Hi Matteo, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linux/master] [also build test WARNING on hch-configfs/for-next linus/master v5.13-rc7 next-20210624] [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/Matteo-Croce/lib-string-optimized-mem-functions/20210625-090352 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 0c18f29aae7ce3dadd26d8ee3505d07cc982df75 config: x86_64-randconfig-a002-20210622 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 9ca0171a9ffdef5fdb1511d197a3fd72490362de) 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 # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://github.com/0day-ci/linux/commit/e9af69e22b4b9fe629d72f5c8b022aca3244cc01 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Matteo-Croce/lib-string-optimized-mem-functions/20210625-090352 git checkout e9af69e22b4b9fe629d72f5c8b022aca3244cc01 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> lib/string.c:52:27: warning: unused variable 'word_mask' [-Wunused-const-variable] static const unsigned int word_mask = bytes_long - 1; ^ 1 warning generated. -- lib/string.c:901: warning: Function parameter or member 'h' not described in 'MERGE_UL' lib/string.c:901: warning: Function parameter or member 'l' not described in 'MERGE_UL' lib/string.c:901: warning: Function parameter or member 'd' not described in 'MERGE_UL' >> lib/string.c:901: warning: expecting prototype for memcpy(). Prototype was for MERGE_UL() instead vim +/word_mask +52 lib/string.c 50 51 static const unsigned int bytes_long = sizeof(long); > 52 static const unsigned int word_mask = bytes_long - 1; 53 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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