Arch Linux

$ cat test-case.sage
T=var('T')
solve_mod(T == 3, 9)

$ sage test-case.sage
sig_error() without sig_on()
------------------------------------------------------------------------
/usr/lib/python3.9/site-packages/cysignals/signals.cpython-39-x86_64-linux-gnu.so(+0x774d)[0x7f8db677874d]
/usr/lib/python3.9/site-packages/cysignals/signals.cpython-39-x86_64-linux-gnu.so(+0x780c)[0x7f8db677880c]
/usr/lib/python3.9/site-packages/cysignals/signals.cpython-39-x86_64-linux-gnu.so(+0xa946)[0x7f8db677b946]
/usr/lib/libc.so.6(+0x3cf80)[0x7f8db92b5f80]
/usr/lib/libc.so.6(kill+0xb)[0x7f8db92b61fb]
/usr/lib/python3.9/site-packages/sage/ext/memory.cpython-39-x86_64-linux-gnu.so(+0x3273)[0x7f8daf42d273]
/usr/lib/python3.9/site-packages/sage/ext/memory.cpython-39-x86_64-linux-gnu.so(+0x3490)[0x7f8daf42d490]
/usr/lib/libgmp.so.10(__gmp_tmp_reentrant_alloc+0x19)[0x7f8db6a4efa9]
/usr/lib/libgmp.so.10(__gmpz_n_pow_ui+0x7af)[0x7f8db6a611df]
/usr/lib/libpolys-4.2.0.so(_Z11nrnInitCharP9n_Procs_sPv+0xc2)[0x7f8d7c21ccb2]
/usr/lib/libpolys-4.2.0.so(_Z9nInitChar11n_coeffTypePv+0x343)[0x7f8d7c2153d3]
/usr/lib/python3.9/site-packages/sage/libs/singular/ring.cpython-39-x86_64-linux-gnu.so(+0x153c6)[0x7f8d7bbbe3c6]
/usr/lib/python3.9/site-packages/sage/rings/polynomial/multi_polynomial_libsingular.cpython-39-x86_64-linux-gnu.so(+0x25396)[0x7f8d7c6c7396]
/usr/lib/libpython3.9.so.1.0(_PyObject_MakeTpCall+0x38b)[0x7f8db95795fb]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x4b21)[0x7f8db9574941]
/usr/lib/libpython3.9.so.1.0(+0x128cbd)[0x7f8db956ecbd]
/usr/lib/libpython3.9.so.1.0(_PyFunction_Vectorcall+0x34e)[0x7f8db95813fe]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x2c9e)[0x7f8db9572abe]
/usr/lib/libpython3.9.so.1.0(+0x1294df)[0x7f8db956f4df]
/usr/lib/libpython3.9.so.1.0(_PyFunction_Vectorcall+0x34e)[0x7f8db95813fe]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x3c6)[0x7f8db95701e6]
/usr/lib/libpython3.9.so.1.0(+0x1294df)[0x7f8db956f4df]
/usr/lib/libpython3.9.so.1.0(_PyFunction_Vectorcall+0x34e)[0x7f8db95813fe]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x3c6)[0x7f8db95701e6]
/usr/lib/libpython3.9.so.1.0(+0x1294df)[0x7f8db956f4df]
/usr/lib/libpython3.9.so.1.0(_PyFunction_Vectorcall+0x34e)[0x7f8db95813fe]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x3c6)[0x7f8db95701e6]
/usr/lib/libpython3.9.so.1.0(+0x128cbd)[0x7f8db956ecbd]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalCodeWithName+0x51)[0x7f8db956e681]
/usr/lib/libpython3.9.so.1.0(PyEval_EvalCode+0x23)[0x7f8db9632593]
/usr/lib/libpython3.9.so.1.0(+0x1f385d)[0x7f8db963985d]
/usr/lib/libpython3.9.so.1.0(+0x13bc31)[0x7f8db9581c31]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x3c6)[0x7f8db95701e6]
/usr/lib/libpython3.9.so.1.0(+0x16b5d6)[0x7f8db95b15d6]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x5004)[0x7f8db9574e24]
/usr/lib/libpython3.9.so.1.0(+0x16b5d6)[0x7f8db95b15d6]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x5004)[0x7f8db9574e24]
/usr/lib/libpython3.9.so.1.0(+0x16b5d6)[0x7f8db95b15d6]
/usr/lib/libpython3.9.so.1.0(+0x1492d9)[0x7f8db958f2d9]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x5fa)[0x7f8db957041a]
/usr/lib/libpython3.9.so.1.0(_PyFunction_Vectorcall+0x1aa)[0x7f8db958125a]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x3c6)[0x7f8db95701e6]
/usr/lib/libpython3.9.so.1.0(_PyFunction_Vectorcall+0x1aa)[0x7f8db958125a]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x5fa)[0x7f8db957041a]
/usr/lib/libpython3.9.so.1.0(+0x128cbd)[0x7f8db956ecbd]
/usr/lib/libpython3.9.so.1.0(_PyFunction_Vectorcall+0x34e)[0x7f8db95813fe]
/usr/lib/libpython3.9.so.1.0(+0x14beb4)[0x7f8db9591eb4]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x1184)[0x7f8db9570fa4]
/usr/lib/libpython3.9.so.1.0(+0x128cbd)[0x7f8db956ecbd]
/usr/lib/libpython3.9.so.1.0(_PyFunction_Vectorcall+0x34e)[0x7f8db95813fe]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x5fa)[0x7f8db957041a]
/usr/lib/libpython3.9.so.1.0(+0x128cbd)[0x7f8db956ecbd]
/usr/lib/libpython3.9.so.1.0(_PyFunction_Vectorcall+0x34e)[0x7f8db95813fe]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x5fa)[0x7f8db957041a]
/usr/lib/libpython3.9.so.1.0(_PyFunction_Vectorcall+0x1aa)[0x7f8db958125a]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalFrameDefault+0x5fa)[0x7f8db957041a]
/usr/lib/libpython3.9.so.1.0(+0x128cbd)[0x7f8db956ecbd]
/usr/lib/libpython3.9.so.1.0(_PyEval_EvalCodeWithName+0x51)[0x7f8db956e681]
/usr/lib/libpython3.9.so.1.0(PyEval_EvalCode+0x23)[0x7f8db9632593]
/usr/lib/libpython3.9.so.1.0(+0x1fca4d)[0x7f8db9642a4d]
/usr/lib/libpython3.9.so.1.0(+0x1f82eb)[0x7f8db963e2eb]
/usr/lib/libpython3.9.so.1.0(+0x985bc)[0x7f8db94de5bc]
/usr/lib/libpython3.9.so.1.0(PyRun_SimpleFileExFlags+0x388)[0x7f8db94dd970]
/usr/lib/libpython3.9.so.1.0(Py_RunMain+0x32a)[0x7f8db965442a]
/usr/lib/libpython3.9.so.1.0(Py_BytesMain+0x39)[0x7f8db9625529]
/usr/lib/libc.so.6(__libc_start_main+0xd5)[0x7f8db92a0b25]
/usr/bin/python(_start+0x2e)[0x557c19dc904e]
------------------------------------------------------------------------
Attaching gdb to process id 358.
Cannot find gdb installed
GDB is not installed.
Install gdb for enhanced tracebacks.
------------------------------------------------------------------------
Unhandled SIGABRT: An abort() occurred.
This probably occurred because a *compiled* module has a bug
in it and is not properly wrapped with sig_on(), sig_off().
Python will now terminate.
------------------------------------------------------------------------
Aborted (core dumped)