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Date:   Thu, 31 Dec 2020 22:49:07 +0800
From:   kernel test robot <lkp@...el.com>
To:     Tian Tao <tiantao6@...ilicon.com>, gregkh@...uxfoundation.org,
        jirislaby@...nel.org
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] vt: use flexible-array member instead of zero-length
 array

Hi Tian,

I love your patch! Yet something to improve:

[auto build test ERROR on tty/tty-testing]
[also build test ERROR on v5.11-rc1 next-20201223]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Tian-Tao/vt-use-flexible-array-member-instead-of-zero-length-array/20201231-200832
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing
config: microblaze-randconfig-r015-20201231 (attached as .config)
compiler: microblaze-linux-gcc (GCC) 9.3.0
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://github.com/0day-ci/linux/commit/c44b31ae1f6fc407170012bd6b5251e869299619
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Tian-Tao/vt-use-flexible-array-member-instead-of-zero-length-array/20201231-200832
        git checkout c44b31ae1f6fc407170012bd6b5251e869299619
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=microblaze 

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

All errors (new ones prefixed by >>):

>> drivers/tty/vt/vt.c:335:12: error: flexible array member in a struct with no named members
     335 |  char32_t *lines[];
         |            ^~~~~


vim +335 drivers/tty/vt/vt.c

   329	
   330	/*
   331	 * Our screen buffer is preceded by an array of line pointers so that
   332	 * scrolling only implies some pointer shuffling.
   333	 */
   334	struct uni_screen {
 > 335		char32_t *lines[];
   336	};
   337	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (23808 bytes)

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