From c1141445c3cbc6818336aa19d8957bb7cac29465 Mon Sep 17 00:00:00 2001
From: tmadlener <thomas.madlener@desy.de>
Date: Fri, 30 Jun 2023 14:56:32 +0200
Subject: [PATCH] Only create an internal pointer if necessary

---
 k4FWCore/include/k4FWCore/DataHandle.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/k4FWCore/include/k4FWCore/DataHandle.h b/k4FWCore/include/k4FWCore/DataHandle.h
index 8485fe54..486e35b6 100644
--- a/k4FWCore/include/k4FWCore/DataHandle.h
+++ b/k4FWCore/include/k4FWCore/DataHandle.h
@@ -77,7 +77,9 @@ DataHandle<T>::DataHandle(const std::string& descriptor, Gaudi::DataHandle::Mode
 
     podio_data_service = dynamic_cast<PodioDataSvc*>(m_eds.get());
     if (nullptr != podio_data_service) {
-      m_dataPtr = new T();
+      if constexpr(std::is_integral_v<T> || std::is_floating_point_v<T>) {
+        m_dataPtr = new T();
+      }
     } else {
       // This is the legacy implementation kept for a transition period
       PodioLegacyDataSvc* plds;