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check for NULL tp_as_mapping in PySequence_(Get/Set/Del)Slice #9834

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This commit is contained in:
Benjamin Peterson 2010-09-11 16:02:03 +00:00
parent e861598dcb
commit 568867a6f2
2 changed files with 10 additions and 3 deletions
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6
Objects/abstract.c
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@ -1612,7 +1612,7 @@ PySequence_GetSlice(PyObject *s, Py_ssize_t i1, Py_ssize_t i2)
if (!s) return null_error();
mp = s->ob_type->tp_as_mapping;
if (mp->mp_subscript) {
if (mp && mp->mp_subscript) {
PyObject *res;
PyObject *slice = _PySlice_FromIndices(i1, i2);
if (!slice)
@ -1690,7 +1690,7 @@ PySequence_SetSlice(PyObject *s, Py_ssize_t i1, Py_ssize_t i2, PyObject *o)
}
mp = s->ob_type->tp_as_mapping;
if (mp->mp_ass_subscript) {
if (mp && mp->mp_ass_subscript) {
int res;
PyObject *slice = _PySlice_FromIndices(i1, i2);
if (!slice)
@ -1715,7 +1715,7 @@ PySequence_DelSlice(PyObject *s, Py_ssize_t i1, Py_ssize_t i2)
}
mp = s->ob_type->tp_as_mapping;
if (mp->mp_ass_subscript) {
if (mp && mp->mp_ass_subscript) {
int res;
PyObject *slice = _PySlice_FromIndices(i1, i2);
if (!slice)