Serafeim Mellos <[email protected]> added the comment:
Backtrace from segfault is below but I'm not very familiar with python's memory
internals in order to figure out where is the value initialized at the first
place
(gdb) bt
#0 _Py_XDECREF (op=0x1) at
/home/fim/.pyenv/versions/3.8-dev/include/python3.8m/object.h:896
#1 Custom_dealloc (self=0x7ffff7ec0660) at custom.c:20
#2 0x00000000004685f2 in _Py_Dealloc_inline (op=<optimized out>) at
./Include/object.h:806
#3 _Py_DECREF (filename=0x5f7460 "Objects/dictobject.c", lineno=1508,
op=<optimized out>) at ./Include/object.h:833
#4 delitem_common (old_value=<optimized out>, ix=<optimized out>,
hash=-2939463505650448616, mp=0x7ffff7f38d80) at Objects/dictobject.c:1508
#5 _PyDict_DelItem_KnownHash (hash=-2939463505650448616, key=0x7ffff7f39b90,
op=0x7ffff7f38d80) at Objects/dictobject.c:1560
#6 PyDict_DelItem (op=0x7ffff7f38d80, key=0x7ffff7f39b90) at
Objects/dictobject.c:1526
#7 0x0000000000468aa5 in dict_ass_sub (mp=0x7ffff7f38d80, v=0x7ffff7f39b90,
w=<optimized out>) at Objects/dictobject.c:2058
#8 0x00000000004262e3 in _PyEval_EvalFrameDefault (f=<optimized out>,
throwflag=<optimized out>) at Python/ceval.c:2044
#9 0x00000000004e3ac0 in PyEval_EvalFrameEx (throwflag=0, f=0x7ffff7f5a970) at
Python/ceval.c:531
#10 _PyEval_EvalCodeWithName (_co=_co@entry=0x7ffff7e97e40,
globals=globals@entry=0x7ffff7f38d80, locals=locals@entry=0x7ffff7f38d80,
args=args@entry=0x0, argcount=argcount@entry=0,
kwnames=kwnames@entry=0x0, kwargs=0x0, kwcount=0, kwstep=2, defs=0x0,
defcount=0, kwdefs=0x0, closure=0x0, name=0x0, qualname=0x0) at
Python/ceval.c:3946
#11 0x00000000004e3bb3 in PyEval_EvalCodeEx (closure=0x0, kwdefs=0x0,
defcount=0, defs=0x0, kwcount=0, kws=0x0, argcount=0, args=0x0,
locals=locals@entry=0x7ffff7f38d80,
globals=globals@entry=0x7ffff7f38d80, _co=_co@entry=0x7ffff7e97e40) at
Python/ceval.c:3975
#12 PyEval_EvalCode (co=co@entry=0x7ffff7e97e40,
globals=globals@entry=0x7ffff7f38d80, locals=locals@entry=0x7ffff7f38d80) at
Python/ceval.c:508
#13 0x000000000052009f in run_mod (arena=0x7ffff7fb81e0, flags=0x7fffffffd5e0,
locals=0x7ffff7f38d80, globals=0x7ffff7f38d80, filename=0x7ffff7e510d8,
mod=0x9a66c0)
at Python/pythonrun.c:1031
#14 PyRun_InteractiveOneObjectEx (fp=fp@entry=0x7ffff749b8a0 <_IO_2_1_stdin_>,
filename=filename@entry=0x7ffff7e510d8, flags=flags@entry=0x7fffffffd5e0) at
Python/pythonrun.c:256
#15 0x0000000000520386 in PyRun_InteractiveLoopFlags
(fp=fp@entry=0x7ffff749b8a0 <_IO_2_1_stdin_>,
filename_str=filename_str@entry=0x5f13a5 "<stdin>",
flags=flags@entry=0x7fffffffd5e0)
at Python/pythonrun.c:120
#16 0x00000000005204fc in PyRun_AnyFileExFlags (fp=0x7ffff749b8a0
<_IO_2_1_stdin_>, filename=0x5f13a5 "<stdin>", closeit=0, flags=0x7fffffffd5e0)
at Python/pythonrun.c:78
#17 0x000000000042e0fe in pymain_run_stdin (pymain=0x7fffffffd6f0,
pymain=0x7fffffffd6f0, cf=0x7fffffffd5e0, config=0x922ea8) at
Modules/main.c:1185
#18 pymain_run_python (interp=0x922e20, pymain=0x7fffffffd6f0) at
Modules/main.c:1613
#19 pymain_main (pymain=0x7fffffffd6f0) at Modules/main.c:1758
#20 0x000000000042e349 in _Py_UnixMain (argc=<optimized out>, argv=<optimized
out>) at Modules/main.c:1795
#21 0x00007ffff711b4db in __libc_start_main () from /lib64/libc.so.6
#22 0x000000000042aeaa in _start ()
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