[norov:fns2 3/8] lib/test_bitops.c:56:39: error: variable 'tmp' set but not used

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/norov/linux fns2
head:   f92306cbaa708996e4cabe1c802e4d71e2e0ad77
commit: 4bb80c67057ee84c93316be9f688e969a1a6ad63 [3/8] lib/test_bitops: Add benchmark test for fns()
config: riscv-allmodconfig (https://download.01.org/0day-ci/archive/20240506/202405061900.4HgQJjvK-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 37ae4ad0eef338776c7e2cffb3896153d43dcd90)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240506/202405061900.4HgQJjvK-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202405061900.4HgQJjvK-lkp@intel.com/

All errors (new ones prefixed by >>):

>> lib/test_bitops.c:56:39: error: variable 'tmp' set but not used [-Werror,-Wunused-but-set-variable]
      56 |         static volatile __used unsigned long tmp __initdata;
         |                                              ^
   1 error generated.


vim +/tmp +56 lib/test_bitops.c

    52	
    53	static int __init test_fns(void)
    54	{
    55		static unsigned long buf[10000] __initdata;
  > 56		static volatile __used unsigned long tmp __initdata;
    57		unsigned int i, n;
    58		ktime_t time;
    59	
    60		get_random_bytes(buf, sizeof(buf));
    61		time = ktime_get();
    62	
    63		for (n = 0; n < BITS_PER_LONG; n++)
    64			for (i = 0; i < 10000; i++)
    65				tmp = fns(buf[i], n);
    66	
    67		time = ktime_get() - time;
    68		pr_err("fns:  %18llu ns\n", time);
    69	
    70		return 0;
    71	}
    72	

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