Maximum recursion level reached when circular reference

[cscps]

import ujson
class C1:
    def __init__(self, r):
        self.r = r

class C2:
    def __init__(self):
        self.r = C1(self)

>>>print(ujson.dumps(C2()))


OverflowError: Maximum recursion level reached

Maybe there should be an arg to set the max recursion or check circular reference as built-in json library does

[hugovk]

Similar to #258, I now get a repr problem with UltraJSON 2.0.0 on macOS Mojave/Python 3.8.1:

>>> print(ujson.dumps(C2()))
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: � is not JSON serializable

[hugovk]

This has been fixed in UltraJSON 2.0 by 53f85b1:

Removed generic serialization of objects/iterables

The behavior of ujson has always been to try to serialize all objects in
any way possible. This has been quite a deviation from other json
libraries, including Pythons standard json module, and the source of a
lot of confusion and bugs. Removing this quirk moves ultrajson closer to
the expected behavior.

Instead of trying to coerce serialization ultrajson will now throw a
TypeError: "repr(obj) is not JSON serializable" exception.

The "�" bit is another issue: #258.