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-rw-r--r--Objects/stringobject.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/Objects/stringobject.c b/Objects/stringobject.c
index ce24154..a0e2837 100644
--- a/Objects/stringobject.c
+++ b/Objects/stringobject.c
@@ -1880,10 +1880,21 @@ string_find_internal(PyStringObject *self, PyObject *args, int dir)
const char *sub;
Py_ssize_t sub_len;
Py_ssize_t start=0, end=PY_SSIZE_T_MAX;
+ PyObject *obj_start=Py_None, *obj_end=Py_None;
- if (!PyArg_ParseTuple(args, "O|O&O&:find/rfind/index/rindex", &subobj,
- _PyEval_SliceIndex, &start, _PyEval_SliceIndex, &end))
+ if (!PyArg_ParseTuple(args, "O|OO:find/rfind/index/rindex", &subobj,
+ &obj_start, &obj_end))
return -2;
+ /* To support None in "start" and "end" arguments, meaning
+ the same as if they were not passed.
+ */
+ if (obj_start != Py_None)
+ if (!_PyEval_SliceIndex(obj_start, &start))
+ return -2;
+ if (obj_end != Py_None)
+ if (!_PyEval_SliceIndex(obj_end, &end))
+ return -2;
+
if (PyString_Check(subobj)) {
sub = PyString_AS_STRING(subobj);
sub_len = PyString_GET_SIZE(subobj);