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-rw-r--r--Modules/_struct.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/Modules/_struct.c b/Modules/_struct.c
index 5984bb6..f759f0b 100644
--- a/Modules/_struct.c
+++ b/Modules/_struct.c
@@ -1646,6 +1646,7 @@ unpackiter_dealloc(unpackiterobject *self)
static int
unpackiter_traverse(unpackiterobject *self, visitproc visit, void *arg)
{
+ Py_VISIT(Py_TYPE(self));
Py_VISIT(self->so);
Py_VISIT(self->buf.obj);
return 0;