Hi Dirk,
operator [] is overloaded for TClonesArray, so you should have been writing
root [7] ((*tps)[1])->Draw();
instead of yours
root [7] tps[1]->Draw();
hope this will help, Pasha.
--------------------------------------------------------------------------------
Dirk Meier writes:
> When I try to access the next element of
> the TClonesArray I still get segmentation fault:
>
> root [0] TClonesArray* tps = new TClonesArray("TH1F",5);
> root [1] TH1F* dummy0 = new((*tps)[0]) TH1F("bname0","btitle0",40,-20.,200);
> root [2] TH1F* dummy1 = new((*tps)[1]) TH1F("bname1","btitle1",40,-20.,200);
> root [3] tps[0] // just to check whether it is there
> (class TClonesArray)1077780400
> root [4] tps[1]
> (class TClonesArray)1077780448
> root [5] tps[2]
> (class TClonesArray)1077780496
> root [6] tps[0]->Draw(); // now draw the first histogramm of the array
> Warning in <MakeDefCanvas>: creating a default canvas with name c1
>
> // o.k. this works, but drawing the next element gives
>
>
> *** Break *** segmentation violation
>
> ( 0) 0xc1667d40 StackTrace__11TUnixSystemFv + 0x28
> [/afs/cern.ch/na49/library/local/ROOT/hpux10aCC/root/lib/libUnix.sl]
> ( 1) 0xc16667f0 DispatchSignals__11TUnixSystemF8ESignals + 0xd0
> [/afs/cern.ch/na49/library/local/ROOT/hpux10aCC/root/lib/libUnix.sl]
>
>
> thanks for any hints
>
> Dirk
>
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