[New-bugs-announce] [issue44719] Incorrect callable object crashes Python 3.11.0a0

[Xinmeng Xia]

New submission from Xinmeng Xia <xiaxm at smail.nju.edu.cn>:

This program can trigger "Aborted (core dumped)" on Python 3.9.0, Python 3.8.0, Python3.10.0a2.  It trigger " segmentation fault" on the master (Python 3.11.0a0).

==================================
import weakref

class Object:
    def __init__(self, arg):
        self.arg = arg

def test_set_callback_attribute():
    x = Object(1)
    callback = lambda ref: None
    callback = weakref.ref(callback, x)
    with test_set_callback_attribute():
        pass

test_set_callback_attribute()
==================================

Crashes on the master (Python 3.11.0a0)
------------------------------------------------------------
.....
Traceback (most recent call last):
  File "/home/xxm/Desktop/IFuzzer/bugs/CPython/IFuzzer/test_weakref/test_set_callback_attribute__1.py", line 26, in test_set_callback_attribute
    callback = weakref.ref(callback, x)
    ^^^^^^^^
TypeError: 'Object' object is not callable
Exception ignored in: <__main__.Object object at 0x7f3e2d56ca90>
Traceback (most recent call last):
  File "/home/xxm/Desktop/IFuzzer/bugs/CPython/IFuzzer/test_weakref/test_set_callback_attribute__1.py", line 26, in test_set_callback_attribute
Segmentation fault (core dumped)
--------------------------------------------------------------


Crashes on the older version of Python
-----------------------------------------------------------
File "/home/xxm/Desktop/IFuzzer/bugs/CPython/IFuzzer/test_weakref/test_set_callback_attribute__1.py", line 27 in test_set_callback_attribute
File "/home/xxm/Desktop/IFuzzer/bugs/CPython/IFuzzer/test_weakref/test_set_callback_attribute__1.py", line 27 in test_set_callback_attribute
File "/home/xxm/Desktop/IFuzzer/bugs/CPython/IFuzzer/test_weakref/test_set_callback_attribute__1.py", line 27 in test_set_callback_attribute
File "/home/xxm/Desktop/IFuzzer/bugs/CPython/IFuzzer/test_weakref/test_set_callback_attribute__1.py", line 27 in test_set_callback_attribute
File "/home/xxm/Desktop/IFuzzer/bugs/CPython/IFuzzer/test_weakref/test_set_callback_attribute__1.py", line 27 in test_set_callback_attribute
File "/home/xxm/Desktop/IFuzzer/bugs/CPython/IFuzzer/test_weakref/test_set_callback_attribute__1.py", line 27 in test_set_callback_attribute
File "/home/xxm/Desktop/IFuzzer/bugs/CPython/IFuzzer/test_weakref/test_set_callback_attribute__1.py", line 27 in test_set_callback_attribute
...
Aborted (core dumped)
---------------------------------------------------------------

System: Ubuntu 16.04

----------
components: Interpreter Core
messages: 398028
nosy: xxm
priority: normal
severity: normal
status: open
title: Incorrect callable object crashes Python 3.11.0a0
type: crash
versions: Python 3.11

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue44719>
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