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Date:   Thu, 17 Mar 2022 19:15:38 +0800
From:   kernel test robot <lkp@...el.com>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [mingo-tip:master 1788/2335] lib/memcat_p.c:10:8: warning: no
 previous prototype for '__memcat_p'

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git master
head:   85293bf3fca6d85608cff1447ce3097583f15fab
commit: f4a35864aeccc248d3c2122bf0a8f2ba77ea8c2f [1788/2335] headers/deps: smp: Optimize <linux/smp.h> dependencies, remove <linux/smp_api.h> inclusion
config: i386-randconfig-a001-20220314 (https://download.01.org/0day-ci/archive/20220317/202203171924.u5fkdJOH-lkp@intel.com/config)
compiler: gcc-9 (Ubuntu 9.4.0-1ubuntu1~20.04) 9.4.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git/commit/?id=f4a35864aeccc248d3c2122bf0a8f2ba77ea8c2f
        git remote add mingo-tip git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git
        git fetch --no-tags mingo-tip master
        git checkout f4a35864aeccc248d3c2122bf0a8f2ba77ea8c2f
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> lib/memcat_p.c:10:8: warning: no previous prototype for '__memcat_p' [-Wmissing-prototypes]
      10 | void **__memcat_p(void **a, void **b)
         |        ^~~~~~~~~~


vim +/__memcat_p +10 lib/memcat_p.c

93048c0944150b Alexander Shishkin 2018-10-16   4  
93048c0944150b Alexander Shishkin 2018-10-16   5  /*
93048c0944150b Alexander Shishkin 2018-10-16   6   * Merge two NULL-terminated pointer arrays into a newly allocated
93048c0944150b Alexander Shishkin 2018-10-16   7   * array, which is also NULL-terminated. Nomenclature is inspired by
93048c0944150b Alexander Shishkin 2018-10-16   8   * memset_p() and memcat() found elsewhere in the kernel source tree.
93048c0944150b Alexander Shishkin 2018-10-16   9   */
93048c0944150b Alexander Shishkin 2018-10-16 @10  void **__memcat_p(void **a, void **b)

:::::: The code at line 10 was first introduced by commit
:::::: 93048c0944150b316a15f92c41a4d626c8df37fd lib: Fix ia64 bootloader linkage

:::::: TO: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
:::::: CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
0-DAY CI Kernel Test Service
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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