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Message-ID: <20250317120447.4fa26083@jic23-huawei> Date: Mon, 17 Mar 2025 12:04:47 +0000 From: Jonathan Cameron <jic23@...nel.org> To: "Gustavo A. R. Silva" <gustavo@...eddedor.com> Cc: Tzung-Bi Shih <tzungbi@...nel.org>, "Gustavo A. R. Silva" <gustavoars@...nel.org>, Lars-Peter Clausen <lars@...afoo.de>, Benson Leung <bleung@...omium.org>, Guenter Roeck <groeck@...omium.org>, linux-iio@...r.kernel.org, chrome-platform@...ts.linux.dev, linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org Subject: Re: [PATCH][next] iio: cros_ec: Avoid -Wflex-array-member-not-at-end warning On Mon, 17 Mar 2025 15:10:38 +1030 "Gustavo A. R. Silva" <gustavo@...eddedor.com> wrote: > On 17/03/25 12:02, Tzung-Bi Shih wrote: > > On Mon, Mar 17, 2025 at 11:24:59AM +1030, Gustavo A. R. Silva wrote: > >> static int cros_ec_get_host_cmd_version_mask(struct cros_ec_device *ec_dev, > >> u16 cmd_offset, u16 cmd, u32 *mask) > >> { > >> + DEFINE_RAW_FLEX(struct cros_ec_command, buf, data, > >> + sizeof(struct ec_response_get_cmd_versions)); > > > > max(sizeof(struct ec_params_get_cmd_versions), > > sizeof(struct ec_response_get_cmd_versions))? > > I considered that, but DEFINE_RAW_FLEX() complains about it due to the > > _Static_assert(__builtin_constant_p(count), \ > "onstack flex array members require compile-time const count"); > Maybe add an assert that you indeed have the larger of the two + a comment on why it matters? > -- > Gustavo >
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