Caching a type object does not work

[char101]

Hi,

This code works with cachebox 5.1.0 but failed with 5.2.1.

from cachebox import LRUCache, cached

@cached(LRUCache(maxsize=100))
def make_recordclass():
    class A:
        pass
    return A

make_recordclass()

with these errors

EXCEPTION
Traceback (most recent call last):
  File "R:\recordclass\test.py", line 9, in <module>
    line: make_recordclass()
    locals:
      make_recordclass = <local> <function __main__.make_recordclass>
  File "A:\Lang\python\3.14\Lib\site-packages\cachebox\utils.py", line 335, in make_recordclass
    line: _cache[key] = result
  File "A:\Lang\python\3.14\Lib\site-packages\cachebox\_cachebox.py", line 1019, in LRUCache.__setitem__      
    line: self.insert(key, value)
    locals:
      self = <local> cachebox._cachebox.LRUCache[0/100]({}), len = 0
      key = <local> ()
      value = <local> <class __main__.make_recordclass.<locals>.A>
  File "A:\Lang\python\3.14\Lib\site-packages\cachebox\_cachebox.py", line 941, in LRUCache.insert
    line: return self._raw.insert(key, value)
    locals:
      self = <local> cachebox._cachebox.LRUCache[0/100]({}), len = 0
      self._raw = <local> <cachebox._core.LRUCache object at 0x000001B79563F7C0>, len = 0
      key = <local> ()
      value = <local> <class __main__.make_recordclass.<locals>.A>
TypeError: unbound method object.__sizeof__() needs an argument

For context, I was caching a named tuple class using the recordclas library for database result rows based on the column names.

[char101]

Calling __sizeof__ directly does not work with type object.

import sys

class A:
    pass

# print(A.__sizeof__()) # TypeError: unbound method object.__sizeof__() needs an argument
print(sys.getsizeof(A)) # 1712 in 3.13, 1720 in 3.14