require 'tempfile'
class FileWrapper
  def create_tempfile_with_a_block
    @file = Tempfile.new('foo')
    @file.close
  end
  def create_tempfile
    create_tempfile_with_a_block {}
  end
end

FileWrapper.new.create_tempfile
GC.start
file_count = ObjectSpace.each_object(FileWrapper){|o| puts o.inspect}
puts "Expected 0 files, found #{file_count}"