diff --git a/clang/lib/Sema/Sema.cpp b/clang/lib/Sema/Sema.cpp
index 9cfce5a63b1..e24db719049 100644
--- a/clang/lib/Sema/Sema.cpp
+++ b/clang/lib/Sema/Sema.cpp
@@ -142,6 +142,9 @@ public:
 } // end namespace sema
 } // end namespace clang
 
+const unsigned Sema::MaxAlignmentExponent;
+const unsigned Sema::MaximumAlignment;
+
 Sema::Sema(Preprocessor &pp, ASTContext &ctxt, ASTConsumer &consumer,
            TranslationUnitKind TUKind, CodeCompleteConsumer *CodeCompleter)
     : ExternalSource(nullptr), isMultiplexExternalSource(false),