Problem with ConeTree(0) after event was read

ROOT
1

Hi ROOTers

Here is what happens:

TFile *_file0 = TFile::Open("myFile.root") //open the file
TTree* t = (TTree*) _file0->Get("CollectionTree")  //get tree from file
TTree* newTree =  t->CloneTree(0) //Just checking.  OK, no problem.
Double_t Weight  
TBranch *b_Weight 
t->SetBranchAddress("Weight",&Weight,&b_Weight)  
TTree* newTree2 =  t->CloneTree(0)  //Just checking again.  OK, no problem.
t->GetEntry(3) 
cout << Weight //OK, I get back 0, which is what I expected.
TTree* newTree3 =  t->CloneTree(0)  //HERE IT ALL BREAKS!

Here is the output:

*** Break *** segmentation violation
(no debugging symbols found)
Using host libthread_db library "/lib/tls/libthread_db.so.1".
Attaching to program: /proc/2449/exe, process 2449
(no debugging symbols found)...done.
(no debugging symbols found)...done.
[Thread debugging using libthread_db enabled]
[New Thread -1209039168 (LWP 2449)]
(no debugging symbols found)...done.
(no debugging symbols found)...done.
(no debugging symbols found)...done.
0x007fe7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1  0x00ee44b3 in __waitpid_nocancel () from /lib/tls/libc.so.6
#2  0x00e8d779 in do_system () from /lib/tls/libc.so.6
#3  0x007a298d in system () from /lib/tls/libpthread.so.0
#4  0x002d4adf in TUnixSystem::Exec () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#5  0x002da4ed in TUnixSystem::StackTrace ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#6  0x002d71aa in TUnixSystem::DispatchSignals ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#7  0x002d7238 in SigHandler () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#8  0x002d6485 in sighandler () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#9  <signal handler called>
#10 0x056fdcbf in TBranch::Streamer () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libTree.so
#11 0x057ca5e5 in TBranch::StreamerNVirtual ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libTree.so
#12 0x0576f84d in G__G__Tree_104_0_85 ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libTree.so
#13 0x0088bf14 in Cint::G__CallFunc::Execute ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#14 0x002c929d in TMethodCall::Execute ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#15 0x002cd771 in TStreamerBase::ReadBuffer ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#16 0x0102a5aa in TStreamerInfo::ReadBuffer<char**> ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libRIO.so
#17 0x00fb6f5f in TBufferFile::ReadClassBuffer ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libRIO.so
#18 0x0570a920 in TBranchElement::Streamer ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libTree.so
#19 0x002b3c24 in TClass::Streamer () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#20 0x00fb511e in TBufferFile::ReadObjectAny ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libRIO.so
#21 0x0029e789 in TObjArray::Streamer ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#22 0x0102a157 in TStreamerInfo::ReadBuffer<char**> ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libRIO.so
#23 0x00fb6d0b in TBufferFile::ReadClassBuffer ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libRIO.so
#24 0x0574304c in TTree::Streamer () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libTree.so
#25 0x00fbaf6f in TDirectoryFile::CloneObject ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libRIO.so
#26 0x0023a44e in TObject::Clone () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#27 0x00239871 in TNamed::Clone () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#28 0x0573c19e in TTree::CloneTree () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libTree.so
#29 0x0576542e in G__G__Tree_103_0_29 ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libTree.so
#30 0x0085195b in Cint::G__ExceptionWrapper ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#31 0x009070bd in G__call_cppfunc () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#32 0x008ed3a5 in G__interpret_func () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#33 0x008dc667 in G__getfunction () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#34 0x009953f1 in G__getstructmem () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#35 0x0098d213 in G__getvariable () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#36 0x008c1b56 in G__getitem () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#37 0x008c499f in G__getexpr () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#38 0x008b4384 in G__define_var () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#39 0x0092db53 in G__exec_statement () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#40 0x008afd7c in G__exec_tempfile_core ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#41 0x008b10b7 in G__exec_tempfile_fp ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#42 0x0093d494 in G__process_cmd () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#43 0x002a7ff3 in TCint::ProcessLine ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#44 0x002159fa in TApplication::ProcessLine ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#45 0x0074b1a8 in TRint::HandleTermInput ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libRint.so
#46 0x00749840 in TTermInputHandler::Notify ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libRint.so
#47 0x0074ba56 in TTermInputHandler::ReadNotify ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libRint.so
#48 0x002d346a in TUnixSystem::CheckDescriptors ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#49 0x002d7688 in TUnixSystem::DispatchOneEvent ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#50 0x0026b17c in TSystem::InnerLoop ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#51 0x0026af42 in TSystem::Run () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#52 0x00215ae6 in TApplication::Run () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#53 0x00749fb2 in TRint::Run () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libRint.so
#54 0x08048d36 in main ()
Root >

