diff --git a/‎Lib/test/test_marshal.py‎
Lines changed: 0 additions & 2 deletions b/‎Lib/test/test_marshal.py‎
Lines changed: 0 additions & 2 deletions
diff --git a/‎crates/vm/src/stdlib/marshal.rs‎
Lines changed: 17 additions & 6 deletions b/‎crates/vm/src/stdlib/marshal.rs‎
Lines changed: 17 additions & 6 deletions
@@ -233,14 +233,12 @@ def test_bytearray(self):
         new = marshal.loads(marshal.dumps(b))
         self.assertEqual(type(new), bytes)
 
-    @unittest.expectedFailure  # TODO: RUSTPYTHON
     def test_memoryview(self):
         b = memoryview(b"abc")
         self.helper(b)
         new = marshal.loads(marshal.dumps(b))
         self.assertEqual(type(new), bytes)
 
-    @unittest.expectedFailure  # TODO: RUSTPYTHON
     def test_array(self):
         a = array.array('B', b"abc")
         new = marshal.loads(marshal.dumps(a))
 
@@ -99,14 +99,25 @@ mod decl {
     ) -> PyResult<PyBytes> {
         use marshal::Dumpable;
         let mut buf = Vec::new();
-        value
+        let result = value
             .with_dump(|val| marshal::serialize_value(&mut buf, val))
-            .unwrap_or_else(Err)
-            .map_err(|DumpError| {
-                vm.new_not_implemented_error(
-                    "TODO: not implemented yet or marshal unsupported type",
+            .unwrap_or_else(Err);
+        if result.is_err() {
+            // Fall back: try buffer protocol for bytes-like objects
+            if let Ok(bytes_like) = ArgBytesLike::try_from_object(vm, value) {
+                let borrowed = bytes_like.borrow_buf();
+                buf.clear();
+                marshal::serialize_value::<Vec<u8>, PyObjectRef>(
+                    &mut buf,
+                    marshal::DumpableValue::Bytes(&borrowed),
                 )
-            })?;
+                .unwrap_or_else(|DumpError| {});
+                return Ok(PyBytes::from(buf));
+            }
+            return Err(vm.new_not_implemented_error(
+                "TODO: not implemented yet or marshal unsupported type",
+            ));
+        }
         Ok(PyBytes::from(buf))
     }