Re: Funny ROOT session: *** Break *** segmentation violation

Well, as I told it's a funny, rather artificial session. However nothing illegal had been done... The segfault observed may indicate a bug which can potentially appear in other situations.

P.S. I did get to ".q" as you see... Have tried the same ROOT version?

John Idarraga wrote:
> I get the segfault at the moment I try to do P.Draw ... I'm wondering
> if you can actually do this .... Draw a Pad all empty ... I mean its
> contructor has a lot of arguments.
>
> John Idarraga
> UMontreal
>
> Vassili Maroussov a écrit :
>> Dear ROOTers,
>>
>> what can be a reason for a segmentation violation in the funny ROOT
>> session below?
>>
>> Regards,
>>
>> Vassili
>> _________________________________________
>>
>> [pcmspur5] ~/FieldMapping/PlainCPP > root -l
>>
>> Welcome to the ROOT tutorials
>>
>>
>> Type ".x demos.C" to get a toolbar from which to execute the demos
>>
>> Type ".x demoshelp.C" to see the help window
>>
>> ==> Many tutorials use the file hsimple.root produced by hsimple.C
>> ==> It is recommended to execute hsimple.C before any other script
>>
>> root [0] gROOT->GetVersion()
>> (const char* 0x8266620)"5.18/00"
>> root [1] TPad P
>> root [2] TCanvas C
>> root [3] P.Draw()
>> root [4] .q
>>
>> *** Break *** segmentation violation
>> (no debugging symbols found)
>> Using host libthread_db library "/lib/tls/libthread_db.so.1".
>> Attaching to program: /proc/16349/exe, process 16349
>> (no debugging symbols found)...done.
>> (no debugging symbols found)...done.
>> [Thread debugging using libthread_db enabled]
>> [New Thread -1218574560 (LWP 16349)]
>> (no debugging symbols found)...done.
>> (no debugging symbols found)...done.
>> (no debugging symbols found)...done.
>> (no debugging symbols found)...done.
>> (no debugging symbols found)...done.
>> (no debugging symbols found)...done.
>> (no debugging symbols found)...done.
>> (no debugging symbols found)...done.
>> (no debugging symbols found)...done.
>>
>> 0x00df951e in __waitpid_nocancel () from /lib/tls/libc.so.6
>> Thread 1 (Thread -1218574560 (LWP 16349)):
>> #0 0x00df951e in __waitpid_nocancel () from /lib/tls/libc.so.6
>> #1 0x00d8e1d4 in do_system () from /lib/tls/libc.so.6
>> #2 0x00866d7f in system () from /lib/tls/libpthread.so.0
>> #3 0x002d4f8f in TUnixSystem::Exec () from
>> /cern/ROOT/5.18/lib/libCore.so
>> #4 0x002d53af in TUnixSystem::StackTrace () from
>> /cern/ROOT/5.18/lib/libCore.so
>> #5 0x002d323d in TUnixSystem::DispatchSignals () from
>> /cern/ROOT/5.18/lib/libCore.so
>> #6 0x002d136d in SigHandler () from /cern/ROOT/5.18/lib/libCore.so
>> #7 0x002d7d31 in sighandler () from /cern/ROOT/5.18/lib/libCore.so
>> #8 <signal handler called>
>> #9 0x006dc3e8 in vtable for TString () from
>> /cern/ROOT/5.18/lib/libCore.so
>> #10 0x00cd675a in TPad::Close () from /cern/ROOT/5.18/lib/libGpad.so
>> #11 0x00cd4e14 in TPad::~TPad$delete () from
>> /cern/ROOT/5.18/lib/libGpad.so
>> #12 0x00cffe18 in G__G__GPad_147_0_228 () from
>> /cern/ROOT/5.18/lib/libGpad.so
>> #13 0x0093562b in Cint::G__ExceptionWrapper () from
>> /cern/ROOT/5.18/lib/libCint.so
>> #14 0x009de44d in G__call_cppfunc () from /cern/ROOT/5.18/lib/libCint.so
>> #15 0x009ccb2d in G__interpret_func () from
>> /cern/ROOT/5.18/lib/libCint.so
>> #16 0x009b6ee0 in G__getfunction () from /cern/ROOT/5.18/lib/libCint.so
>> #17 0x00a2220f in G__destroy_upto_vararray () from
>> /cern/ROOT/5.18/lib/libCint.so
>> #18 0x00a2253b in G__destroy_upto () from /cern/ROOT/5.18/lib/libCint.so
>> #19 0x00a230af in G__scratch_globals_upto () from
>> /cern/ROOT/5.18/lib/libCint.so
>> #20 0x002a7745 in TCint::ResetGlobals () from
>> /cern/ROOT/5.18/lib/libCore.so
>> #21 0x00216e1d in TApplication::ProcessLine () from
>> /cern/ROOT/5.18/lib/libCore.so
>> #22 0x00781009 in TRint::HandleTermInput () from
>> /cern/ROOT/5.18/lib/libRint.so
>> #23 0x0077f858 in TTermInputHandler::Notify () from
>> /cern/ROOT/5.18/lib/libRint.so
>> #24 0x00781a9e in TTermInputHandler::ReadNotify () from
>> /cern/ROOT/5.18/lib/libRint.so
>> #25 0x002d35d3 in TUnixSystem::CheckDescriptors () from
>> /cern/ROOT/5.18/lib/libCore.so
>> #26 0x002d2960 in TUnixSystem::DispatchOneEvent () from
>> /cern/ROOT/5.18/lib/libCore.so
>> #27 0x0026c200 in TSystem::InnerLoop () from
>> /cern/ROOT/5.18/lib/libCore.so
>> #28 0x0026bfda in TSystem::Run () from /cern/ROOT/5.18/lib/libCore.so
>> #29 0x00217f6a in TApplication::Run () from
>> /cern/ROOT/5.18/lib/libCore.so
>> #30 0x0078095a in TRint::Run () from /cern/ROOT/5.18/lib/libRint.so
>> #31 0x080488be in main ()
>> Root > .q
>>
>> This is the end of ROOT -- Goodbye
>>
>> [pcmspur5] ~/FieldMapping/PlainCPP >
>>
>
Received on Thu Feb 21 2008 - 23:23:07 CET