Hi Daniel, Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on 7cf726a59435301046250c42131554d9ccc566b8] url: https://github.com/0day-ci/linux/commits/Daniel-Latypov/lib-add-basic-KUnit-test-for-lib-math/20201020-064737 base: 7cf726a59435301046250c42131554d9ccc566b8 config: mips-randconfig-r032-20201030 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project fa5a13276764a2657b3571fa3c57b07ee5d2d661) 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 mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu # https://github.com/0day-ci/linux/commit/e268c8ae297dc311e5deb6b25daad9a2f88309ba git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Daniel-Latypov/lib-add-basic-KUnit-test-for-lib-math/20201020-064737 git checkout e268c8ae297dc311e5deb6b25daad9a2f88309ba # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> All warnings (new ones prefixed by >>): >> lib/math/math_test.c:137:13: warning: shift count >= width of type >> [-Wshift-count-overflow] .a = 1UL >> 32, ^ ~~ 1 warning generated. vim +137 lib/math/math_test.c 109 110 static void int_sqrt_test(struct kunit *test) 111 { 112 const char *message_fmt = "sqrt(%lu)"; 113 int i; 114 115 struct test_case test_cases[] = { 116 { 117 .a = 0, 118 .result = 0, 119 }, 120 { 121 .a = 1, 122 .result = 1, 123 }, 124 { 125 .a = 4, 126 .result = 2, 127 }, 128 { 129 .a = 5, 130 .result = 2, 131 }, 132 { 133 .a = 8, 134 .result = 2, 135 }, 136 { > 137 .a = 1UL >> 32, 138 .result = 1UL >> 16, 139 }, 140 }; 141 142 for (i = 0; i < ARRAY_SIZE(test_cases); ++i) { 143 KUNIT_EXPECT_EQ_MSG(test, int_sqrt(test_cases[i].a), 144 test_cases[i].result, message_fmt, 145 test_cases[i].a); 146 } 147 } 148 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
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