STINNER Victor <vstin...@python.org> added the comment:
There was such bug in CPython stdlib, in the _testcapi module, see commit
310e2d25170a88ef03f6fd31efcc899fe062da2c of bpo-36854:
commit 310e2d25170a88ef03f6fd31efcc899fe062da2c
Author: Victor Stinner <vstin...@python.org>
Date: Fri Nov 22 10:58:00 2019 +0100
bpo-36854: Fix refleak in subinterpreter (GH-17331)
finalize_interp_clear() now explicitly clears the codec registry and
then trigger a GC collection to clear all references.
diff --git a/Modules/_testcapimodule.c b/Modules/_testcapimodule.c
index baa6907b7e..0908f3457f 100644
--- a/Modules/_testcapimodule.c
+++ b/Modules/_testcapimodule.c
@@ -6721,11 +6721,14 @@ PyInit__testcapi(void)
PyModule_AddObject(m, "instancemethod", (PyObject
*)&PyInstanceMethod_Type);
PyModule_AddIntConstant(m, "the_number_three", 3);
+ PyObject *v;
#ifdef WITH_PYMALLOC
- PyModule_AddObject(m, "WITH_PYMALLOC", Py_True);
+ v = Py_True;
#else
- PyModule_AddObject(m, "WITH_PYMALLOC", Py_False);
+ v = Py_False;
#endif
+ Py_INCREF(v);
+ PyModule_AddObject(m, "WITH_PYMALLOC", v);
TestError = PyErr_NewException("_testcapi.error", NULL, NULL);
Py_INCREF(TestError);
----------
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue45061>
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