Umm, doesn't happen for me.
> # gcc fifo.c
> # a.out 1
> # a.out
> parent: open: Device not configured
[torvalds@penguin torvalds]$ gcc fifo.c
[torvalds@penguin torvalds]$ ./a.out 1
[torvalds@penguin torvalds]$ ./a.out
[torvalds@penguin torvalds]$
which is apparently the right result.
Maybe it's a glibc bug.
Linus
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