> James Giles writes:
> > Well, actually -1 might very well be a valid unit number. Nothing in
> > the standard requires unit numbers to be positive.
>
> 3rd para (not counting the constraint as a para) after R903 in section
> 9.3 of f95.
>
> Actually, it says zero or positive.
Must have been written by a C programmer. :-)
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