From 6f217652eb50f1a2d7d6e603781c32fbd62c7835 Mon Sep 17 00:00:00 2001
From: scott snyder <sss@karma>
Date: Fri, 19 Nov 2021 10:24:59 -0500
Subject: [PATCH] MuonCalibExtraTreeEvent: Fix use of uninitialized variable.
Fix use of uninitialized eigen object.
---
.../MuonCalibExtraTreeEvent/src/EventHandler.cxx | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/MuonSpectrometer/MuonCalib/MuonCalibExtraTree/MuonCalibExtraTreeEvent/src/EventHandler.cxx b/MuonSpectrometer/MuonCalib/MuonCalibExtraTree/MuonCalibExtraTreeEvent/src/EventHandler.cxx
index 0a7583e50924..56a76367aa08 100644
--- a/MuonSpectrometer/MuonCalib/MuonCalibExtraTree/MuonCalibExtraTreeEvent/src/EventHandler.cxx
+++ b/MuonSpectrometer/MuonCalib/MuonCalibExtraTree/MuonCalibExtraTreeEvent/src/EventHandler.cxx
@@ -1,5 +1,5 @@
/*
- Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
+ Copyright (C) 2002-2021 CERN for the benefit of the ATLAS collaboration
*/
#include "MuonCalibExtraTreeEvent/EventHandler.h"
@@ -344,6 +344,7 @@ namespace MuonCalib {
build_pars.theta = truth_part->momentum().theta();
build_pars.author = std::abs(truth_part->PDGCode());
build_pars.qOverP = (1. - 2. * (truth_part->PDGCode() < 0)) / (truth_part->momentum().mag());
+ build_pars.cov.setZero();
std::shared_ptr<MuonCalibTrack_E> track_ptr = std::make_shared<MuonCalibTrack_E>(build_pars);
std::map<int, std::set<TruthMdtPtr>>::const_iterator mdt_itr = mdt_hits.find(barcode);
--
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