diff options
Diffstat (limited to 'Include/objimpl.h')
| -rw-r--r-- | Include/objimpl.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Include/objimpl.h b/Include/objimpl.h index 93c5b23..9c13e71 100644 --- a/Include/objimpl.h +++ b/Include/objimpl.h @@ -271,7 +271,9 @@ extern DL_IMPORT(void) _PyGC_Dump(PyGC_Head *); #endif /* WITH_CYCLE_GC */ /* Test if a type supports weak references */ -#define PyType_SUPPORTS_WEAKREFS(t) ((t)->tp_weaklistoffset > 0) +#define PyType_SUPPORTS_WEAKREFS(t) \ + (PyType_HasFeature((t), Py_TPFLAGS_HAVE_WEAKREFS) \ + && ((t)->tp_weaklistoffset > 0)) #define PyObject_GET_WEAKREFS_LISTPTR(o) \ ((PyObject **) (((char *) (o)) + (o)->ob_type->tp_weaklistoffset)) |