Re: [PATCH net v1] selftests: iou-zcrx: Clean up build warnings for error format

[Simon Horman]

On Fri, May 02, 2025 at 12:22:20PM +0800, Haiyue Wang wrote:
> Clean up two build warnings:
> 
> [1]:
> iou-zcrx.c: In function ‘process_recvzc’:
> iou-zcrx.c:263:37: warning: too many arguments for
>   format [-Wformat-extra-args]
>   263 |               error(1, 0, "payload mismatch at ", i);
>       |                           ^~~~~~~~~~~~~~~~~~~~~~
> 
> [2]:
> iou-zcrx.c: In function ‘run_client’:
> iou-zcrx.c:357:47: warning: format ‘%d’ expects argument of
>   type ‘int’, but argument 4 has
>   type ‘ssize_t’ {aka ‘long int’} [-Wformat=]
>   357 |               error(1, 0, "send(): %d", sent);
>       |                                    ~^   ~~~~
>       |                                     |   |
>       |                                     int ssize_t {aka long int}
>       |                                    %ld
> 
> Signed-off-by: Haiyue Wang <haiyuewa@xxxxxxx>

Hi Haiyue Wang,

This feels more like a clean-up for net-next than a bug-fix to net.

> ---
>  tools/testing/selftests/drivers/net/hw/iou-zcrx.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/tools/testing/selftests/drivers/net/hw/iou-zcrx.c b/tools/testing/selftests/drivers/net/hw/iou-zcrx.c
> index c26b4180eddd..19e1ff45deb4 100644
> --- a/tools/testing/selftests/drivers/net/hw/iou-zcrx.c
> +++ b/tools/testing/selftests/drivers/net/hw/iou-zcrx.c
> @@ -260,7 +260,7 @@ static void process_recvzc(struct io_uring *ring, struct io_uring_cqe *cqe)
>  
>  	for (i = 0; i < n; i++) {
>  		if (*(data + i) != payload[(received + i)])
> -			error(1, 0, "payload mismatch at ", i);
> +			error(1, 0, "payload mismatch at %d", i);
>  	}
>  	received += n;
>  
> @@ -354,7 +354,7 @@ static void run_client(void)
>  		chunk = min_t(ssize_t, cfg_payload_len, to_send);
>  		res = send(fd, src, chunk, 0);
>  		if (res < 0)
> -			error(1, 0, "send(): %d", sent);
> +			error(1, 0, "send(): %ld", sent);

As the type of sent is ssize_t I think that "%zd" would be best here.

>  		sent += res;
>  		to_send -= res;
>  	}
> -- 
> 2.49.0
> 
> 

-- 
pw-bot: changes-requested