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Issue8757: Implicit set-to-frozenset conversion not thread-safe.

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This commit is contained in:
Raymond Hettinger 2010-08-06 09:52:17 +00:00
parent 4f3086f264
commit 38bf2ccf4c
1 changed files with 3 additions and 9 deletions
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12
Objects/setobject.c
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@ -1846,12 +1846,10 @@ set_contains(PySetObject *so, PyObject *key)
if (!PySet_Check(key) || !PyErr_ExceptionMatches(PyExc_TypeError)) if (!PySet_Check(key) || !PyErr_ExceptionMatches(PyExc_TypeError))
return -1; return -1;
PyErr_Clear(); PyErr_Clear();
tmpkey = make_new_set(&PyFrozenSet_Type, NULL); tmpkey = make_new_set(&PyFrozenSet_Type, key);
if (tmpkey == NULL) if (tmpkey == NULL)
return -1; return -1;
set_swap_bodies((PySetObject *)tmpkey, (PySetObject *)key);
rv = set_contains(so, tmpkey); rv = set_contains(so, tmpkey);
set_swap_bodies((PySetObject *)tmpkey, (PySetObject *)key);
Py_DECREF(tmpkey); Py_DECREF(tmpkey);
} }
return rv; return rv;
@ -1881,12 +1879,10 @@ set_remove(PySetObject *so, PyObject *key)
if (!PySet_Check(key) || !PyErr_ExceptionMatches(PyExc_TypeError)) if (!PySet_Check(key) || !PyErr_ExceptionMatches(PyExc_TypeError))
return NULL; return NULL;
PyErr_Clear(); PyErr_Clear();
tmpkey = make_new_set(&PyFrozenSet_Type, NULL); tmpkey = make_new_set(&PyFrozenSet_Type, key);
if (tmpkey == NULL) if (tmpkey == NULL)
return NULL; return NULL;
set_swap_bodies((PySetObject *)tmpkey, (PySetObject *)key);
rv = set_discard_key(so, tmpkey); rv = set_discard_key(so, tmpkey);
set_swap_bodies((PySetObject *)tmpkey, (PySetObject *)key);
Py_DECREF(tmpkey); Py_DECREF(tmpkey);
if (rv == -1) if (rv == -1)
return NULL; return NULL;
@ -1915,12 +1911,10 @@ set_discard(PySetObject *so, PyObject *key)
if (!PySet_Check(key) || !PyErr_ExceptionMatches(PyExc_TypeError)) if (!PySet_Check(key) || !PyErr_ExceptionMatches(PyExc_TypeError))
return NULL; return NULL;
PyErr_Clear(); PyErr_Clear();
tmpkey = make_new_set(&PyFrozenSet_Type, NULL); tmpkey = make_new_set(&PyFrozenSet_Type, key);
if (tmpkey == NULL) if (tmpkey == NULL)
return NULL; return NULL;
set_swap_bodies((PySetObject *)tmpkey, (PySetObject *)key);
result = set_discard(so, tmpkey); result = set_discard(so, tmpkey);
set_swap_bodies((PySetObject *)tmpkey, (PySetObject *)key);
Py_DECREF(tmpkey); Py_DECREF(tmpkey);
return result; return result;
} }