https://github.com/python/cpython/commit/2d4049da1f61df5cb4314d7e10b54fa5568... commit: 2d4049da1f61df5cb4314d7e10b54fa556880b0e branch: 3.9 author: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> committer: miss-islington <31488909+miss-islington@users.noreply.github.com> date: 2021-12-29T21:29:19-08:00 summary: bpo-46085: Fix iterator cache mechanism of OrderedDict. (GH-30290) (cherry picked from commit fb44d0589615590b1e7895ba78a038e96b15a219) Co-authored-by: Dong-hee Na <donghee.na@python.org> files: A Misc/NEWS.d/next/Core and Builtins/2021-12-30-00-23-41.bpo-46085.bDuJqu.rst M Objects/odictobject.c diff --git a/Misc/NEWS.d/next/Core and Builtins/2021-12-30-00-23-41.bpo-46085.bDuJqu.rst b/Misc/NEWS.d/next/Core and Builtins/2021-12-30-00-23-41.bpo-46085.bDuJqu.rst new file mode 100644 index 0000000000000..a2093f75c3b62 --- /dev/null +++ b/Misc/NEWS.d/next/Core and Builtins/2021-12-30-00-23-41.bpo-46085.bDuJqu.rst @@ -0,0 +1 @@ +Fix iterator cache mechanism of :class:`OrderedDict`. diff --git a/Objects/odictobject.c b/Objects/odictobject.c index b9f2169a72a8a..f3980aba93776 100644 --- a/Objects/odictobject.c +++ b/Objects/odictobject.c @@ -1290,6 +1290,7 @@ PyDoc_STRVAR(odict_reversed__doc__, "od.__reversed__() <==> reversed(od)"); #define _odict_ITER_REVERSED 1 #define _odict_ITER_KEYS 2 #define _odict_ITER_VALUES 4 +#define _odict_ITER_ITEMS (_odict_ITER_KEYS|_odict_ITER_VALUES) /* forward */ static PyObject * odictiter_new(PyODictObject *, int); @@ -1708,7 +1709,7 @@ odictiter_dealloc(odictiterobject *di) _PyObject_GC_UNTRACK(di); Py_XDECREF(di->di_odict); Py_XDECREF(di->di_current); - if (di->kind & (_odict_ITER_KEYS | _odict_ITER_VALUES)) { + if ((di->kind & _odict_ITER_ITEMS) == _odict_ITER_ITEMS) { Py_DECREF(di->di_result); } PyObject_GC_Del(di); @@ -1914,15 +1915,16 @@ odictiter_new(PyODictObject *od, int kind) if (di == NULL) return NULL; - if (kind & (_odict_ITER_KEYS | _odict_ITER_VALUES)){ + if ((kind & _odict_ITER_ITEMS) == _odict_ITER_ITEMS) { di->di_result = PyTuple_Pack(2, Py_None, Py_None); if (di->di_result == NULL) { Py_DECREF(di); return NULL; } } - else + else { di->di_result = NULL; + } di->kind = kind; node = reversed ? _odict_LAST(od) : _odict_FIRST(od);