Files
RustPython/Lib/test
Luan Taraschi 97a142d809 Bound the recursion in exception group split and subgroup (#8584)
Both walk nested groups by calling themselves back through
vm.call_method, and neither pushes a Python frame, so the frame limit
never sees the nesting and the native stack runs out first. A group
nested past the recursion limit segfaults:

    e = TypeError(1)
    for _ in range(exceeds_recursion_limit()):
        e = ExceptionGroup("eg", [e])
    e.split(TypeError)      # dumps core

vm.with_recursion is the guard for exactly this, the same one comparison
and repr already use, and it turns the crash into the RecursionError
CPython raises. test_deep_split and test_deep_subgroup were skipped on
the segfault and now pass.

Assisted-by: Claude Code:claude-opus-5
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