| Issue |
178262
|
| Summary |
shtest-encoding.py breaks with python 3.14
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
igorluppi
|
The llvm-21-tools package ships a test file that contains non-UTF-8 characters without an encoding declaration, causing package installation to fail with Python 3.14.
**Affected Package**
llvm-21-tools 1:21.1.8-1ubuntu1
**Problematic File**
/usr/lib/llvm-21/build/utils/lit/tests/shtest-encoding.py
**Error**
When Python 3.14 is the default interpreter, installing llvm-21-tools triggers:
SyntaxError: Non-UTF-8 code starting with '\xc2' on line 3, but no encoding declared
This occurs during package post-installation when Python attempts to byte-compile the file. The error causes llvm-21-tools configuration to fail, which blocks installation of:
- clang-tidy-21
- python3-pygments (via rtupdate hooks)
- Any package build-depending on LLVM 21 toolchain
**Impact**
This is a Python 3.14 transition blocker affecting the entire Ubuntu archive. Any package that build-depends on clang-21, clang-tidy-21, clang-tools-21, llvm-21-dev, or llvm-21-tools will fail to build when Python 3.14 is default.
**Technical Details**
Line 3 of shtest-encoding.py contains byte 0xc2 (non-UTF-8 character) but lacks a PEP 263 encoding declaration (e.g., # -*- coding: utf-8 -*-). Python 3.14 enforces PEP 263 strictly and fails to compile such files, while Python 3.13 is more lenient.
Verification:
$ python3.14 -m py_compile /usr/lib/llvm-21/build/utils/lit/tests/shtest-encoding.py
File "/usr/lib/llvm-21/build/utils/lit/tests/shtest-encoding.py", line 3
SyntaxError: Non-UTF-8 code starting with '\xc2'
$ sed -n '3p' /usr/lib/llvm-21/build/utils/lit/tests/shtest-encoding.py | xxd
(shows 0xc2 byte)
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