[BUG]: patch_all breaks issubclass

[ppsmilesi]

Tracer Version(s)

2.18.1

Python Version(s)

Python 3.11.1

Pip Version(s)

pip 25.1.1

Bug Report

Hello !

I got a issubclass TypeError when using Datadog APM with ddtrace.patch_all.

The stacktrace of the below reproduction code:

Traceback (most recent call last):
  File "/Users/paulmilesi/Repos/api/ddtrace_issue.py", line 17, in <module>
    issubclass(psycopg.AsyncCursor, SomeClass)
  File "<frozen abc>", line 123, in __subclasscheck__
TypeError: issubclass() arg 1 must be a class

In my app, patch_all patches psycopg.AsyncCursor and my app then crashes when running issubclass on psycopg.AsyncCursor against a class subclassing abc.ABC. patch_all uses wrapt.FunctionWrapper to patch psycopg.AsyncCursor and there a wrapt/stdlib issue when checking against ABC classes.
I am not sure you can do anything about it...

Please find the related issues in wrapt and python stdlib too:

• Cannot use issubclass on decorated class derived from abc.ABC GrahamDumpleton/wrapt#130
• ABCMeta.__subclasscheck__() doesn't support duck typing. python/cpython#89010

Reproduction Code

import abc

from ddtrace import patch_all

patch_all()

import psycopg


class SomeClass(abc.ABC):
    @abc.abstractmethod
    def some_method(self):
        pass


issubclass(psycopg.AsyncCursor, SomeClass)

Error Logs

No response

Libraries in Use

psycopg==3.2.9

Operating System

Darwin Mac.lan 24.1.0 Darwin Kernel Version 24.1.0