UBSAN][VirtualJetProducer]Avoid creating vector of size zero for jets==1

cms-sw · Nov 1, 2024 · baacf9d · baacf9d
1 parent 0205e9f
commit baacf9d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/RecoJets/JetProducers/plugins/VirtualJetProducer.cc b/RecoJets/JetProducers/plugins/VirtualJetProducer.cc
@@ -685,7 +685,7 @@ void VirtualJetProducer::writeJets(edm::Event& iEvent, edm::EventSetup const& iS
   if (!fjJets_.empty()) {
     // Distance between jet centers and overlap area -- for disk-based area calculation
     using RIJ = std::pair<double, double>;
-    std::vector<RIJ> rijStorage(fjJets_.size() * (fjJets_.size() / 2));
+    std::vector<RIJ> rijStorage(fjJets_.size() == 1 ? 1 : fjJets_.size() * (fjJets_.size() >> 1));
     std::vector<RIJ*> rij(fjJets_.size());
     unsigned int k = 0;
     for (unsigned int ijet = 0; ijet < fjJets_.size(); ++ijet) {