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gh-101892: Fix SystemError when a callable iterator call exhausts the iterator (GH-101896)

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(cherry picked from commit 705487c655)

Co-authored-by: Raj <51259329+workingpayload@users.noreply.github.com>
Co-authored-by: Oleg Iarygin <oleg@arhadthedev.net>
This commit is contained in:
Miss Islington (bot) 2023-03-04 06:46:17 -08:00 • committed by GitHub
parent 00791f23b7
commit 06a3bb8c94
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3 changed files with 30 additions and 2 deletions
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4
Objects/iterobject.c
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@ -222,7 +222,7 @@ calliter_iternext(calliterobject *it)
}
result = _PyObject_CallNoArgs(it->it_callable);
if (result != NULL) {
if (result != NULL && it->it_sentinel != NULL){
int ok;
ok = PyObject_RichCompareBool(it->it_sentinel, result, Py_EQ);
@ -230,7 +230,6 @@ calliter_iternext(calliterobject *it)
return result; /* Common case, fast path */
}
Py_DECREF(result);
if (ok > 0) {
Py_CLEAR(it->it_callable);
Py_CLEAR(it->it_sentinel);
@ -241,6 +240,7 @@ calliter_iternext(calliterobject *it)
Py_CLEAR(it->it_callable);
Py_CLEAR(it->it_sentinel);
}
Py_XDECREF(result);
return NULL;
}