test_deep_split, test_deep_subgroup: RecursionError not raised

[mweinelt]

Things to check first

• I have searched the existing issues and didn't find my bug already reported there

• I have checked that my bug is still present in the latest release

Exceptiongroup version

1.2.0

Python version

3.12.3

What happened?

============================= test session starts ==============================
platform linux -- Python 3.12.3, pytest-8.1.1, pluggy-1.4.0
rootdir: /build/source
configfile: pyproject.toml
testpaths: tests
collected 99 items                                                             

tests/test_apport_monkeypatching.py s                                    [  1%]
tests/test_catch.py .................                                    [ 18%]
tests/test_catch_py311.py ..........                                     [ 28%]
tests/test_exceptions.py ..............................FF...........     [ 71%]
tests/test_formatting.py .......ss...ss..ss.s.s.s.s.                     [ 98%]
tests/test_suppress.py .                                                 [100%]

=================================== FAILURES ===================================
_______________ DeepRecursionInSplitAndSubgroup.test_deep_split ________________
tests/test_exceptions.py:375: in test_deep_split
    with self.assertRaises(RecursionError):
E   AssertionError: RecursionError not raised
______________ DeepRecursionInSplitAndSubgroup.test_deep_subgroup ______________
tests/test_exceptions.py:380: in test_deep_subgroup
    with self.assertRaises(RecursionError):
E   AssertionError: RecursionError not raised

How can we reproduce the bug?

Presumably upgrading to Python 3.12.3 or later should reproduce this test failure.