bpo-29864: Don't use Py_SIZE for dict object. (#747) (#750)

serhiy-storchaka · web-flow · commit af839fe2fef1 · 2017-03-22T07:45:23.000+02:00
diff --git a/Objects/dictobject.c b/Objects/dictobject.c
@@ -1929,7 +1929,7 @@ _PyDict_FromKeys(PyObject *cls, PyObject *iterable, PyObject *value)
             PyObject *key;
             Py_hash_t hash;
 
-            if (dictresize(mp, ESTIMATE_SIZE(Py_SIZE(iterable)))) {
+            if (dictresize(mp, ESTIMATE_SIZE(((PyDictObject *)iterable)->ma_used))) {
                 Py_DECREF(d);
                 return NULL;
             }

Original file line number	Diff line number	Diff line change
`@@ -1929,7 +1929,7 @@ _PyDict_FromKeys(PyObject cls, PyObject iterable, PyObject *value)`
`1929`	`1929`	`PyObject *key;`
`1930`	`1930`	`Py_hash_t hash;`
`1931`	`1931`
`1932`		`- if (dictresize(mp, ESTIMATE_SIZE(Py_SIZE(iterable)))) {`
	`1932`	`+ if (dictresize(mp, ESTIMATE_SIZE(((PyDictObject *)iterable)->ma_used))) {`
`1933`	`1933`	`Py_DECREF(d);`
`1934`	`1934`	`return NULL;`
`1935`	`1935`	`}`