From: "Morten Brørup" <mb@smartsharesystems.com>
To: "Stephen Hemminger" <stephen@networkplumber.org>, <dev@dpdk.org>
Cc: "Andrew Rybchenko" <andrew.rybchenko@oktetlabs.ru>
Subject: RE: [PATCH] common/sfc: replace out of bounds condition with static_assert
Date: Fri, 19 Jan 2024 00:05:13 +0100 [thread overview]
Message-ID: <98CBD80474FA8B44BF855DF32C47DC35E9F178@smartserver.smartshare.dk> (raw)
In-Reply-To: <20240118201843.189978-1-stephen@networkplumber.org>
> From: Stephen Hemminger [mailto:stephen@networkplumber.org]
> Sent: Thursday, 18 January 2024 21.18
>
> The sfc base code had its own definition of static assertions
> using the out of bound array access hack. Replace it with a
> static_assert like rte_common.h.
>
> Fixes: f67e4719147d ("net/sfc/base: fix coding style")
> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
> ---
> drivers/common/sfc_efx/base/efx.h | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/common/sfc_efx/base/efx.h
> b/drivers/common/sfc_efx/base/efx.h
> index 3312c2fa8f81..9ce266c43610 100644
> --- a/drivers/common/sfc_efx/base/efx.h
> +++ b/drivers/common/sfc_efx/base/efx.h
> @@ -17,8 +17,8 @@
> extern "C" {
> #endif
>
> -#define EFX_STATIC_ASSERT(_cond) \
> - ((void)sizeof (char[(_cond) ? 1 : -1]))
> +#define EFX_STATIC_ASSERT(_cond) \
> + do { static_assert((_cond), "assert failed" #_cond); } while (0)
This probably works for the DPDK project.
For other projects using the same file, it might also need "#include <assert.h>" (containing the static_assert convenience macro for C), and possibly your workaround for toolchain issues with missing C11 macro in FreeBSD. Maybe not in this file, but somewhere.
Acked-by: Morten Brørup <mb@smartsharesystems.com>
next prev parent reply other threads:[~2024-01-18 23:05 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-18 20:18 Stephen Hemminger
2024-01-18 23:05 ` Morten Brørup [this message]
2024-02-13 7:47 ` Andrew Rybchenko
2024-01-19 22:13 ` [PATCH v2] " Stephen Hemminger
2024-01-20 7:53 ` Morten Brørup
2024-02-07 19:10 ` Ferruh Yigit
2024-02-07 22:34 ` Stephen Hemminger
2024-02-07 22:36 ` Stephen Hemminger
2024-02-07 23:30 ` Ferruh Yigit
2024-02-11 17:41 ` Stephen Hemminger
2024-02-11 22:24 ` [PATCH] " Stephen Hemminger
2024-02-12 5:48 ` [PATCH v4] " Stephen Hemminger
2024-02-12 12:09 ` Ferruh Yigit
2024-02-13 9:39 ` Ferruh Yigit
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