Dear experts,
I have encountered an issue with reading certain kinds of std::map objects from a TFile in PyROOT. For example, I have been trying to save a std::map<int, std::vector< int> > to a TFile in one of my ROOT c++ scripts, and it writes correctly, but I am unable to analyze that object using python/cppyy in the normal way – instead the only way I have found to get that object into python successfully is to read it through TBufferJSON::ToJSON and then to use python’s json package to parse that – doing this, it seems that the object is fine in the ROOT file, but something in PyROOT/cppyy is not able to handle it as expected from the documentation.
As a demonstration, I made a couple of minimal scripts to reproduce the problem.
make-map.py (335 Bytes)
This first script creates a std::vector<int, std::vector< int> > using cppyy.gbl.std and saves it to a TFile. The file looks healthy to me. (I have done the same thing in plain ROOT/C++ and it makes no difference.)
The second script opens that file successfully, but the map object inside causes issues.
read-map.py (674 Bytes)
The script prints the map with TBufferJSON as expected, but accessing what’s in the map using basic methods, or the more fancy method demonstrated in the cppyy docs [1], causes segfaults. I have included several lines that don’t work as comments in the script, but as is, it will only try to run (and segfault on) the method referenced in [1].
I paste the output of this test below [2].
Could this be fixed? It would be very useful for me to be able to work with objects like this without going through TBufferJSON.
Thanks,
John
[1] Pythonizations — cppyy 2.0.0 documentation
[2]
johakala@lxplus793 ~/pyroot-test # source /cvmfs/sft.cern.ch/lcg/views/LCG_101/x86_64-centos7-gcc11-dbg/setup.sh
johakala@lxplus793 ~/pyroot-test # root --version
ROOT Version: 6.24/06
Built for linuxx8664gcc on Sep 02 2021, 14:20:23
From tags/v6-24-06@v6-24-06
johakala@lxplus793 ~/pyroot-test # python --version
Python 3.9.6
johakala@lxplus793 ~/pyroot-test # python make-map.py
{ 1000 => { 5, 7, 9 } }
johakala@lxplus793 ~/pyroot-test # python read-map.py
using r.TBufferJSON.ToJSON:
[{"$pair" : "pair<int,vector<int> >", "first" : 1000, "second" : [5, 7, 9]}]
<cppyy.gbl._Rb_tree_iterator<pair<const int,vector<int> > > object at 0x71655f0>
108562352
*** Break *** segmentation violation
===========================================================
There was a crash (kSigSegmentationViolation).
This is the entire stack trace of all threads:
===========================================================
Thread 2 (Thread 0x7f97d125b700 (LWP 19070) "python"):
#0 0x00007f97f48b0de2 in pthread_cond_timedwait
GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1 0x00007f97f4e8c6e7 in PyCOND_TIMEDWAIT (us=<optimized out>, mut=0x7f97f509ff70 <_PyRuntime+432>, cond=0x7f97f509ff40 <_PyRuntime+384>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/condvar.h:73
#2 take_gil (tstate=tstate
entry=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval_gil.h:247
#3 0x00007f97f4e8cb2e in PyEval_RestoreThread (tstate=tstate
entry=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:467
#4 0x00007f97f4f333f2 in pysleep (secs=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Modules/timemodule.c:2037
#5 time_sleep (self=<optimized out>, obj=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Modules/timemodule.c:365
#6 0x00007f97f4deea73 in cfunction_vectorcall_O (func=0x7f97f5208950, args=0x7f97d1338ec0, nargsf=<optimized out>, kwnames=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Objects/methodobject.c:512
#7 0x00007f97f4d68892 in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=<optimized out>, args=0x7f97d1338ec0, callable=0x7f97f5208950, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/cpython/abstract.h:118
