parse.y:5089
static void
void_stmts(node)
    NODE *node;
{
    if (!RTEST(ruby_verbose)) return;
    if (!node) return;
    if (nd_type(node) != NODE_BLOCK) return;

    for (;;) {
	if (!node->nd_next) return;
	void_expr(node->nd_head);
	node = node->nd_next;
    }
}
