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Make the various iterators' "setstate" sliently and consistently clip the

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index.  This avoids the possibility of setting an iterator to an invalid
state.
This commit is contained in:
Kristján Valur Jónsson 2014-03-05 15:23:07 +00:00
commit c5cc5011ac
8 changed files with 66 additions and 15 deletions
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10
Objects/unicodeobject.c
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@ -15196,9 +15196,13 @@ unicodeiter_setstate(unicodeiterobject *it, PyObject *state)
Py_ssize_t index = PyLong_AsSsize_t(state);
if (index == -1 && PyErr_Occurred())
return NULL;
if (index < 0)
index = 0;
it->it_index = index;
if (it->it_seq != NULL) {
if (index < 0)
index = 0;
else if (index > PyUnicode_GET_LENGTH(it->it_seq))
index = PyUnicode_GET_LENGTH(it->it_seq); /* iterator truncated */
it->it_index = index;
}
Py_RETURN_NONE;
}