patch 8.2.3998: asan error for adding zero to NULL Commit: https://github.com/vim/vim/commit/48824e952f7db8ca657fe20e66456fc19fca6815 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Jan 4 16:05:48 2022 +0000 patch 8.2.3998: asan error for adding zero to NULL Problem: Asan error for adding zero to NULL. Solution: Do not compute pointer if there are no entries.

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}\")