#8 PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, args=0x7f97d1338ec0, callable=0x7f97f5208950) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/cpython/abstract.h:127
#9 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:5072
#10 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:3487
#11 0x00007f97f4e8d90e in _PyEval_EvalFrame (throwflag=0, f=0x7f97d1338d40, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/internal/pycore_ceval.h:40
#12 _PyEval_EvalCode (tstate=tstate
entry=0x64b7b00, _co=_co
entry=0x7f97d1280a80, globals=<optimized out>, locals=locals
entry=0x0, args=<optimized out>, argcount=1, kwnames=0x0, kwargs=0x7f97f512a480, kwcount=0, kwstep=1, defs=0x0, defcount=0, kwdefs=0x0, closure=0x0, name=0x7f97d127cc60, qualname=0x7f97d1281500) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:4327
#13 0x00007f97f4daa441 in _PyFunction_Vectorcall (func=<optimized out>, stack=<optimized out>, nargsf=<optimized out>, kwnames=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Objects/call.c:396
#14 0x00007f97f4d66274 in do_call_core (kwdict=0x7f97d127eb00, callargs=0x7f97f512a460, func=0x7f97ed669a60, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:5120
#15 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:3580
#16 0x00007f97f4d60bbb in _PyEval_EvalFrame (throwflag=0, f=0x7f97f5112740, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/internal/pycore_ceval.h:40
#17 function_code_fastcall (tstate=0x64b7b00, co=<optimized out>, args=<optimized out>, nargs=1, globals=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Objects/call.c:330
#18 0x00007f97f4d687d0 in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=<optimized out>, args=0x7f97d12dc9b8, callable=0x7f97d34c21f0, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/cpython/abstract.h:118
#19 PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, args=0x7f97d12dc9b8, callable=0x7f97d34c21f0) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/cpython/abstract.h:127
#20 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:5072
#21 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:3504
#22 0x00007f97f4d60bbb in _PyEval_EvalFrame (throwflag=0, f=0x7f97d12dc840, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/internal/pycore_ceval.h:40
#23 function_code_fastcall (tstate=0x64b7b00, co=<optimized out>, args=<optimized out>, nargs=1, globals=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Objects/call.c:330
#24 0x00007f97f4d687d0 in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=<optimized out>, args=0x7f97d34b5a78, callable=0x7f97d34c24c0, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/cpython/abstract.h:118
#25 PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, args=0x7f97d34b5a78, callable=0x7f97d34c24c0) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/cpython/abstract.h:127
#26 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:5072
#27 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:3504
#28 0x00007f97f4d60bbb in _PyEval_EvalFrame (throwflag=0, f=0x7f97d34b5900, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/internal/pycore_ceval.h:40
#29 function_code_fastcall (tstate=0x64b7b00, co=<optimized out>, args=<optimized out>, nargs=1, globals=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Objects/call.c:330
#30 0x00007f97f4dad2ec in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=1, args=0x7f97d125ae68, callable=0x7f97d34c2280, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/cpython/abstract.h:118
#31 method_vectorcall (method=<optimized out>, args=0x7f97f5250058, nargsf=<optimized out>, kwnames=0x0) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Objects/classobject.c:61
