Hi Vincent, kernel test robot noticed the following build errors: [auto build test ERROR on akpm-mm/mm-everything] [also build test ERROR on linus/master v6.7-rc3 next-20231130] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Vincent-Mailhol/lib-test_bitops-add-compile-time-optimization-evaluations-assertions/20231130-182837 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20231130102717.1297492-1-mailhol.vincent%40wanadoo.fr patch subject: [PATCH v2] lib: test_bitops: add compile-time optimization/evaluations assertions config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20231201/202312010058.JJKeeqvE-lkp@xxxxxxxxx/config) compiler: m68k-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231201/202312010058.JJKeeqvE-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202312010058.JJKeeqvE-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from <command-line>: In function 'test_bitops_const_eval', inlined from 'test_bitops_startup' at lib/test_bitops.c:126:2: >> include/linux/compiler_types.h:435:45: error: call to '__compiletime_assert_183' declared with attribute error: BUILD_BUG_ON failed: !__builtin_constant_p(__test_expr) 435 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:416:25: note: in definition of macro '__compiletime_assert' 416 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:435:9: note: in expansion of macro '_compiletime_assert' 435 | _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) | ^~~~~~~~~~~~~~~~ lib/test_bitops.c:59:9: note: in expansion of macro 'BUILD_BUG_ON' 59 | BUILD_BUG_ON(!__builtin_constant_p(__test_expr)); \ | ^~~~~~~~~~~~ lib/test_bitops.c:74:9: note: in expansion of macro 'test_const_eval' 74 | test_const_eval(__ffs(BIT(n)) == n); | ^~~~~~~~~~~~~~~ vim +/__compiletime_assert_183 +435 include/linux/compiler_types.h eb5c2d4b45e3d2 Will Deacon 2020-07-21 421 eb5c2d4b45e3d2 Will Deacon 2020-07-21 422 #define _compiletime_assert(condition, msg, prefix, suffix) \ eb5c2d4b45e3d2 Will Deacon 2020-07-21 423 __compiletime_assert(condition, msg, prefix, suffix) eb5c2d4b45e3d2 Will Deacon 2020-07-21 424 eb5c2d4b45e3d2 Will Deacon 2020-07-21 425 /** eb5c2d4b45e3d2 Will Deacon 2020-07-21 426 * compiletime_assert - break build and emit msg if condition is false eb5c2d4b45e3d2 Will Deacon 2020-07-21 427 * @condition: a compile-time constant condition to check eb5c2d4b45e3d2 Will Deacon 2020-07-21 428 * @msg: a message to emit if condition is false eb5c2d4b45e3d2 Will Deacon 2020-07-21 429 * eb5c2d4b45e3d2 Will Deacon 2020-07-21 430 * In tradition of POSIX assert, this macro will break the build if the eb5c2d4b45e3d2 Will Deacon 2020-07-21 431 * supplied condition is *false*, emitting the supplied error message if the eb5c2d4b45e3d2 Will Deacon 2020-07-21 432 * compiler has support to do so. eb5c2d4b45e3d2 Will Deacon 2020-07-21 433 */ eb5c2d4b45e3d2 Will Deacon 2020-07-21 434 #define compiletime_assert(condition, msg) \ eb5c2d4b45e3d2 Will Deacon 2020-07-21 @435 _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) eb5c2d4b45e3d2 Will Deacon 2020-07-21 436 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
