patch 8.1.2197: ExitPre autocommand may cause accessing freed memory Commit: https://github.com/vim/vim/commit/34ba06b6e6f94bb46062e6c85dbfdcbb0d255ada Author: Bram Moolenaar <Bram@vim.org> Date: Sun Oct 20 22:27:10 2019 +0200 patch 8.1.2197: ExitPre autocommand may cause accessing freed memory Problem: ExitPre autocommand may cause accessing freed memory. Solution: Check the window pointer is still valid. (closes https://github.com/vim/vim/issues/5093)

/* bufwrite.c */
int buf_write(buf_T *buf, char_u *fname, char_u *sfname, linenr_T start, linenr_T end, exarg_T *eap, int append, int forceit, int reset_changed, int filtering);
/* vim: set ft=c : */