Possible memory leak in therubyracer

gistfile1.rb

require "rubygems"
require "v8"
require "ostruct"
require "memprof"

funcs = []

3.times do
  cxt = V8::Context.new
  funcs << cxt.eval("f = function(arg) { return arg.a + arg.b }")
end

blank = Object.new

Memprof.track do
  1000.times do
    funcs.each do |func|
      func.methodcall(blank,OpenStruct.new(:a => 1, :b => 2))
    end
  end
  while !V8::C::V8::IdleNotification(); end
  GC.start
end

#12000 /Users/subelsky/.rvm/rubies/ruby-1.8.7-p330/lib/ruby/1.8/ostruct.rb:83:__node__
  #12000 /Users/subelsky/.rvm/rubies/ruby-1.8.7-p330/lib/ruby/1.8/ostruct.rb:83:Proc
  #12000 /Users/subelsky/.rvm/rubies/ruby-1.8.7-p330/lib/ruby/1.8/ostruct.rb:82:__node__
  #12000 /Users/subelsky/.rvm/rubies/ruby-1.8.7-p330/lib/ruby/1.8/ostruct.rb:82:Proc
   #6000 /Users/subelsky/.rvm/rubies/ruby-1.8.7-p330/lib/ruby/1.8/ostruct.rb:81:__varmap__
   #6000 /Users/subelsky/.rvm/rubies/ruby-1.8.7-p330/lib/ruby/1.8/ostruct.rb:51:__scope__
   #6000 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal/functions.rb:38:V8::C::Function
   #6000 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal/functions.rb:38:String
   #6000 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal/functions.rb:38:Hash
   #6000 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal/functions.rb:28:V8::C::FunctionTemplate
   #6000 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal/functions.rb:28:String
   #6000 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal/functions.rb:28:Proc
   #6000 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal/functions.rb:28:Hash
   #6000 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal/functions.rb:10:__scope__
   #6000 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal.rb:246:__scope__
   #6000 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal.rb:201:Proc
   #6000 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/function.rb:10:__scope__
   #6000 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/function.rb:10:V8::C::String
   #6000 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/function.rb:10:V8::C::AccessorInfo
   #6000 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/function.rb:10:Hash
   #6000 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/access.rb:8:UnboundMethod
   #3003 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal.rb:46:V8::C::Object
   #3003 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal.rb:46:Hash
   #3000 bin/memcheck.rb:18:OpenStruct
   #3000 /Users/subelsky/.rvm/rubies/ruby-1.8.7-p330/lib/ruby/1.8/ostruct.rb:81:Class
   #3000 /Users/subelsky/.rvm/rubies/ruby-1.8.7-p330/lib/ruby/1.8/ostruct.rb:47:Hash
     #30 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal.rb:174:String
     #30 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal.rb:167:String
     #12 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal.rb:20:__varmap__
      #6 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal.rb:46:__varmap__
      #6 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal.rb:21:__varmap__
      #6 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal.rb:21:V8::C::FunctionTemplate
      #6 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal.rb:21:String
      #6 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal.rb:21:Proc
      #6 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal.rb:21:Hash
      #6 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal.rb:174:Hash
      #6 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal.rb:167:Hash
      #4 bin/memcheck.rb:17:__varmap__
      #4 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal.rb:35:String
      #3 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal.rb:35:MatchData
      #2 bin/memcheck.rb:18:__scope__
      #2 bin/memcheck.rb:16:__varmap__
      #1 bin/memcheck.rb:18:Hash
      #1 bin/memcheck.rb:18:Array
      #1 bin/memcheck.rb:15:__varmap__
      #1 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal/functions.rb:10:String
      #1 /Users/subelsky/.rvm/gems/ruby-1.8.7-p330@exp-world/bundler/gems/therubyracer-67a1cc5c9ef6/lib/v8/portal.rb:84:String