$ gdb --args python3 test1.py
(gdb) r
Program received signal SIGSEGV, Segmentation fault.
0x00005555557f2080 in ?? ()
(gdb) bt
#0  0x00005555557f2080 in ?? ()
#1  0x00007fffef89ad1e in ffi_call_unix64 () at ../src/x86/unix64.S:76
#2  0x00007fffef89a68f in ffi_call (cif=<optimized out>, fn=<optimized out>, rvalue=<optimized out>, avalue=<optimized out>) at ../src/x86/ffi64.c:525
#3  0x00007fffefaae90b in _call_function_pointer (argcount=2, resmem=0x7fffffffd520, restype=<optimized out>, atypes=0x7fffffffd4e0, avalues=0x7fffffffd500, pProc=0x7fffecaf7a30 <archive_read_next_header2>, flags=4353) at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Modules/_ctypes/callproc.c:809
#4  _ctypes_callproc () at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Modules/_ctypes/callproc.c:1166
#5  0x00007fffefaaf314 in PyCFuncPtr_call () at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Modules/_ctypes/_ctypes.c:3962
#6  0x00007ffff79980f4 in _PyObject_FastCallDict () at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Objects/abstract.c:2331
#7  0x00007ffff7a06d8d in call_function () at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Python/ceval.c:4848
#8  0x00007ffff7a30e9a in _PyEval_EvalFrameDefault () at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Python/ceval.c:3322
#9  0x00007ffff79f9872 in gen_send_ex () at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Objects/genobject.c:189
#10 0x00007ffff79f9fb1 in gen_iternext (gen=<optimized out>) at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Objects/genobject.c:563
#11 builtin_next () at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Python/bltinmodule.c:1330
#12 0x00007ffff79f918f in _PyCFunction_FastCallDict () at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Objects/methodobject.c:234
#13 0x00007ffff7a06c5a in call_function () at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Python/ceval.c:4824
#14 0x00007ffff7a30e9a in _PyEval_EvalFrameDefault () at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Python/ceval.c:3322
#15 0x00007ffff7a0fb38 in _PyEval_EvalCodeWithName (qualname=0x0, name=<optimized out>, closure=<optimized out>, kwdefs=<optimized out>, defcount=0, defs=<optimized out>, kwstep=2, kwcount=<optimized out>, kwargs=0x0, kwnames=0x0, argcount=0, args=0x0, locals={'__name__': '__main__', '__doc__': None, '__package__': None, '__loader__': <SourceFileLoader(name='__main__', path='test1.py') at remote 0x7ffff7efeac8>, '__spec__': None, '__annotations__': {}, '__builtins__': <module at remote 0x7ffff7fc5638>, '__file__': 'test1.py', '__cached__': None, 'libarchive': <module at remote 0x7fffefcd75e8>, 'os': <module at remote 0x7ffff7e8e138>, 'path': 'test1.tar', 'archive': <ArchiveRead(_pointer=93824995752368) at remote 0x7fffefcd05c0>}, globals={'__name__': '__main__', '__doc__': None, '__package__': None, '__loader__': <SourceFileLoader(name='__main__', path='test1.py') at remote 0x7ffff7efeac8>, '__spec__': None, '__annotations__': {}, '__builtins__': <module at remote 0x7ffff7fc5638>, '__file__': 'test1.py', '__cached__': None, 'libarchive': <module at remote 0x7fffefcd75e8>, 'os': <module at remote 0x7ffff7e8e138>, 'path': 'test1.tar', 'archive': <ArchiveRead(_pointer=93824995752368) at remote 0x7fffefcd05c0>}, _co=<code at remote 0x7ffff7f018a0>) at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Python/ceval.c:4153
#16 PyEval_EvalCodeEx () at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Python/ceval.c:4174
#17 0x00007ffff7a108bb in PyEval_EvalCode (co=co@entry=<code at remote 0x7ffff7f018a0>, globals=globals@entry={'__name__': '__main__', '__doc__': None, '__package__': None, '__loader__': <SourceFileLoader(name='__main__', path='test1.py') at remote 0x7ffff7efeac8>, '__spec__': None, '__annotations__': {}, '__builtins__': <module at remote 0x7ffff7fc5638>, '__file__': 'test1.py', '__cached__': None, 'libarchive': <module at remote 0x7fffefcd75e8>, 'os': <module at remote 0x7ffff7e8e138>, 'path': 'test1.tar', 'archive': <ArchiveRead(_pointer=93824995752368) at remote 0x7fffefcd05c0>}, locals=locals@entry={'__name__': '__main__', '__doc__': None, '__package__': None, '__loader__': <SourceFileLoader(name='__main__', path='test1.py') at remote 0x7ffff7efeac8>, '__spec__': None, '__annotations__': {}, '__builtins__': <module at remote 0x7ffff7fc5638>, '__file__': 'test1.py', '__cached__': None, 'libarchive': <module at remote 0x7fffefcd75e8>, 'os': <module at remote 0x7ffff7e8e138>, 'path': 'test1.tar', 'archive': <ArchiveRead(_pointer=93824995752368) at remote 0x7fffefcd05c0>}) at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Python/ceval.c:730
#18 0x00007ffff7a9c692 in run_mod () at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Python/pythonrun.c:1025
#19 0x00007ffff7a9d35d in PyRun_FileExFlags () at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Python/pythonrun.c:978
#20 0x00007ffff7a9eee7 in PyRun_SimpleFileExFlags () at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Python/pythonrun.c:420
#21 0x00007ffff7a9efb7 in PyRun_AnyFileExFlags () at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Python/pythonrun.c:81
#22 0x00007ffff7a9fe7c in run_file (p_cf=0x7fffffffdd5c, filename=0x5555557584d0 L"test1.py", fp=0x55555580a220) at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Modules/main.c:344
#23 Py_Main () at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Modules/main.c:814
#24 0x0000555555554d45 in main () at /usr/src/debug/python3-3.6.5-1.fc27.x86_64/Programs/python.c:102
#25 0x00007ffff6b73f2a in __libc_start_main () from /lib64/libc.so.6
#26 0x0000555555554eba in _start ()


Reproducer works in F27 too ;)

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