Is this a mystery?
Thank you,
Georgios

2

Hi Georgios,

I can not reproduce this problem? Is the ‘Weight’ branch part of an object or was it created using the leaflist technique (see the result of t->Print() for the information). Did you try the example with valgrind? Can you provide a complete running example?

Cheers,
Philippe.

3

[quote=“pcanal”]Hi Georgios,

I can not reproduce this problem? Is the ‘Weight’ branch part of an object or was it created using the leaflist technique (see the result of t->Print() for the information). Did you try the example with valgrind? Can you provide a complete running example?

Cheers,
Philippe.[/quote]

Hi Philippe,
Here is the t->Print() output:

t->Print()
******************************************************************************
*Tree    :CollectionTree: CollectionTree                                         *
*Entries :     2350 : Total =       477696631 bytes  File  Size =  198629262 *
*        :          : Tree compression factor =   2.41                       *
******************************************************************************
*Br    0 :RunNumber : RunNumber/I                                            *
*Entries :     2350 : Total  Size=       9968 bytes  File Size  =        171 *
*Baskets :        1 : Basket Size=      32000 bytes  Compression=  55.47     *
*............................................................................*
*Br    1 :EventNumber : EventNumber/I                                        *
*Entries :     2350 : Total  Size=       9978 bytes  File Size  =       4112 *
*Baskets :        1 : Basket Size=      32000 bytes  Compression=   2.31     *
*............................................................................*
*Br    2 :StreamESD_ref : StreamESD_ref/C                                    *
*Entries :     2350 : Total  Size=      12346 bytes  File Size  =       3450 *
*Baskets :        1 : Basket Size=      32000 bytes  Compression=   3.43     *
*............................................................................*
*Br    3 :Stream1_ref : Stream1_ref/C                                        *
*Entries :     2350 : Total  Size=     370652 bytes  File Size  =      17464 *
*Baskets :       12 : Basket Size=      32000 bytes  Compression=  21.19     *
*............................................................................*
*Br    4 :Token     : Token/C                                                *
*Entries :     2350 : Total  Size=     370556 bytes  File Size  =      17414 *
*Baskets :       12 : Basket Size=      32000 bytes  Compression=  21.25     *
*............................................................................*
*Br    5 :Run       : Run/I                                                  *
*Entries :     2349 : Total  Size=       9934 bytes  File Size  =        165 *
*Baskets :        1 : Basket Size=      32000 bytes  Compression=  57.43     *
*............................................................................*
*Br    6 :Event     : Event/I                                                *
*Entries :     2349 : Total  Size=       9944 bytes  File Size  =       4105 *
*Baskets :        1 : Basket Size=      32000 bytes  Compression=   2.31     *
*............................................................................*
*Br    7 :Time      : Time/I                                                 *
*Entries :     2349 : Total  Size=       9939 bytes  File Size  =        155 *
*Baskets :        1 : Basket Size=      32000 bytes  Compression=  61.14     *
*............................................................................*
*Br    8 :LumiBlock : LumiBlock/I                                            *
*Entries :     2349 : Total  Size=       9964 bytes  File Size  =        267 *
*Baskets :        1 : Basket Size=      32000 bytes  Compression=  35.51     *
*............................................................................*
*Br    9 :BCID      : BCID/I                                                 *
*Entries :     2349 : Total  Size=       9939 bytes  File Size  =        155 *
*Baskets :        1 : Basket Size=      32000 bytes  Compression=  61.14     *
*............................................................................*
*Br   10 :LVL1ID    : LVL1ID/I                                               *
*Entries :     2349 : Total  Size=       9949 bytes  File Size  =       4106 *
*Baskets :        1 : Basket Size=      32000 bytes  Compression=   2.31     *
*............................................................................*
*Br   11 :Weight    : Weight/D                                               *
*Entries :     2349 : Total  Size=      19353 bytes  File Size  =        197 *
*Baskets :        1 : Basket Size=      32000 bytes  Compression=  95.81     *
*............................................................................*
*Br   12 :IEvent    : IEvent/I                                               *
*Entries :     2349 : Total  Size=       9949 bytes  File Size  =       3408 *
*Baskets :        1 : Basket Size=      32000 bytes  Compression=   2.78     *
*............................................................................*
*Br   13 :StatusElement : StatusElement/I                                    *
*Entries :     2349 : Total  Size=       9984 bytes  File Size  =        164 *
*Baskets :        1 : Basket Size=      32000 bytes  Compression=  57.84     *
*............................................................................*
*Br   14 :LVL1TriggerType : LVL1TriggerType/I                                *
*Entries :     2349 : Total  Size=       9994 bytes  File Size  =        188 *
*Baskets :        1 : Basket Size=      32000 bytes  Compression=  50.47     *
*............................................................................*
*Br   15 :LVL1TriggerInfo :                                                  *
