Hi Mark,
Sorry for the delay to answer your mail.
this problem is fixed in 2.23/09
Rene Brun
Mark Boulay wrote:
>
> Hi rooters,
>
> I've just upgraded to root 2.23/08 from version 2.22/10
> (on Linux RH 6.1) and have noticed the following new
> behaviour. When using TTree::SetBranchStatus(), it seems
> that setting *any* branch's status to 0 will force all
> the TClonesArray branches to also be set to 0.
> As an example, I have a TTree with two TClonesArray branches
> PMTs and FECDs. The following code would return a poiner to
> an element of PMTs in 2.22/10
>
> {
> TFile f1("test.root","READ");
> T = (TTree *)f1.Get("T");
> QEvent *event = new QEvent();
> T->SetEventAddress(event);
> T->SetBranchStatus("PMTs.Pmthl",0);
> T->GetEvent(0);
> TPMT * pmt = event->GetPMTs()->At(0)
> (class TObject*)0x7deda8
> }
> where the member GetPMTs() returns a pointer to the TClonesArray
> PMTs.
>
> If I set any branch status to 0, the above code with root
> 2.23/08 returns pmt = NULL. If I then use
> TTree::SetBranchStatus("*",1) all is fine.
>
> Regards,
> Mark.
>
>
> =================================================================
> = =
> = Mark Boulay =
> = Department of Physics phone/voice mail: (613) 533-6861 =
> = Queen's University fax: (613) 533-6813 =
> = Kingston, Ontario email: mgb@sno.phy.queensu.ca =
> = Canada, K7L 3N6 Office 121 (c) =
> = =
> =================================================================
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