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)

TYPEMAP
VIWIN	T_VIOBJNOMUNGE
VIBUF	T_VIOBJNOMUNGE

INPUT
T_VIOBJNOMUNGE
	if (sv_isa($arg, \"${ntype}\")) {
	    IV tmp = SvIV((SV*)SvRV($arg));
	    $var = INT2PTR($type, tmp);
	    if (!tmp)
		croak(\"$ntype no longer exists\");
	}
	else
	    croak(\"$var is not of type ${ntype}\")