tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: d5538ab91d3a9a237805be6f8c6c272af2987995 commit: 7245fc5bb7a966852d5bd7779d1f5855530b461a [4356/7639] powerpc/math-emu: Remove -w build flag and fix warnings config: powerpc-randconfig-r026-20220918 (https://download.01.org/0day-ci/archive/20220918/202209181318.8gJoexZe-lkp@xxxxxxxxx/config) compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920) 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 powerpc cross compiling tool for clang build # apt-get install binutils-powerpc-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=7245fc5bb7a966852d5bd7779d1f5855530b461a git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 7245fc5bb7a966852d5bd7779d1f5855530b461a # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash arch/powerpc/math-emu/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> arch/powerpc/math-emu/fcmpu.c:14:2: warning: variable 'B_c' set but not used [-Wunused-but-set-variable] FP_DECL_D(B); ^ include/math-emu/double.h:73:23: note: expanded from macro 'FP_DECL_D' #define FP_DECL_D(X) _FP_DECL(2,X) ^ include/math-emu/op-common.h:28:14: note: expanded from macro '_FP_DECL' _FP_I_TYPE X##_c=0, X##_s=0, X##_e=0; \ ^ <scratch space>:126:1: note: expanded from here B_c ^ >> arch/powerpc/math-emu/fcmpu.c:15:2: warning: variable '_fex' set but not used [-Wunused-but-set-variable] FP_DECL_EX; ^ include/math-emu/soft-fp.h:94:24: note: expanded from macro 'FP_DECL_EX' #define FP_DECL_EX int _fex = 0 ^ >> arch/powerpc/math-emu/fcmpu.c:13:2: warning: variable 'A_c' set but not used [-Wunused-but-set-variable] FP_DECL_D(A); ^ include/math-emu/double.h:73:23: note: expanded from macro 'FP_DECL_D' #define FP_DECL_D(X) _FP_DECL(2,X) ^ include/math-emu/op-common.h:28:14: note: expanded from macro '_FP_DECL' _FP_I_TYPE X##_c=0, X##_s=0, X##_e=0; \ ^ <scratch space>:120:1: note: expanded from here A_c ^ arch/powerpc/math-emu/fcmpu.c:11:1: warning: no previous prototype for function 'fcmpu' [-Wmissing-prototypes] fcmpu(u32 *ccr, int crfD, void *frA, void *frB) ^ arch/powerpc/math-emu/fcmpu.c:10:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int ^ static 4 warnings generated. -- >> arch/powerpc/math-emu/fctiw.c:14:2: warning: variable '_fex' set but not used [-Wunused-but-set-variable] FP_DECL_EX; ^ include/math-emu/soft-fp.h:94:24: note: expanded from macro 'FP_DECL_EX' #define FP_DECL_EX int _fex = 0 ^ arch/powerpc/math-emu/fctiw.c:11:1: warning: no previous prototype for function 'fctiw' [-Wmissing-prototypes] fctiw(u32 *frD, void *frB) ^ arch/powerpc/math-emu/fctiw.c:10:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int ^ static 2 warnings generated. -- >> arch/powerpc/math-emu/fctiwz.c:14:2: warning: variable '_fex' set but not used [-Wunused-but-set-variable] FP_DECL_EX; ^ include/math-emu/soft-fp.h:94:24: note: expanded from macro 'FP_DECL_EX' #define FP_DECL_EX int _fex = 0 ^ arch/powerpc/math-emu/fctiwz.c:11:1: warning: no previous prototype for function 'fctiwz' [-Wmissing-prototypes] fctiwz(u32 *frD, void *frB) ^ arch/powerpc/math-emu/fctiwz.c:10:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int ^ static 2 warnings generated. -- >> arch/powerpc/math-emu/fsel.c:14:2: warning: variable '_fex' set but not used [-Wunused-but-set-variable] FP_DECL_EX; ^ include/math-emu/soft-fp.h:94:24: note: expanded from macro 'FP_DECL_EX' #define FP_DECL_EX int _fex = 0 ^ arch/powerpc/math-emu/fsel.c:11:1: warning: no previous prototype for function 'fsel' [-Wmissing-prototypes] fsel(u32 *frD, void *frA, u32 *frB, u32 *frC) ^ arch/powerpc/math-emu/fsel.c:10:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int ^ static 2 warnings generated. vim +/B_c +14 arch/powerpc/math-emu/fcmpu.c ^1da177e4c3f41 arch/ppc/math-emu/fcmpu.c Linus Torvalds 2005-04-16 9 ^1da177e4c3f41 arch/ppc/math-emu/fcmpu.c Linus Torvalds 2005-04-16 10 int ^1da177e4c3f41 arch/ppc/math-emu/fcmpu.c Linus Torvalds 2005-04-16 11 fcmpu(u32 *ccr, int crfD, void *frA, void *frB) ^1da177e4c3f41 arch/ppc/math-emu/fcmpu.c Linus Torvalds 2005-04-16 12 { ^1da177e4c3f41 arch/ppc/math-emu/fcmpu.c Linus Torvalds 2005-04-16 @13 FP_DECL_D(A); ^1da177e4c3f41 arch/ppc/math-emu/fcmpu.c Linus Torvalds 2005-04-16 @14 FP_DECL_D(B); d2b194ed820880 arch/powerpc/math-emu/fcmpu.c Kumar Gala 2008-06-04 @15 FP_DECL_EX; ^1da177e4c3f41 arch/ppc/math-emu/fcmpu.c Linus Torvalds 2005-04-16 16 int code[4] = { (1 << 3), (1 << 1), (1 << 2), (1 << 0) }; ^1da177e4c3f41 arch/ppc/math-emu/fcmpu.c Linus Torvalds 2005-04-16 17 long cmp; ^1da177e4c3f41 arch/ppc/math-emu/fcmpu.c Linus Torvalds 2005-04-16 18 :::::: The code at line 14 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://01.org/lkp
