create_builtin() in _imp module trigger segfault if taking a builtin object as input

xiaxinmeng

Crash report

In the following test program, _imp.create_builtin takes a object A as input. The object instance the name attribute as "self" at "self.name = self". This action triggers a segfault on CPython 3.10.7 and CPython 3.10.7. Similarly, if self.name = other keywords, e.g.,int, print, the program also crashes. It may need a checker for _imp.create_builtin to avoid keywords.

import _imp

class FakeSpec:
	def __init__(self, name):
		self.name = self

A = FakeSpec("time")

imp_time = _imp.create_builtin(A)

Error messages

Expected behavior on CPython 3.9.0

Traceback (most recent call last):
  File "/home/xxm/Desktop/imp.py", line 9, in <module>
    imp_time = _imp.create_builtin(A)
TypeError: bad argument type for built-in operation

Unexpected Behavior on CPython 3.10.8
Segmentation fault(core dumped)

Your environment

CPython versions tested on:Python 3.10.8, Python 3.10.7
Operating system and architecture: [GCC 7.5.0] on linux