{"ast_node_type":"variable","tokens":[{"end":77,"kind":"keyword","start":0,"text":"let"}]}
        let overflow = self.overflow_call(intrinsic, &[lhs, rhs, res], None);
        let res = self.context.new_cast(self.location, res, new_type.make_pointer());
        (res.dereference(self.location).to_rvalue(), overflow)