Symbol G__exception is not defined in current scope

ROOT
1

dear all,
I was running a macro aliroot (the ROOT-based ALICE offline simulation framework) and i got this error:

Error: Symbol G__exception is not defined in current scope MakeRoby.C:20:
Error: type G__exception not defined FILE:/home/preghenella/AliRoby.2007/TEST-AliTOFRawStream/10000-Pions/Gen-00/./MakeRoby.C LINE:20

line 20 is just a statement to run the simulation framework.
Following a previous discussion on this kind of error I attached gdb to the main process (aliroot) and wrote on gdb line “catch throw”.
When the error appeared gdb said:

[Switching to Thread -1488389920 (LWP 17496)]

Catchpoint 1 (exception thrown)
0xa768c605 in __cxa_throw () from /usr/lib/libstdc++.so.6

Actualy now I don’t really know how to proceed in debugging this error. Please help me.
I was running the process on a Linux (kernel 2.6.9-42.0.10.EL.cernsmp) system with
ROOT v5.15/07.

thanks
roberto

2

See root.cern.ch/phpBB2/viewtopic.php?t=4713

Philippe

3

that’s the point I started from. the problem’s that now I dont’t know what should I do with gdb’s answer

4

Hi,
the runtime throws an exception if something goes wrong. GDB (with “catch throw”) should point you to where that happens. You could post the part of the code + the values of variables + the GDB backtrace if you need help to figure out what’s wrong.
Axel.

5

it’s quite hard for me to figure out in which part of the code this happens (the code is really really big, and I didn’t write it). I’ll try to post the problem to the AliRoot mailing list.
thanks
roberto

6

ok, I probably understood the problem. There should be an out-of-memory exception and I think I found the readon why.
roberto

7

Hello,

I am new to ROOT Talk and I am having problems running monte carlo simulations in aliroot, I was wondering if
there is a better, more specific, place to post my inquiries about aliroot?

thank you, AMP

8

See aliceinfo.cern.ch/Offline/

Philippe.