# File lib/innodb/log_record.rb, line 161
  def read_sys_fields(c)
    {
      :trx_id_pos => c.name("trx_id_pos") { c.get_ic_uint32 },
      :roll_ptr   => c.name("roll_ptr") { c.get_bytes(7) },
      :trx_id     => c.name("trx_id") { c.get_ic_uint64 },
    }
  end