*Entries :     2349 : Total  Size=     259800 bytes  File Size  =      43887 *
*Baskets :        9 : Basket Size=      32000 bytes  Compression=   5.91     *
*............................................................................*
*Br   16 :LVL2TriggerInfo :                                                  *
*Entries :     2349 : Total  Size=     288108 bytes  File Size  =      39112 *
*Baskets :       10 : Basket Size=      32000 bytes  Compression=   7.35     *
*............................................................................*
*Br   17 :EventFilterInfo :                                                  *
*Entries :     2349 : Total  Size=     288108 bytes  File Size  =      32861 *
*Baskets :       10 : Basket Size=      32000 bytes  Compression=   8.75     *
*............................................................................*
*Br   18 :StreamTagName :                                                    *
*Entries :     2349 : Total  Size=     125098 bytes  File Size  =      10288 *
*Baskets :        5 : Basket Size=      32000 bytes  Compression=  12.11     *
*............................................................................*
*Br   19 :StreamTagType :                                                    *
*Entries :     2349 : Total  Size=     121386 bytes  File Size  =       9872 *
*Baskets :        5 : Basket Size=      32000 bytes  Compression=  12.25     *
*............................................................................*
*Br   20 :Process   : Process/I                                              *
*Entries :     2349 : Total  Size=       9954 bytes  File Size  =        580 *
*Baskets :        1 : Basket Size=      32000 bytes  Compression=  16.34     *
*............................................................................*
*Br   21 :TruthParticleN : TruthParticleN/i                                  *
*Entries :     2349 : Total  Size=       9989 bytes  File Size  =       4828 *
*Baskets :        1 : Basket Size=      32000 bytes  Compression=   1.96     *
*............................................................................*
*Br   22 :TruthParticlePt :                                                  *
*Entries :     2349 : Total  Size=    6842360 bytes  File Size  =    6492425 *
*Baskets :      225 : Basket Size=      32000 bytes  Compression=   1.05     *
*............................................................................*
*Br   23 :TruthParticleEta :                                                 *
*Entries :     2349 : Total  Size=    6842589 bytes  File Size  =    6639546 *
*Baskets :      225 : Basket Size=      32000 bytes  Compression=   1.03     *
*............................................................................*
*Br   24 :TruthParticlePhi :                                                 *
*Entries :     2349 : Total  Size=    6842589 bytes  File Size  =    6627671 *
*Baskets :      225 : Basket Size=      32000 bytes  Compression=   1.03     *
*............................................................................*
*Br   25 :ClusterN  : ClusterN/i                                             *
*Entries :     2349 : Total  Size=       9959 bytes  File Size  =       4612 *
*Baskets :        1 : Basket Size=      32000 bytes  Compression=   2.06     *
*............................................................................*
*Br   26 :ClusterEt :                                                        *
*Entries :     2349 : Total  Size=    5877096 bytes  File Size  =    5595093 *
*Baskets :      192 : Basket Size=      32000 bytes  Compression=   1.05     *
*............................................................................*
*Br   27 :ClusterEta :                                                       *
*Entries :     2349 : Total  Size=    5877292 bytes  File Size  =    5687903 *
*Baskets :      192 : Basket Size=      32000 bytes  Compression=   1.03     *
*............................................................................*
*Br   28 :ClusterPhi :                                                       *
*Entries :     2349 : Total  Size=    5877292 bytes  File Size  =    5690041 *
*Baskets :      192 : Basket Size=      32000 bytes  Compression=   1.03     *
*............................................................................*
*Br   29 :TowerN    : TowerN/i                                               *
*Entries :     2349 : Total  Size=       9949 bytes  File Size  =        166 *
*Baskets :        1 : Basket Size=      32000 bytes  Compression=  57.10     *
*............................................................................*
*Br   30 :TowerEt   :                                                        *
*Entries :     2349 : Total  Size=  120565072 bytes  File Size  =  114475214 *
*Baskets :     2349 : Basket Size=      32000 bytes  Compression=   1.05     *
*............................................................................*
*Br   31 :TowerEta  :                                                        *
*Entries :     2349 : Total  Size=  120567425 bytes  File Size  =    2297322 *
*Baskets :     2349 : Basket Size=      32000 bytes  Compression=  52.46     *
*............................................................................*
*Br   32 :TowerPhi  :                                                        *
*Entries :     2349 : Total  Size=  120567425 bytes  File Size  =    2764773 *
*Baskets :     2349 : Basket Size=      32000 bytes  Compression=  43.59     *
*............................................................................*
*Br   33 :JetConstN_AntiKt4H1TowerJets :                                     *
*Entries :     2349 : Total  Size=      70723 bytes  File Size  =      24719 *
*Baskets :        3 : Basket Size=      32000 bytes  Compression=   2.84     *
*............................................................................*
*Br   34 :JetConstPt_AntiKt4H1TowerJets :                                    *
*Entries :     2349 : Total  Size=    3952136 bytes  File Size  =    3783480 *
*Baskets :      128 : Basket Size=      32000 bytes  Compression=   1.04     *
*............................................................................*
*Br   35 :JetConstEta_AntiKt4H1TowerJets :                                   *
*Entries :     2349 : Total  Size=    3952268 bytes  File Size  =     745562 *
*Baskets :      128 : Basket Size=      32000 bytes  Compression=   5.30     *
*............................................................................*
*Br   36 :JetConstPhi_AntiKt4H1TowerJets :                                   *
*Entries :     2349 : Total  Size=    3952268 bytes  File Size  =     707222 *
*Baskets :      128 : Basket Size=      32000 bytes  Compression=   5.58     *
*............................................................................*
*Br   37 :JetConstN_AntiKt6H1TowerJets :                                     *
*Entries :     2349 : Total  Size=      95500 bytes  File Size  =      36515 *
*Baskets :        4 : Basket Size=      32000 bytes  Compression=   2.60     *
*............................................................................*
*Br   38 :JetConstPt_AntiKt6H1TowerJets :                                    *
*Entries :     2349 : Total  Size=   13918060 bytes  File Size  =   13363749 *
*Baskets :      482 : Basket Size=      32000 bytes  Compression=   1.04     *
*............................................................................*
*Br   39 :JetConstEta_AntiKt6H1TowerJets :                                   *
*Entries :     2349 : Total  Size=   13918546 bytes  File Size  =    2478207 *
*Baskets :      482 : Basket Size=      32000 bytes  Compression=   5.61     *
*............................................................................*
*Br   40 :JetConstPhi_AntiKt6H1TowerJets :                                   *
*Entries :     2349 : Total  Size=   13918546 bytes  File Size  =    2373642 *
*Baskets :      482 : Basket Size=      32000 bytes  Compression=   5.86     *
*............................................................................*
*Br   41 :JetConstN_AntiKt4H1TopoJets :                                      *
*Entries :     2349 : Total  Size=      65136 bytes  File Size  =      19935 *
*Baskets :        3 : Basket Size=      32000 bytes  Compression=   3.24     *
*............................................................................*
*Br   42 :JetConstPt_AntiKt4H1TopoJets :                                     *
*Entries :     2349 : Total  Size=     507829 bytes  File Size  =     461705 *
*Baskets :       17 : Basket Size=      32000 bytes  Compression=   1.10     *
*............................................................................*
*Br   43 :JetConstEta_AntiKt4H1TopoJets :                                    *
*Entries :     2349 : Total  Size=     507850 bytes  File Size  =     469324 *
*Baskets :       17 : Basket Size=      32000 bytes  Compression=   1.08     *
*............................................................................*
*Br   44 :JetConstPhi_AntiKt4H1TopoJets :                                    *
*Entries :     2349 : Total  Size=     507850 bytes  File Size  =     469402 *
*Baskets :       17 : Basket Size=      32000 bytes  Compression=   1.08     *
*............................................................................*
*Br   45 :JetConstN_AntiKt6H1TopoJets :                                      *
*Entries :     2349 : Total  Size=      79372 bytes  File Size  =      25943 *
*Baskets :        3 : Basket Size=      32000 bytes  Compression=   3.04     *
*............................................................................*
*Br   46 :JetConstPt_AntiKt6H1TopoJets :                                     *
*Entries :     2349 : Total  Size=    1173194 bytes  File Size  =    1095652 *
*Baskets :       38 : Basket Size=      32000 bytes  Compression=   1.07     *
*............................................................................*
*Br   47 :JetConstEta_AntiKt6H1TopoJets :                                    *
*Entries :     2349 : Total  Size=    1173236 bytes  File Size  =    1115495 *
*Baskets :       38 : Basket Size=      32000 bytes  Compression=   1.05     *
*............................................................................*
*Br   48 :JetConstPhi_AntiKt6H1TopoJets :                                    *
*Entries :     2349 : Total  Size=    1173236 bytes  File Size  =    1115860 *
*Baskets :       38 : Basket Size=      32000 bytes  Compression=   1.05     *
*............................................................................*
*Br   49 :JetConstN_AntiKt4TruthJets :                                       *
*Entries :     2349 : Total  Size=      66925 bytes  File Size  =      20928 *
*Baskets :        3 : Basket Size=      32000 bytes  Compression=   3.17     *
*............................................................................*
*Br   50 :JetConstPt_AntiKt4TruthJets :                                      *
*Entries :     2349 : Total  Size=     672664 bytes  File Size  =     619656 *
*Baskets :       22 : Basket Size=      32000 bytes  Compression=   1.08     *
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*Br   57 :JetMatchROIEt8 :                                                   *
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*Br   92 :Part7Phi  : Part7Phi/d                                             *
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*Br   97 :TrackPt   :                                                        *
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*Br  100 :TrackCaloEta :                                                     *
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I put the commands in a macro (bugReport.C) and I ran this with valgrind:

