Hi Phil,
Somehow it looks like the MakeClass generated is wrong and leads to
memory corruption (maybe taking a look at the result of tree->Print() and
the content of the result of MakeClass would help).
> Can anyone give any help without having to see the whole file (which is
about
> 2GB)?
Not really ... but ... It might be simple enough to create a subset of your
file:
open the file
orig = (TTree*)_file0->Get("NtpSR");
newfile = new TFile("short.root");
orig->CloneTree(30);
newfile->Write();
Also check that the new shorter file also present the problem.
Alternatively maybe we have access to a common machine (somewhere @ fermi)
where I could read the file.
Cheers,
Philippe
-----Original Message-----
From: owner-roottalk@pcroot.cern.ch
[mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of Philip Symes
Sent: Tuesday, April 06, 2004 5:46 PM
To: roottalk@pcroot.cern.ch
Subject: [ROOT] Seg fault from files accessed using MakeClass but not
from console
Hi ROOTers,
I have a problem which I have seen on ROOT versions 3.10, 4.00/2 and 4.00/3.
I
tried this on Intel P4 machines running RedHat 9 and FermiLinux LTS 3.0.1 (a
RedHat clone).
I run MakeClass on a file, and then try to open that file and use the
skeleton
Loop() function (or any GetEntry() function). ROOT immediately complains of
a
SegV) - see below.
Otherwise, the file is fine, and I can look at data, histograms, etc.
[symes@minos09 fardet]$ root oneMonthsFDEvents.root
*******************************************
* *
* W E L C O M E to R O O T *
* *
* Version 4.00/03 22 March 2004 *
* *
* You are welcome to visit our Web site *
* http://root.cern.ch *
* *
*******************************************
FreeType Engine v2.1.3 used to render TrueType fonts.
Compiled for linux with thread support.
CINT/ROOT C/C++ Interpreter version 5.15.128, Mar 16 2004
Type ? for help. Commands must be C++ statements.
Enclose multiple statements between { }.
root [0]
Attaching file oneMonthsFDEvents.root as _file0...
Warning in <TClass::TClass>: no dictionary for class VldContext is available
Warning in <TClass::TClass>: no dictionary for class VldTimeStamp is
available
Warning in <TClass::TClass>: no dictionary for class RecRecord is available
Warning in <TClass::TClass>: no dictionary for class RecHeader is available
Warning in <TClass::TClass>: no dictionary for class NtpSRRecord is
available
Warning in <TClass::TClass>: no dictionary for class
RecRecordImp<RecCandHeader> is available
Warning in <TClass::TClass>: no dictionary for class RecCandHeader is
available
Warning in <TClass::TClass>: no dictionary for class RecPhysicsHeader is
available
Warning in <TClass::TClass>: no dictionary for class RecDataHeader is
available
Warning in <TClass::TClass>: no dictionary for class NtpSREventSummary is
available
Warning in <TClass::TClass>: no dictionary for class NtpSRPulseHeight is
available
Warning in <TClass::TClass>: no dictionary for class NtpSRPlane is available
Warning in <TClass::TClass>: no dictionary for class NtpSRDate is available
Warning in <TClass::TClass>: no dictionary for class NtpSRShieldSummary is
available
Warning in <TClass::TClass>: no dictionary for class NtpSRCosmicRay is
available
Warning in <TClass::TClass>: no dictionary for class NtpSRDmxStatus is
available
Warning in <TClass::TClass>: no dictionary for class NtpSRShieldStrip is
available
Warning in <TClass::TClass>: no dictionary for class NtpSRStrip is available
Warning in <TClass::TClass>: no dictionary for class NtpSRSlice is available
Warning in <TClass::TClass>: no dictionary for class NtpSRShower is
available
Warning in <TClass::TClass>: no dictionary for class NtpSRStripPulseHeight
is
available
Warning in <TClass::TClass>: no dictionary for class NtpSRVertex is
available
Warning in <TClass::TClass>: no dictionary for class NtpSRTrack is available
Warning in <TClass::TClass>: no dictionary for class NtpSRTrackPlane is
available
Warning in <TClass::TClass>: no dictionary for class NtpSRFiducial is
available
Warning in <TClass::TClass>: no dictionary for class NtpSRTrackTime is
available
Warning in <TClass::TClass>: no dictionary for class NtpSRMomentum is
available
Warning in <TClass::TClass>: no dictionary for class NtpSRFitTrack is
available
Warning in <TClass::TClass>: no dictionary for class NtpSREvent is available
root [1] .ls
TFile** oneMonthsFDEvents.root Persistency file
TFile* oneMonthsFDEvents.root Persistency file
KEY: TTree NtpSR;400 Persistency stream tree
KEY: TTree NtpSR;399 Persistency stream tree
KEY: TProcessID ProcessID0;1 0084dd20-544e-1f84-931a-df80b88bbeef
root [2] NtpSR->MakeC
MakeClass
MakeCode
root [2] NtpSR->MakeClass("test")
Info in <TTreePlayer::MakeClass>: Files: test.h and test.C generated from
TTree: NtpSR
(Int_t)0
root [3] .L test.C
root [4] test s
root [5] s.Loop()
*** Break *** segmentation violation
Generating stack trace...
