closure memory leak in ruby

holy_rusted_metal_batman.rb

N = 10_000_000

class Foo
  def initialize
    @ary = (0..N).map { Object.new }
  end

  def a
    return proc do
      "hello"
    end
  end
end

def wat
  Foo.new.a
end

cl = wat
GC.start

puts "sleeping"

sleep 10