> -----Original Message-----
> From: jer...@marvell.com <jer...@marvell.com>
> Sent: Tuesday, May 2, 2023 4:51 PM
> To: dev@dpdk.org; Jingjing Wu <jingjing...@intel.com>; Junfeng Guo
> <junfeng....@intel.com>; Xiaoyun Li <xiaoyun...@intel.com>
> Cc: NBU-Contact-Thomas Monjalon (EXTERNAL) <tho...@monjalon.net>;
> david.march...@redhat.com; ferruh.yi...@xilinx.com;
> step...@networkplumber.org; Jerin Jacob <jer...@marvell.com>;
> sta...@dpdk.org
> Subject: [dpdk-dev] [PATCH v1] examples/ntb: fix build issue with GCC 13
>
> From: Jerin Jacob <jer...@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: sta...@dpdk.org
> Signed-off-by: Jerin Jacob <jer...@marvell.com>
> ---
Resolves the build failure for me on Fedora 38 with gcc 13.1.1.
Tested-by: Ali Alnubani <alia...@nvidia.com>