valgrind root -l bugReport.C

==2776== Memcheck, a memory error detector.
==2776== Copyright (C) 2002-2005, and GNU GPL'd, by Julian Seward et al.
==2776== Using LibVEX rev 1575, a library for dynamic binary translation.
==2776== Copyright (C) 2004-2005, and GNU GPL'd, by OpenWorks LLP.
==2776== Using valgrind-3.1.1, a dynamic binary instrumentation framework.
==2776== Copyright (C) 2000-2005, and GNU GPL'd, by Julian Seward et al.
==2776== For more details, rerun with: -v
==2776== 
*** DISPLAY not set, setting it to lxplus228.cern.ch:0.0

Welcome to the ATLAS rootlogon.C
root [0] 
Processing bugReport.C...
Warning in <TClass::TClass>: no dictionary for class AttributeListLayout is available
Warning in <TClass::TClass>: no dictionary for class pair<string,string> is available
THE WEIGHT WAS 0

 *** Break *** segmentation violation
(no debugging symbols found)
Using host libthread_db library "/lib/tls/libthread_db.so.1".
Attaching to program: /proc/2777/exe, process 2777
(no debugging symbols found)...done.
(no debugging symbols found)...done.
[Thread debugging using libthread_db enabled]
[New Thread -1208617280 (LWP 2777)]
(no debugging symbols found)...done.
(no debugging symbols found)...done.
(no debugging symbols found)...done.
0x007fe7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1  0x00f654b3 in __waitpid_nocancel () from /lib/tls/libc.so.6
#2  0x00f0e779 in do_system () from /lib/tls/libc.so.6
#3  0x007ac98d in system () from /lib/tls/libpthread.so.0
#4  0x00314adf in TUnixSystem::Exec () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#5  0x0031a4ed in TUnixSystem::StackTrace ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#6  0x003171aa in TUnixSystem::DispatchSignals ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#7  0x00317238 in SigHandler () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#8  0x00316485 in sighandler () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#9  <signal handler called>
#10 0x07a7ecbf in TBranch::Streamer () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libTree.so
#11 0x07b4b5e5 in TBranch::StreamerNVirtual ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libTree.so
#12 0x07af084d in G__G__Tree_104_0_85 ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libTree.so
#13 0x0090cf14 in Cint::G__CallFunc::Execute ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#14 0x0030929d in TMethodCall::Execute ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#15 0x0030d771 in TStreamerBase::ReadBuffer ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#16 0x03f375aa in TStreamerInfo::ReadBuffer<char**> ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libRIO.so
#17 0x03ec3f5f in TBufferFile::ReadClassBuffer ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libRIO.so
#18 0x07a8b920 in TBranchElement::Streamer ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libTree.so
#19 0x002f3c24 in TClass::Streamer () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#20 0x03ec211e in TBufferFile::ReadObjectAny ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libRIO.so
#21 0x002de789 in TObjArray::Streamer ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#22 0x03f37157 in TStreamerInfo::ReadBuffer<char**> ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libRIO.so
#23 0x03ec3d0b in TBufferFile::ReadClassBuffer ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libRIO.so
#24 0x07ac404c in TTree::Streamer () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libTree.so
#25 0x03ec7f6f in TDirectoryFile::CloneObject ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libRIO.so
