    # File lib/rubygems/specification.rb, line 280
        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 :@loaded,                    false

          spec
        end