From: Michael Davis <mdavis@...>
Date: 2003-10-11T05:12:20+09:00
Subject: Ruby 1.8 and marshal_dump issue

Hello all,

I have an issue with marshal_dump in Ruby 1.8 that I can't seem to work around.  I have a Hash the contains a proc object and I need to Marshal.dump the Hash.  I have included a marshal_dump method to eliminate the proc object from the Hash but I still get an error during the Marshal.dump.  The error message is:

   "class Proc needs to have instance method `_dump_data'"

Any suggestions is greatly appreciated.  

Here is a very specific example that reproduces the error:

class MyClass < Hash
   def initialize(attr)
      self.update(attr)
   end
   def marshal_dump()    #:nodoc:
      self.delete(:test)
      puts self.inspect
      super
   end
end

a = MyClass.new(:test=>proc{puts 'test'}, :test2=>2)
puts Marshal.dump(a).inspect
exit

Thanks in advance, Michael Davis