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Hi Philippe,
In case the problem of Chris is related to the one I mentioned in my previous email,
I can tell you that from the history records of my analysis package I saw that I
removed the explicit closing of the file on 05-apr-2011. So very likely the problem
was introduced in the ROOT version that was released around that time.

Cheers,
Nick.


Nick van Eijndhoven
Professor of Physics
Vrije Universiteit Brussel (VUB-ELEM)
Inter-university Institute for High Energies (IIHE)
Pleinlaan 2, B-1050 Brussel, Belgium
===============================================
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Email : Nick.van.Eijndhoven@vub.ac.be  or : nick@icecube.wisc.edu
Web  : http://www.iihe.ac.be   http://sites.google.com/site/nickveweb
Skype: nickve.nl   Gsm-NL: +31.(0)6.40181589

"In the beginning there was nothing, which exploded".


On Thu, Dec 6, 2012 at 7:16 PM, Philippe Canal <pcanal@fnal.gov> wrote:
Hi Chris,

I can reproduce the problem and will look into it.

Cheers,
Philippe.


On 12/6/12 12:01 PM, Chris Jones wrote:
Hi,

On 06/12/12 17:49, Philippe Canal wrote:
Hi Chris,

Can you provide a complete running example?

You don't need a script ;) Just download

http://www.hep.phy.cam.ac.uk/~jonesc/Collision12-ANNPID.root

open it with ROOT, start a TBrowser and plot a few variables, then quit...

Alternatively, can you try to move the creation of the TFile to *before*
the creation to the TTree (CloneTree(0))?

Thanks, I'll give that a go.

cheers Chris


Cheers,
Philippe.

On 12/6/12 11:23 AM, Chris Jones wrote:
Hi,

I have an application that reads in a TTree from a ROOT file, filters
it based on a set of cuts (in the form of the TCut) using a
TEntryList, and writes out the selected entries to an output file. The
code for this is here

<https://svnweb.cern.ch/trac/lhcb/browser/Erasmus/trunk/Phys/B2D0hD2KsPiPiDalitz/src/applications/FilterNTuple/FilterNTuple_main.cpp>


This all seems to work fine. I can open the filtered root file and
navigate the TTree with a TBrowser etc. However, when I quit I get the
seg. fault below.

The problem seems to come from lines 85-89. The original TTree is in a
directory in the file, "Tuple_BDKstar", and these lines are supposed
to replicate this in the filtered file. They work, but seem to cause
the traceback when reading the output, since if I comment out these
lines (and have the TTree written to the output file root dir.) I
don't get the traceback.

I cannot figure out what I'm doing wrong here, or if this is just a
bug in ROOT. Any suggestions ?

cheers Chris

pciy ~/cmtuser/DaVinci_v33r1/Phys/B2D0hD2KsPiPiDalitz/scripts > root
/r02/lhcb/jonesc/B2D0KstarD2KsPiPiDalitz/V2/Presel/Collision11.root
*******************************************
* *
* W E L C O M E to R O O T *
* *
* Version 5.34/03 27 October 2012 *
* *
* You are welcome to visit our Web site *
* http://root.cern.ch *
* *
*******************************************

ROOT 5.34/03 (tags/v5-34-03@46856, Oct 27 2012, 23:19:27 on
linuxx8664gcc)

CINT/ROOT C/C++ Interpreter version 5.18.00, July 2, 2010
Type ? for help. Commands must be C++ statements.
Enclose multiple statements between { }.
root [0]
Attaching file
/r02/lhcb/jonesc/B2D0KstarD2KsPiPiDalitz/V2/Presel/Collision11.root as
_file0...
root [1] .q

*** Break *** segmentation violation



===========================================================
There was a crash.
This is the entire stack trace of all threads:
===========================================================
#0 0x0000003b70e997b5 in waitpid () from /lib64/libc.so.6
#1 0x0000003b70e3c761 in do_system () from /lib64/libc.so.6
#2 0x00002b8de8c7e580 in TUnixSystem::StackTrace() () from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libCore.so

#3 0x00002b8de8c80e23 in TUnixSystem::DispatchSignals(ESignals) ()
from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libCore.so

#4 <signal handler called>
#5 0x0000000000000061 in ?? ()
#6 0x00002b8de8c3330b in THashTable::FindObject(TObject const*) const ()
from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libCore.so

#7 0x00002b8de8c36d7f in TMap::GetValue(TObject const*) const () from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libCore.so

#8 0x00002b8dedb5fda0 in TFile::SetCacheRead(TFileCacheRead*,
TObject*, TFile::ECacheAction) ()
from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libRIO.so

#9 0x00002b8df046e106 in TTreeCache::~TTreeCache() () from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libTree.so

#10 0x00002b8df046e189 in TTreeCache::~TTreeCache() () from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libTree.so

#11 0x00002b8dedb645f6 in TFile::~TFile() () from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libRIO.so

#12 0x00002b8dedb648a9 in TFile::~TFile() () from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libRIO.so

#13 0x00002b8de8c316e9 in TCollection::GarbageCollect(TObject*) ()
from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libCore.so

#14 0x00002b8de8c35215 in TList::Delete(char const*) () from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libCore.so

#15 0x00002b8de8becaa7 in TROOT::~TROOT() () from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libCore.so

#16 0x0000003b70e337fe in __cxa_finalize () from /lib64/libc.so.6
#17 0x00002b8de8baaaf6 in __do_global_dtors_aux () from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libCore.so

#18 0x0000000000000000 in ?? ()
===========================================================


The lines below might hint at the cause of the crash.
If they do not help you then please submit a bug report at
http://root.cern.ch/bugs. Please post the ENTIRE stack trace
from above as an attachment in addition to anything else
that might help us fixing this issue.
===========================================================
#5 0x0000000000000061 in ?? ()
#6 0x00002b8de8c3330b in THashTable::FindObject(TObject const*) const ()
from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libCore.so

#7 0x00002b8de8c36d7f in TMap::GetValue(TObject const*) const () from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libCore.so

#8 0x00002b8dedb5fda0 in TFile::SetCacheRead(TFileCacheRead*,
TObject*, TFile::ECacheAction) ()
from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libRIO.so

#9 0x00002b8df046e106 in TTreeCache::~TTreeCache() () from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libTree.so

#10 0x00002b8df046e189 in TTreeCache::~TTreeCache() () from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libTree.so

#11 0x00002b8dedb645f6 in TFile::~TFile() () from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libRIO.so

#12 0x00002b8dedb648a9 in TFile::~TFile() () from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libRIO.so

#13 0x00002b8de8c316e9 in TCollection::GarbageCollect(TObject*) ()
from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libCore.so

#14 0x00002b8de8c35215 in TList::Delete(char const*) () from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libCore.so

#15 0x00002b8de8becaa7 in TROOT::~TROOT() () from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libCore.so

#16 0x0000003b70e337fe in __cxa_finalize () from /lib64/libc.so.6
#17 0x00002b8de8baaaf6 in __do_global_dtors_aux () from
/cvmfs/lhcb.cern.ch/lib/lcg/app/releases/ROOT/5.34.03/x86_64-slc5-gcc46-opt/root/lib/libCore.so

#18 0x0000000000000000 in ?? ()
===========================================================




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Content Type: Message
Created from e-mail at 06/12/2012 19:47 by nickve.nl@gmail.com
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