small issue in getifaddrs(3) man page

small issue in getifaddrs(3) man page

[Michael Galassi]

Hi,

The getifaddrs(3) man page has some sample code which includes a for
loop wich initializes and increments an in named "n" which is never
used.  This is slightly confusing (but in no way wrong).  The page
would be clearer if this variable declaration, initialization, and
increment were removed.

The two lines in question are:
           int family, s, n;
...
           for (ifa = ifaddr, n = 0; ifa != NULL; ifa = ifa->ifa_next, n++) {

Thanks.

-michael

Re: small issue in getifaddrs(3) man page

[Michael Kerrisk (man-pages)]

Hello Michael,

On Fri, 28 Feb 2020 at 16:34, Michael Galassi <michael@galassi.us> wrote:
>
> Hi,
>
> The getifaddrs(3) man page has some sample code which includes a for
> loop wich initializes and increments an in named "n" which is never
> used.  This is slightly confusing (but in no way wrong).  The page
> would be clearer if this variable declaration, initialization, and
> increment were removed.

Agreed. (And mea culpa.) I've made the change as you suggest. Thanks
for the report!

Cheers,

Michael

>
> The two lines in question are:
>            int family, s, n;
> ...
>            for (ifa = ifaddr, n = 0; ifa != NULL; ifa = ifa->ifa_next, n++) {
>
> Thanks.
>
> -michael



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