Re: [PATCH][next] ASoC: uapi: Replace zero-length arrays with __DECLARE_FLEX_ARRAY() helper

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Hi Takashi,

I wonder if this can go through your tree.

It's already been reviewed by a couple of people. :)

Thanks
--
Gustavo

On 9/26/22 18:18, Gustavo A. R. Silva wrote:
Zero-length arrays are deprecated and we are moving towards adopting
C99 flexible-array members, instead. So, replace zero-length arrays
declarations in anonymous union with the new __DECLARE_FLEX_ARRAY()
helper macro.

This helper allows for flexible-array members in unions.

Link: https://github.com/KSPP/linux/issues/193
Link: https://github.com/KSPP/linux/issues/227
Link: https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx>
---
  include/uapi/sound/asoc.h | 6 +++---
  1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/uapi/sound/asoc.h b/include/uapi/sound/asoc.h
index 053949287ce8..dd8ad790fc15 100644
--- a/include/uapi/sound/asoc.h
+++ b/include/uapi/sound/asoc.h
@@ -226,9 +226,9 @@ struct snd_soc_tplg_vendor_array {
  	__le32 type;	/* SND_SOC_TPLG_TUPLE_TYPE_ */
  	__le32 num_elems;	/* number of elements in array */
  	union {
-		struct snd_soc_tplg_vendor_uuid_elem uuid[0];
-		struct snd_soc_tplg_vendor_value_elem value[0];
-		struct snd_soc_tplg_vendor_string_elem string[0];
+		__DECLARE_FLEX_ARRAY(struct snd_soc_tplg_vendor_uuid_elem, uuid);
+		__DECLARE_FLEX_ARRAY(struct snd_soc_tplg_vendor_value_elem, value);
+		__DECLARE_FLEX_ARRAY(struct snd_soc_tplg_vendor_string_elem, string);
  	};
  } __attribute__((packed));



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