Alessio,
I can only repeat once more that pointers passed to TTree::Branch
MUST BE INITIALIZED.
In your case, replace:
TVector *ch;
TVector *hit;
by
TVector *ch=0;
TVector *hit=0;
Rene Brun
Alessio Sarti wrote:
>
> On Fri, 24 Sep 2004, Rene Brun wrote:
>
> > Hi Alessio,
> >
> > Move to a more recent version, eg 4.01/02
>
> After switching to version 4.01/02 I have encountered now a more severe
> problem: at run time my code causes a bad crash.
>
> I'm trying to fill an ntuple with TVectors:
> TVector *ch;
> TVector *hit;
>
> ntpT->Branch("hit","TVector",&hit,32000,0);
> ntpT->Branch("ch", "TVector",&ch ,32000,0);
>
> This code did ran just fine with Version 3.05/07.
> Do I need to use a different syntax?
>
> Thanks again for your help.
> Alessio
>
> >
> > Rene Brun
> >
> > Alessio Sarti wrote:
> > >
> > > Hi all,
> > > I'm trying to merge some ntuples with Version 3.05/07 and I'm having
> > > problems with the produced ntuple.
> > > The merging of the trees shows no problem:
> > > the macro runs fine and I can open the "merged" file.
> > > I can even call the Draw() function on the merged TTree.
> > > But when I try to use the Scan() function or the Show or the Loop one I
> > > have problems.
> > >
> > > The merged ntuple contains TVectors (below I show the content of my
> > > ntuple...)
> > >
> > > //Declaration of leaves types
> > > Int_t evt;
> > > Int_t nadc;
> > > Int_t ntdc;
> > > Int_t ntdc128;
> > > Int_t adcM[8][1];
> > > Int_t tdcM[8][1];
> > > TVector *Shit;
> > > TVector *Sch;
> > >
> > > //List of branches
> > > TBranch *b_evt; //!
> > > TBranch *b_nadc; //!
> > > TBranch *b_ntdc; //!
> > > TBranch *b_ntdc128; //!
> > > TBranch *b_adcM; //!
> > > TBranch *b_tdcM; //!
> > > TBranch *b_Shit; //!
> > > TBranch *b_Sch; //!
> > >
> > > Here's my problem..
> > >
> > > root [1] ((TTree*)gDirectory->Get("data"))->Scan();
> > > ************************************************************************************************************
> > > * Row * evt * nadc * ntdc * ntdc128 * adcM *
> > > tdcM * Shit * Sch *
> > > ************************************************************************************************************
> > >
> > > *** Break *** segmentation violation
> > > Generating stack trace...
> > > /usr/bin/c++filt: unknown demangling style `gnu-new-abi'
> > > Root >
> > >
> > > I've used the merging routine to merge other root files and everything
> > > works fine: am I doing something wrong or there's a problem merging
> > > TVectors?
> > >
> > > Thanks for any advice or help,
> > > alessio
> > >
> > > ______________________________________________________
> > > Alessio Sarti INFN Frascati
> > >
> > > >>>I'm in Frascati<<<
> > >
> > > Cell +39-06-94038166
> > > Office +39-06-94032776
> > > Fax +39-06-94032427
> > >
> > > "... e a un Dio 'fatti il culo' non credere mai..."
> > > (F. De Andre')
> > >
> > > "He was turning over in his mind an intresting new concept in
> > > Thau-dimensional physics which unified time, space, magnetism, gravity
> > > and, for some reason, broccoli". (T. Pratchett: "Pyramids")
> >
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