Hi Demi, kernel test robot noticed the following build errors: [auto build test ERROR on lee-mfd/for-mfd-next] [also build test ERROR on lee-leds/for-leds-next linus/master v6.4-rc5 next-20230609] [cannot apply to xen-tip/linux-next lee-mfd/for-mfd-fixes] [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/Demi-Marie-Obenour/vsscanf-Return-ERANGE-on-integer-overflow/20230610-110026 base: https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next patch link: https://lore.kernel.org/r/20230610025759.1813-1-demi%40invisiblethingslab.com patch subject: [PATCH 1/4] Rip out simple_strtoll() config: arm-randconfig-r046-20230610 (https://download.01.org/0day-ci/archive/20230610/202306101334.lDZERsKo-lkp@xxxxxxxxx/config) compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a) reproduce (this is a W=1 build): mkdir -p ~/bin wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi git remote add lee-mfd https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git git fetch lee-mfd for-mfd-next git checkout lee-mfd/for-mfd-next b4 shazam https://lore.kernel.org/r/20230610025759.1813-1-demi@xxxxxxxxxxxxxxxxxxxxxx # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=arm olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/md/bcache/ 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/202306101334.lDZERsKo-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> drivers/md/bcache/util.c:82:1: error: call to undeclared function 'simple_strtoll'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] STRTO_H(strtoll, long long) ^ drivers/md/bcache/util.c:28:11: note: expanded from macro 'STRTO_H' type i = simple_ ## name(cp, &e, 10); \ ^ <scratch space>:22:1: note: expanded from here simple_strtoll ^ 1 error generated. vim +/simple_strtoll +82 drivers/md/bcache/util.c cafe563591446c Kent Overstreet 2013-03-23 79 cafe563591446c Kent Overstreet 2013-03-23 80 STRTO_H(strtoint, int) cafe563591446c Kent Overstreet 2013-03-23 81 STRTO_H(strtouint, unsigned int) cafe563591446c Kent Overstreet 2013-03-23 @82 STRTO_H(strtoll, long long) cafe563591446c Kent Overstreet 2013-03-23 83 STRTO_H(strtoull, unsigned long long) cafe563591446c Kent Overstreet 2013-03-23 84 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki