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Thu Nov 30 10:42:50 EST 2017 · https://mail.python.org/pipermail/python-dev/2017-November/150982.html

Hi,

CPython has many C extensions with non-trivial PyInit_xxx() functions
which has to handle failures. A few modules use "Py_DECREF(m); retutrn
NULL;", but most functions only do "return NULL;". Is it a reference
leak or not?

Example from Modules/posixmodule.c:

    v = convertenviron();
    Py_XINCREF(v);
    if (v == NULL || PyModule_AddObject(m, "environ", v) != 0)
        return NULL;
    Py_DECREF(v);

Does this code leak a reference on m? ... Oh, and maybe also leaks a
reference on v?

Victor

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Showing content from https://mail.python.org/pipermail/python-dev/2017-November/150982.html below:

[Python-Dev] Py_DECREF(m) on PyInit_xxx() failure?