1 files changed, 5 insertions, 1 deletions

diff --git a/include/clang/Frontend/PreprocessorOptions.h b/include/clang/Frontend/PreprocessorOptions.h
index 7ba7c5c38daba..891359b74784d 100644
--- a/include/clang/Frontend/PreprocessorOptions.h
+++ b/include/clang/Frontend/PreprocessorOptions.h
@@ -36,6 +36,10 @@ public:
   unsigned UsePredefines : 1; /// Initialize the preprocessor with the compiler
                               /// and target specific predefines.
 
+  unsigned DetailedRecord : 1; /// Whether we should maintain a detailed
+                               /// record of all macro definitions and
+                               /// instantiations.
+  
   /// The implicit PCH included at the start of the translation unit, or empty.
   std::string ImplicitPCHInclude;
 
@@ -77,7 +81,7 @@ public:
   }
   
 public:
-  PreprocessorOptions() : UsePredefines(true) {}
+  PreprocessorOptions() : UsePredefines(true), DetailedRecord(false) {}
 
   void addMacroDef(llvm::StringRef Name) {
     Macros.push_back(std::make_pair(Name, false));