patch 8.0.1335: writefile() using fsync() may give an error. commit https://github.com/vim/vim/commit/291a9d15ed1eb1094edc8ad6dda00a6da3bd7072 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Nov 25 14:37:11 2017 +0100 patch 8.0.1335: writefile() using fsync() may give an error. Problem: Writefile() using fsync() may give an error for a device. (Yasuhiro Matsumoto) Solution: Ignore fsync() failing. (closes #2373)

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}\")