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[3.14] gh-158803: Fix crash in bytes.join() on a concurrently mutated list #212666

Triggered via pull request October 8, 2026 15:39

christianaurichzm

opened #159031

christianaurichzm:backport-05d80cc-3.14

Status Success

Total duration 28m 3s

Artifacts 1

build.yml

on: pull_request

Change detection / Create context from changed files

19s

Matrix: Address sanitizer

Matrix: build-macos

Matrix: build-san

Matrix: Ubuntu SSL tests

Matrix: build-ubuntu

Matrix: build-windows-msi

Waiting for pending jobs

Matrix: build-windows

Matrix: cifuzz

Waiting for pending jobs

Check if Autoconf files are up to date

30s

Check if generated files are up to date

4m 8s

C API Docs / Check if all C APIs are documented

14s

Ubuntu (installed) / build, install and test

5m 54s

iOS

22m 21s

Emscripten / build and test

11m 57s

WASI / build and test

4m 24s

Hypothesis tests on Ubuntu

9m 5s

Cross build Linux

4m 25s

Check if the ABI has changed

1m 45s

Matrix: build-android

All required checks pass

Annotations

2 errors, 16 warnings, and 10 notices

Docs / Docs

Process completed with exit code 2.

Docs / Check EPUB

Process completed with exit code 1.

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`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!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 / 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`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!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`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!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): Modules/unicodedata.c#L1569

'function': conversion from 'size_t' to 'int', possible loss of data [C:\a\cpython\cpython\PCbuild\unicodedata.vcxproj]

Windows / Build and test (arm64): Python/generated_cases.c.h#L12359

'initializing': conversion from '__int64' to 'int', possible loss of data [C:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]

Windows / Build and test (arm64): Python/generated_cases.c.h#L7662

'initializing': conversion from '__int64' to 'int', possible loss of data [C:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]

Windows / Build and test (x64): Modules/unicodedata.c#L1569

'function': conversion from 'size_t' to 'int', possible loss of data [D:\a\cpython\cpython\PCbuild\unicodedata.vcxproj]

Windows / Build and test (x64): Python/generated_cases.c.h#L12359

'initializing': conversion from '__int64' to 'int', possible loss of data [D:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]

Windows / Build and test (x64): Python/generated_cases.c.h#L7662

'initializing': conversion from '__int64' to 'int', possible loss of data [D:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]

Windows (free-threading) / Build and test (x64): Modules/unicodedata.c#L1569

'function': conversion from 'size_t' to 'int', possible loss of data [D:\a\cpython\cpython\PCbuild\unicodedata.vcxproj]

Windows (free-threading) / Build and test (x64): Python/generated_cases.c.h#L12359

'initializing': conversion from '__int64' to 'int', possible loss of data [D:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]

Windows (free-threading) / Build and test (x64): Python/generated_cases.c.h#L7662

'initializing': conversion from '__int64' to 'int', possible loss of data [D:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]

Windows (free-threading) / Build and test (arm64): Modules/unicodedata.c#L1569

'function': conversion from 'size_t' to 'int', possible loss of data [C:\a\cpython\cpython\PCbuild\unicodedata.vcxproj]

Windows (free-threading) / Build and test (arm64): Python/generated_cases.c.h#L12359

'initializing': conversion from '__int64' to 'int', possible loss of data [C:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]

Windows (free-threading) / Build and test (arm64): Python/generated_cases.c.h#L7662

'initializing': conversion from '__int64' to 'int', possible loss of data [C:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]

Change detection / Create context from changed files

"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"

C API Docs / Check if all C APIs are documented

"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"

Docs / Docs

"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"

Docs / Check EPUB

"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"

Android (aarch64)