
 //===--------------------------------------------------------------------===//