Re: [PATCH][next] wifi: ath12k: core.h: Avoid -Wflex-array-member-not-at-end warnings

From: Kees Cook
Date: Mon Apr 07 2025 - 16:30:11 EST


On Mon, Apr 07, 2025 at 11:45:15AM -0700, Jeff Johnson wrote:
> On 4/7/2025 11:39 AM, Kees Cook wrote:
> > On Tue, Mar 11, 2025 at 12:02:15PM +1030, Gustavo A. R. Silva wrote:
> >> -Wflex-array-member-not-at-end was introduced in GCC-14, and we are
> >> getting ready to enable it, globally.
> >>
> >> Move the conflicting declaration to the end of the structure. Notice
> >> that `struct ieee80211_chanctx_conf` is a flexible structure --a
> >> structure that contains a flexible-array member.
> >>
> >> Fix 30 of the following warnings:
> >>
> >> drivers/net/wireless/ath/ath12k/core.h:298:39: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end]
> >>
> >> Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx>
> >
> > Hi, just checking in on this patch. Is some adjustment needed for this
> > to land?
> >
> > Thanks!
>
> There is an alternate solution which should land in the next iteration of
> linux-next (I just enabled the post-merge-window flow from ath-next)
>
> https://lore.kernel.org/all/20250321-ath12k-dont-put-chanctx-in-arvif-v1-1-c8e93061952b@xxxxxxxxxxx/

Ah-ha! Thank you! :)

-Kees

--
Kees Cook