commit https://github.com/vim/vim/commit/da5dcd936656f524dd0ae7cb2685245f07f5720f Author: Bram Moolenaar <Bram@vim.org> Date: Tue Jan 19 14:31:20 2016 +0100 patch 7.4.1136 Problem: Wrong argument to assert_exception() causes a crash. (reported by Coverity) Solution: Check for NULL pointer. Add a test.

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}\")