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bpo-42006: Stop using PyDict_GetItem, PyDict_GetItemString and _PyDict_GetItemId. (GH-22648)

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These functions are considered not safe because they suppress all internal errors
and can return wrong result.  PyDict_GetItemString and _PyDict_GetItemId can
also silence current exception in rare cases.

Remove no longer used _PyDict_GetItemId.
Add _PyDict_ContainsId and rename _PyDict_Contains into
_PyDict_Contains_KnownHash.
This commit is contained in:
Serhiy Storchaka 2020-10-26 08:43:39 +02:00 • committed by GitHub
parent 96a9eed245
commit fb5db7ec58
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17 changed files with 259 additions and 142 deletions
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8
Modules/_threadmodule.c
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@ -816,10 +816,14 @@ local_clear(localobject *self)
for(tstate = PyInterpreterState_ThreadHead(tstate->interp);
tstate;
tstate = PyThreadState_Next(tstate))
if (tstate->dict && PyDict_GetItem(tstate->dict, self->key)) {
if (PyDict_DelItem(tstate->dict, self->key)) {
if (tstate->dict) {
PyObject *v = _PyDict_Pop(tstate->dict, self->key, Py_None);
if (v == NULL) {
PyErr_Clear();
}
else {
Py_DECREF(v);
}
}
}
return 0;