Zero-length arrays are deprecated[1] and we are moving towards
adopting C99 flexible-array members instead. So, replace zero-length
arrays, in a couple of structures, with flex-array members.
This helps with the ongoing efforts to tighten the FORTIFY_SOURCE
routines on memcpy() and help us make progress towards globally
enabling -fstrict-flex-arrays=3 [2].
Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays [1]
Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [2]
Link: https://github.com/KSPP/linux/issues/78
Signed-off-by: Gustavo A. R. Silva <[email protected]>
---
drivers/infiniband/hw/erdma/erdma_hw.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/infiniband/hw/erdma/erdma_hw.h b/drivers/infiniband/hw/erdma/erdma_hw.h
index ab371fec610c..4c38d99c73f1 100644
--- a/drivers/infiniband/hw/erdma/erdma_hw.h
+++ b/drivers/infiniband/hw/erdma/erdma_hw.h
@@ -397,7 +397,7 @@ struct erdma_write_sqe {
__le32 rsvd;
- struct erdma_sge sgl[0];
+ struct erdma_sge sgl[];
};
struct erdma_send_sqe {
@@ -408,7 +408,7 @@ struct erdma_send_sqe {
};
__le32 length;
- struct erdma_sge sgl[0];
+ struct erdma_sge sgl[];
};
struct erdma_readreq_sqe {
--
2.34.1
On 1/10/23 9:40 AM, Gustavo A. R. Silva wrote:
> Zero-length arrays are deprecated[1] and we are moving towards
> adopting C99 flexible-array members instead. So, replace zero-length
> arrays, in a couple of structures, with flex-array members.
>
> This helps with the ongoing efforts to tighten the FORTIFY_SOURCE
> routines on memcpy() and help us make progress towards globally
> enabling -fstrict-flex-arrays=3 [2].
>
> Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays [1]
> Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [2]
> Link: https://github.com/KSPP/linux/issues/78
> Signed-off-by: Gustavo A. R. Silva <[email protected]>
> ---
> drivers/infiniband/hw/erdma/erdma_hw.h | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
Acked-by: Cheng Xu <[email protected]>
Thanks very much,
Cheng Xu
> diff --git a/drivers/infiniband/hw/erdma/erdma_hw.h b/drivers/infiniband/hw/erdma/erdma_hw.h
> index ab371fec610c..4c38d99c73f1 100644
> --- a/drivers/infiniband/hw/erdma/erdma_hw.h
> +++ b/drivers/infiniband/hw/erdma/erdma_hw.h
> @@ -397,7 +397,7 @@ struct erdma_write_sqe {
>
> __le32 rsvd;
>
> - struct erdma_sge sgl[0];
> + struct erdma_sge sgl[];
> };
>
> struct erdma_send_sqe {
> @@ -408,7 +408,7 @@ struct erdma_send_sqe {
> };
>
> __le32 length;
> - struct erdma_sge sgl[0];
> + struct erdma_sge sgl[];
> };
>
> struct erdma_readreq_sqe {
On Mon, Jan 09, 2023 at 07:40:22PM -0600, Gustavo A. R. Silva wrote:
> Zero-length arrays are deprecated[1] and we are moving towards
> adopting C99 flexible-array members instead. So, replace zero-length
> arrays, in a couple of structures, with flex-array members.
>
> This helps with the ongoing efforts to tighten the FORTIFY_SOURCE
> routines on memcpy() and help us make progress towards globally
> enabling -fstrict-flex-arrays=3 [2].
>
> Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays [1]
> Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [2]
> Link: https://github.com/KSPP/linux/issues/78
> Signed-off-by: Gustavo A. R. Silva <[email protected]>
Reviewed-by: Kees Cook <[email protected]>
--
Kees Cook
On Mon, 09 Jan 2023 19:40:22 -0600, Gustavo A. R. Silva wrote:
> Zero-length arrays are deprecated[1] and we are moving towards
> adopting C99 flexible-array members instead. So, replace zero-length
> arrays, in a couple of structures, with flex-array members.
>
> This helps with the ongoing efforts to tighten the FORTIFY_SOURCE
> routines on memcpy() and help us make progress towards globally
> enabling -fstrict-flex-arrays=3 [2].
>
> [...]
Applied, thanks!
[1/1] RDMA/erdma: Replace zero-length arrays with flexible-array members
https://git.kernel.org/rdma/rdma/c/ed73a505480d54
Best regards,
--
Leon Romanovsky <[email protected]>