From: "Berger, Daniel" Date: 2005-10-13T05:09:07+09:00 Subject: Problem subclassing IO and writing on Windows Hi all, Windows XP Pro Ruby 1.8.2 The following snippet dies on Windows with: subtest.rb:8:in `write': not opened for writing (IOError) from subtest.rb:8:in `write_stuff' from subtest.rb:14 Works fine on *nix. Am I doing something wrong? Or is this a bug? # subtest.rb class MyIO < IO def initialize(arg) super(arg) binmode end def write_stuff write("Hello World") end end mio = MyIO.new(File.open("test.txt","wb+").fileno) mio.write_stuff mio.close puts "Done" Regards, Dan