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gh-143543: Fix re-entrant use-after-free in itertools.groupby #179844

gh-143543: Fix re-entrant use-after-free in itertools.groupby

gh-143543: Fix re-entrant use-after-free in itertools.groupby #179844

Triggered via pull request January 13, 2026 05:12
Status Failure
Total duration 4m 11s
Artifacts 1

build.yml

on: pull_request
Change detection  /  Create context from changed files
13s
Change detection / Create context from changed files
Matrix: Address sanitizer
Matrix: build-macos
Matrix: build-san
Matrix: Ubuntu SSL tests with AWS-LC
Matrix: Ubuntu SSL tests with OpenSSL
Matrix: build-ubuntu
Matrix: build-windows-msi
Waiting for pending jobs
Matrix: build-windows
Matrix: CIFuzz
Docs  /  Docs
1m 43s
Docs / Docs
Docs  /  Doctest
1m 41s
Docs / Doctest
Docs  /  Check EPUB
1m 56s
Docs / Check EPUB
Check if Autoconf files are up to date
29s
Check if Autoconf files are up to date
Check if generated files are up to date
1m 55s
Check if generated files are up to date
iOS
1m 21s
iOS
WASI  /  build and test
1m 6s
WASI / build and test
Hypothesis tests on Ubuntu
1m 47s
Hypothesis tests on Ubuntu
Cross build Linux
2m 5s
Cross build Linux
Matrix: build-android
All required checks pass
3s
All required checks pass
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59 errors and 16 warnings
WASI / build and test
Process completed with exit code 1.
Android (x86_64)
Process completed with exit code 1.
iOS
Process completed with exit code 1.
macOS / build and test (macos-14)
Process completed with exit code 2.
Android (aarch64)
Process completed with exit code 1.
Windows / Build and test (x64)
Process completed with exit code 1.
Windows / Build and test (x64): Modules/itertoolsmodule.c#L554
'currkey': redefinition; multiple initialization [D:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]
Windows / Build and test (x64): Modules/itertoolsmodule.c#L553
'tgtkey': redefinition; multiple initialization [D:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]
Docs / Doctest
Process completed with exit code 2.
Windows (free-threading) / Build and test (x64)
Process completed with exit code 1.
Windows (free-threading) / Build and test (x64): Modules/itertoolsmodule.c#L554
'currkey': redefinition; multiple initialization [D:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]
Windows (free-threading) / Build and test (x64): Modules/itertoolsmodule.c#L553
'tgtkey': redefinition; multiple initialization [D:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]
Docs / Docs
Process completed with exit code 2.
Windows / Build and test (Win32)
Process completed with exit code 1.
Hypothesis tests on Ubuntu
Process completed with exit code 2.
Hypothesis tests on Ubuntu: Modules/itertoolsmodule.c#L554
redefinition of ‘currkey’
Hypothesis tests on Ubuntu: Modules/itertoolsmodule.c#L553
redefinition of ‘tgtkey’
Ubuntu SSL tests with OpenSSL (ubuntu-24.04, 3.2.6)
Process completed with exit code 2.
Ubuntu SSL tests with OpenSSL (ubuntu-24.04, 3.3.5)
Process completed with exit code 2.
Ubuntu SSL tests with OpenSSL (ubuntu-24.04, 3.5.4)
Process completed with exit code 2.
Ubuntu SSL tests with OpenSSL (ubuntu-24.04, 3.4.3)
Process completed with exit code 2.
Ubuntu SSL tests with OpenSSL (ubuntu-24.04, 3.0.18)
Process completed with exit code 2.
Check if generated files are up to date
Process completed with exit code 2.
Docs / Check EPUB
Process completed with exit code 1.
Ubuntu SSL tests with OpenSSL (ubuntu-24.04, 1.1.1w)
Process completed with exit code 2.
Cross build Linux
Process completed with exit code 2.
Cross build Linux: Modules/itertoolsmodule.c#L554
redefinition of ‘currkey’
Cross build Linux: Modules/itertoolsmodule.c#L553
redefinition of ‘tgtkey’
macOS (free-threading) / build and test (macos-14)
Process completed with exit code 2.
Ubuntu SSL tests with AWS-LC (ubuntu-24.04, 1.55.0)
Process completed with exit code 2.
Windows / Build and test (arm64)
Process completed with exit code 1.
Windows / Build and test (arm64): Modules/itertoolsmodule.c#L554
