diff options
Diffstat (limited to 'Objects/typeobject.c')
| -rw-r--r-- | Objects/typeobject.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/Objects/typeobject.c b/Objects/typeobject.c index 030dc1f..0e54fe6 100644 --- a/Objects/typeobject.c +++ b/Objects/typeobject.c @@ -2645,9 +2645,10 @@ type_new(PyTypeObject *metatype, PyObject *args, PyObject *kwds) } type->tp_dealloc = subtype_dealloc; - /* Enable GC unless there are really no instance variables possible */ - if (!(type->tp_basicsize == sizeof(PyObject) && - type->tp_itemsize == 0)) + /* Enable GC unless this class is not adding new instance variables and + the base class did not use GC. */ + if ((base->tp_flags & Py_TPFLAGS_HAVE_GC) || + type->tp_basicsize > base->tp_basicsize) type->tp_flags |= Py_TPFLAGS_HAVE_GC; /* Always override allocation strategy to use regular heap */ |