I was expecting that ClassDef update of modified classes would solve this kind of problems in the future after ROOT schema evolution implementation.
Recently, TRestHits::fMod and TRestHits::fCh members were removed, affecting few other classes, as TRestG4Hits, TRestTRack, TRestVolumeHits.
When reading a TRestTrackEvent file processed with v2.2.11 we get the following error message.
Warning in <TBranchElement::InitializeOffsets>: No streamer element for branch: fTrack subbranch: fTrack.fHits.fMod
Warning in <TBranchElement::InitializeOffsets>: No streamer element for branch: fTrack subbranch: fTrack.fHits.fCh
Error in <TBufferFile::ReadClassBuffer>: Could not find the StreamerInfo for version 3 of the class TRestHits, object skipped at offset 83
Error in <TBufferFile::CheckByteCount>: object of class TRestHits read too few bytes: 2 instead of 1318
I imagine this error is not a big worry? It is just happening that V2.2.12 is ignoring the content of fMod and fCh? How to avoid getting this error message?
Do we need to have the definition of TRestHits version 3 anywhere?