Empty TClonesArrays in custom classes

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Hi Rooters,

our software crashes if I try to fill a custom class which contains a
vaild pointer to an
empty TClonesArray into a TTree.The default constructor of our class is
similar to the
event example that comes with root. The software crashes after the
following calling sequence:

TBranchclones->Fill();
    ->GetEntriesFast();
        ->GetAbsLast();

Is this the supposed behaviour or did we write stupid code ??

Cheers,

Norbert


MTEventRaw::MTEventRaw()
{
  MultWire=MultBgoR=MultAnti=MultT=MultCosmic=MultPlane=0;

  EventNumber = 0;
    if(!gWireList)
    {
      gWireList = new TClonesArray("MTWireRaw", MAX_MULT_WIRE);
    .....
   }

  //initialize Pointers to global lists
  WireList=gWireList;
  BgoListR=gBgoListR;
  AntiList=gAntiList;
  TList=gTList;
  CosmicList=gCosmicList;
}


--

Norbert Danneberg

ETH Zurich - Institute for Particle Physics
  Laboratory for Nuclear Physics          Phone.: +41-1-633-2034
  Hoenggerberg                            Fax.:   +41-1-633-1067
  CH-8093 Zurich


ETH Zurich - Institute for Particle Physics
  Paul Scherrer Institute                 Phone.: +41-56-310-3284
  CH-5232 Villigen PSI                    Fax.:   +41-56-310-4362

email: Norbert.Danneberg@psi.ch

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