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Message-ID: <677f4f9d-9224-b2d9-1574-f64985fcedbc@linux.intel.com> Date: Tue, 27 Sep 2022 09:37:12 +0200 From: Amadeusz Sławiński <amadeuszx.slawinski@...ux.intel.com> To: "Gustavo A. R. Silva" <gustavoars@...nel.org>, Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com> Cc: alsa-devel@...a-project.org, linux-hardening@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH][next] ASoC: uapi: Replace zero-length arrays with __DECLARE_FLEX_ARRAY() helper On 9/27/2022 1:18 AM, 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@...nel.org> > --- > 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)); > Reviewed-by: Amadeusz Sławiński <amadeuszx.slawinski@...ux.intel.com>
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