bpo-1635741: Port audioop extension module to multiphase initialization(PEP 489) #18608
using the var name module to replace m
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| Original file line number | Diff line number | Diff line change |
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@@ -1923,42 +1923,42 @@ static PyMethodDef audioop_methods[] = { | |
| }; | ||
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| static int | ||
| audioop_traverse(PyObject *module, visitproc visit, void *arg) | ||
| { | ||
| audioop_state *state = (audioop_state *)PyModule_GetState(module); | ||
| if (state) { | ||
| Py_VISIT(state->AudioopError); | ||
| } | ||
| return 0; | ||
| } | ||
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| static int | ||
| audioop_clear(PyObject *module) | ||
| { | ||
| audioop_state *state = (audioop_state *)PyModule_GetState(module); | ||
| if (state) { | ||
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There was a problem hiding this comment. Is it really possible that state can be NULL when this function is called? module_clear() doesn't touch module->md_state value. Only module_dealloc() calls PyMem_FREE(m->md_state). But audioop_clear() must not be called on a deallocated module object. There was a problem hiding this comment. I would prefer to see this question answered before approving the PR. There was a problem hiding this comment. Is it worth us to change this logic as victor said? There was a problem hiding this comment. I created https://bugs.python.org/issue39824 to propose to change the Python behavior, so modules would not have to handle md_state=NULL anymore. |
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| Py_CLEAR(state->AudioopError); | ||
| } | ||
| return 0; | ||
| } | ||
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| static void | ||
| audioop_free(void *module) { | ||
| audioop_clear((PyObject *)module); | ||
| } | ||
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| static int | ||
| audioop_exec(PyObject* module) | ||
| { | ||
| audioop_state *state = get_audioop_state(module); | ||
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| state->AudioopError = PyErr_NewException("audioop.error", NULL, NULL); | ||
| if (state->AudioopError == NULL) { | ||
| return -1; | ||
| } | ||
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| Py_INCREF(state->AudioopError); | ||
| if (PyModule_AddObject(module, "error", state->AudioopError) < 0) { | ||
| Py_DECREF(state->AudioopError); | ||
| return -1; | ||
| } | ||
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Is it really possible that state can be NULL when this function is called?