Closed
Description
Bug summary
I am encountering a bus error in addfont when I am running unit tests for a package that uses matplotlib (healpy) under cibuildwheel on GitHub's new free Apple Silicon runners. I don't have a straightforward way of reproducing this outside of GitHub Actions.
Code for reproduction
Actual outcome
Font loading fails without crashing.
Expected outcome
The most relevant part of the log output (https://github.com/healpy/healpy/actions/runs/7721358991/job/21047787718?pr=896) is:
Fatal Python error: Bus error
Thread 0x000000016ea4f000 (most recent call first):
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/threading.py", line 316 in wait
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/threading.py", line 581 in wait
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/threading.py", line 1304 in run
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/threading.py", line 980 in _bootstrap_inner
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/threading.py", line 937 in _bootstrap
Current thread 0x00000001e4229000 (most recent call first):
File "/private/var/folders/1k/qq3pcbf12vb6vyblh81736p40000gn/T/cibw-run-krc4imxq/cp39-macosx_arm64/venv-test/lib/python3.9/site-packages/matplotlib/font_manager.py", line 1076 in addfont
File "/private/var/folders/1k/qq3pcbf12vb6vyblh81736p40000gn/T/cibw-run-krc4imxq/cp39-macosx_arm64/venv-test/lib/python3.9/site-packages/matplotlib/font_manager.py", line 1043 in __init__
File "/private/var/folders/1k/qq3pcbf12vb6vyblh81736p40000gn/T/cibw-run-krc4imxq/cp39-macosx_arm64/venv-test/lib/python3.9/site-packages/matplotlib/font_manager.py", line 1576 in _load_fontmanager
File "/private/var/folders/1k/qq3pcbf12vb6vyblh81736p40000gn/T/cibw-run-krc4imxq/cp39-macosx_arm64/venv-test/lib/python3.9/site-packages/matplotlib/font_manager.py", line 1582 in <module>
Additional information
No response
Operating system
macOS
Matplotlib Version
3.8.2
Matplotlib Backend
No response
Python version
3.9
Jupyter version
No response
Installation
pip