#32 0x00007f97f4f343a9 in t_bootstrap (boot_raw=0x7f97d1282a80) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Modules/_threadmodule.c:1040
#33 0x00007f97f4edbbd7 in pythread_wrapper (arg=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/thread_pthread.h:236
#34 0x00007f97f48acea5 in start_thread () from /lib64/libpthread.so.0
#35 0x00007f97f3eccb0d in clone () from /lib64/libc.so.6
Thread 1 (Thread 0x7f97f528c740 (LWP 17761) "python"):
#0 0x00007f97f3e93659 in waitpid () from /lib64/libc.so.6
#1 0x00007f97f3e10f62 in do_system () from /lib64/libc.so.6
#2 0x00007f97f3e11311 in system () from /lib64/libc.so.6
#3 0x00007f97ed1167b6 in TUnixSystem::Exec (this=0x1552240, shellcmd=0x72c7380 "/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.24.06-3455f/x86_64-centos7-gcc11-dbg/etc/gdb-backtrace.sh 17761 1>&2") at /build/jenkins/workspace/lcg_release_pipeline/build/projects/ROOT-6.24.06/src/ROOT/6.24.06/core/unix/src/TUnixSystem.cxx:2120
#4 0x00007f97ed117057 in TUnixSystem::StackTrace (this=0x1552240) at /build/jenkins/workspace/lcg_release_pipeline/build/projects/ROOT-6.24.06/src/ROOT/6.24.06/core/unix/src/TUnixSystem.cxx:2411
#5 0x00007f97ed44a2a6 in (anonymous namespace)::do_trace (sig=1) at /build/jenkins/workspace/lcg_release_pipeline/build/projects/ROOT-6.24.06/src/ROOT/6.24.06/bindings/pyroot/cppyy/cppyy-backend/clingwrapper/src/clingwrapper.cxx:182
#6 0x00007f97ed44a322 in (anonymous namespace)::TExceptionHandlerImp::HandleException (this=0x32408d0, sig=1) at /build/jenkins/workspace/lcg_release_pipeline/build/projects/ROOT-6.24.06/src/ROOT/6.24.06/bindings/pyroot/cppyy/cppyy-backend/clingwrapper/src/clingwrapper.cxx:195
#7 0x00007f97ed11a9f3 in TUnixSystem::DispatchSignals (this=0x1552240, sig=kSigSegmentationViolation) at /build/jenkins/workspace/lcg_release_pipeline/build/projects/ROOT-6.24.06/src/ROOT/6.24.06/core/unix/src/TUnixSystem.cxx:3644
#8 0x00007f97ed1129ae in SigHandler (sig=kSigSegmentationViolation) at /build/jenkins/workspace/lcg_release_pipeline/build/projects/ROOT-6.24.06/src/ROOT/6.24.06/core/unix/src/TUnixSystem.cxx:407
#9 0x00007f97ed11a949 in sighandler (sig=11) at /build/jenkins/workspace/lcg_release_pipeline/build/projects/ROOT-6.24.06/src/ROOT/6.24.06/core/unix/src/TUnixSystem.cxx:3620
#10 <signal handler called>
#11 std::local_Rb_tree_increment (__x=0x41) at /build/dkonst/gcc-clang-2/build/contrib/gcc-11.1.0/src/gcc/11.1.0/libstdc++-v3/src/c++98/tree.cc:62
#12 std::_Rb_tree_increment (__x=0x41) at /build/dkonst/gcc-clang-2/build/contrib/gcc-11.1.0/src/gcc/11.1.0/libstdc++-v3/src/c++98/tree.cc:85
#13 0x00007f97d2c7a02d in ?? ()
#14 0x0000000007237630 in ?? ()
#15 0x00000001ed44ccb9 in ?? ()
#16 0x0000000007237630 in ?? ()
#17 0x0000000000000041 in ?? ()
#18 0x00007fff1a6fb5d0 in ?? ()
#19 0x00007f97d2c7a082 in ?? ()
#20 0x00000000072af2d0 in ?? ()
#21 0x00007fff1a6fb610 in ?? ()
#22 0x00000000072af2d0 in ?? ()
#23 0x00007fff1a6fb610 in ?? ()
#24 0x0000000100000001 in ?? ()
#25 0x0000000007237630 in ?? ()
#26 0x00007fff1a6fb6e0 in ?? ()
#27 0x00007f97ed44cf39 in WrapperCall (method=0, nargs=0, args_=0x0, self=0x0, result=0x0) at /build/jenkins/workspace/lcg_release_pipeline/build/projects/ROOT-6.24.06/src/ROOT/6.24.06/bindings/pyroot/cppyy/cppyy-backend/clingwrapper/src/clingwrapper.cxx:778
===========================================================
The lines below might hint at the cause of the crash.
You may get help by asking at the ROOT forum https://root.cern.ch/forum
Only if you are really convinced it is a bug in ROOT then please submit a
report at https://root.cern.ch/bugs Please post the ENTIRE stack trace
from above as an attachment in addition to anything else
that might help us fixing this issue.
