Re: [sj:damon/next 18/24] mm/damon/sysfs.c:96:30: error: 'counted_by' only applies to C99 flexible array members

[SeongJae Park <sj@kernel.org>]

Hello,

On Tue, 19 Dec 2023 05:30:54 +0800 kernel test robot <lkp@intel.com> wrote:

> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/sj/linux.git damon/next
> head:   04cc9f72453632bf9e13e06f85c11147583e5d5d
> commit: 375af4a6e206c1aeb2edb1d80cbb42fd3349b287 [18/24] mm/damon/sysfs: add __counted_by() annotation
> config: arm-randconfig-001-20231219 (https://download.01.org/0day-ci/archive/20231219/202312190546.yhWbDA8A-lkp@intel.com/config)
> compiler: clang version 18.0.0git (https://github.com/llvm/llvm-project 5ac12951b4e9bbfcc5791282d0961ec2b65575e9)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231219/202312190546.yhWbDA8A-lkp@intel.com/reproduce)
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202312190546.yhWbDA8A-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
> 
> >> mm/damon/sysfs.c:96:30: error: 'counted_by' only applies to C99 flexible array members
>       96 |         struct damon_sysfs_region **regions_arr __counted_by(nr);
>          |                                     ^~~~~~~~~~~
>    mm/damon/sysfs.c:292:30: error: 'counted_by' only applies to C99 flexible array members
>      292 |         struct damon_sysfs_target **targets_arr __counted_by(nr);
>          |                                     ^~~~~~~~~~~
>    mm/damon/sysfs.c:815:31: error: 'counted_by' only applies to C99 flexible array members
>      815 |         struct damon_sysfs_context **contexts_arr __counted_by(nr);
>          |                                      ^~~~~~~~~~~~
>    mm/damon/sysfs.c:1666:31: error: 'counted_by' only applies to C99 flexible array members
>     1666 |         struct damon_sysfs_kdamond **kdamonds_arr __counted_by(nr);
>          |                                      ^~~~~~~~~~~~
>    4 errors generated.
> 
> 
> vim +/counted_by +96 mm/damon/sysfs.c
> 
>     89	
>     90	/*
>     91	 * init_regions directory
>     92	 */
>     93	
>     94	struct damon_sysfs_regions {
>     95		struct kobject kobj;
>   > 96		struct damon_sysfs_region **regions_arr __counted_by(nr);
>     97		int nr;
>     98	};
>     99	

Thank you for this report.  I will remove the commit from the tree.


Thanks,
SJ

> 
> -- 
> 0-DAY CI Kernel Test Service
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