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bpo-37219: Remove erroneous optimization for differencing an empty set (GH-13965)

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Raymond Hettinger 2019-06-11 01:15:24 -07:00 • committed by GitHub
parent 408a2ef1ac
commit 1f11cf9521
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3 changed files with 7 additions and 8 deletions
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8
Objects/setobject.c
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@ -1456,10 +1456,6 @@ PyDoc_STRVAR(isdisjoint_doc,
static int
set_difference_update_internal(PySetObject *so, PyObject *other)
{
if (PySet_GET_SIZE(so) == 0) {
return 0;
}
if ((PyObject *)so == other)
return set_clear_internal(so);
@ -1534,10 +1530,6 @@ set_difference(PySetObject *so, PyObject *other)
Py_ssize_t pos = 0, other_size;
int rv;
if (PySet_GET_SIZE(so) == 0) {
return set_copy(so, NULL);
}
if (PyAnySet_Check(other)) {
other_size = PySet_GET_SIZE(other);
}