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From: PICCA Frederic-Emmanuel <frederic-emmanuel.picca@synchrotron-soleil.fr>
Newsgroups: linux.debian.maint.python
Subject: python3.7-dbg issue ?
Date: Sat, 22 Sep 2018 15:20:03 +0200
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Xref: csiph.com linux.debian.maint.python:10926

Hello,

I try to understand this [1] test failure with python3.7-dbg

so, I ran this on my unstable box and I got this error from within gdb

testTrainingSpectrumReading (specfilewrapperTest.testSpecfilewrapper) ... o=
k

----------------------------------------------------------------------
Ran 43 tests in 489.199s

OK
* ob
object  : <refcnt 0 at 0xab326d8c>
type    : tuple
refcount: 0
address : 0xab326d8c
* op->_ob_prev->_ob_next
object  :
Thread 1 "python3.7-dbg" received signal SIGSEGV, Segmentation fault.
0x080a8f1d in PyObject_Repr (v=3D<unknown at remote 0xab326d8b>) at ../Obje=
cts/object.c:457
457     ../Objects/object.c: Aucun fichier ou dossier de ce type.
(gdb) bt
#0  0x080a8f1d in PyObject_Repr (v=3D<unknown at remote 0xab326d8b>) at ../=
Objects/object.c:457
#1  0x080a939a in PyObject_Print (op=3D<unknown at remote 0xab326d8b>, fp=
=3D0xb7e0dce0 <_IO_2_1_stderr_>, flags=3D0) at ../Objects/object.c:369
#2  0x080a94dd in _PyObject_Dump (op=3D<unknown at remote 0xab326d8b>) at .=
./Objects/object.c:427
#3  0x080a95af in _Py_ForgetReference (op=3DPython Exception <class 'Runtim=
eError'> Type does not have a target.:
) at ../Objects/object.c:1909
#4  0x080a8ea8 in _Py_Dealloc (Python Exception <class 'RuntimeError'> Type=
 does not have a target.:
op=3D) at ../Objects/object.c:1932
#5  0x080980e4 in free_keys_object (keys=3Dkeys@entry=3D0x91d0280) at ../Ob=
jects/dictobject.c:556
#6  0x08099ad6 in dict_dealloc (mp=3D0xb7a973f4) at ../Objects/dictobject.c=
:1911
#7  0x080a8ead in _Py_Dealloc (Python Exception <class 'RuntimeError'> Type=
 does not have a target.:
op=3D) at ../Objects/object.c:1933
#8  0x0813e444 in _PyImport_Fini () at ../Python/import.c:283
#9  0x0814c121 in Py_FinalizeEx () at ../Python/pylifecycle.c:1211
#10 0x0814c3ec in Py_Exit (sts=3D0) at ../Python/pylifecycle.c:2238
#11 0x08154661 in handle_system_exit () at ../Python/pythonrun.c:636
#12 0x08155d13 in PyErr_PrintEx (set_sys_last_vars=3D1) at ../Python/python=
run.c:646
#13 0x08156083 in PyErr_Print () at ../Python/pythonrun.c:542
#14 0x08067583 in pymain_run_module (modname=3D<optimized out>, set_argv0=
=3Dset_argv0@entry=3D1) at ../Modules/main.c:322
#15 0x08067ca0 in pymain_run_python (pymain=3Dpymain@entry=3D0xbffff3a0) at=
 ../Modules/main.c:2630
#16 0x0806934f in pymain_main (pymain=3Dpymain@entry=3D0xbffff3a0) at ../Mo=
dules/main.c:2782
#17 0x080694c2 in _Py_UnixMain (argc=3D3, argv=3D0xbffff534) at ../Modules/=
main.c:2817
#18 0x08064ecd in main (argc=3D3, argv=3D0xbffff534) at ../Programs/python.=
c:15

I personnaly do not have the knowledge in order to understand the issue.
So I would like your help in order to find the culprite here.

thanks

Frederic

[1] https://salsa.debian.org/science-team/pymca/-/jobs/45873/raw=