UNOP (0x982ca28)
        op_next         0x981f960
        op_sibling      0x0
        op_ppaddr       PL_ppaddr[OP_RV2SV]
        op_targ         0
        op_type         15
        op_seq          7128
        op_flags        6
        op_private      3
        op_first        0x9835dd8