===========================================================
#11 std::local_Rb_tree_increment (__x=0x41) at /build/dkonst/gcc-clang-2/build/contrib/gcc-11.1.0/src/gcc/11.1.0/libstdc++-v3/src/c++98/tree.cc:62
#12 std::_Rb_tree_increment (__x=0x41) at /build/dkonst/gcc-clang-2/build/contrib/gcc-11.1.0/src/gcc/11.1.0/libstdc++-v3/src/c++98/tree.cc:85
#13 0x00007f97d2c7a02d in ?? ()
#14 0x0000000007237630 in ?? ()
#15 0x00000001ed44ccb9 in ?? ()
#16 0x0000000007237630 in ?? ()
#17 0x0000000000000041 in ?? ()
#18 0x00007fff1a6fb5d0 in ?? ()
#19 0x00007f97d2c7a082 in ?? ()
#20 0x00000000072af2d0 in ?? ()
#21 0x00007fff1a6fb610 in ?? ()
#22 0x00000000072af2d0 in ?? ()
#23 0x00007fff1a6fb610 in ?? ()
#24 0x0000000100000001 in ?? ()
#25 0x0000000007237630 in ?? ()
#26 0x00007fff1a6fb6e0 in ?? ()
#27 0x00007f97ed44cf39 in WrapperCall (method=0, nargs=0, args_=0x0, self=0x0, result=0x0) at /build/jenkins/workspace/lcg_release_pipeline/build/projects/ROOT-6.24.06/src/ROOT/6.24.06/bindings/pyroot/cppyy/cppyy-backend/clingwrapper/src/clingwrapper.cxx:778
===========================================================
*** Break *** segmentation violation
===========================================================
There was a crash (kSigSegmentationViolation).
This is the entire stack trace of all threads:
===========================================================
Thread 2 (Thread 0x7f97d125b700 (LWP 19070) "python"):
#0 0x00007f97f48b0de2 in pthread_cond_timedwait
GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1 0x00007f97f4e8c6e7 in PyCOND_TIMEDWAIT (us=<optimized out>, mut=0x7f97f509ff70 <_PyRuntime+432>, cond=0x7f97f509ff40 <_PyRuntime+384>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/condvar.h:73
#2 take_gil (tstate=tstate
entry=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval_gil.h:247
#3 0x00007f97f4e8cb2e in PyEval_RestoreThread (tstate=tstate
entry=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:467
#4 0x00007f97f4f333f2 in pysleep (secs=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Modules/timemodule.c:2037
#5 time_sleep (self=<optimized out>, obj=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Modules/timemodule.c:365
#6 0x00007f97f4deea73 in cfunction_vectorcall_O (func=0x7f97f5208950, args=0x7f97d1338ec0, nargsf=<optimized out>, kwnames=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Objects/methodobject.c:512
#7 0x00007f97f4d68892 in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=<optimized out>, args=0x7f97d1338ec0, callable=0x7f97f5208950, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/cpython/abstract.h:118
#8 PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, args=0x7f97d1338ec0, callable=0x7f97f5208950) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/cpython/abstract.h:127
#9 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:5072
#10 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:3487
#11 0x00007f97f4e8d90e in _PyEval_EvalFrame (throwflag=0, f=0x7f97d1338d40, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/internal/pycore_ceval.h:40
#12 _PyEval_EvalCode (tstate=tstate
entry=0x64b7b00, _co=_co
entry=0x7f97d1280a80, globals=<optimized out>, locals=locals
entry=0x0, args=<optimized out>, argcount=1, kwnames=0x0, kwargs=0x7f97f512a480, kwcount=0, kwstep=1, defs=0x0, defcount=0, kwdefs=0x0, closure=0x0, name=0x7f97d127cc60, qualname=0x7f97d1281500) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:4327
#13 0x00007f97f4daa441 in _PyFunction_Vectorcall (func=<optimized out>, stack=<optimized out>, nargsf=<optimized out>, kwnames=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Objects/call.c:396
#14 0x00007f97f4d66274 in do_call_core (kwdict=0x7f97d127eb00, callargs=0x7f97f512a460, func=0x7f97ed669a60, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:5120
