70 #define FROM_GC(g) ((PyObject *)(((PyGC_Head *)g)+1))  macro
108     _PyObject_ASSERT_WITH_MSG(FROM_GC(g),  in gc_decref()
309         PyObject *op = FROM_GC(gc);  in append_objects()
351         gc_reset_refs(gc, Py_REFCNT(FROM_GC(gc)));  in update_refs()
370         _PyObject_ASSERT(FROM_GC(gc), gc_get_refs(gc) != 0);  in update_refs()
404         PyObject *op = FROM_GC(gc);  in subtract_refs()
406         (void) traverse(FROM_GC(gc),  in subtract_refs()
438         _PyObject_ASSERT(FROM_GC(prev),  in visit_reachable()
440         _PyObject_ASSERT(FROM_GC(next),  in visit_reachable()
504             PyObject *op = FROM_GC(gc);  in move_unreachable()
554         PyObject *op = FROM_GC(gc);  in untrack_tuples()
569         PyObject *op = FROM_GC(gc);  in untrack_dicts()
600         PyObject *op = FROM_GC(gc);  in move_legacy_finalizers()
637         traverse = Py_TYPE(FROM_GC(gc))->tp_traverse;  in move_legacy_finalizer_reachable()
638         (void) traverse(FROM_GC(gc),  in move_legacy_finalizer_reachable()
678         op = FROM_GC(gc);  in handle_weakrefs()
778         op = FROM_GC(gc);  in handle_weakrefs()
842         PyObject *op = FROM_GC(gc);  in handle_legacy_finalizers()
877         PyObject *op = FROM_GC(gc);  in finalize_garbage()
901         gc_set_refs(gc, Py_REFCNT(FROM_GC(gc)));  in check_garbage()
902         _PyObject_ASSERT(FROM_GC(gc), gc_get_refs(gc) != 0);  in check_garbage()
907         _PyObject_ASSERT_WITH_MSG(FROM_GC(gc),  in check_garbage()
933         PyObject *op = FROM_GC(gc);  in delete_garbage()
1101             debug_cycle("collectable", FROM_GC(gc));  in collect()
1131             debug_cycle("uncollectable", FROM_GC(gc));  in collect()
1463         obj = FROM_GC(gc);  in gc_referrers_for()
1932     _PyObject_Dump(FROM_GC(g));  in _PyGC_Dump()
1991     op = FROM_GC(g);  in _PyObject_GC_Alloc()
2046     op = (PyVarObject *) FROM_GC(g);  in _PyObject_GC_Resize()