commit https://github.com/vim/vim/commit/821179809d9b0f65177360b53584be2b4039dd46 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Aug 27 19:21:48 2016 +0200 patch 7.4.2270 Problem: Insufficient testing for NUL bytes on a raw channel. Solution: Add a test for writing and reading.

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}\")