_load (Gem::Specification)

    # File lib/rubygems/specification.rb, line 288
      def self._load(str)
        array = Marshal.load str

        spec = Gem::Specification.new
        spec.instance_variable_set :@specification_version, array[1]

        current_version = CURRENT_SPECIFICATION_VERSION

        field_count = if spec.specification_version > current_version then
                        spec.instance_variable_set :@specification_version,
                                                   current_version
                        MARSHAL_FIELDS[current_version]
                      else
                        MARSHAL_FIELDS[spec.specification_version]
                      end

        if array.size < field_count then
          raise TypeError, "invalid Gem::Specification format #{array.inspect}"
        end

        spec.instance_variable_set :@rubygems_version,          array[0]
        # spec version
        spec.instance_variable_set :@name,                      array[2]
        spec.instance_variable_set :@version,                   array[3]
        spec.instance_variable_set :@date,                      array[4]
        spec.instance_variable_set :@summary,                   array[5]
        spec.instance_variable_set :@required_ruby_version,     array[6]
        spec.instance_variable_set :@required_rubygems_version, array[7]
        spec.instance_variable_set :@original_platform,         array[8]
        spec.instance_variable_set :@dependencies,              array[9]
        spec.instance_variable_set :@rubyforge_project,         array[10]
        spec.instance_variable_set :@email,                     array[11]
        spec.instance_variable_set :@authors,                   array[12]
        spec.instance_variable_set :@description,               array[13]
        spec.instance_variable_set :@homepage,                  array[14]
        spec.instance_variable_set :@has_rdoc,                  array[15]
        spec.instance_variable_set :@new_platform,              array[16]
        spec.instance_variable_set :@platform,                  array[16].to_s
        spec.instance_variable_set :@license,                   array[17]
        spec.instance_variable_set :@loaded,                    false

        spec
      end