[issue39672] SIGSEGV crash on shutdown with shelve & c pickle

[zd nex]

zd nex <zdnexnet at gmail.com> added the comment:

Okay I have managed to crash it when exit() was called and also I am attaching output with -v

python3.8 -X faulthandler ce_test_2.py 
start
end
--Return--
> /home/fractal/workspace/test_py_crash/ce_test_2.py(19)<module>()->None
-> breakpoint()
(Pdb) exit()
Traceback (most recent call last):
  File "ce_test_2.py", line 19, in <module>
    breakpoint()
  File "/usr/lib/python3.8/bdb.py", line 92, in trace_dispatch
    return self.dispatch_return(frame, arg)
  File "/usr/lib/python3.8/bdb.py", line 154, in dispatch_return
    if self.quitting: raise BdbQuit
bdb.BdbQuit
Fatal Python error: Segmentation fault

Current thread 0x00007f976975f740 (most recent call first):
  File "/usr/lib/python3.8/shelve.py", line 124 in __setitem__
  File "/usr/lib/python3.8/shelve.py", line 168 in sync
  File "/usr/lib/python3.8/shelve.py", line 144 in close
  File "/usr/lib/python3.8/shelve.py", line 162 in __del__
Neoprávněný přístup do paměti (SIGSEGV)
$ 


# destroy string
# cleanup[2] removing threading
# cleanup[2] removing atexit
# cleanup[2] removing logging
# cleanup[2] removing material
# cleanup[2] removing _dbm
# cleanup[2] removing dbm.ndbm
# cleanup[2] removing dbm
# destroy dbm
# cleanup[2] removing _gdbm
# cleanup[2] removing dbm.gnu
# cleanup[2] removing _ast
# cleanup[2] removing ast
# cleanup[2] removing dbm.dumb
# destroy _ast
Fatal Python error: Segmentation fault

Current thread 0x00007fd5477cb740 (most recent call first):
  File "/usr/lib/python3.8/shelve.py", line 124 in __setitem__
  File "/usr/lib/python3.8/shelve.py", line 168 in sync
  File "/usr/lib/python3.8/shelve.py", line 144 in close
  File "/usr/lib/python3.8/shelve.py", line 162 in __del__
Neoprávněný přístup do paměti (SIGSEGV)

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Added file: https://bugs.python.org/file48907/crash_pdb.txt

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39672>
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