Crash during filling histograms

[annask]

---

ROOT Version: Not Provided 6
Platform: Not Provided Ubuntu 6.4.0-8ubuntu1
Compiler: Not Provided__gcc version 6.4.0 20171010

Dear colleagues,

while filling histograms I’got the message about the crash. What can be the reason?

Thank you in advance,
Anna

 *** Break *** segmentation violation

===========================================================
There was a crash.
This is the entire stack trace of all threads:
===========================================================
#0  0x00007fc33d7468fa in __GI___waitpid (pid=22973, stat_loc=stat_loc
entry=0x7ffc3d198898, options=options
entry=0) at ../sysdeps/unix/sysv/linux/waitpid.c:29
#1  0x00007fc33d6b59cb in do_system (line=<optimized out>) at ../sysdeps/posix/system.c:148
#2  0x00007fc33e30e678 in TUnixSystem::Exec (shellcmd=<optimized out>, this=0x5575c7c6b7c0) at /home/anna/WORK/PandaRoot/fairsoft_may18/tools/root/core/unix/src/TUnixSystem.cxx:2118
#3  TUnixSystem::StackTrace (this=0x5575c7c6b7c0) at /home/anna/WORK/PandaRoot/fairsoft_may18/tools/root/core/unix/src/TUnixSystem.cxx:2412
#4  0x00007fc33e310d0c in TUnixSystem::DispatchSignals (this=0x5575c7c6b7c0, sig=kSigSegmentationViolation) at /home/anna/WORK/PandaRoot/fairsoft_may18/tools/root/core/unix/src/TUnixSystem.cxx:3643
#5  <signal handler called>
#6  0x00007fc33dd60e98 in std::istream::operator>>(int&) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#7  0x00007fc33ea4ba77 in ?? ()
#8  0x0000000000000000 in ?? ()
===========================================================

[couet]

@annask

What can be the reason?

We would need a small reproducer to help you.

[annask]

Do you mean the program?
It was working well at the statistics below 10000000 events. But after increasing the statistics to 100000000 it crashed at 38000000.

[annask]

I’m sorry. Seems I found the problem myself - it was in dimentionality array that I filled in. It was too small. Thank you