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gh-102356: Add thrashcan macros to filter object dealloc (GH-102426)

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Add thrashcan macros to the deallocator of the filter objects to protect against deeply nested destruction of chains of nested filters.
(cherry picked from commit 66aa78cbe6)

Co-authored-by: Marta Gómez Macías <mgmacias@google.com>
This commit is contained in:
Miss Islington (bot) 2023-03-05 03:20:41 -08:00 • committed by GitHub
parent d4992c7315
commit d4a04e55d8
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4 changed files with 15 additions and 0 deletions
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Python/bltinmodule.c
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@ -567,9 +567,11 @@ static void
filter_dealloc(filterobject *lz)
{
PyObject_GC_UnTrack(lz);
Py_TRASHCAN_BEGIN(lz, filter_dealloc)
Py_XDECREF(lz->func);
Py_XDECREF(lz->it);
Py_TYPE(lz)->tp_free(lz);
Py_TRASHCAN_END
}
static int