pythongh-118519: Fix empty weakref list check (python#118520)

DinoV · web-flow · commit e54b0c8a4ad6 · 2024-05-02T13:03:29.000-07:00
Fix empty list check
diff --git a/Objects/weakrefobject.c b/Objects/weakrefobject.c
@@ -988,7 +988,7 @@ PyObject_ClearWeakRefs(PyObject *object)
     }
 
     list = GET_WEAKREFS_LISTPTR(object);
-    if (FT_ATOMIC_LOAD_PTR(list) == NULL) {
+    if (FT_ATOMIC_LOAD_PTR(*list) == NULL) {
         // Fast path for the common case
         return;
     }

Original file line number	Diff line number	Diff line change
`@@ -988,7 +988,7 @@ PyObject_ClearWeakRefs(PyObject *object)`
`988`	`988`	`}`
`989`	`989`
`990`	`990`	`list = GET_WEAKREFS_LISTPTR(object);`
`991`		`- if (FT_ATOMIC_LOAD_PTR(list) == NULL) {`
	`991`	`+ if (FT_ATOMIC_LOAD_PTR(*list) == NULL) {`
`992`	`992`	`// Fast path for the common case`
`993`	`993`	`return;`
`994`	`994`	`}`