Untrack immortal objects from expand_region_transitivity_reachable

sergey-miryanov · sergey-miryanov · commit c9391ebebea9 · 2025-07-25T23:59:50.000+05:00
diff --git a/Python/gc.c b/Python/gc.c
@@ -1396,7 +1396,7 @@ expand_region_transitively_reachable(PyGC_Head *container, PyGC_Head *gc, GCStat
         assert(_PyObject_GC_IS_TRACKED(op));
         if (_Py_IsImmortal(op)) {
             PyGC_Head *next = GC_NEXT(gc);
-            gc_list_move(gc, &gcstate->permanent_generation.head);
+            _PyObject_GC_UNTRACK(op);
             gc = next;
             continue;
         }

Original file line number	Diff line number	Diff line change
`@@ -1396,7 +1396,7 @@ expand_region_transitively_reachable(PyGC_Head container, PyGC_Head gc, GCStat`
`1396`	`1396`	`assert(_PyObject_GC_IS_TRACKED(op));`
`1397`	`1397`	`if (_Py_IsImmortal(op)) {`
`1398`	`1398`	`PyGC_Head *next = GC_NEXT(gc);`
`1399`		`- gc_list_move(gc, &gcstate->permanent_generation.head);`
	`1399`	`+ _PyObject_GC_UNTRACK(op);`
`1400`	`1400`	`gc = next;`
`1401`	`1401`	`continue;`
`1402`	`1402`	`}`