linux-kernel - include/linux/compiler_types.h:338:45: error: call to '__compiletime_assert_248' declared with attribute error: BUILD_BUG

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Message-ID: <202411302220.FJF9oo16-lkp@intel.com>
Date: Sat, 30 Nov 2024 22:57:55 +0800
From: kernel test robot <lkp@...el.com>
To: Will Deacon <will@...nel.org>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: include/linux/compiler_types.h:338:45: error: call to
 '__compiletime_assert_248' declared with attribute error: BUILD_BUG_ON
 failed: (24-12) >= 12

Hi Will,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   2ba9f676d0a2e408aef14d679984c26373bf37b7
commit: eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5 compiler.h: Move compiletime_assert() macros into compiler_types.h
date:   4 years, 4 months ago
config: arc-randconfig-r131-20241118 (https://download.01.org/0day-ci/archive/20241130/202411302220.FJF9oo16-lkp@intel.com/config)
compiler: arc-elf-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20241130/202411302220.FJF9oo16-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/202411302220.FJF9oo16-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from <command-line>:
   mm/huge_memory.c: In function 'hugepage_init':
>> include/linux/compiler_types.h:338:45: error: call to '__compiletime_assert_248' declared with attribute error: BUILD_BUG_ON failed: (24-12) >= 12
     338 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |                                             ^
   include/linux/compiler_types.h:319:25: note: in definition of macro '__compiletime_assert'
     319 |                         prefix ## suffix();                             \
         |                         ^~~~~~
   include/linux/compiler_types.h:338:9: note: in expansion of macro '_compiletime_assert'
     338 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
         |         ^~~~~~~~~~~~~~~~
   include/linux/bug.h:24:25: note: in expansion of macro 'BUILD_BUG_ON'
      24 |                         BUILD_BUG_ON(cond);             \
         |                         ^~~~~~~~~~~~
   mm/huge_memory.c:403:9: note: in expansion of macro 'MAYBE_BUILD_BUG_ON'
     403 |         MAYBE_BUILD_BUG_ON(HPAGE_PMD_ORDER >= MAX_ORDER);
         |         ^~~~~~~~~~~~~~~~~~


vim +/__compiletime_assert_248 +338 include/linux/compiler_types.h

   324	
   325	#define _compiletime_assert(condition, msg, prefix, suffix) \
   326		__compiletime_assert(condition, msg, prefix, suffix)
   327	
   328	/**
   329	 * compiletime_assert - break build and emit msg if condition is false
   330	 * @condition: a compile-time constant condition to check
   331	 * @msg:       a message to emit if condition is false
   332	 *
   333	 * In tradition of POSIX assert, this macro will break the build if the
   334	 * supplied condition is *false*, emitting the supplied error message if the
   335	 * compiler has support to do so.
   336	 */
   337	#define compiletime_assert(condition, msg) \
 > 338		_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
   339	

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