From bdcb8504eac5593091dfa890a7a506732925e625 Mon Sep 17 00:00:00 2001
From: P-A Loizeau <p.-a.loizeau@gsi.de>
Date: Thu, 23 Feb 2023 16:19:23 +0100
Subject: [PATCH] Add safety check for empty match in TrdHitProducerQa, fix
#2736
---
reco/detectors/trd/qa/CbmTrdHitProducerQa.cxx | 1 +
1 file changed, 1 insertion(+)
diff --git a/reco/detectors/trd/qa/CbmTrdHitProducerQa.cxx b/reco/detectors/trd/qa/CbmTrdHitProducerQa.cxx
index 19c1f315ff..09f172d665 100644
--- a/reco/detectors/trd/qa/CbmTrdHitProducerQa.cxx
+++ b/reco/detectors/trd/qa/CbmTrdHitProducerQa.cxx
@@ -166,6 +166,7 @@ void CbmTrdHitProducerQa::Exec(Option_t*)
const CbmMatch* trdDigiMatch = fDigiMan->GetMatch(ECbmModuleId::kTrd, trdHit->GetRefId());
if (nullptr == trdDigiMatch) continue;
+ if (0 == trdDigiMatch->GetNofLinks()) continue; // catch case w/o links as then MatchedLink is invalid
const CbmTrdPoint* trdPoint =
dynamic_cast<CbmTrdPoint*>(fTrdPoints->Get(trdDigiMatch->GetMatchedLink())); // file, event, object
if (nullptr == trdPoint) continue;
--
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