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[3.13] Avoid Clang bug in UBSan CI (GH-157958) #211707

[3.13] Avoid Clang bug in UBSan CI (GH-157958)

[3.13] Avoid Clang bug in UBSan CI (GH-157958) #211707

Triggered via pull request September 30, 2026 14:53
Status Success
Total duration 24m 27s
Artifacts 1

build.yml

on: pull_request
Change detection  /  Create context from changed files
14s
Change detection / Create context from changed files
Matrix: Address sanitizer
Matrix: build-macos
Matrix: build-san
Matrix: Ubuntu SSL tests with OpenSSL
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
34s
Check if Autoconf files are up to date
Check if generated files are up to date
4m 19s
Check if generated files are up to date
C API Docs  /  Check if all C APIs are documented
13s
C API Docs / Check if all C APIs are documented
Ubuntu (installed)  /  build, install and test
5m 12s
Ubuntu (installed) / build, install and test
WASI  /  build and test
7m 24s
WASI / build and test
Hypothesis tests on Ubuntu
6m 59s
Hypothesis tests on Ubuntu
Docs  /  Check EPUB
Docs / Check EPUB
Docs  /  Docs
Docs / Docs
Docs  /  Doctest
Docs / Doctest
Check if the ABI has changed
5m 25s
Check if the ABI has changed
Matrix: build-android
All required checks pass
4s
All required checks pass
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Annotations

26 warnings and 7 notices
Windows (free-threading) / build (arm64): Modules/unicodedata.c#L1568
'function': conversion from 'size_t' to 'int', possible loss of data [D:\a\cpython\cpython\PCbuild\unicodedata.vcxproj]
Windows / build (arm64): Modules/unicodedata.c#L1568
'function': conversion from 'size_t' to 'int', possible loss of data [D:\a\cpython\cpython\PCbuild\unicodedata.vcxproj]
Ubuntu (installed) / build, install and test: Modules/_decimal/libmpdec/io.c#L349
writing 1 byte into a region of size 0 [-Wstringop-overflow=]
Ubuntu (installed) / build, install and test: Modules/_decimal/libmpdec/io.c#L349
writing 1 byte into a region of size 0 [-Wstringop-overflow=]
Ubuntu (installed) / build, install and test: Modules/_decimal/libmpdec/io.c#L349
writing 1 byte into a region of size 0 [-Wstringop-overflow=]
Ubuntu (installed) / build, install and test: Modules/_decimal/libmpdec/io.c#L349
writing 1 byte into a region of size 0 [-Wstringop-overflow=]
Ubuntu (installed) / build, install and test: Modules/_decimal/libmpdec/io.c#L349
writing 1 byte into a region of size 0 [-Wstringop-overflow=]
Ubuntu (installed) / build, install and test: Modules/_decimal/libmpdec/io.c#L349
writing 1 byte into a region of size 0 [-Wstringop-overflow=]
Ubuntu (installed) / build, install and test: Modules/_decimal/libmpdec/io.c#L349
writing 1 byte into a region of size 0 [-Wstringop-overflow=]
Ubuntu (installed) / build, install and test: Modules/_decimal/libmpdec/io.c#L349
writing 1 byte into a region of size 0 [-Wstringop-overflow=]
Ubuntu (installed) / build, install and test: Modules/_decimal/libmpdec/io.c#L349
writing 1 byte into a region of size 0 [-Wstringop-overflow=]
Ubuntu (installed) / build, install and test: Modules/_decimal/libmpdec/io.c#L349
writing 1 byte into a region of size 0 [-Wstringop-overflow=]
Check if the ABI has changed
The `python-version` input is not set. The version of Python currently in `PATH` will be used.
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.
Windows / build and test (x64): Modules/unicodedata.c#L1568
'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): Modules/unicodedata.c#L1568
'function': conversion from 'size_t' to 'int', possible loss of data [D:\a\cpython\cpython\PCbuild\unicodedata.vcxproj]
Address sanitizer (ubuntu-24.04): Modules/_decimal/libmpdec/io.c#L349
writing 1 byte into a region of size 0 [-Wstringop-overflow=]
Address sanitizer (ubuntu-24.04): Modules/_decimal/libmpdec/io.c#L349
writing 1 byte into a region of size 0 [-Wstringop-overflow=]
Address sanitizer (ubuntu-24.04): Modules/_decimal/libmpdec/io.c#L349
writing 1 byte into a region of size 0 [-Wstringop-overflow=]
Address sanitizer (ubuntu-24.04): Modules/_decimal/libmpdec/io.c#L349
writing 1 byte into a region of size 0 [-Wstringop-overflow=]
Address sanitizer (ubuntu-24.04): Modules/_decimal/libmpdec/io.c#L349
writing 1 byte into a region of size 0 [-Wstringop-overflow=]
Address sanitizer (ubuntu-24.04): Modules/_decimal/libmpdec/io.c#L349
writing 1 byte into a region of size 0 [-Wstringop-overflow=]
Address sanitizer (ubuntu-24.04): Modules/_decimal/libmpdec/io.c#L349
writing 1 byte into a region of size 0 [-Wstringop-overflow=]
Address sanitizer (ubuntu-24.04): Modules/_decimal/libmpdec/io.c#L349
writing 1 byte into a region of size 0 [-Wstringop-overflow=]
Address sanitizer (ubuntu-24.04): Python/import.c#L1197
‘__builtin_strncpy’ output truncated before terminating nul copying as many bytes from a string as its length [-Wstringop-truncation]
Address sanitizer (ubuntu-24.04): Include/internal/pycore_dict.h#L302
writing 1 byte into a region of size 0 [-Wstringop-overflow=]
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"
Android (aarch64)
Due to capacity constraints, jobs targeting macOS arm64 runners may experience longer queue times.
macOS / build and test (macos-26)
Due to capacity constraints, jobs targeting macOS arm64 runners may experience longer queue times.
macOS (free-threading) / build and test (macos-26)
Due to capacity constraints, jobs targeting macOS arm64 runners may experience longer queue times.
macOS (free-threading) / build and test (macos-26)
Due to capacity constraints, jobs targeting macOS arm64 runners may experience longer queue times.
All required checks pass
"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"

Artifacts

Produced during runtime
Name Size Digest
TSan-logs-free-threading
1.77 KB
sha256:cb212e983dca69eae7973354e149b1da342e064734102a41e1c1081736f91df4