linux-kernel - [gustavoars:totally-untested/remaining-fam0 1/2] sound/pci/hda/patch_hdmi.c:232:5: error: flexible array member 'bytes' in a union is not allowed

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Date:   Fri, 12 Aug 2022 21:21:33 +0800
From:   kernel test robot <lkp@...el.com>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [gustavoars:totally-untested/remaining-fam0 1/2]
 sound/pci/hda/patch_hdmi.c:232:5: error: flexible array member 'bytes' in a
 union is not allowed

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git totally-untested/remaining-fam0
head:   b0684d2f714f4ae515c283697c48d14e3ccef21b
commit: 9b8e2a44bb97e6316a5d268f9812543e2f6f1d44 [1/2] totally-untested: remaining zero-length arrays in unions in next-20220811
config: i386-randconfig-a011 (https://download.01.org/0day-ci/archive/20220812/202208122119.FT6MKKrV-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 5f1c7e2cc5a3c07cbc2412e851a7283c1841f520)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git/commit/?id=9b8e2a44bb97e6316a5d268f9812543e2f6f1d44
        git remote add gustavoars https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git
        git fetch --no-tags gustavoars totally-untested/remaining-fam0
        git checkout 9b8e2a44bb97e6316a5d268f9812543e2f6f1d44
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash sound/pci/hda/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

>> sound/pci/hda/patch_hdmi.c:232:5: error: flexible array member 'bytes' in a union is not allowed
           u8 bytes[];
              ^
   1 error generated.


vim +/bytes +232 sound/pci/hda/patch_hdmi.c

   228	
   229	union audio_infoframe {
   230		struct hdmi_audio_infoframe hdmi;
   231		struct dp_audio_infoframe dp;
 > 232		u8 bytes[];
   233	};
   234	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp