fails:Marshal.dump with a Float dumps a Float
fails(gh-631):Marshal.dump with an object responding to #_dump dumps the object returned by #marshal_dump
fails(gh-631):Marshal.dump with a String dumps a blank String
fails(gh-631):Marshal.dump with a String dumps a short String
fails(gh-631):Marshal.dump with a String dumps a long String
fails(gh-631):Marshal.dump with a String dumps a String extended with a Module
fails(gh-631):Marshal.dump with a Regexp dumps an extended Regexp
fails(gh-631):Marshal.dump with an Array dumps an extended Array
fails(gh-631):Marshal.dump with a Hash dumps an extended Hash
