1 files changed, 4 insertions, 0 deletions
diff --git a/include/clang/Lex/ExternalPreprocessorSource.h b/include/clang/Lex/ExternalPreprocessorSource.h
index 2f9231dc9f22..33e7a2d84b88 100644
--- a/include/clang/Lex/ExternalPreprocessorSource.h
+++ b/include/clang/Lex/ExternalPreprocessorSource.h
@@ -17,6 +17,7 @@
 namespace clang {
 
 class IdentifierInfo;
+class Module;
 
 /// \brief Abstract interface for external sources of preprocessor 
 /// information.
@@ -32,6 +33,9 @@ public:
   
   /// \brief Update an out-of-date identifier.
   virtual void updateOutOfDateIdentifier(IdentifierInfo &II) = 0;
+
+  /// \brief Map a module ID to a module.
+  virtual Module *getModule(unsigned ModuleID) = 0;
 };
   
 }