Re: [ROOT] crash in TFormLeafInfoClones::GetValue(TLeaf *, int)

From: Walter F.J. Mueller (W.F.J.Mueller@gsi.de)
Date: Fri May 02 2003 - 18:51:39 MEST


Philippe Canal wrote:
> Hi Walter,
> 
> Can you give me access to your ROOT file so that I can reproduce the
> problem? 
> 
>>  tree->Draw("pct.t.amp[0]:pct.t.xo");
>>works, but of course displays a different correlation (usually
>>not the intended one).
> 
> This should be the same as tree->Draw("pct.t.amp[0][]:pct.t.xo"); (which is
> different for the other call you mentioned).  How is it different from what
> you expect?

The problem I wanted to address is that ROOT crashes when one enters

     tree->Draw("pct.amp[0]:pct.xo")

or

     tree->Draw("pct.t.amp[0]:pct.xo")

while it works fine for

     tree->Draw("pct.t.amp[0]:pct.t.xo")

It is true (and I checked) that

     tree->Draw("pct.t.amp[0][]:pct.t.xo")
     tree->Draw("pct.t.amp[0]:pct.t.xo")

give the same result. My remark "usually not the intended one" was a
little misleading and just refected that sometimes people type "amp[0]"
when they want to see "amp[][0]", so they get "amp[0][]" which is a
different thing.


         Cheers,    Walter

--
Walter F.J. Mueller   Mail:  W.F.J.Mueller@gsi.de
GSI,  Abteilung KP3   Phone: +49-6159-71-2766
D-64291 Darmstadt     FAX:   +49-6159-71-2989
WWW:   http://www-kp3.gsi.de/www/kp3/people/mueller.html



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