bpo-41984: GC track all user classes (GH-22701/GH-22702)
(cherry picked from commit c13b847a6f913b72eeb71651ff626390b738d973)
diff --git a/Modules/_testcapimodule.c b/Modules/_testcapimodule.c
index b2d070c..54c1e62 100644
--- a/Modules/_testcapimodule.c
+++ b/Modules/_testcapimodule.c
@@ -3629,6 +3629,25 @@
return obj;
}
+static PyObject *
+without_gc(PyObject *Py_UNUSED(self), PyObject *obj)
+{
+ PyTypeObject *tp = (PyTypeObject*)obj;
+ if (!PyType_Check(obj) || !PyType_HasFeature(tp, Py_TPFLAGS_HEAPTYPE)) {
+ return PyErr_Format(PyExc_TypeError, "heap type expected, got %R", obj);
+ }
+ if (PyType_IS_GC(tp)) {
+ // Don't try this at home, kids:
+ tp->tp_flags -= Py_TPFLAGS_HAVE_GC;
+ tp->tp_free = PyObject_Del;
+ tp->tp_traverse = NULL;
+ tp->tp_clear = NULL;
+ }
+ assert(!PyType_IS_GC(tp));
+ Py_INCREF(obj);
+ return obj;
+}
+
static PyMethodDef ml;
static PyObject *
@@ -5535,6 +5554,7 @@
{"meth_fastcall", (PyCFunction)(void(*)(void))meth_fastcall, METH_FASTCALL},
{"meth_fastcall_keywords", (PyCFunction)(void(*)(void))meth_fastcall_keywords, METH_FASTCALL|METH_KEYWORDS},
{"pynumber_tobase", pynumber_tobase, METH_VARARGS},
+ {"without_gc", without_gc, METH_O},
{NULL, NULL} /* sentinel */
};