diff --git a/clang/lib/Frontend/ChainedIncludesSource.cpp b/clang/lib/Frontend/ChainedIncludesSource.cpp
index cb260b4..be99b78 100644
--- a/clang/lib/Frontend/ChainedIncludesSource.cpp
+++ b/clang/lib/Frontend/ChainedIncludesSource.cpp
@@ -43,6 +43,7 @@
   Selector GetExternalSelector(uint32_t ID) override;
   uint32_t GetNumExternalSelectors() override;
   Stmt *GetExternalDeclStmt(uint64_t Offset) override;
+  CXXCtorInitializer **GetExternalCXXCtorInitializers(uint64_t Offset) override;
   CXXBaseSpecifier *GetExternalCXXBaseSpecifiers(uint64_t Offset) override;
   bool FindExternalVisibleDeclsByName(const DeclContext *DC,
                                       DeclarationName Name) override;
@@ -232,6 +233,10 @@
 ChainedIncludesSource::GetExternalCXXBaseSpecifiers(uint64_t Offset) {
   return getFinalReader().GetExternalCXXBaseSpecifiers(Offset);
 }
+CXXCtorInitializer **
+ChainedIncludesSource::GetExternalCXXCtorInitializers(uint64_t Offset) {
+  return getFinalReader().GetExternalCXXCtorInitializers(Offset);
+}
 bool
 ChainedIncludesSource::FindExternalVisibleDeclsByName(const DeclContext *DC,
                                                       DeclarationName Name) {