1 files changed, 15 insertions, 0 deletions
diff --git a/include/clang/Lex/PPCallbacks.h b/include/clang/Lex/PPCallbacks.h
index e891e94d4cbc..d74124e9c79b 100644
--- a/include/clang/Lex/PPCallbacks.h
+++ b/include/clang/Lex/PPCallbacks.h
@@ -44,6 +44,14 @@ public:
                            SrcMgr::CharacteristicKind FileType) {
   }
 
+  /// FileSkipped - This callback is invoked whenever a source file is
+  /// skipped as the result of header guard optimization.  ParentFile
+  /// is the file that #includes the skipped file.  FilenameTok is the
+  /// token in ParentFile that indicates the skipped file.
+  virtual void FileSkipped(const FileEntry &ParentFile,
+                           const Token &FilenameTok,
+                           SrcMgr::CharacteristicKind FileType) {
+  }
 
   /// EndOfMainFile - This callback is invoked when the end of the main file is
   /// reach, no subsequent callbacks will be made.
@@ -96,6 +104,13 @@ public:
     Second->FileChanged(Loc, Reason, FileType);
   }
 
+  virtual void FileSkipped(const FileEntry &ParentFile,
+                           const Token &FilenameTok,
+                           SrcMgr::CharacteristicKind FileType) {
+    First->FileSkipped(ParentFile, FilenameTok, FileType);
+    Second->FileSkipped(ParentFile, FilenameTok, FileType);
+  }
+
   virtual void EndOfMainFile() {
     First->EndOfMainFile();
     Second->EndOfMainFile();