linux-kernel - Re: [PATCH v2 1/4] array_size.h: Add ARRAY

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Message-ID: <202511092053.40sHnHlA-lkp@intel.com>
Date: Sun, 9 Nov 2025 21:14:59 +0800
From: kernel test robot <lkp@...el.com>
To: Alejandro Colomar <alx@...nel.org>, linux-kernel@...r.kernel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	Alejandro Colomar <alx@...nel.org>, Kees Cook <kees@...nel.org>,
	Christopher Bazley <chris.bazley.wg14@...il.com>,
	Rasmus Villemoes <linux@...musvillemoes.dk>,
	Marco Elver <elver@...gle.com>, Michal Hocko <mhocko@...e.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	Alexander Potapenko <glider@...gle.com>,
	Dmitry Vyukov <dvyukov@...gle.com>, Jann Horn <jannh@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Memory Management List <linux-mm@...ck.org>
Subject: Re: [PATCH v2 1/4] array_size.h: Add ARRAY_END()

Hi Alejandro,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 6146a0f1dfae5d37442a9ddcba012add260bceb0]

url:    https://github.com/intel-lab-lkp/linux/commits/Alejandro-Colomar/array_size-h-Add-ARRAY_END/20251109-062234
base:   6146a0f1dfae5d37442a9ddcba012add260bceb0
patch link:    https://lore.kernel.org/r/35255c1ceb54518779a45351dcd79a3c1910818a.1762637046.git.alx%40kernel.org
patch subject: [PATCH v2 1/4] array_size.h: Add ARRAY_END()
config: x86_64-randconfig-001-20251109 (https://download.01.org/0day-ci/archive/20251109/202511092053.40sHnHlA-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251109/202511092053.40sHnHlA-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202511092053.40sHnHlA-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/block/floppy.c:4805:9: warning: 'ARRAY_END' macro redefined [-Wmacro-redefined]
    4805 | #define ARRAY_END(X) (&((X)[ARRAY_SIZE(X)]))
         |         ^
   include/linux/array_size.h:17:9: note: previous definition is here
      17 | #define ARRAY_END(a)  (a + ARRAY_SIZE(a))
         |         ^
   1 warning generated.


vim +/ARRAY_END +4805 drivers/block/floppy.c

5a74db06cc8d36 Philippe De Muyter 2009-02-18  4804  
5a74db06cc8d36 Philippe De Muyter 2009-02-18 @4805  #define ARRAY_END(X) (&((X)[ARRAY_SIZE(X)]))
5a74db06cc8d36 Philippe De Muyter 2009-02-18  4806  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki