--- ../flex-2.5.35/filter.c 2007-03-07 13:50:24.000000000 -0800 +++ ./filter.c 2008-02-26 16:13:21.000000000 -0800 @@ -161,6 +161,7 @@ bool filter_apply_chain (struct filter * * to sync the stream. This is a Hail Mary situation. It seems to work. */ close (pipes[1]); + clearerr(stdin); if (dup2 (pipes[0], fileno (stdin)) == -1) flexfatal (_("dup2(pipes[0],0)")); close (pipes[0]);