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Re: [PATCH net-next 8/8] wifi: carl9170: silence a GCC 12 -Warray-bounds warning

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On 20/05/2022 21:43, Jakub Kicinski wrote:
carl9170 has a big union (struct carl9170_cmd) with all the command
types in it. But it allocates buffers only large enough for a given
command. This upsets GCC 12:

drivers/net/wireless/ath/carl9170/cmd.c:125:30: warning: array subscript ‘struct carl9170_cmd[0]’ is partly outside array bounds of ‘unsigned char[8]’ [-Warray-bounds]
   125 |                 tmp->hdr.cmd = cmd;
       |                 ~~~~~~~~~~~~~^~~~~

Punt the warning to W=1 for now. Hopefully GCC will learn to
recognize which fields are in-bounds.

Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Acked-by: Christian Lamparter <chunkeey@xxxxxxxxx>




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