1 files changed, 19 insertions, 0 deletions
diff --git a/Lib/test/test_memoryview.py b/Lib/test/test_memoryview.py
index e7df8a7..bd9d0d4 100644
--- a/Lib/test/test_memoryview.py
+++ b/Lib/test/test_memoryview.py
@@ -360,6 +360,25 @@ class AbstractMemoryTests:
             self.assertEqual(list(reversed(m)), aslist)
             self.assertEqual(list(reversed(m)), list(m[::-1]))
 
+    def test_issue22668(self):
+        m = memoryview(bytes(range(8)))
+        b = m.cast('H')
+        c = b[0:2]
+        d = memoryview(b)
+
+        del b
+    
+        self.assertEqual(c[0], 256)
+        self.assertEqual(d[0], 256)
+        self.assertEqual(c.format, "H")
+        self.assertEqual(d.format, "H")
+    
+        _ = m.cast('I')
+        self.assertEqual(c[0], 256)
+        self.assertEqual(d[0], 256)
+        self.assertEqual(c.format, "H")
+        self.assertEqual(d.format, "H")
+
 
 # Variations on source objects for the buffer: bytes-like objects, then arrays
 # with itemsize > 1.