Comment 2 for bug 992271

Thanks for your report, and sorry for my delay!

The distinguishing feature here is that lynx closes the CGI script's standard input. As a result, at some point man does roughly:

  last_input = open (filename, O_RDONLY);
  dup2 (last_input, 0);
  close (last_input);

But the "open" returns 0, since that's the first available file descriptor, so everything is now very confused. libpipeline needs to tolerate this situation.