netdev - Re: [PATCH iproute2] Fix compile warning in get_addr

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Message-ID: <20161214193001.4857e756@xeon-e3>
Date:   Wed, 14 Dec 2016 19:30:01 -0800
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     David Ahern <dsa@...ulusnetworks.com>
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH iproute2] Fix compile warning in get_addr_1

On Tue, 13 Dec 2016 15:34:32 -0800
David Ahern <dsa@...ulusnetworks.com> wrote:

> A recent cleanup causes a compile warning on Debian jessie:
> 
>     CC       utils.o
> utils.c: In function ‘get_addr_1’:
> utils.c:486:21: warning: passing argument 1 of ‘ll_addr_a2n’ from incompatible pointer type
>    len = ll_addr_a2n(&addr->data, sizeof(addr->data), name);
>                      ^
> In file included from utils.c:34:0:
> ../include/rt_names.h:27:5: note: expected ‘char *’ but argument is of type ‘__u32 (*)[8]’
>  int ll_addr_a2n(char *lladdr, int len, const char *arg);
>      ^
> 
> Revert the removal of the typecast
> 
> Fixes: e1933b928125 ("utils: cleanup style")
> Signed-off-by: David Ahern <dsa@...ulusnetworks.com>
> ---
>  lib/utils.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/lib/utils.c b/lib/utils.c
> index 316b048abcfc..83c9d097c608 100644
> --- a/lib/utils.c
> +++ b/lib/utils.c
> @@ -483,7 +483,8 @@ int get_addr_1(inet_prefix *addr, const char *name, int family)
>  	if (family == AF_PACKET) {
>  		int len;
>  
> -		len = ll_addr_a2n(&addr->data, sizeof(addr->data), name);
> +		len = ll_addr_a2n((char *) &addr->data, sizeof(addr->data),
> +				  name);
>  		if (len < 0)
>  			return -1;
>  

Thanks was accidental.