#26 0x0027a44e in TObject::Clone () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#27 0x00279871 in TNamed::Clone () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#28 0x07abd19e in TTree::CloneTree () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libTree.so
#29 0x07ae642e in G__G__Tree_103_0_29 ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libTree.so
#30 0x008d295b in Cint::G__ExceptionWrapper ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#31 0x009880bd in G__call_cppfunc () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#32 0x0096e3a5 in G__interpret_func () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#33 0x0095d667 in G__getfunction () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#34 0x00a163f1 in G__getstructmem () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#35 0x00a0e213 in G__getvariable () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#36 0x00942b56 in G__getitem () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#37 0x0094599f in G__getexpr () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#38 0x00935384 in G__define_var () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#39 0x009aeb53 in G__exec_statement () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#40 0x00930d7c in G__exec_tempfile_core ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#41 0x009320d3 in G__exec_tempfile () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#42 0x009c27d6 in G__process_cmd () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCint.so
#43 0x002e7ff3 in TCint::ProcessLine ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#44 0x002e812a in TCint::ProcessLineSynch ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#45 0x002575df in TApplication::ExecuteFile ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#46 0x00257902 in TApplication::ProcessFile ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#47 0x0025592a in TApplication::ProcessLine ()
   from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libCore.so
#48 0x0011ce91 in TRint::Run () from /afs/cern.ch/sw/lcg/external/root/5.18.00d/slc4_ia32_gcc34/root/lib/libRint.so
#49 0x08048d36 in main ()
Root > 
root [1] .q
==2776== 
==2776== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 26 from 1)
==2776== malloc/free: in use at exit: 271 bytes in 1 blocks.
==2776== malloc/free: 6 allocs, 5 frees, 11,820 bytes allocated.
==2776== For counts of detected errors, rerun with: -v
==2776== searching for pointers to 1 not-freed blocks.
==2776== checked 209,244 bytes.
==2776== 
==2776== LEAK SUMMARY:
==2776==    definitely lost: 0 bytes in 0 blocks.
==2776==      possibly lost: 0 bytes in 0 blocks.
==2776==    still reachable: 271 bytes in 1 blocks.
==2776==         suppressed: 0 bytes in 0 blocks.
==2776== Reachable blocks (those to which a pointer was found) are not shown.
==2776== To see them, rerun with: --show-reachable=yes

To make it reproducible I would need to send you the ntuple, right? It’s a little big… I can put it on afs temporarily if you have access on lxplus. It’s here (for now):

gchouda@lxplus.cern.ch:~/public/user09.EricFeng.GammaJetBalance.v0.mc08.108001.PythiaPhotonJet1.recon.ESD.e344_s479_r635.AANT._00050.root

Thanks a lot,
Georgios

4

Hi,

The segmentation fault comes from the fact that the file was written with v5.22 which is newer than the version of ROOT you are trying to use (v5.18 ). (You can work around the problem by making sure to read the last entry of the TTree before cloning it).

Cheers,
Philippe.

5

I see…
Thanks a lot!

Is there an easy way to find out the ROOT version some ntuple was created with?
It would be lovely to have something like
t->GetRootVersion();

Thanks in advance,
Georgios

6

see TFile::GetVersion

Rene