'currkey': redefinition; multiple initialization [C:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]
Windows / Build and test (arm64): Modules/itertoolsmodule.c#L553
'tgtkey': redefinition; multiple initialization [C:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]
Ubuntu / build and test (ubuntu-24.04)
Process completed with exit code 2.
Ubuntu / build and test (ubuntu-24.04): Modules/itertoolsmodule.c#L554
redefinition of ‘currkey’
Ubuntu / build and test (ubuntu-24.04): Modules/itertoolsmodule.c#L553
redefinition of ‘tgtkey’
Windows (free-threading) / Build and test (arm64)
Process completed with exit code 1.
Windows (free-threading) / Build and test (arm64): Modules/itertoolsmodule.c#L554
'currkey': redefinition; multiple initialization [C:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]
Windows (free-threading) / Build and test (arm64): Modules/itertoolsmodule.c#L553
'tgtkey': redefinition; multiple initialization [C:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]
Ubuntu (free-threading) / build and test (ubuntu-24.04)
Process completed with exit code 2.
Ubuntu (free-threading) / build and test (ubuntu-24.04-arm)
Process completed with exit code 2.
Ubuntu (bolt) / build and test (ubuntu-24.04)
Process completed with exit code 2.
Ubuntu / build and test (ubuntu-24.04-arm)
Process completed with exit code 2.
Sanitizers / TSan (free-threading)
Process completed with exit code 2.
Sanitizers / TSan
Process completed with exit code 2.
macOS / build and test (macos-15-intel)
Process completed with exit code 2.
Address sanitizer (ubuntu-24.04)
Process completed with exit code 2.
Address sanitizer (ubuntu-24.04): Modules/itertoolsmodule.c#L554
redefinition of ‘currkey’
Address sanitizer (ubuntu-24.04): Modules/itertoolsmodule.c#L553
redefinition of ‘tgtkey’
Sanitizers / UBSan
Process completed with exit code 2.
All required checks pass
Process completed with exit code 1.
macOS / build and test (macos-14)
Already linked: /opt/homebrew/Cellar/tcl-tk/9.0.3
macOS / build and test (macos-14)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
macOS / build and test (macos-14)
gdbm 1.26 is already installed and up-to-date. To reinstall 1.26, run: brew reinstall gdbm
macOS / build and test (macos-14)
xz 5.8.2 is already installed and up-to-date. To reinstall 5.8.2, run: brew reinstall xz
macOS / build and test (macos-14)
pkgconf 2.5.1 is already installed and up-to-date. To reinstall 2.5.1, run: brew reinstall pkgconf
Hypothesis tests on Ubuntu
No files were found with the provided path: /home/runner/work/cpython/cpython-builddir/.hypothesis/examples/. No artifacts will be uploaded.
macOS (free-threading) / build and test (macos-14)
Already linked: /opt/homebrew/Cellar/tcl-tk/9.0.3
macOS (free-threading) / build and test (macos-14)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
macOS (free-threading) / build and test (macos-14)
gdbm 1.26 is already installed and up-to-date. To reinstall 1.26, run: brew reinstall gdbm
macOS (free-threading) / build and test (macos-14)
xz 5.8.2 is already installed and up-to-date. To reinstall 5.8.2, run: brew reinstall xz
macOS (free-threading) / build and test (macos-14)
pkgconf 2.5.1 is already installed and up-to-date. To reinstall 2.5.1, run: brew reinstall pkgconf
macOS / build and test (macos-15-intel)
Already linked: /usr/local/Cellar/tcl-tk/9.0.3
macOS / build and test (macos-15-intel)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
macOS / build and test (macos-15-intel)
gdbm 1.26 is already installed and up-to-date. To reinstall 1.26, run: brew reinstall gdbm
macOS / build and test (macos-15-intel)
xz 5.8.2 is already installed and up-to-date. To reinstall 5.8.2, run: brew reinstall xz
macOS / build and test (macos-15-intel)
pkgconf 2.5.1 is already installed and up-to-date. To reinstall 2.5.1, run: brew reinstall pkgconf

Artifacts

Produced during runtime
Name Size Digest
UBSan-logs-default
388 Bytes
sha256:2bcaa7e4413b62344296310d9d0ffedc98200d1c123cc889e826c7b91877c23f