1 files changed, 8 insertions, 1 deletions
diff --git a/include/clang/AST/ASTConsumer.h b/include/clang/AST/ASTConsumer.h
index 06113954fc..b01f6c6001 100644
--- a/include/clang/AST/ASTConsumer.h
+++ b/include/clang/AST/ASTConsumer.h
@@ -18,9 +18,10 @@ namespace clang {
   class ASTContext;
   class CXXRecordDecl;
   class DeclGroupRef;
-  class TagDecl;
   class HandleTagDeclDefinition;
+  class PCHDeserializationListener; // layering violation because void* is ugly
   class SemaConsumer; // layering violation required for safe SemaConsumer
+  class TagDecl;
   class VarDecl;
 
 /// ASTConsumer - This is an abstract interface that should be implemented by
@@ -80,6 +81,12 @@ public:
   /// it was actually used.
   virtual void HandleVTable(CXXRecordDecl *RD, bool DefinitionRequired) {}
 
+  /// \brief If the consumer is interested in entities being deserialized from
+  /// PCH, it should return a pointer to a PCHDeserializationListener here.
+  ///
+  /// The return type is void* because PCHDS lives in Frontend.
+  virtual PCHDeserializationListener *GetPCHDeserializationListener() { return 0; }
+
   /// PrintStats - If desired, print any statistics.
   virtual void PrintStats() {}