[ROOT] Filtering chains (again!)

From: Antonio SIDOTI (antonio.sidoti@pi.infn.it)
Date: Sat Nov 23 2002 - 12:25:19 MET 

Dear Rooters,
I am following the suggestions described in
http://root.cern.ch/root/roottalk/roottalk02/0481.html to filter out a
chain.
I want to filter in Loop method that has been generated by MakeClass.

void MyClass::Loop(){
  bool pass = false;
  fChain->SetBranchStatus("*",1);  // enable all branches

  Int_t nentries = Int_t(fChain->GetEntries());
  fChain->GetEntry(0);
  TFile *newFile = new TFile("small.root","recreate");
  TTree *newtree = (TTree*)fChain->GetTree()->CloneTree(0);
  for (Int_t jentry=0; jentry<nentries;jentry++) { 
    Int_t ientry = LoadTree(jentry);
     pass = false;
    for(Int_t itk1=0; itk1< numTk; ++itk1){ 
      for(Int_t itk2=itk1+1; itk2< numTk; ++itk2){
	if(itk1==itk2) continue;
        pass = Select(itk1,itk2);
	}
      }
   if(pass){
	cout << "Passed!\n";
      newtree->Fill();
    }
}
 newFile->cd();
 newtree->Write();
}

My problem is that as soon as I try to fill the newtree I got a
Segmaentation violation:

 *** Break *** segmentation violation
Root > Function Loop() busy flag cleared

What I am doing wrong?
Thanks a lot,
Antonio

P.S. I am using  3.03/07

-------------------------------------------------------------
           sidoti   antonio: PostDoc(AdR) - University Pisa and INFN
           e-mail:  antonio.sidoti@pi.infn.it
                    sidoti@fnal.gov
           www:     http://higgs.tn.infn.it/~sidoti/
           Tel:     +39 + 050 880 456
           Fax:     +39 + 050 880 317-318
-------------------------------------------------------------
"A program is a device used to convert data into error messages."

This archive was generated by hypermail 2b29 : Sat Jan 04 2003 - 23:51:20 MET