Re: __attribute__((warn_unused_result)) for NetBSD?

[christos%astron.com@localhost (Christos Zoulas)]

In article <20080915000724.GA17012%panix.com@localhost>,
Thor Lancelot Simon  <tls%rek.tjls.com@localhost> wrote:
>On Sun, Sep 14, 2008 at 07:53:55PM -0400, der Mouse wrote:
>> >> Why?  IMO Not checking for return value of all these functions as
>> >> well as close fclose etc. is VERY dangerous.
>> > Please, explain to me what exactly you intend to do to handle an
>> > error return from close().
>> 
>> I didn't write that.  But the answer seems pretty obvious: report it to
>> wherever is appropriate for errors on the file in question.
>> 
>> Typically an error from close() will be something like a delayed-write
>> I/O error, something the file writer quite likely wants to hear about.
>
>You might be able to report it to the user.  However, it's among those
>errors for which, I think, if you consider actual use cases carefully,
>it is least likely that you can actually take corrective action.  After
>all, you've closed the file.  Across a close, all kinds of normal Unix
>I/O semantics you might expect are simply not going to hold...

For the 2 errno entries listed in close(2):

EBADF: Programming error.
EINTR: User could re-try.

Both sound nice to report back.

christos