#15 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:3580
#16 0x00007f97f4d60bbb in _PyEval_EvalFrame (throwflag=0, f=0x7f97f5112740, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/internal/pycore_ceval.h:40
#17 function_code_fastcall (tstate=0x64b7b00, co=<optimized out>, args=<optimized out>, nargs=1, globals=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Objects/call.c:330
#18 0x00007f97f4d687d0 in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=<optimized out>, args=0x7f97d12dc9b8, callable=0x7f97d34c21f0, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/cpython/abstract.h:118
#19 PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, args=0x7f97d12dc9b8, callable=0x7f97d34c21f0) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/cpython/abstract.h:127
#20 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:5072
#21 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:3504
#22 0x00007f97f4d60bbb in _PyEval_EvalFrame (throwflag=0, f=0x7f97d12dc840, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/internal/pycore_ceval.h:40
#23 function_code_fastcall (tstate=0x64b7b00, co=<optimized out>, args=<optimized out>, nargs=1, globals=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Objects/call.c:330
#24 0x00007f97f4d687d0 in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=<optimized out>, args=0x7f97d34b5a78, callable=0x7f97d34c24c0, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/cpython/abstract.h:118
#25 PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, args=0x7f97d34b5a78, callable=0x7f97d34c24c0) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/cpython/abstract.h:127
#26 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:5072
#27 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/ceval.c:3504
#28 0x00007f97f4d60bbb in _PyEval_EvalFrame (throwflag=0, f=0x7f97d34b5900, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/internal/pycore_ceval.h:40
#29 function_code_fastcall (tstate=0x64b7b00, co=<optimized out>, args=<optimized out>, nargs=1, globals=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Objects/call.c:330
#30 0x00007f97f4dad2ec in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=1, args=0x7f97d125ae68, callable=0x7f97d34c2280, tstate=0x64b7b00) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Include/cpython/abstract.h:118
#31 method_vectorcall (method=<optimized out>, args=0x7f97f5250058, nargsf=<optimized out>, kwnames=0x0) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Objects/classobject.c:61
#32 0x00007f97f4f343a9 in t_bootstrap (boot_raw=0x7f97d1282a80) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Modules/_threadmodule.c:1040
#33 0x00007f97f4edbbd7 in pythread_wrapper (arg=<optimized out>) at /build/jenkins/workspace/lcg_release_pipeline/build/externals/Python-3.9.6/src/Python/3.9.6/Python/thread_pthread.h:236
#34 0x00007f97f48acea5 in start_thread () from /lib64/libpthread.so.0
#35 0x00007f97f3eccb0d in clone () from /lib64/libc.so.6
Thread 1 (Thread 0x7f97f528c740 (LWP 17761) "python"):
#0 0x00007f97f3e93659 in waitpid () from /lib64/libc.so.6
#1 0x00007f97f3e10f62 in do_system () from /lib64/libc.so.6
#2 0x00007f97f3e11311 in system () from /lib64/libc.so.6
#3 0x00007f97ed1167b6 in TUnixSystem::Exec (this=0x1552240, shellcmd=0x67f67e0 "/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.24.06-3455f/x86_64-centos7-gcc11-dbg/etc/gdb-backtrace.sh 17761 1>&2") at /build/jenkins/workspace/lcg_release_pipeline/build/projects/ROOT-6.24.06/src/ROOT/6.24.06/core/unix/src/TUnixSystem.cxx:2120
#4 0x00007f97ed117057 in TUnixSystem::StackTrace (this=0x1552240) at /build/jenkins/workspace/lcg_release_pipeline/build/projects/ROOT-6.24.06/src/ROOT/6.24.06/core/unix/src/TUnixSystem.cxx:2411
