test_arrayeditor.py::test_object_arrays_display consistently segfaults

[juliangilbey]

Issue Report Checklist

• Searched the issues page for similar reports
• Read the relevant sections of the Spyder Troubleshooting Guide and followed its advice
• Reproduced the issue after updating with conda update spyder (or pip, if not using Anaconda)
• Could not reproduce inside jupyter qtconsole (if console-related)
• Tried basic troubleshooting (if a bug/error)
  • Restarted Spyder
  • Reset preferences with spyder --reset
  • Reinstalled the latest version of Anaconda
  • Tried the other applicable steps from the Troubleshooting Guide
• Completed the Problem Description, Steps to Reproduce and Version sections below

Problem Description

The next segfault after #17083; at least this one is consistent and gives some sort of backtrace. This occurred when running the whole testsuite with runtests.py, and I pinned it down to this test. Even with this test excluded, though, I'm still getting a segfault when I run the whole test suite, so there is still more to come, unfortunately.

What steps reproduce the problem?

euler:~/debian/spyder-packages/spyder/build-area/spyder-5.2.1+dfsg1 $ xvfb-run -a -s "-screen 0 1024x768x24 +extension GLX" python3.9 -m pytest spyder/plugins/variableexplorer/widgets/tests/test_arrayeditor.py::test_object_arrays_display
============================= test session starts ==============================
platform linux -- Python 3.9.9, pytest-6.2.5, py-1.10.0, pluggy-0.13.0
PyQt5 5.15.6 -- Qt runtime 5.15.2 -- Qt compiled 5.15.2
rootdir: /home/jdg/debian/spyder-packages/spyder/build-area/spyder-5.2.1+dfsg1, configfile: pytest.ini
plugins: typeguard-2.11.1, lazy-fixture-0.6.3, hypothesis-5.43.3, order-1.0.0, anyio-3.4.0, xvfb-2.0.0, mock-3.6.1, xdist-2.4.0, timeout-2.0.1, cov-3.0.0, forked-1.3.0, qt-4.0.2, dependency-0.5.1, flaky-3.7.0
collected 1 item                                                               

spyder/plugins/variableexplorer/widgets/tests/test_arrayeditor.py Fatal Python error: Segmentation fault

Current thread 0x00007f6c07bbb740 (most recent call first):
  File "/usr/lib/python3/dist-packages/pytestqt/plugin.py", line 182 in _process_events
  File "/usr/lib/python3/dist-packages/pytestqt/plugin.py", line 151 in pytest_runtest_call
  File "/usr/lib/python3/dist-packages/pluggy/callers.py", line 203 in _multicall
  File "/usr/lib/python3/dist-packages/pluggy/manager.py", line 83 in <lambda>
  File "/usr/lib/python3/dist-packages/pluggy/manager.py", line 92 in _hookexec
  File "/usr/lib/python3/dist-packages/pluggy/hooks.py", line 286 in __call__
  File "/usr/lib/python3/dist-packages/_pytest/runner.py", line 255 in <lambda>
  File "/usr/lib/python3/dist-packages/_pytest/runner.py", line 311 in from_call
  File "/usr/lib/python3/dist-packages/_pytest/runner.py", line 254 in call_runtest_hook
  File "/usr/lib/python3/dist-packages/flaky/flaky_pytest_plugin.py", line 138 in call_and_report
  File "/usr/lib/python3/dist-packages/_pytest/runner.py", line 126 in runtestprotocol
  File "/usr/lib/python3/dist-packages/_pytest/runner.py", line 109 in pytest_runtest_protocol
  File "/usr/lib/python3/dist-packages/flaky/flaky_pytest_plugin.py", line 94 in pytest_runtest_protocol
  File "/usr/lib/python3/dist-packages/pluggy/callers.py", line 187 in _multicall
  File "/usr/lib/python3/dist-packages/pluggy/manager.py", line 83 in <lambda>
  File "/usr/lib/python3/dist-packages/pluggy/manager.py", line 92 in _hookexec
  File "/usr/lib/python3/dist-packages/pluggy/hooks.py", line 286 in __call__
  File "/usr/lib/python3/dist-packages/_pytest/main.py", line 348 in pytest_runtestloop
  File "/usr/lib/python3/dist-packages/pluggy/callers.py", line 187 in _multicall
  File "/usr/lib/python3/dist-packages/pluggy/manager.py", line 83 in <lambda>
  File "/usr/lib/python3/dist-packages/pluggy/manager.py", line 92 in _hookexec
  File "/usr/lib/python3/dist-packages/pluggy/hooks.py", line 286 in __call__
  File "/usr/lib/python3/dist-packages/_pytest/main.py", line 323 in _main
  File "/usr/lib/python3/dist-packages/_pytest/main.py", line 269 in wrap_session
  File "/usr/lib/python3/dist-packages/_pytest/main.py", line 316 in pytest_cmdline_main
  File "/usr/lib/python3/dist-packages/pluggy/callers.py", line 187 in _multicall
  File "/usr/lib/python3/dist-packages/pluggy/manager.py", line 83 in <lambda>
  File "/usr/lib/python3/dist-packages/pluggy/manager.py", line 92 in _hookexec
  File "/usr/lib/python3/dist-packages/pluggy/hooks.py", line 286 in __call__
  File "/usr/lib/python3/dist-packages/_pytest/config/__init__.py", line 162 in main
  File "/usr/lib/python3/dist-packages/_pytest/config/__init__.py", line 185 in console_main
  File "/usr/lib/python3/dist-packages/pytest/__main__.py", line 5 in <module>
  File "/usr/lib/python3.9/runpy.py", line 87 in _run_code
  File "/usr/lib/python3.9/runpy.py", line 197 in _run_module_as_main
Segmentation fault

