bpo-43908: Make array.array type immutable (GH-25696)
Co-authored-by: Victor Stinner <vstinner@python.org>
diff --git a/Modules/arraymodule.c b/Modules/arraymodule.c
index f532678..367621f 100644
--- a/Modules/arraymodule.c
+++ b/Modules/arraymodule.c
@@ -2847,7 +2847,8 @@ static PyType_Slot array_slots[] = {
static PyType_Spec array_spec = {
.name = "array.array",
.basicsize = sizeof(arrayobject),
- .flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
+ .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
+ Py_TPFLAGS_IMMUTABLETYPE),
.slots = array_slots,
};