netdev - Re: [PATCH iproute2-next] ss: fix the compiler warning

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Date: Sat, 9 Mar 2024 11:22:34 -0700
From: David Ahern <dsahern@...nel.org>
To: Denis Kirjanov <kirjanov@...il.com>, stephen@...workplumber.org
Cc: netdev@...r.kernel.org, Denis Kirjanov <dkirjanov@...e.de>
Subject: Re: [PATCH iproute2-next] ss: fix the compiler warning

On 3/7/24 3:53 AM, Denis Kirjanov wrote:
> the patch fixes the following compiler warning:
> 
> ss.c:1064:53: warning: format string is not a string literal [-Wformat-nonliteral]
>         len = vsnprintf(pos, buf_chunk_avail(buffer.tail), fmt, _args);
>                                                            ^~~
> 1 warning generated.
>     LINK     ss
> 
> Fixes: e3ecf0485 ("ss: pretty-print BPF socket-local storage")
> Signed-off-by: Denis Kirjanov <dkirjanov@...e.de>
> ---
>  misc/ss.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/misc/ss.c b/misc/ss.c
> index 87008d7c..038905f3 100644
> --- a/misc/ss.c
> +++ b/misc/ss.c
> @@ -1042,6 +1042,7 @@ static int buf_update(int len)
>  }
>  
>  /* Append content to buffer as part of the current field */
> +__attribute__((format(printf, 1, 0)))
>  static void vout(const char *fmt, va_list args)
>  {
>  	struct column *f = current_field;

The error message does not align with the change - and it does not fix
the warning.

pw-bot: cr