class MyObject
 def test
  $SAFE
 end
end
puts "Before marshal is tainted?: #{MyObject.new.method(:test).tainted?}"
File.write("/tmp/marshal_bug",Marshal.dump(MyObject))
Marshal.load(File.open("/tmp/marshal_bug"))
puts "After marshal is tainted?: #{MyObject.new.method(:test).tainted?}"

puts "Safe level when calling tainted method using call: #{MyObject.new.method(:test).call}"
puts "Safe level when calling tainted method directly: #{MyObject.new.test}"