When we read _p1 links, we need to determine which event collection to target.
The target was being set to TruthEvent unless there was a nonzero
event index, in which case it was being set to TruthEvent_PU.
However, in some of those cases, the events contains TruthEvent
but not TruthEvent_PU, the result being that we were making invalid
links that would trip an assertion when used.

Now, make sure that TruthEvent_PU exists before targeting it.
(Yeah, it's inefficient to do this for each link, but since this is only
for reading old data, it's probably not worth doing it differently.)
Fixes a crash seen in the MuonEventAthenaPool tests.

LAr ActiveSensitiveDetectorTool and InactiveSensitiveDetectortool to new style

See merge request atlas/athena!21987

Support TEfficiency in AthenaMonitoring

See merge request atlas/athena!21780

Fixed the retrieval of Event Info from the event store inside `AthenaEventLoopMgr::handle()`

Closes ATLASRECTS-4898

See merge request atlas/athena!21929

Finished the migration of LongLivedParticleDPDMaker to xAOD::EventInfo

See merge request atlas/athena!21930

Migrated 5 tools from the TrkValTools package to xAOD::EventInfo

See merge request atlas/athena!21965

Several PhysicsAnalysis packages migrated to xAOD::EventInfo

See merge request atlas/athena!21968

Update packages:TrigTauRec and TriggerMenu/python/tau from upstream/21.3 to upstream/master via pseudo-merge

See merge request atlas/athena!21771

ComponentAccumulator configuration for SCT digitization

See merge request atlas/athena!21916

Sweeping !21904 from 21.3 to master.
Apply MMSimHit in MM fast digitization (ATLASSIM-3755)

See merge request atlas/athena!21948

Move ConditionStore to default in ComponentAccumulator and standard Athena jobs, remove pycomps from pickle

See merge request atlas/athena!21889

Stewart Martin-Haugh authored 6 years ago and Vakhtang Tsulaia committed 6 years ago

Move ConditionStore to default in ComponentAccumulator and standard Athena jobs, remove pycomps from pickle

PFO Electron links

See merge request atlas/athena!21890

Switch off L1CaloHVScalesMonTool

See merge request atlas/athena!21905

Refactor TileCoolMgr python class

See merge request atlas/athena!21914

Fix TCT failing due to syntax error

See merge request atlas/athena!21935

Sweeping !21722 from 21.0 to master.
21.0-FastCaloSim: Removing LoadFCalGeometryFromFiles function

See merge request atlas/athena!21937

CaloIdentifier: Fix cppcheck warnings.

See merge request atlas/athena!21969

LArIdentifier: Enable thread-safety checker.

See merge request !21970

TileIdentifier: Enable thread-safety static checker.

See merge request !21971

TrigOutputHandling: Fix compilation to clang.

See merge request !21972

Protection against calling G4ThreadInitTool::terminateThread without having called initThread

See merge request !21932

Remove dictionary rule for deleted class ILArBadChanTool

See merge request !21974

Revert "Merge branch 'remove_old_calo' into 'master'"

See merge request !21982

This reverts merge request !21910

TrigConfL1Data: Fix gcc9 warnings.

See merge request atlas/athena!21973

Rewriting geometry tool Config to Component accumulator style

See merge request atlas/athena!21911

Cleanup of commented-out includes of the old EventInfo

See merge request atlas/athena!21966

A fix of SiDetectorElement

See merge request atlas/athena!21907

In C++11, implicit declarations of copy and assignment are deprecated if the
class has a user defined destructor or copy or assignment.  gcc9 now warns
about this by default.
Adjust to avoid the warning.

Streaming operators should live within the namespace of the class they're streaming.
Best not to define stream operators for types in std::; use formatting
functions instead.