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[3.14] gh-142831: Fix use-after-free in json encoder during re-entrant mutation (gh-142851) #193111

[3.14] gh-142831: Fix use-after-free in json encoder during re-entrant mutation (gh-142851)

[3.14] gh-142831: Fix use-after-free in json encoder during re-entrant mutation (gh-142851) #193111

Triggered via pull request May 19, 2026 11:41
Status Failure
Total duration 25m 22s
Artifacts 2

build.yml

on: pull_request
Change detection  /  Create context from changed files
10s
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-msi
Waiting for pending jobs
Matrix: build-windows
Matrix: cifuzz
Check if the ABI has changed
1m 37s
Check if the ABI has changed
Matrix: build-android
All required checks pass
4s
All required checks pass
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2 errors and 16 warnings
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`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!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`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
Windows / Build and test (arm64): Modules/unicodedata.c#L1478
'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#L12346
'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#L1478
'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#L12346
'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]
macOS / build and test (macos-15-intel)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
Windows (free-threading) / Build and test (arm64): Modules/unicodedata.c#L1478
'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#L12346
'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]
Windows (free-threading) / Build and test (x64): Modules/unicodedata.c#L1478
'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#L12346
'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]

Artifacts

Produced during runtime
Name Size Digest
UBSan-logs-default
18.5 KB
sha256:544485fcecc48d84646fda460283e750bfa07bf5ad0a758a5a0ee6fe2b23fa69
address-artifacts
2.84 KB
sha256:ac11c88e72771379206f3e781f56620806693643304417621064ddc0464087eb