class RSpec::Core::Backports::Random::MT19937

def marshal_load(ary)
  b, left = ary
  @last_read = MT19937::STATE_SIZE - left
  @state = Array.new(STATE_SIZE)
  STATE_SIZE.times do |i|
    @state[i] = b & PAD_32_BITS
    b >>= 32
  end
end