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Misc/NEWS.d/next/Core_and_Builtins/2025-08-18-08-14-52.gh-issue-137894.SrkIA_.rst

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+Fix segmentation fault in deeply nested :func:`filter` iterator chains by
+adding a ``tp_clear`` method to the filter object. Previously, creating
+thousands of nested filter iterators and then consuming them would cause
+a stack overflow during garbage collection, leading to interpreter crashes.
+Now such cases properly raise :exc:`RecursionError` instead of crashing
+the interpreter.