Hi Daniel, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on 10b82d5176488acee2820e5a2cf0f2ec5c3488b6] url: https://github.com/0day-ci/linux/commits/Daniel-Latypov/kunit-introduce-c... base: 10b82d5176488acee2820e5a2cf0f2ec5c3488b6 config: i386-randconfig-s002-20200917 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-201-g24bdaac6-dirty # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) -- Please review and possibly fold the followup patch. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org