bpo-44562: Use PyType_GenericAlloc in Py_GenericAlias (pythonGH-27021)

pablogsal · serhiy-storchaka · web-flow · commit b324c4c5f763 · 2021-07-05T12:10:53.000+01:00
* bpo-44562: Use PyType_GenericAlloc in Py_GenericAlias

* Update Objects/genericaliasobject.c

Co-authored-by: Serhiy Storchaka &lt;storchaka@gmail.com&gt;

Co-authored-by: Serhiy Storchaka &lt;storchaka@gmail.com&gt;
diff --git a/Objects/genericaliasobject.c b/Objects/genericaliasobject.c
@@ -646,11 +646,11 @@ PyTypeObject Py_GenericAliasType = {
 PyObject *
 Py_GenericAlias(PyObject *origin, PyObject *args)
 {
-    gaobject *alias = PyObject_GC_New(gaobject, &Py_GenericAliasType);
+    gaobject *alias = (gaobject*) PyType_GenericAlloc(
+            (PyTypeObject *)&Py_GenericAliasType, 0);
     if (alias == NULL) {
         return NULL;
     }
-    _PyObject_GC_TRACK(alias);
     if (!setup_ga(alias, origin, args)) {
         Py_DECREF(alias);
         return NULL;

Original file line number	Diff line number	Diff line change
`@@ -646,11 +646,11 @@ PyTypeObject Py_GenericAliasType = {`
`646`	`646`	`PyObject *`
`647`	`647`	`Py_GenericAlias(PyObject origin, PyObject args)`
`648`	`648`	`{`
`649`		`- gaobject *alias = PyObject_GC_New(gaobject, &Py_GenericAliasType);`
	`649`	`+ gaobject alias = (gaobject) PyType_GenericAlloc(`
	`650`	`+ (PyTypeObject *)&Py_GenericAliasType, 0);`
`650`	`651`	`if (alias == NULL) {`
`651`	`652`	`return NULL;`
`652`	`653`	`}`
`653`		`- _PyObject_GC_TRACK(alias);`
`654`	`654`	`if (!setup_ga(alias, origin, args)) {`
`655`	`655`	`Py_DECREF(alias);`
`656`	`656`	`return NULL;`