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Re: strtonum(3) from OpenBSD?
On Sat, 27 Jun 2009, David Holland wrote:
> On Fri, Jun 26, 2009 at 10:13:55PM +0100, Iain Hibbert wrote:
> >>>> If it *can* set errno on success, which is the usual convention for
> >>>> library functions,
> >>> Nonsense, that is no usual convention. Please read errno(2) and see what
> >>> it says (try the second paragraph in the DIAGNOSTICS section)
> >> Yes, precisely. Did you read your citation before posting it? (Or did
> >> you misunderstand what I wrote because you assumed I didn't know what
> >> I was talking about? :-p )
> > Yes I read it, can you explain how you translate "Successful calls never
> > set errno" into setting errno on success being the "usual convention"?
> Because "successful calls never set errno" is flatly wrong?
an exception does not make a convention.
also since you appear to be pedantic, errno(2) does mention that it
relates to "system calls" and puts(3) is not actually a system call.
Neither did it return an error indication, so the value of errno is moot.
> and that's certainly a reasonable interpretation, but I'm not yet
> convinced it's the only possible interpretation.
perhaps its best to follow the reasonable interpretation rather than
striving to find another.
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