diff --git a/include/clang/Lex/Preprocessor.h b/include/clang/Lex/Preprocessor.h
index 76e3f59..abba959 100644
--- a/include/clang/Lex/Preprocessor.h
+++ b/include/clang/Lex/Preprocessor.h
@@ -770,6 +770,8 @@
 
   void PrintStats();
 
+  size_t getTotalMemory() const;
+
   /// HandleMicrosoftCommentPaste - When the macro expander pastes together a
   /// comment (/##/) in microsoft mode, this method handles updating the current
   /// state, returning the token on the next source line.
diff --git a/lib/Lex/Preprocessor.cpp b/lib/Lex/Preprocessor.cpp
index fdc18f8..48a2388 100644
--- a/lib/Lex/Preprocessor.cpp
+++ b/lib/Lex/Preprocessor.cpp
@@ -225,6 +225,10 @@
   return Macros.begin();
 }
 
+size_t Preprocessor::getTotalMemory() const {
+  return BP.getTotalMemory();
+}
+
 Preprocessor::macro_iterator
 Preprocessor::macro_end(bool IncludeExternalMacros) const {
   if (IncludeExternalMacros && ExternalSource &&
diff --git a/tools/libclang/CIndex.cpp b/tools/libclang/CIndex.cpp
index 49b02c4..3f9d34f 100644
--- a/tools/libclang/CIndex.cpp
+++ b/tools/libclang/CIndex.cpp
@@ -5400,10 +5400,9 @@
   
   // How much memory is being used by the Preprocessor?
   Preprocessor &pp = astUnit->getPreprocessor();
-  const llvm::BumpPtrAllocator &ppAlloc = pp.getPreprocessorAllocator();
   createCXTUResourceUsageEntry(*entries,
                                CXTUResourceUsage_Preprocessor,
-                               ppAlloc.getTotalMemory());
+                               pp.getTotalMemory());
   
   if (PreprocessingRecord *pRec = pp.getPreprocessingRecord()) {
     createCXTUResourceUsageEntry(*entries,