commit https://github.com/vim/vim/commit/4e329fcaf7122370a6d1815a30aaf29476d3f722 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Mar 7 15:24:03 2016 +0100 patch 7.4.1507 Problem: Crash when starting a job fails. Solution: Check for the channel to be NULL. (idea by Yasuhiro Matsumoto)

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}\")