Add missing include

cms-sw · Oct 18, 2022 · 0e05c66 · 0e05c66
1 parent 407ef28
commit 0e05c66
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/FWCore/Framework/src/TransformerBase.cc b/FWCore/Framework/src/TransformerBase.cc
@@ -7,6 +7,8 @@
 #include "DataFormats/Provenance/interface/BranchDescription.h"
 #include "DataFormats/Provenance/interface/ModuleDescription.h"
 
+#include <optional>
+
 namespace edm {
   void TransformerBase::registerTransformImp(
       ProducerBase& iBase, EDPutToken iToken, const TypeID& id, std::string instanceName, TransformFunction iFunc) {