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gh-155888: Fix asyncio writelines() hanging on an empty last chunk #206069

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gh-155888: Fix asyncio writelines() hanging on an empty last chunk

gh-155888: Fix asyncio writelines() hanging on an empty last chunk #206069

Triggered via pull request August 16, 2026 08:42
@deadlovellldeadlovelll
opened #155889
deadlovelll:gh-155888-writelines-hang
Status Success
Total duration 32m 8s
Artifacts 2

build.yml

on: pull_request
Change detection  /  Create context from changed files
24s
Change detection / Create context from changed files
Matrix: Address sanitizer
Matrix: build-macos
Matrix: build-san
Matrix: Ubuntu SSL tests
Matrix: build-ubuntu
Matrix: build-windows
Matrix: cifuzz
Waiting for pending jobs
Docs  /  Doctest
6m 24s
Docs / Doctest
Docs  /  Check EPUB
2m 30s
Docs / Check EPUB
Check if Autoconf files are up to date
22s
Check if Autoconf files are up to date
Check if generated files are up to date
3m 29s
Check if generated files are up to date
C API Docs  /  Check if all C APIs are documented
11s
C API Docs / Check if all C APIs are documented
Ubuntu (installed)  /  build, install and test
6m 2s
Ubuntu (installed) / build, install and test
iOS
19m 59s
iOS
Emscripten  /  build and test
17m 7s
Emscripten / build and test
WASI  /  build and test
5m 17s
WASI / build and test
Hypothesis tests on Ubuntu
10m 7s
Hypothesis tests on Ubuntu
Cross build Linux
4m 4s
Cross build Linux
Docs  /  Docs
2m 17s
Docs / Docs
Matrix: build-android
Docs  /  ...  /  Check for removed HTML IDs
1m 46s
Docs / Check for removed HTML IDs / Check for removed HTML IDs
All required checks pass
4s
All required checks pass
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Annotations

2 errors and 7 warnings
Docs / Docs
Process completed with exit code 2.
Docs / Check EPUB
Process completed with exit code 1.
macOS / build and test (macos-26)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
macOS / build and test (macos-26)
The following taps are not trusted: aws/tap Homebrew is currently ignoring formulae, casks and commands from these taps because tap trust is required. Untap them with: brew untap aws/tap Trust specific formulae, casks and commands with: brew trust --formula <user>/<tap>/<formula> brew trust --cask <user>/<tap>/<cask> brew trust --command <user>/<tap>/<command> Whole-tap trust is broader and includes all current and future formulae, casks and commands from the listed taps. Trust whole taps with: brew trust aws/tap To disable trust checks: export HOMEBREW_NO_REQUIRE_TAP_TRUST=1 This is not recommended and will be removed in a later release. For more information, see: https://docs.brew.sh/Tap-Trust
Hypothesis tests on Ubuntu
No files were found with the provided path: /home/runner/work/cpython/cpython-builddir/.hypothesis/examples/. No artifacts will be uploaded.
macOS (free-threading) / build and test (macos-26)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
macOS (free-threading) / build and test (macos-26)
The following taps are not trusted: aws/tap Homebrew is currently ignoring formulae, casks and commands from these taps because tap trust is required. Untap them with: brew untap aws/tap Trust specific formulae, casks and commands with: brew trust --formula <user>/<tap>/<formula> brew trust --cask <user>/<tap>/<cask> brew trust --command <user>/<tap>/<command> Whole-tap trust is broader and includes all current and future formulae, casks and commands from the listed taps. Trust whole taps with: brew trust aws/tap To disable trust checks: export HOMEBREW_NO_REQUIRE_TAP_TRUST=1 This is not recommended and will be removed in a later release. For more information, see: https://docs.brew.sh/Tap-Trust
macOS / build and test (macos-26-intel)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
macOS / build and test (macos-26-intel)
The following taps are not trusted: aws/tap Homebrew is currently ignoring formulae, casks and commands from these taps because tap trust is required. Untap them with: brew untap aws/tap Trust specific formulae, casks and commands with: brew trust --formula <user>/<tap>/<formula> brew trust --cask <user>/<tap>/<cask> brew trust --command <user>/<tap>/<command> Whole-tap trust is broader and includes all current and future formulae, casks and commands from the listed taps. Trust whole taps with: brew trust aws/tap To disable trust checks: export HOMEBREW_NO_REQUIRE_TAP_TRUST=1 This is not recommended and will be removed in a later release. For more information, see: https://docs.brew.sh/Tap-Trust

Artifacts

Produced during runtime
Name Size Digest
UBSan-logs-default
1.59 KB
sha256:286ae52d4b851716ffa691f0cc9feb4b2b23da3360771827db5808423f15872f
html-ids-head.json.gz
125 KB
sha256:5774e0237d4af60470e12c9daf3da912698c22df2338ab04854577cb328b5514