Hi,
I am using the TTree::MakeSelector method to analyze some data that I have
in a TTree. It seems that when I initially have root compile the selector
code, I get a seg fault. The shared library does get created though, and
further root sessions don't produce any problems. Here is a sample
session:
*******************************************
* *
* W E L C O M E to R O O T *
* *
* Version 3.00/06 3 April 2001 *
* *
* You are welcome to visit our Web site *
* http://root.cern.ch *
* *
*******************************************
FreeType Engine v1.x used to render TrueType fonts.
CINT/ROOT C/C++ Interpreter version 5.14.79, Feb 24 2001
Type ? for help. Commands must be C++ statements.
Enclose multiple statements between { }.
root [0] gSystem->Load("libTestStand.so");
root [1] TFile m3file("batch-1063.root");
root [2] TTree* tree = (TTree*)m3file.Get("T");
root [3] tree->Process("SimpleSelector.C+","fillList");
Creating shared library
/home/kordosky/work/devel/maketree/./SimpleSelector_C.soClass
SimpleSelector: Streamer() not declared
Class SimpleSelector: ShowMembers() not declared
*** Break *** segmentation violation
Root > tree->Process("SimpleSelector.C+","fillList");
Unmodified script has already been compiled and loaded.
Starting SimpleSelector Analysis with Option: fillList
Before Histogram
Before HistRef
After HistRef
<TCanvas::MakeDefCanvas>: created default TCanvas with name c1
root [5] .q
alpha2:/home/kordosky/work/devel/maketree# root
*******************************************
* *
* W E L C O M E to R O O T *
* *
* Version 3.00/06 3 April 2001 *
* *
* You are welcome to visit our Web site *
* http://root.cern.ch *
* *
*******************************************
FreeType Engine v1.x used to render TrueType fonts.
CINT/ROOT C/C++ Interpreter version 5.14.79, Feb 24 2001
Type ? for help. Commands must be C++ statements.
Enclose multiple statements between { }.
root [0] gSystem->Load("libTestStand.so");
root [1] TFile m3file("batch-1063.root");
root [2] TTree* tree = (TTree*)m3file.Get("T");
root [3] tree->Process("SimpleSelector.C+","fillList");
Starting SimpleSelector Analysis with Option: fillList
Before Histogram
Before HistRef
After HistRef
<TCanvas::MakeDefCanvas>: created default TCanvas with name c1
root [4] PostScript file: c1.ps has been created
My tree entry does contain a (split) class called HistRef, which I load
via gSystem->Load(...) above. I include HistRef.h in the SimpleSelector.h
file. Perhaps this is causing some of the problems? I actually don't care
about this one segfault, since I think that during the second session I
am running at compiled speed and the seg fault only seems to happen once.
Anyone got any ideas?
Thanks!
Mike Kordosky
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