CHECK_ARRAY      6739 compile.c      	CHECK_ARRAY(key);
CHECK_ARRAY       552 iseq.c             data        = CHECK_ARRAY(data);
CHECK_ARRAY       568 iseq.c             locals      = CHECK_ARRAY(rb_ary_entry(data, i++));
CHECK_ARRAY       570 iseq.c             exception   = CHECK_ARRAY(rb_ary_entry(data, i++));
CHECK_ARRAY       571 iseq.c             body        = CHECK_ARRAY(rb_ary_entry(data, i++));