netdev - Re: [patch] poll.2: timeout_ts is a pointer, so use -> not . for member access

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Date:	Wed, 23 Dec 2015 23:29:13 +0100
From:	"Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>
To:	"richardvoigt@...il.com" <richardvoigt@...il.com>
Cc:	linux-man <linux-man@...r.kernel.org>,
	netdev <netdev@...r.kernel.org>
Subject: Re: [patch] poll.2: timeout_ts is a pointer, so use -> not . for
 member access

Hello Richard,

On 23 December 2015 at 20:30, richardvoigt@...il.com
<richardvoigt@...il.com> wrote:
> From the context, it is apparent that in the code explaining ppoll in
> terms of poll, timeout_ts must be a pointer.
>
> Usage #1:   ready = ppoll(&fds, nfds, timeout_ts, &sigmask);
>
> Usage #2:    (timeout_ts == NULL)
>
> Thus member access in (timeout_ts.tv_sec * 1000 + timeout_ts.tv_nsec /
> 1000000) is an error.

Thanks. Patch applied.

Cheers,

Michael


> man2/poll.2 | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/man2/poll.2 b/man2/poll.2
> index bcbecad..34b55a6 100644
> --- a/man2/poll.2
> +++ b/man2/poll.2
> @@ -266,7 +266,7 @@ executing the following calls:
>      int timeout;
>
>      timeout = (timeout_ts == NULL) ? \-1 :
> -              (timeout_ts.tv_sec * 1000 + timeout_ts.tv_nsec / 1000000);
> +              (timeout_ts\->tv_sec * 1000 + timeout_ts\->tv_nsec / 1000000);
>      pthread_sigmask(SIG_SETMASK, &sigmask, &origmask);
>      ready = poll(&fds, nfds, timeout);
>      pthread_sigmask(SIG_SETMASK, &origmask, NULL);



-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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