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Date:   Mon, 16 Jan 2023 23:17:24 +0800
From:   kernel test robot <lkp@...el.com>
To:     Peter Xu <peterx@...hat.com>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>
Subject: hugetlb-madvise.c:20: warning: "__USE_GNU" redefined

Hi Peter,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   5dc4c995db9eb45f6373a956eb1f69460e69e6d4
commit: 62f33fa228003a419a9484eed5133447a280387c selftests/vm: use memfd for hugetlb-madvise test
date:   10 weeks ago
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce:
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=62f33fa228003a419a9484eed5133447a280387c
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 62f33fa228003a419a9484eed5133447a280387c
        make O=/tmp/kselftest headers
        make O=/tmp/kselftest -C tools/testing/selftests

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

All warnings (new ones prefixed by >>):

>> hugetlb-madvise.c:20: warning: "__USE_GNU" redefined
      20 | #define __USE_GNU
         | 
   In file included from /usr/include/x86_64-linux-gnu/bits/libc-header-start.h:33,
                    from /usr/include/stdlib.h:26,
                    from hugetlb-madvise.c:16:
   /usr/include/features.h:407: note: this is the location of the previous definition
     407 | # define __USE_GNU      1
         | 

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests

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