#5 0x00007f97ed44a2a6 in (anonymous namespace)::do_trace (sig=1) at /build/jenkins/workspace/lcg_release_pipeline/build/projects/ROOT-6.24.06/src/ROOT/6.24.06/bindings/pyroot/cppyy/cppyy-backend/clingwrapper/src/clingwrapper.cxx:182
#6 0x00007f97ed44a322 in (anonymous namespace)::TExceptionHandlerImp::HandleException (this=0x32408d0, sig=1) at /build/jenkins/workspace/lcg_release_pipeline/build/projects/ROOT-6.24.06/src/ROOT/6.24.06/bindings/pyroot/cppyy/cppyy-backend/clingwrapper/src/clingwrapper.cxx:195
#7 0x00007f97ed11a9f3 in TUnixSystem::DispatchSignals (this=0x1552240, sig=kSigSegmentationViolation) at /build/jenkins/workspace/lcg_release_pipeline/build/projects/ROOT-6.24.06/src/ROOT/6.24.06/core/unix/src/TUnixSystem.cxx:3644
#8 0x00007f97ed1129ae in SigHandler (sig=kSigSegmentationViolation) at /build/jenkins/workspace/lcg_release_pipeline/build/projects/ROOT-6.24.06/src/ROOT/6.24.06/core/unix/src/TUnixSystem.cxx:407
#9 0x00007f97ed11a949 in sighandler (sig=11) at /build/jenkins/workspace/lcg_release_pipeline/build/projects/ROOT-6.24.06/src/ROOT/6.24.06/core/unix/src/TUnixSystem.cxx:3620
#10 <signal handler called>
#11 std::local_Rb_tree_increment (__x=0x41) at /build/dkonst/gcc-clang-2/build/contrib/gcc-11.1.0/src/gcc/11.1.0/libstdc++-v3/src/c++98/tree.cc:62
#12 std::_Rb_tree_increment (__x=0x41) at /build/dkonst/gcc-clang-2/build/contrib/gcc-11.1.0/src/gcc/11.1.0/libstdc++-v3/src/c++98/tree.cc:85
#13 0x00007f97d2c78023 in ?? ()
#14 0x0000000007237630 in ?? ()
#15 0x0000000007237630 in ?? ()
#16 0x00007fff1a6fb5d0 in ?? ()
#17 0x00007f97d2c78079 in ?? ()
#18 0xffffffff00000000 in ?? ()
#19 0x00007fff1a6fb718 in ?? ()
#20 0x00007fff1a6fb718 in ?? ()
#21 0x00007fff1a6fb610 in ?? ()
#22 0x000000001a6fb5e0 in ?? ()
#23 0x0000000007237630 in ?? ()
#24 0x00007fff1a6fb6e0 in ?? ()
#25 0x00007f97ed44cf39 in WrapperCall (method=0, nargs=0, args_=0x0, self=0x0, result=0x0) at /build/jenkins/workspace/lcg_release_pipeline/build/projects/ROOT-6.24.06/src/ROOT/6.24.06/bindings/pyroot/cppyy/cppyy-backend/clingwrapper/src/clingwrapper.cxx:778
===========================================================
The lines below might hint at the cause of the crash.
You may get help by asking at the ROOT forum https://root.cern.ch/forum
Only if you are really convinced it is a bug in ROOT then please submit a
report at https://root.cern.ch/bugs Please post the ENTIRE stack trace
from above as an attachment in addition to anything else
that might help us fixing this issue.
===========================================================
#11 std::local_Rb_tree_increment (__x=0x41) at /build/dkonst/gcc-clang-2/build/contrib/gcc-11.1.0/src/gcc/11.1.0/libstdc++-v3/src/c++98/tree.cc:62
#12 std::_Rb_tree_increment (__x=0x41) at /build/dkonst/gcc-clang-2/build/contrib/gcc-11.1.0/src/gcc/11.1.0/libstdc++-v3/src/c++98/tree.cc:85
#13 0x00007f97d2c78023 in ?? ()
#14 0x0000000007237630 in ?? ()
#15 0x0000000007237630 in ?? ()
#16 0x00007fff1a6fb5d0 in ?? ()
#17 0x00007f97d2c78079 in ?? ()
#18 0xffffffff00000000 in ?? ()
#19 0x00007fff1a6fb718 in ?? ()
#20 0x00007fff1a6fb718 in ?? ()
#21 0x00007fff1a6fb610 in ?? ()
#22 0x000000001a6fb5e0 in ?? ()
#23 0x0000000007237630 in ?? ()
#24 0x00007fff1a6fb6e0 in ?? ()
#25 0x00007f97ed44cf39 in WrapperCall (method=0, nargs=0, args_=0x0, self=0x0, result=0x0) at /build/jenkins/workspace/lcg_release_pipeline/build/projects/ROOT-6.24.06/src/ROOT/6.24.06/bindings/pyroot/cppyy/cppyy-backend/clingwrapper/src/clingwrapper.cxx:778
===========================================================
johakala@lxplus793 ~/pyroot-test #
ROOT Version: 6.24/06
Platform: CentOS 7
Compiler: gcc11