tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable head: 1b9f78ccbffefb107cd92e20cfccd03ff2fa9d0e commit: 1b9f78ccbffefb107cd92e20cfccd03ff2fa9d0e [52/52] lib/bch.c: use __builtin_parity() when available config: arm64-randconfig-002-20250131 (https://download.01.org/0day-ci/archive/20250131/202501312159.l6jNRaYy-lkp@xxxxxxxxx/config) compiler: aarch64-linux-gcc (GCC) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250131/202501312159.l6jNRaYy-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/202501312159.l6jNRaYy-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): aarch64-linux-ld: lib/bch.o: in function `parity': >> lib/bch.c:317:(.text+0x10e8): undefined reference to `__paritydi2' >> lib/bch.c:317:(.text+0x10e8): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `__paritydi2' vim +317 lib/bch.c 313 314 static inline int parity(unsigned int x) 315 { 316 #if __has_builtin(__builtin_parity) > 317 return __builtin_parity(x); 318 #else 319 /* 320 * public domain code snippet, lifted from 321 * http://www-graphics.stanford.edu/~seander/bithacks.html 322 */ 323 x ^= x >> 1; 324 x ^= x >> 2; 325 x = (x & 0x11111111U) * 0x11111111U; 326 return (x >> 28) & 1; 327 #endif 328 } 329 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
