[dpdk-dev] [PATCH v2] examples/ntb: fix build issue with GCC 13

[David Marchand]

On Thu, May 4, 2023 at 10:54 AM <jerinj at marvell.com> wrote:
>
> From: Jerin Jacob <jerinj at marvell.com>
>
> Fix the following build issue by not allowing nb_ids to be zero.
> nb_ids can be zero based on rte_rawdev_xstats_get() API
> documentation but it is not valid for the case when second
> argument is NULL.
>
> examples/ntb/ntb_fwd.c: In function 'ntb_stats_display':
> examples/ntb/ntb_fwd.c:945:23: error: 'rte_rawdev_xstats_get'
> accessing 8 bytes in a region of size 0 [-Werror=stringop-overflow=]
>   945 | if (nb_ids != rte_rawdev_xstats_get(dev_id, ids, values, nb_ids)) {
>       |               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> examples/ntb/ntb_fwd.c:945:23: note: referencing argument 3
> of type 'uint64_t[0]' {aka 'long unsigned int[]'}
> In file included from ../examples/ntb/ntb_fwd.c:17:
> lib/rawdev/rte_rawdev.h:504:1: note: in a call to function
> 'rte_rawdev_xstats_get'
>   504 | rte_rawdev_xstats_get(uint16_t dev_id,
>
> Fixes: 5194299d6ef5 ("examples/ntb: support more functions")
> Cc: stable at dpdk.org

> Signed-off-by: Jerin Jacob <jerinj at marvell.com>
> Tested-by: Ali Alnubani <alialnu at nvidia.com>
Acked-by: Junfeng Guo <junfeng.guo at intel.com>
Tested-by: Daxue Gao <daxuex.gao at intel.com>

Applied, thanks.


-- 
David Marchand