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Fix OOB access in case the ROF bin has no tracks #15345

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Fix OOB access in case the ROF bin has no tracks #15345

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3 changes: 3 additions & 0 deletions Detectors/GlobalTracking/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,9 @@ o2_add_library(GlobalTracking
O2::Steer
$<$<BOOL:${ENABLE_UPGRADES}>:O2::ITS3Reconstruction>)

target_compile_options(${targetName} PRIVATE -fsanitize=address -fno-omit-frame-pointer)
target_link_options(${targetName} PRIVATE -fsanitize=address)

o2_target_root_dictionary(GlobalTracking
HEADERS include/GlobalTracking/MatchTPCITSParams.h
include/GlobalTracking/MatchGlobalFwd.h
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6 changes: 5 additions & 1 deletion Detectors/GlobalTracking/src/MatchTPCITS.cxx
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Expand Up @@ -880,7 +880,6 @@ void MatchTPCITS::doMatching(int sec)
int idxMinTPC = timeStartTPC[minROFITS]; // index of 1st cached TPC track within cached ITS ROFrames
auto t2nbs = tpcTimeBin2MUS(mZ2TPCBin * mParams->tpcTimeICMatchingNSigma);
bool checkInteractionCandidates = mUseFT0 && mParams->validateMatchByFIT != MatchTPCITSParams::Disable;

int itsROBin = 0;
for (int itpc = idxMinTPC; itpc < nTracksTPC; itpc++) {
auto& trefTPC = mTPCWork[cacheTPC[itpc]];
Expand All @@ -893,6 +892,11 @@ void MatchTPCITS::doMatching(int sec)
break;
}
int iits0 = timeStartITS[itsROBin];
if (iits0 < 0) {
LOGP(alarm, "doMatching sec={} itpc={} itsROBin={} timeStartITS.size={} iits0={} tmn={} triggered={}",
sec, itpc, itsROBin, timeStartITS.size(), iits0, tmn, mITSTriggered);
continue; // no ITS tracks start at this ROF bin
}
nCheckTPCControl++;
for (auto iits = iits0; iits < nTracksITS; iits++) {
auto& trefITS = mITSWork[cacheITS[iits]];
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