Re: I/O - exception handling

["Randy Brukardt" <randy@rrsoftware.com>]

Preben Randhol wrote in message ...
>No, so then why would an exception in Is_Open be expected at all? Are
>there some perculiar hardware where you need to poke into the I/O to
see
>if a file was opened?


It wouldn't be *expected*, but the standard *allows* it, so the truly
paranoid programmer would have to take that into account. And even if
you defined it not to raise any IO_Exceptions, it still could raise
Storage_Error or Program_Error, so you can't claim that it never, ever
raised any exceptions anyway.

As I said, its not worth worrying about; in practice, it won't raise an
exception, and there is no need to protect it. But you can't determine
that from the standard (and there is no possible standard language from
which you could).

          Randy.