-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 cros_ec_command` is a flexible structure --a structure
that contains a flexible-array member.

Fix the following warning:

drivers/platform/chrome/cros_ec_proto_test_util.h:16:32: 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@kernel.org>
---
 drivers/platform/chrome/cros_ec_proto_test_util.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/chrome/cros_ec_proto_test_util.h b/drivers/platform/chrome/cros_ec_proto_test_util.h
index 414002271c9c..b17239f052c2 100644
--- a/drivers/platform/chrome/cros_ec_proto_test_util.h
+++ b/drivers/platform/chrome/cros_ec_proto_test_util.h
@@ -13,7 +13,6 @@ struct ec_xfer_mock {
 	struct kunit *test;
 
 	/* input */
-	struct cros_ec_command msg;
 	void *i_data;
 
 	/* output */
@@ -21,6 +20,10 @@ struct ec_xfer_mock {
 	int result;
 	void *o_data;
 	u32 o_data_len;
+
+	/* input */
+	/* Must be last -ends in a flexible-array member. */
+	struct cros_ec_command msg;
 };
 
 extern int cros_kunit_ec_xfer_mock_default_result;
-- 
2.43.0

On Tue, May 06, 2025 at 03:14:01PM -0600, 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 cros_ec_command` is a flexible structure --a structure
> that contains a flexible-array member.
> 
> [...]

Applied to

    https://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux.git for-next

[1/1] platform/chrome: Avoid -Wflex-array-member-not-at-end
      commit: 3e552ccf405c0dea6339988202a564357249c437

Thanks!