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gh-100062: Remove error code tables from _ssl and err_names_to_codes #100063

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Merged
merged 2 commits into from
Apr 3, 2023
Merged

gh-100062: Remove error code tables from _ssl and err_names_to_codes #100063

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12b9314
gh-100062: Remove error code tables from _ssl and err_names_to_codes
davidben Dec 6, 2022
3dfbe26
Merge branch 'main' into ssl-err-tables
arhadthedev Apr 1, 2023
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14 changes: 0 additions & 14 deletions Modules/_ssl.c
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Original file line number Diff line number Diff line change
Expand Up @@ -5991,9 +5991,6 @@ sslmodule_init_errorcodes(PyObject *module)
state->err_codes_to_names = PyDict_New();
if (state->err_codes_to_names == NULL)
return -1;
state->err_names_to_codes = PyDict_New();
if (state->err_names_to_codes == NULL)
return -1;
state->lib_codes_to_names = PyDict_New();
if (state->lib_codes_to_names == NULL)
return -1;
Expand All @@ -6007,8 +6004,6 @@ sslmodule_init_errorcodes(PyObject *module)
return -1;
if (PyDict_SetItem(state->err_codes_to_names, key, mnemo))
return -1;
if (PyDict_SetItem(state->err_names_to_codes, mnemo, key))
return -1;
Py_DECREF(key);
Py_DECREF(mnemo);
errcode++;
Expand All @@ -6028,13 +6023,6 @@ sslmodule_init_errorcodes(PyObject *module)
libcode++;
}

if (PyModule_AddObjectRef(module, "err_codes_to_names", state->err_codes_to_names))
return -1;
if (PyModule_AddObjectRef(module, "err_names_to_codes", state->err_names_to_codes))
return -1;
if (PyModule_AddObjectRef(module, "lib_codes_to_names", state->lib_codes_to_names))
return -1;

return 0;
}

Expand Down Expand Up @@ -6189,7 +6177,6 @@ sslmodule_traverse(PyObject *m, visitproc visit, void *arg)
Py_VISIT(state->PySSLSyscallErrorObject);
Py_VISIT(state->PySSLEOFErrorObject);
Py_VISIT(state->err_codes_to_names);
Py_VISIT(state->err_names_to_codes);
Py_VISIT(state->lib_codes_to_names);
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I'm not very familiar with the CPython API, so I wasn't sure if this should be removed now that the objects are no longer exported. I noticed Sock_Type doesn't seem to be exported, but is traversed, while str_library is also unexported but not traversed.

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This is for cycle detection. Sock_Type is a type object, which may contain references that could cause cycles, while I assume str_library is a string, which can never participate in a cycle. So we visit the former but not the latter.

Py_VISIT(state->Sock_Type);

Expand All @@ -6214,7 +6201,6 @@ sslmodule_clear(PyObject *m)
Py_CLEAR(state->PySSLSyscallErrorObject);
Py_CLEAR(state->PySSLEOFErrorObject);
Py_CLEAR(state->err_codes_to_names);
Py_CLEAR(state->err_names_to_codes);
Py_CLEAR(state->lib_codes_to_names);
Py_CLEAR(state->Sock_Type);
Py_CLEAR(state->str_library);
Expand Down
1 change: 0 additions & 1 deletion Modules/_ssl.h
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Expand Up @@ -25,7 +25,6 @@ typedef struct {
PyObject *PySSLEOFErrorObject;
/* Error mappings */
PyObject *err_codes_to_names;
PyObject *err_names_to_codes;
PyObject *lib_codes_to_names;
/* socket type from module CAPI */
PyTypeObject *Sock_Type;
Expand Down