mirror of
https://github.com/python/cpython.git
synced 2026-05-10 06:31:43 -04:00
Serhiy Storchaka
3c9d1778ef
The X/Open curses specification[0] and ncurses documentation[1]
both state that subwindows must be deleted before the main window.
Deleting the windows in the wrong order causes a double-free with
NetBSD's curses implementation.
To fix this, keep track of the original window object in the subwindow
object, and keep a reference to the original for the lifetime of
the subwindow.
[0] https://pubs.opengroup.org/onlinepubs/7908799/xcurses/delwin.html
[1] https://invisible-island.net/ncurses/man/curs_window.3x.html
(cherry picked from commit 0af61fe2f4)
Co-authored-by: Michael Forney <mforney@mforney.org>
The Python C API ================ The C API is divided into these sections: 1. ``Include/``: Limited API 2. ``Include/cpython/``: CPython implementation details 3. ``Include/cpython/``, names with the ``PyUnstable_`` prefix: API that can change between minor releases 4. ``Include/internal/``, and any name with ``_`` prefix: The internal API Information on changing the C API is available `in the developer guide`_ .. _in the developer guide: https://devguide.python.org/c-api/