Re: __attribute__((warn_unused_result)) for NetBSD?

[Aleksey Cheusov <cheusov%tut.by@localhost>]

> In general EBADF is meaningless on close.
Yes, EBADF is not a big problem.

> Isn't it only possible to get EINTR on non-blocking I/O? Otherwise
> isn't this an auto-restarted call?
AFAIK SA_RESTART is BSD-ism and is absent on many systems.

> Anyways, for the most part all common usages of close don't need
> warnings about missing the return value that I can see.
I personally disagree. The following is much more robust approach.

void xclose (int fd)
{
        int ret;
        do {
                ret = close (fd);
        }while (ret == -1 && errno == EINTR);

        if (ret == -1){
                perror("perror failed");
                exit (1);
        }
}

The same for read(2), write(2) and many others.

-- 
Best regards, Aleksey Cheusov.