motorcycle.C crashes at TCanvas::DrawFrame()

ROOT
1

Dear Rooters

I have just downloaded from cvs the new ROOT version (my last version is from Dec 2006),
and tested the tutorial “motorcycle.C”

Sorrowly, it crashes at line 16:

TH1F *vFrame = vC1->DrawFrame(0,-130,60,70);

Can someone tell me what has changed after all these years, so that it crashes?

Below is the crash report.
I am running root on Intel MacBook Pro with MacOS X 10.4.8.

Best regards
Christian

root [0] .x motorcycle.C

*** Break *** bus error
/Volumes/CoreData/ROOT/root/tutorials/graphs/1384: No such file or directory.
Attaching to process 1384.
Reading symbols for shared libraries . done
Reading symbols for shared libraries … done
0x90029a67 in wait4 ()

========== STACKS OF ALL THREADS ==========

Thread 1 (process 1384 thread 0xd03):
#0 0x90029a67 in wait4 ()
#1 0x90046d9b in system ()
#2 0x010aeedd in TUnixSystem::StackTrace ()
#3 0x010b2249 in TUnixSystem::DispatchSignals ()
#4 0x010b237d in SigHandler ()
#5
#6 0x037b1c2f in TPad::DrawFrame ()
#7 0x0112acca in G__G__Base1_133_0_17 ()
#8 0x019301af in Cint::G__ExceptionWrapper ()
#9 0x01a318d4 in G__call_cppfunc ()
#10 0x01a11f1d in G__interpret_func ()
#11 0x01a0049b in G__getfunction ()
#12 0x01ad40d4 in G__getstructmem ()
#13 0x01acb5d2 in G__getvariable ()
#14 0x019b2b58 in G__getitem ()
#15 0x019b4c88 in G__getexpr ()
#16 0x019a0365 in G__define_var ()
#17 0x01ab2fc9 in G__defined_type ()
#18 0x01a61484 in G__exec_statement ()
#19 0x01a131cb in G__interpret_func ()
#20 0x01a00917 in G__getfunction ()
#21 0x019b2cb4 in G__getitem ()
#22 0x019b4c88 in G__getexpr ()
#23 0x01a5bbc8 in G__exec_function ()
#24 0x01a623e6 in G__exec_statement ()
#25 0x01a131cb in G__interpret_func ()
#26 0x01a00917 in G__getfunction ()
#27 0x019b2cb4 in G__getitem ()
#28 0x019b4c88 in G__getexpr ()
#29 0x019cdd00 in G__calc_internal ()
#30 0x01a6fc41 in G__process_cmd ()
#31 0x0108a51e in TCint::ProcessLine ()
#32 0x0100ee3a in TApplication::ProcessFile ()
#33 0x0100d0ba in TApplication::ProcessLine ()
#34 0x000338d1 in TRint::HandleTermInput ()
#35 0x00032fff in TTermInputHandler::Notify ()
#36 0x0004be1a in TTermInputHandler::ReadNotify ()
#37 0x010b257c in TUnixSystem::CheckDescriptors ()
#38 0x010b2cac in TUnixSystem::DispatchOneEvent ()
#39 0x010566dd in TSystem::InnerLoop ()
#40 0x01056681 in TSystem::Run ()
#41 0x0100be36 in TApplication::Run ()
#42 0x000340c7 in TRint::Run ()
#43 0x00002ba3 in main ()
Root > Function DrawSmooth() busy flag cleared
Function motorcycle() busy flag cleared

2

Hi Christian,
in ROOT ChangeLog:

[quote]2007-04-16 10:35 couet Olivier.Couet@cern.ch

* gpad/src/TPad.cxx:
- DrawFrame() change gPad to the current pad to fix some inconsistent
  behavior pointed here: [savannah.cern.ch/bugs/?25542](https://savannah.cern.ch/bugs/?25542)[/quote]

in “motorcycle.C” change line 16:

I hope this help,
Jan

3

Great, thank you, now it works.

Could someone please make the corresponding change in the tutorial, thank you.

Best regards
Christian

4

Thanks Christian for reporting the problem and Jan for fixing it.
Fix now in CVS.

Rene