ROOT crashes on Fedora 13


I just installed ROOT from the svn repository on a fresh Fedora 13 machine. It compiled fine and I’m able to execute a few of the demos in the tutorial directory. However, demos.C and benchmarks.C fail (as may others). It appears to be failing at the line:


From the root shell, I can crash ROOT by typing Form("%s\n",“hello world”) as illustrated below.

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  • Version 5.27/03 27 April 2010 *
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ROOT 5.27/03 (trunk@33658, May 29 2010, 16:29:59 on linuxx8664gcc)

CINT/ROOT C/C++ Interpreter version 5.17.00, Dec 21, 2008
Type ? for help. Commands must be C++ statements.
Enclose multiple statements between { }.

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] Form("%s\n",“hello world”)

*** Break *** segmentation violation

There was a crash.
This is the entire stack trace of all threads:

#0 0x00000033310a66de in waitpid () from /lib64/
#1 0x000000333103e6e9 in do_system () from /lib64/
#2 0x00007f9cbaf2a79f in TUnixSystem::StackTrace() () from /usr/local/lib/root/
#3 0x00007f9cbaf2b724 in TUnixSystem::DispatchSignals(ESignals) () from /usr/local/lib/root/
#5 0x0000000000000400 in ?? ()
#6 0x00007f9cbafdcb23 in G__G__Base1__0_244(G__value*, char const*, G__param*, int) () from /usr/local/lib/root/
#7 0x00007f9cba3631c9 in Cint::G__ExceptionWrapper(int ()(G__value, char const*, G__param*, int), G__value*, char*, G__param*, int) () from /usr/local/lib/root/
#8 0x00007f9cba403af1 in G__execute_call () from /usr/local/lib/root/
#9 0x00007f9cba4052f2 in G__call_cppfunc () from /usr/local/lib/root/
#10 0x00007f9cba3e2ea7 in G__interpret_func () from /usr/local/lib/root/
#11 0x00007f9cba3d15cb in G__getfunction () from /usr/local/lib/root/
#12 0x00007f9cba3ae3ba in G__getitem () from /usr/local/lib/root/
#13 0x00007f9cba3b3be1 in G__getexpr () from /usr/local/lib/root/
#14 0x00007f9cba43157a in G__exec_statement () from /usr/local/lib/root/
#15 0x00007f9cba39acf7 in G__exec_tempfile_core () from /usr/local/lib/root/
#16 0x00007f9cba39afce in G__exec_tempfile_fp () from /usr/local/lib/root/
#17 0x00007f9cba43cc7c in G__process_cmd () from /usr/local/lib/root/
#18 0x00007f9cbaef7926 in TCint::ProcessLine(char const*, TInterpreter::EErrorCode*) () from /usr/local/lib/root/
#19 0x00007f9cbae6c861 in TApplication::ProcessLine(char const*, bool, int*) () from /usr/local/lib/root/
#20 0x00007f9cb9cf4528 in TRint::HandleTermInput() () from /usr/local/lib/root/
#21 0x00007f9cbaf2895e in TUnixSystem::CheckDescriptors() () from /usr/local/lib/root/
#22 0x00007f9cbaf28b01 in TUnixSystem::DispatchOneEvent(bool) () from /usr/local/lib/root/
#23 0x00007f9cbaeb9ff6 in TSystem::InnerLoop() () from /usr/local/lib/root/
#24 0x00007f9cbaebb9db in TSystem::Run() () from /usr/local/lib/root/
#25 0x00007f9cbae6aebf in TApplication::Run(bool) () from /usr/local/lib/root/
#26 0x00007f9cb9cf48f5 in TRint::Run(bool) () from /usr/local/lib/root/
#27 0x000000000040106c in main ()

The lines below might hint at the cause of the crash.
If they do not help you then please submit a bug report at Please post the ENTIRE stack trace
from above as an attachment in addition to anything else
that might help us fixing this issue.

#5 0x0000000000000400 in ?? ()

Root >

Other commands such as new TBrowser() work. Any ideas?



I can reproduce this and it is a problem in the rootcint generated assembler code for variable argument functions. Something changed in gcc 4.4.4 that conflicts with the our assembler code. I am working on a fix.

Cheers, Fons.


this issue has been fixed in the ROOT trunk version.

Cheers, Fons.

Thank you Fons!