From: kernel test robot > Sent: 28 July 2023 22:43 > > kernel test robot noticed the following build warnings: > > [auto build test WARNING on akpm-mm/mm-everything] > [also build test WARNING on linus/master crng-random/master v6.5-rc3 next-20230728] > [cannot apply to next-20230728] > [If your patch is applied to the wrong git tree, kindly drop us a note. > And when submitting patch, we suggest to use '--base' as documented in > https://git-scm.com/docs/git-format-patch#_base_tree_information] > > url: https://github.com/intel-lab-lkp/linux/commits/David-Laight/minmax-Add-min_unsigned-a-b-and- > max_unsigned-a-b/20230728-225439 > base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything > patch link: https://lore.kernel.org/r/b4ce9dad748e489f9314a2dc95615033%40AcuMS.aculab.com > patch subject: [PATCH next v2 5/5] minmax: Relax check to allow comparison between int and small > unsigned constants. > config: alpha-randconfig-r024-20230727 (https://download.01.org/0day- > ci/archive/20230729/202307290538.EtRKfGgC-lkp@xxxxxxxxx/config) > compiler: alpha-linux-gcc (GCC) 12.3.0 > reproduce: (https://download.01.org/0day-ci/archive/20230729/202307290538.EtRKfGgC- > 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/202307290538.EtRKfGgC-lkp@xxxxxxxxx/ > > All warnings (new ones prefixed by >>): > > In file included from include/linux/kernel.h:27, > from include/linux/cpumask.h:10, > from include/linux/mm_types_task.h:14, > from include/linux/mm_types.h:5, > from include/linux/buildid.h:5, > from include/linux/module.h:14, > from net/ceph/osdmap.c:5: > net/ceph/osdmap.c: In function 'osdmap_decode': > >> include/linux/minmax.h:26:22: warning: ordered comparison of pointer with null pointer [-Wextra] > 26 | ((x) >= (typeof(x))0 && (x) <= (typeof((x) + 0))(long)__INT_MAX__)) I have a cunning plan to fix this (and warnings about testing 'unsigned >= 0'). Basically replace the first test with: __builtin_choose_expr(is_signed(x), x, 1) >= 0 (Also fixes the build with clang < 16.) Hopefully that v3 will keep the build robert happy :-) David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)
