--- /dev/null
+alt/test_serialization_alt3.nit:49,1--68,3: Warning: superfluous use of `noserialize`.
+# Nit:
+<A: true a 0.123 1234 asdf false>
+
+# Json:
+{"__kind": "obj", "__id": 0, "__class": "A", "b": true, "c": {"__kind": "char", "__val": "a"}, "f": 0.123, "i": 1234, "s": "asdf", "n": null, "array": {"__kind": "obj", "__id": 1, "__class": "Array", "__length": 3, "__items": [88, "hello", null]}}
+
+# Nit:
+<B: <A: false b 123.123 2345 hjkl false> 1111 qwer>
+
+# Json:
+{"__kind": "obj", "__id": 0, "__class": "B", "b": false, "c": {"__kind": "char", "__val": "b"}, "f": 123.123, "i": 2345, "s": "hjkl", "n": null, "array": {"__kind": "obj", "__id": 1, "__class": "Array", "__length": 3, "__items": [88, "hello", null]}}
+
+# Nit:
+<C: <A: true a 0.123 1234 asdf false> <B: <A: false b 123.123 2345 hjkl false> 1111 qwer>>
+
+# Json:
+{"__kind": "obj", "__id": 0, "__class": "C", "a": {"__kind": "obj", "__id": 1, "__class": "A", "b": true, "c": {"__kind": "char", "__val": "a"}, "f": 0.123, "i": 1234, "s": "asdf", "n": null, "array": {"__kind": "obj", "__id": 2, "__class": "Array", "__length": 3, "__items": [88, "hello", null]}}, "b": {"__kind": "obj", "__id": 3, "__class": "B", "b": false, "c": {"__kind": "char", "__val": "b"}, "f": 123.123, "i": 2345, "s": "hjkl", "n": null, "array": {"__kind": "obj", "__id": 4, "__class": "Array", "__length": 3, "__items": [88, "hello", null]}}, "aa": {"__kind": "ref", "__id": 1}}
+
+# Nit:
+<D: <B: <A: false b 123.123 2345 new line ->
+<- false> 1111 f"\r\/> true>
+
+# Json:
+{"__kind": "obj", "__id": 0, "__class": "D", "b": false, "c": {"__kind": "char", "__val": "b"}, "f": 123.123, "i": 2345, "s": "new line ->\n<-", "n": null, "array": {"__kind": "obj", "__id": 1, "__class": "Array", "__length": 3, "__items": [88, "hello", null]}, "d": {"__kind": "ref", "__id": 0}}
+