nd_ensr          4511 compile.c      	const rb_iseq_t *ensure = NEW_CHILD_ISEQ(node->nd_ensr,
nd_ensr          4522 compile.c      	COMPILE_POPED(ensr, "ensure ensr", node->nd_ensr);
nd_ensr          4527 compile.c      	push_ensure_entry(iseq, &enl, &er, node->nd_ensr);
nd_ensr           291 node.c         	F_NODE(nd_ensr, "ensure clause");