Some preparatory work for chained PCH. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107915 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 1 deletions

diff --git a/include/clang/Frontend/PCHWriter.h b/include/clang/Frontend/PCHWriter.h
index 1e1ce51e4a..0b0c866bd6 100644
--- a/include/clang/Frontend/PCHWriter.h
+++ b/include/clang/Frontend/PCHWriter.h
@@ -39,6 +39,7 @@ class CXXBaseOrMemberInitializer;
 class LabelStmt;
 class MacroDefinition;
 class MemorizeStatCalls;
+class PCHReader;
 class Preprocessor;
 class Sema;
 class SourceManager;
@@ -257,7 +258,7 @@ public:
   /// \param PPRec Record of the preprocessing actions that occurred while
   /// preprocessing this file, e.g., macro instantiations
   void WritePCH(Sema &SemaRef, MemorizeStatCalls *StatCalls,
-                const char* isysroot);
+                const PCHReader *Chain, const char* isysroot);
 
   /// \brief Emit a source location.
   void AddSourceLocation(SourceLocation Loc, RecordData &Record);