patch 9.0.1317: crash when using an unset object variable Commit: https://github.com/vim/vim/commit/552bdca781bd202012224316ffae3439aac83b7b Author: Bram Moolenaar <Bram@vim.org> Date: Fri Feb 17 21:08:50 2023 +0000 patch 9.0.1317: crash when using an unset object variable Problem: Crash when using an unset object variable. Solution: Give an error instead. (closes https://github.com/vim/vim/issues/12005)

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}\")