{

    TTree *T = new TTree("tree","what a tree");
    T->ReadFile("inputs.txt","x1:x2:x3:x4:x5:x6:x7:x8:x9:x10");
    
    TTreeFormula *pouet = NULL;
    bool crashing =  true;

    if(crashing)
        pouet = new TTreeFormula("toto4","x10+x9-x5+x4+x3-x8-x7+x2+x1+x6",T);
    else
        pouet = new TTreeFormula("toto4","x10+x9",T);

    T->GetEntry(1);
    cout<<"Compile ? "<<pouet->Compile()<<endl;
    cout<<"GetNdata ? "<<pouet->GetNdata()<<endl;
    cout<<"EvalInstance ?  "<<pouet->EvalInstance()<<endl;
    
}