patch 8.0.0458: potential crash if adding list or dict to dict fails commit https://github.com/vim/vim/commit/42f45b850df93b806ef44f3025aecedfffb9ae01 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Mar 14 22:17:14 2017 +0100 patch 8.0.0458: potential crash if adding list or dict to dict fails Problem: Potential crash if adding list or dict to dict fails. Solution: Make sure the reference count is correct. (Nikolai Pavlov, closes #1555)

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}\")