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[UBSAN][VirtualJetProducer]Avoid creating vector of size zero for jet=1 #46581

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Nov 4, 2024
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[UBSAN][VirtualJetProducer]Avoid creating vector of size zero for jet=1 #46581

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2 changes: 1 addition & 1 deletion RecoJets/JetProducers/plugins/VirtualJetProducer.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -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) {
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