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-rw-r--r--Objects/tupleobject.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/Objects/tupleobject.c b/Objects/tupleobject.c
index becdf70598..89c393ccc5 100644
--- a/Objects/tupleobject.c
+++ b/Objects/tupleobject.c
@@ -917,7 +917,8 @@ PyTypeObject PyTuple_Type = {
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
- Py_TPFLAGS_BASETYPE | Py_TPFLAGS_TUPLE_SUBCLASS, /* tp_flags */
+ Py_TPFLAGS_BASETYPE | Py_TPFLAGS_TUPLE_SUBCLASS |
+ _Py_TPFLAGS_MATCH_SELF, /* tp_flags */
tuple_new__doc__, /* tp_doc */
(traverseproc)tupletraverse, /* tp_traverse */
0, /* tp_clear */