gdb sage

 sudo sage -gdb
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Reading symbols from python...
(No debugging symbols found in python)
Traceback (most recent call last):
  File "<string>", line 11, in <module>
ModuleNotFoundError: No module named 'Cython'
/tmp/tmplt3b693b:19: Error in sourced command file:
Error while executing Python code.
[New Thread 0x2503 of process 11786]
[New Thread 0x2303 of process 11786]
warning: unhandled dyld version (16)
[New Thread 0x1d03 of process 11786]
--Type <RET> for more, q to quit, c to continue without paging--

Thread 3 received signal SIGTRAP, Trace/breakpoint trap.
[Switching to Thread 0x1d03 of process 11786]
0x000000010000e000 in ?? ()
(gdb) c
Continuing.
┌────────────────────────────────────────────────────────────────────┐
│ SageMath version 9.3, Release Date: 2021-05-09                     │
│ Using Python 3.9.5. Type "help()" for help.                        │
└────────────────────────────────────────────────────────────────────┘
[New Thread 0x250f of process 11786]
sage: import cypari2
....: pari = cypari2.Pari()
....: pari.issquarefree(15)
....:
....: from concurrent.futures import ThreadPoolExecutor
....: with ThreadPoolExecutor() as e:
....:     j = e.submit(pari.issquarefree, 15)
....:
....: j.result()
1
[New Thread 0x230f of process 11786]

Thread 5 received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x230f of process 11786]
0x000000053d512090 in ?? ()
(gdb) c
Continuing.
---------------------------------------------------------------------------
SignalError                               Traceback (most recent call last)
<ipython-input-1-70014784c72d> in <module>
      7     j = e.submit(pari.issquarefree, Integer(15))
      8
----> 9 j.result()

/usr/local/Cellar/python@3.9/3.9.5/Frameworks/Python.framework/Versions/3.9/lib/python3.9/concurrent/futures/_base.py in result(self, timeout)
    436                     raise CancelledError()
    437                 elif self._state == FINISHED:
--> 438                     return self.__get_result()
    439
    440                 self._condition.wait(timeout)

/usr/local/Cellar/python@3.9/3.9.5/Frameworks/Python.framework/Versions/3.9/lib/python3.9/concurrent/futures/_base.py in __get_result(self)
    388         if self._exception:
    389             try:
--> 390                 raise self._exception
    391             finally:
    392                 # Break a reference cycle with the exception in self._exception

/usr/local/Cellar/python@3.9/3.9.5/Frameworks/Python.framework/Versions/3.9/lib/python3.9/concurrent/futures/thread.py in run(self)
     50
     51         try:
---> 52             result = self.fn(*self.args, **self.kwargs)
     53         except BaseException as exc:
     54             self.future.set_exception(exc)

cypari2/auto_instance.pxi in cypari2.pari_instance.Pari_auto.issquarefree()

cypari2/gen.pyx in cypari2.gen.objtogen()

/Applications/sage-dev/local/lib/python3.9/site-packages/sage/rings/integer.pyx in sage.rings.integer.Integer.__pari__ (build/cythonized/sage/rings/integer.c:37806)()
   6000         return self.__pari__().issquarefree()
   6001
-> 6002     cpdef __pari__(self):
   6003         """
   6004         Returns the PARI version of this integer.

/Applications/sage-dev/local/lib/python3.9/site-packages/sage/rings/integer.pyx in sage.rings.integer.Integer.__pari__ (build/cythonized/sage/rings/integer.c:37755)()
   6020
   6021         """
-> 6022         return new_gen_from_mpz_t(self.value)
   6023
   6024     def _interface_init_(self, I=None):

/Applications/sage-dev/local/lib/python3.9/site-packages/sage/libs/pari/convert_gmp.pyx in sage.libs.pari.convert_gmp.new_gen_from_mpz_t (build/cythonized/sage/libs/pari/convert_gmp.c:1298)()
     50         True
     51     """
---> 52     sig_on()
     53     return new_gen(_new_GEN_from_mpz_t(value))
     54

SignalError: Segmentation fault
sage:
Exiting Sage (CPU time 0m0.39s, Wall time 0m15.35s).
[Inferior 1 (process 11786) exited normally]
(gdb) bt
No stack.
(gdb)