mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-09-26 18:29:57 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 10

[3.12] gh-111049: Fix crash during garbage collection of the BytesIO buffer object (GH-111221) (GH-113096)

Browse source 
(cherry picked from commit bb36f72efc)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
This commit is contained in:
Miss Islington (bot) 2023-12-14 11:28:57 +01:00 • committed by GitHub
parent 916ef4fbee
commit 9f5209f3c2
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
3 changed files with 27 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

21
Lib/test/test_memoryio.py
View file

@ -6,10 +6,12 @@ BytesIO -- for bytes
import unittest
from test import support
import gc
import io
import _pyio as pyio
import pickle
import sys
import weakref
class IntLike:
def __init__(self, num):
@ -477,6 +479,25 @@ class PyBytesIOTest(MemoryTestMixin, MemorySeekTestMixin, unittest.TestCase):
buf2.release()
memio.write(b'x')
def test_getbuffer_gc_collect(self):
memio = self.ioclass(b"1234567890")
buf = memio.getbuffer()
memiowr = weakref.ref(memio)
bufwr = weakref.ref(buf)
# Create a reference loop.
a = [buf]
a.append(a)
# The Python implementation emits an unraisable exception.
with support.catch_unraisable_exception():
del memio
del buf
del a
# The C implementation emits an unraisable exception.
with support.catch_unraisable_exception():
gc.collect()
self.assertIsNone(memiowr())
self.assertIsNone(bufwr())
def test_read1(self):
buf = self.buftype("1234567890")
self.assertEqual(self.ioclass(buf).read1(), buf)