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gh-156939: Detect buffer overflow in PyBytesWriter in debug mode #208277

gh-156939: Detect buffer overflow in PyBytesWriter in debug mode

gh-156939: Detect buffer overflow in PyBytesWriter in debug mode #208277

Triggered via pull request September 4, 2026 14:46
Status Cancelled
Total duration 24m 41s
Artifacts 2

build.yml

on: pull_request
Change detection  /  Create context from changed files
16s
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
Docs  /  Doctest
2m 11s
Docs / Doctest
Docs  /  Check EPUB
2m 33s
Docs / Check EPUB
Check if Autoconf files are up to date
27s
Check if Autoconf files are up to date
Check if generated files are up to date
4m 39s
Check if generated files are up to date
C API Docs  /  Check if all C APIs are documented
12s
C API Docs / Check if all C APIs are documented
Ubuntu (installed)  /  build, install and test
6m 14s
Ubuntu (installed) / build, install and test
iOS
23m 21s
iOS
Emscripten  /  build and test
12m 25s
Emscripten / build and test
WASI  /  build and test
5m 11s
WASI / build and test
Hypothesis tests on Ubuntu
2m 35s
Hypothesis tests on Ubuntu
Cross build Linux
4m 52s
Cross build Linux
Matrix: build-android
Docs  /  ...  /  Check for removed HTML IDs
2m 6s
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

44 errors, 5 warnings, and 2 notices
Docs / Doctest
Process completed with exit code 2.
Docs / Docs
Process completed with exit code 2.
Docs / Check EPUB
Process completed with exit code 1.
Hypothesis tests on Ubuntu
Process completed with exit code 1.
Ubuntu SSL tests (ubuntu-26.04, openssl, 3.5.8)
Process completed with exit code 2.
Ubuntu SSL tests (ubuntu-26.04, aws-lc, 5.5.0)
Process completed with exit code 2.
Ubuntu SSL tests (ubuntu-26.04, openssl, 1.1.1w)
Process completed with exit code 2.
Ubuntu (bolt) / build and test (ubuntu-26.04)
Process completed with exit code 2.
Ubuntu SSL tests (ubuntu-26.04, openssl, 3.4.7)
Process completed with exit code 2.
Ubuntu SSL tests (ubuntu-26.04, openssl, 3.6.4)
Process completed with exit code 2.
Ubuntu SSL tests (ubuntu-26.04, openssl, 3.0.22)
Process completed with exit code 2.
Ubuntu SSL tests (ubuntu-26.04, openssl, 4.0.2)
Process completed with exit code 2.
WASI / build and test
Process completed with exit code 2.
Ubuntu (installed) / build, install and test
Process completed with exit code 2.
Ubuntu (free-threading) / build and test (ubuntu-26.04-arm)
Process completed with exit code 2.
Windows (free-threading) / Build and test (x64, tail-call)
Process completed with exit code 2.
Sanitizers / TSan
Process completed with exit code 2.
Ubuntu / build and test (ubuntu-26.04)
Process completed with exit code 2.
Windows / Build and test (x64, tail-call)
Process completed with exit code 2.
macOS / build and test (macos-26)
Process completed with exit code 2.
Ubuntu / build and test (ubuntu-26.04-arm)
Process completed with exit code 2.
macOS (free-threading) / build and test (macos-26)
Process completed with exit code 2.
Ubuntu (free-threading) / build and test (ubuntu-26.04)
Process completed with exit code 2.
Windows / Build and test (x64, switch-case)
Process completed with exit code 2.
Windows / Build and test (arm64, switch-case)
Process completed with exit code 2.
Sanitizers / TSan (free-threading)
Process completed with exit code 2.
Address sanitizer (ubuntu-26.04)
Process completed with exit code 2.
Windows / Build and test (Win32, switch-case)
Process completed with exit code 2.
Sanitizers / UBSan
Process completed with exit code 2.
Windows (free-threading) / Build and test (x64, switch-case)
Canceling since a higher priority waiting request for Tests-vstinner-writer_canary exists
Windows (free-threading) / Build and test (x64, switch-case)
The operation was canceled.
Android (x86_64)
Canceling since a higher priority waiting request for Tests-vstinner-writer_canary exists
Android (x86_64)
The operation was canceled.
iOS
Canceling since a higher priority waiting request for Tests-vstinner-writer_canary exists
iOS
The operation was canceled.
Windows (free-threading) / Build and test (arm64, switch-case)
Canceling since a higher priority waiting request for Tests-vstinner-writer_canary exists
Windows (free-threading) / Build and test (arm64, switch-case)
The operation was canceled.
macOS / build and test (macos-26-intel)
Canceling since a higher priority waiting request for Tests-vstinner-writer_canary exists
macOS / build and test (macos-26-intel)
The operation was canceled.
All required checks pass
Process completed with exit code 1.
Tests
Canceling since a higher priority waiting request for Tests-vstinner-writer_canary exists
Tests
Canceling since a higher priority waiting request for Tests-vstinner-writer_canary exists
Tests
Canceling since a higher priority waiting request for Tests-vstinner-writer_canary exists
Tests
Canceling since a higher priority waiting request for Tests-vstinner-writer_canary exists
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 / build and test (macos-26)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
macOS / build and test (macos-26)
The following taps are not trusted: aws/tap Homebrew is currently ignoring formulae, casks and commands from these taps because tap trust is required. Untap them with: brew untap aws/tap Trust specific formulae, casks and commands with: brew trust --formula <user>/<tap>/<formula> brew trust --cask <user>/<tap>/<cask> brew trust --command <user>/<tap>/<command> Whole-tap trust is broader and includes all current and future formulae, casks and commands from the listed taps. Trust whole taps with: brew trust aws/tap To disable trust checks: export HOMEBREW_NO_REQUIRE_TAP_TRUST=1 This is not recommended and will be removed in a later release. For more information, see: https://docs.brew.sh/Tap-Trust
macOS (free-threading) / build and test (macos-26)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
macOS / build and test (macos-26-intel)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
Windows / Build and test (arm64, switch-case)
"The windows-11-arm label will migrate to use Visual Studio 2026 by default beginning September 21, 2026. For more information see https://github.com/actions/runner-images/issues/14602"
Windows (free-threading) / Build and test (arm64, switch-case)
"The windows-11-arm label will migrate to use Visual Studio 2026 by default beginning September 21, 2026. For more information see https://github.com/actions/runner-images/issues/14602"

Artifacts

Produced during runtime
Name Size Digest
UBSan-logs-default
1.59 KB
sha256:49ef8725acc1299ddef59be779b856d1fd3476ad467376dfe223da74c7f88ac8
html-ids-head.json.gz
126 KB
sha256:2146b1612edefa36f5cd24f70a7d66e95311d53ddb0ca363a0b58bd8d97f3908