patch 8.2.3756: might crash when callback is not valid Commit: https://github.com/vim/vim/commit/4dc24eb5adbcc76838fae1e900936dd230209d96 Author: Yegappan Lakshmanan <yegappan@yahoo.com> Date: Tue Dec 7 12:23:57 2021 +0000 patch 8.2.3756: might crash when callback is not valid Problem: might crash when callback is not valid. Solution: Check for valid callback. (Yegappan Lakshmanan, closes https://github.com/vim/vim/issues/9293)

/* drawline.c */
int win_line(win_T *wp, linenr_T lnum, int startrow, int endrow, int nochange, int number_only);
/* vim: set ft=c : */