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[3.15] gh-151695: Fix use-after-free of the curses screen encoding (GH-151696) - #151703
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…thonGH-151696) The module-global curses_screen_encoding stored a borrowed pointer to the encoding owned by the window returned by the first initscr() call. That window can be deallocated while unctrl() and ungetch(), which have no window of their own, still use the pointer to encode non-ASCII characters. Keep a private copy of the encoding instead. (cherry picked from commit 551f8e1) Co-authored-by: Serhiy Storchaka <storchaka@gmail.com> Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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The module-global curses_screen_encoding stored a borrowed pointer to the
encoding owned by the window returned by the first initscr() call. That
window can be deallocated while unctrl() and ungetch(), which have no window
of their own, still use the pointer to encode non-ASCII characters.
Keep a private copy of the encoding instead.
(cherry picked from commit 551f8e1)
Co-authored-by: Serhiy Storchaka storchaka@gmail.com
Co-authored-by: Claude Opus 4.8 (1M context) noreply@anthropic.com