0xb693f8af in TBranchElement::ReadLeaves(TBuffer&) + 0x603 from
/opt/root/lib/libTree.so
0xb6936ce6 in TBranch::GetEntry(int, int) + 0x1ae from
/opt/root/lib/libTree.so
0xb693e878 in TBranchElement::GetEntry(int, int) + 0x1be from
/opt/root/lib/libTree.so
0xb693e829 in TBranchElement::GetEntry(int, int) + 0x16f from
/opt/root/lib/libTree.so
0xb693e829 in TBranchElement::GetEntry(int, int) + 0x16f from
/opt/root/lib/libTree.so
0xb695caa0 in TTree::GetEntry(int, int) + 0x94 from
/opt/root/lib/libTree.so
0xb6974897 in <unknown> from /opt/root/lib/libTree.so
0xb6ed31a2 in G__call_cppfunc + 0x263 from /opt/root/lib/libCint.so
0xb6ec2cda in G__interpret_func + 0x6e0 from /opt/root/lib/libCint.so
0xb6eaab73 in G__getfunction + 0x12a2 from /opt/root/lib/libCint.so
0xb6f2d6d7 in G__getstructmem + 0x82a from /opt/root/lib/libCint.so
0xb6f277f0 in G__getvariable + 0x4bc from /opt/root/lib/libCint.so
0xb6ea2256 in G__getitem + 0x5c1 from /opt/root/lib/libCint.so
0xb6ea0e9e in G__getexpr + 0x75ce from /opt/root/lib/libCint.so
0xb6ea08af in G__getexpr + 0x6fdf from /opt/root/lib/libCint.so
0xb6eee40f in G__exec_statement + 0x2629 from /opt/root/lib/libCint.so
0xb6eeb473 in G__exec_loop + 0x23e from /opt/root/lib/libCint.so
0xb6eebb2c in G__exec_for + 0x18e from /opt/root/lib/libCint.so
0xb6eedef2 in G__exec_statement + 0x210c from /opt/root/lib/libCint.so
0xb6ec4419 in G__interpret_func + 0x1e1f from /opt/root/lib/libCint.so
0xb6eaab73 in G__getfunction + 0x12a2 from /opt/root/lib/libCint.so
0xb6f2d6d7 in G__getstructmem + 0x82a from /opt/root/lib/libCint.so
0xb6f277f0 in G__getvariable + 0x4bc from /opt/root/lib/libCint.so
0xb6ea2256 in G__getitem + 0x5c1 from /opt/root/lib/libCint.so
0xb6ea0e9e in G__getexpr + 0x75ce from /opt/root/lib/libCint.so
0xb6ee76b0 in G__exec_function + 0x1d5 from /opt/root/lib/libCint.so
0xb6eee194 in G__exec_statement + 0x23ae from /opt/root/lib/libCint.so
0xb6e8a6c7 in G__exec_tempfile_core + 0x2ce from /opt/root/lib/libCint.so
0xb6e8a8a4 in G__exec_tempfile_fp + 0x22 from /opt/root/lib/libCint.so
0xb6ef6062 in G__process_cmd + 0x43fa from /opt/root/lib/libCint.so
0xb719ba01 in TCint::ProcessLine(char const*, TInterpreter::EErrorCode*) +
0xa9 from /opt/root/lib/libCore.so
0xb711bf82 in TApplication::ProcessLine(char const*, bool, int*) + 0x596
from
/opt/root/lib/libCore.so
0xb67cfb21 in TRint::HandleTermInput() + 0x1e1 from
/opt/root/lib/libRint.so
0xb67ce95e in TTermInputHandler::Notify() + 0x24 from
/opt/root/lib/libRint.so
0xb67d03ca in TTermInputHandler::ReadNotify() + 0x12 from
/opt/root/lib/libRint.so
0xb71fe0a0 in TUnixSystem::CheckDescriptors() + 0xe4 from
/opt/root/lib/libCore.so
0xb71fd888 in TUnixSystem::DispatchOneEvent(bool) + 0xfe from
/opt/root/lib/libCore.so
0xb716bd84 in TSystem::InnerLoop() + 0x18 from /opt/root/lib/libCore.so
0xb716bd29 in TSystem::Run() + 0x6f from /opt/root/lib/libCore.so
0xb711c9f1 in TApplication::Run(bool) + 0x2d from /opt/root/lib/libCore.so
0xb67cf619 in TRint::Run(bool) + 0x30f from /opt/root/lib/libRint.so
0x08048861 in main + 0x71 from /opt/root/bin/root.exe
0xb659d748 in __libc_start_main + 0xf8 from /lib/tls/libc.so.6
0x08048761 in _Unwind_Resume + 0x31 from /opt/root/bin/root.exe
Root > Function Loop() busy flag cleared
root [6] .q
BUT
Whben I open oneMonthsFDEvents.root in a ROOT session again, I get:
root [1] NtpSR->GetEntry(33)
(Int_t)14998
root [2] NtpSR->GetEntry(0)
(Int_t)22614
root [3] .L test.C
root [4] test f
root [5] f.fChain->GetEnt
variable "fChain" not defined.
root [5] f.fChain->GetEntry(33)
(Int_t)16126
root [6] f.fChain->GetEntry(0)
*** Break *** segmentation violation
Generating stack trace...
0xb693f8af in TBranchElement::ReadLeaves(TBuffer&) + 0x603 from
/opt/root/lib/libTree.so
etc.
Can anyone give any help without having to see the whole file (which is
about
2GB)?
Cheers,
Phil
--
Philip Symes,
MINOS Group,
Fermilab.
http://minoserv.maps.susx.ac.uk/~symes/
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