Re: [PATCH 01/12] common/cpt: fix build with GCC 12

[David Marchand <david.marchand@redhat.com>]

Hello maintainers,

On Wed, May 18, 2022 at 12:17 PM David Marchand
<david.marchand@redhat.com> wrote:
>
> GCC 12 raises the following warning:
>
> In function ‘fill_sg_comp_from_iov’,
>     inlined from ‘cpt_kasumi_enc_prep’ at
>         ../drivers/common/cpt/cpt_ucode.h:2176:8,
>     inlined from ‘cpt_fc_enc_hmac_prep’ at
>         ../drivers/common/cpt/cpt_ucode.h:2475:3,
>     inlined from ‘fill_digest_params’ at
>         ../drivers/common/cpt/cpt_ucode.h:3548:14,
>     inlined from ‘otx_cpt_enq_single_sym’ at
>         ../drivers/crypto/octeontx/otx_cryptodev_ops.c:541:9,
>     inlined from ‘otx_cpt_enq_single_sym_sessless’ at
>         ../drivers/crypto/octeontx/otx_cryptodev_ops.c:584:8,
>     inlined from ‘otx_cpt_enq_single’ at
>         ../drivers/crypto/octeontx/otx_cryptodev_ops.c:611:11,
>     inlined from ‘otx_cpt_pkt_enqueue’ at
>         ../drivers/crypto/octeontx/otx_cryptodev_ops.c:643:9,
>     inlined from ‘otx_cpt_enqueue_sym’ at
>         ../drivers/crypto/octeontx/otx_cryptodev_ops.c:668:9:
> ../drivers/common/cpt/cpt_ucode.h:415:36: error: array subscript 0 is
>         outside array bounds of ‘buf_ptr_t[0]’ {aka ‘struct buf_ptr[]’}
>         [-Werror=array-bounds]
>   415 |                         e_dma_addr = bufs[j].dma_addr;
>       |                         ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~
> ../drivers/common/cpt/cpt_ucode.h:416:48: error: array subscript 0 is
>         outside array bounds of ‘buf_ptr_t[0]’ {aka ‘struct buf_ptr[]’}
>         [-Werror=array-bounds]
>   416 |                         e_len = (size > bufs[j].size) ?
>       |                                         ~~~~~~~^~~~~
>
> For now, waive this warning until we have a proper fix.

Both common/cpt and crypto/cnxk have the same code that triggers this warning.
Can you look into this please?

Thanks.

-- 
David Marchand