Environment

• Qiskit version: 1.1.0rc1 (but also in previous stable versions)
• Python version: 3.12.3
• Operating system: Arch Linux

What is happening?

Some unit tests fail due to symengine crashes. For example, the following five tests from test_circuit_load_from_qpy.py crash on my system:

• test_parameter_expression
• test_evolutiongate_param_expr_time
• test_parameter_expression_global_phase
• test_parameter_vector_element_in_expression
• test_symengine_full_path

From the first test, the exact line when the the test crashes is this:

Which produces a src/tcmalloc.cc:304] Attempt to free invalid pointer 0x6146ecca5b60.

How can we reproduce the issue?

Here is a small self-contained script that can replicate the crash described above.

from qiskit.circuit.parameter import Parameter
from qiskit.circuit.parameterexpression import ParameterExpression


theta = Parameter("theta")
phi = Parameter("phi")
sum_param = theta + phi

sum_param._symbol_expr.__reduce__()
# src/tcmalloc.cc:304] Attempt to free invalid pointer 0x645c8e3eaa30 
# [1]    987079 IOT instruction (core dumped)  python

The following running on the same system works:

import symengine

theta = symengine.Symbol("theta")
phi = symengine.Symbol("phi")
sum_param = theta + phi

sum_param.__reduce__()

What should happen?

Ideally, all unit tests would pass in a clean chroot env on Arch Linux.

Any suggestions?

No response