Use a PyBytesWriter for IOBase.readline

[methane]

No description provided.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-06T06:21:18.924359Z	3ef65bb	PR opened

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[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 CentOS9 NoGIL Refleaks 3.x (tier-1) has failed when building commit 0ed5fed.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/#/builders/1610/builds/3980) and take a look at the build logs.
4. Check if the failure is related to this commit (0ed5fed) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/#/builders/1610/builds/3980

Failed tests:

• test_free_threading

Test leaking resources:

• test_free_threading: file descriptors
• test_free_threading: references
• test_free_threading: memory blocks

Summary of the results of the build (if available):

==

Click to see traceback logs

Note: switching to '0ed5fed22af7d2d917feba8cb9fb09d0bbbc4166'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:

  git switch -c <new-branch-name>

Or undo this operation with:

  git switch -

Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at 0ed5fed22af7 io: Use a PyBytesWriter for IOBase.readline (#157024)
Switched to and reset branch 'main'

configure: WARNING: no system libmpdec found; falling back to pure-Python version for the decimal module

make: *** [Makefile:2473: buildbottest] Error 2