[kbuild-all] arch/arm/boot/compressed/fdt_rw.c:439:38: sparse: sparse: dubious: x | !y

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: b791d1bdf9212d944d749a5c7ff6febdba241771 commit: d047cd8a2760f58d17b8ade21d2f15b818575abc scripts/dtc: Update to upstream version v1.6.0-2-g87a656ae5ff9 date: 3 months ago config: arm-randconfig-s032-20200612 (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.1-250-g42323db3-dirty git checkout d047cd8a2760f58d17b8ade21d2f15b818575abc # save the attached .config to linux build tree make W=1 C=1 ARCH=arm CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' 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 >>) --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org