William J. Deninger wrote:
> Hello,
>
> I'm having troubles with TTree::Fill() crashing ROOT with the following
> example. I've noticed that if the split option in tree->Branch is set to 0,
> things do run. But I'm partial to having my tree automatically branched if
> possible. I'm I doing something wrong here?
>
> Thanks again for all you help.
>
> William J Deninger
> deninger@uiuc.edu
> //_______________________
> // Test.C
> {
> gROOT->Reset("a");
> TFile *hfile = new TFile("d:/data/test.root","RECREATE","G2073_073");
> hfile->SetCompressionLevel(1);
>
> Simple *raw;
> tree->Branch("test","Simple",&raw,10000,1);
> raw = new Simple;
> tree->Fill();
> hfile->Write();
> }
>
> //_______________________
> // Simple.h
> #include "TObject.h"
> #include "MPXPAIR.h"
> #include "TClonesArray.h"
> class Simple : public TObject
> {
> public:
> Simple();
> virtual ~Simple();
> TClonesArray test;
> ClassDef(Simple,1)
> };
> //_______________________
> // Simple.cpp
> #include "Simple.h"
> ClassImp(Simple)
> Simple::Simple() : test("MPXPAIR", 10)
> {
> }
> Simple::~Simple()
> {
> }
In your program above, you should replace the statement:
Simple *raw;
by
Simple *raw = new Simple;
The point is that the pointer given to TTree::Branch must be initialized.
Rene Brun
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