Skip to content

fix: segfault on Python 3.14 in libei variadic function call #7

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
davidselassie wants to merge 2 commits into
base: main
Choose a base branch
from
Open

fix: segfault on Python 3.14 in libei variadic function call #7

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
32fe777
Fix segfault on Python 3.14 in libei variadic function call
davidselassie Apr 4, 2026
786455e
Add changelog entry for Python 3.14 segfault fix
davidselassie Apr 4, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 4 additions & 0 deletions CHANGELOG.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

## [Unreleased]

### Fixed

- Segfault on Python 3.14 caused by missing `argtypes` on variadic `ei_seat_bind_capabilities` ctypes call

## [0.7.0] - 2026-03-29

### Added
Expand Down
3 changes: 2 additions & 1 deletion src/kwin_mcp/input.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -162,7 +162,8 @@ def _load_libei() -> ctypes.CDLL:
lib.ei_seat_has_capability.argtypes = [ctypes.c_void_p, ctypes.c_uint]
lib.ei_seat_ref.restype = ctypes.c_void_p
lib.ei_seat_ref.argtypes = [ctypes.c_void_p]
# ei_seat_bind_capabilities is variadic, argtypes not set
lib.ei_seat_bind_capabilities.restype = None
lib.ei_seat_bind_capabilities.argtypes = [ctypes.c_void_p] # variadic: fixed param only

# Device functions
lib.ei_event_get_device.restype = ctypes.c_void_p
Expand Down