1 files changed, 14 insertions, 0 deletions
diff --git a/Lib/test/test_struct.py b/Lib/test/test_struct.py
index ab73877..b0f11af 100644
--- a/Lib/test/test_struct.py
+++ b/Lib/test/test_struct.py
@@ -700,6 +700,20 @@ class StructTest(unittest.TestCase):
                 with self.assertRaises(TypeError):
                     cls.x = 1
 
+    @support.cpython_only
+    def test__struct_Struct__new__initialized(self):
+        # See https://github.com/python/cpython/issues/78724
+
+        s = struct.Struct.__new__(struct.Struct, "b")
+        s.unpack_from(b"abcd")
+
+    @support.cpython_only
+    def test__struct_Struct_subclassing(self):
+        class Bob(struct.Struct):
+            pass
+
+        s = Bob("b")
+        s.unpack_from(b"abcd")
 
     def test_issue35714(self):
         # Embedded null characters should not be allowed in format strings.