diff --git a/lib/Frontend/ChainedDiagnosticConsumer.cpp b/lib/Frontend/ChainedDiagnosticConsumer.cpp
new file mode 100644
index 0000000..c1d3db8
--- /dev/null
+++ b/lib/Frontend/ChainedDiagnosticConsumer.cpp
@@ -0,0 +1,14 @@
+//===- ChainedDiagnosticConsumer.cpp - Chain Diagnostic Clients -*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Frontend/ChainedDiagnosticConsumer.h"
+
+using namespace clang;
+
+void ChainedDiagnosticConsumer::anchor() { }
diff --git a/lib/Frontend/FrontendAction.cpp b/lib/Frontend/FrontendAction.cpp
index 439a124..6ef07c4 100644
--- a/lib/Frontend/FrontendAction.cpp
+++ b/lib/Frontend/FrontendAction.cpp
@@ -411,6 +411,8 @@
   ParseAST(CI.getSema(), CI.getFrontendOpts().ShowStats);
 }
 
+void PluginASTAction::anchor() { }
+
 ASTConsumer *
 PreprocessorFrontendAction::CreateASTConsumer(CompilerInstance &CI,
                                               StringRef InFile) {