Make access to dict->ma_used relaxed.

Kronuz · Kronuz · commit 2eeb71a80e96 · 2024-05-23T19:06:29.000-07:00
diff --git a/Objects/dictobject.c b/Objects/dictobject.c
@@ -4972,7 +4972,7 @@ dictiter_new(PyDictObject *dict, PyTypeObject *itertype)
         return NULL;
     }
     di->di_dict = (PyDictObject*)Py_NewRef(dict);
-    used = FT_ATOMIC_LOAD_SSIZE(dict->ma_used);
+    used = FT_ATOMIC_LOAD_SSIZE_RELAXED(dict->ma_used);
     di->di_used = used;
     di->len = used;
     if (itertype == &PyDictRevIterKey_Type ||

Original file line number	Diff line number	Diff line change
`@@ -4972,7 +4972,7 @@ dictiter_new(PyDictObject dict, PyTypeObject itertype)`
`4972`	`4972`	`return NULL;`
`4973`	`4973`	`}`
`4974`	`4974`	`di->di_dict = (PyDictObject*)Py_NewRef(dict);`
`4975`		`- used = FT_ATOMIC_LOAD_SSIZE(dict->ma_used);`
	`4975`	`+ used = FT_ATOMIC_LOAD_SSIZE_RELAXED(dict->ma_used);`
`4976`	`4976`	`di->di_used = used;`
`4977`	`4977`	`di->len = used;`
`4978`	`4978`	`if (itertype == &PyDictRevIterKey_Type \|\|`