As usual, this behaviour happens with xvfb-run and without, in a chroot and in a normal environment.

Versions

• Spyder version: 5.2.1
• Python version: 3.9 and 3.10
• Qt version: 5.15.2
• PyQt version: 5.15.6+dfsg-1+b1
• Operating System name/version: Debian testing and unstable

Dependencies

# Mandatory:
atomicwrites >=1.2.0          :  1.4.0 (OK)
chardet >=2.0.0               :  4.0.0 (OK)
cloudpickle >=0.5.0           :  2.0.0 (OK)
cookiecutter >=1.6.0          :  1.7.3 (OK)
diff_match_patch >=20181111   :  20200713 (OK)
intervaltree >=3.0.2          :  3.0.2 (OK)
IPython >=7.6.0               :  7.27.0 (OK)
jedi >=0.17.2;<0.19.0         :  0.18.0 (OK)
jellyfish >=0.7               :  0.8.9 (OK)
jsonschema >=3.2.0            :  3.2.0 (OK)
keyring >=17.0.0              :  23.3.0 (OK)
nbconvert >=4.0               :  6.1.0 (OK)
numpydoc >=0.6.0              :  1.1.0 (OK)
parso >=0.7.0;<0.9.0          :  0.8.1 (OK)
pexpect >=4.4.0               :  4.8.0 (OK)
pickleshare >=0.4             :  0.7.5 (OK)
psutil >=5.3                  :  5.8.0 (OK)
pygments >=2.0                :  2.7.1 (OK)
pylint >=2.5.0                :  2.12.2 (OK)
pyls_spyder >=0.4.0           :  0.4.0 (OK)
pylsp >=1.3.2;<1.4.0          :  1.3.3 (OK)
pylsp_black >=1.0.0           :  1.0.1 (OK)
qdarkstyle =3.0.2             :  3.0.2 (OK)
qstylizer >=0.1.10            :  0.2.1 (OK)
qtawesome >=1.0.2             :  1.1.1 (OK)
qtconsole >=5.2.1;<5.3.0      :  5.2.1 (OK)
qtpy >=1.5.0                  :  1.9.0 (OK)
rtree >=0.9.7                 :  0.9.7 (OK)
setuptools >=49.6.0           :  58.2.0 (OK)
sphinx >=0.6.6                :  4.3.2 (OK)
spyder_kernels >=2.2.0;<2.3.0 :  2.2.0 (OK)
textdistance >=4.2.0          :  4.2.2 (OK)
three_merge >=0.1.1           :  0.1.1 (OK)
watchdog >=0.10.3             :  2.1.6 (OK)
xdg >=0.26                    :  0.27 (OK)
zmq >=17                      :  22.3.0 (OK)

# Optional:
cython >=0.21                 :  0.29.24 (OK)
matplotlib >=2.0.0            :  3.3.4 (OK)
numpy >=1.7                   :  1.21.5 (OK)
pandas >=1.1.1                :  1.3.4 (OK)
scipy >=0.17.0                :  1.7.1 (OK)
sympy >=0.7.3                 :  1.7.1 (OK)