patch 8.2.1945: crash when passing NULL function to reduce() Commit: https://github.com/vim/vim/commit/0d90e728fe089ff1bb34d6a17f5591a96b57f734 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Nov 3 18:20:19 2020 +0100 patch 8.2.1945: crash when passing NULL function to reduce() Problem: Crash when passing NULL function to reduce(). Solution: Check for NULL pointer and give an error. (Dominique Pell?, closes #7243)

/* vi:set ts=8 sts=4 sw=4 noet:
 *
 * VIM - Vi IMproved	by Bram Moolenaar
 *
 * Do ":help uganda"  in Vim to read copying and usage conditions.
 * Do ":help credits" in Vim to see a list of people who contributed.
 */

#ifdef __QNXNTO__
# include <sys/procmgr.h>
#endif

#define	USE_TMPNAM

#define POSIX	    // Used by pty.c

#if defined(FEAT_GUI_PHOTON)
extern int is_photon_available;
#endif