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    SubjectRe: [PATCH] printf: add support for printing symbolic error codes
    Hi Rasmus,

    Thank you for the patch! Yet something to improve:

    [auto build test ERROR on linus/master]
    [cannot apply to v5.3-rc6 next-20190830]
    [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

    url: https://github.com/0day-ci/linux/commits/Rasmus-Villemoes/printf-add-support-for-printing-symbolic-error-codes/20190831-162013
    config: x86_64-randconfig-b002-201934 (attached as .config)
    compiler: gcc-7 (Debian 7.4.0-11) 7.4.0
    reproduce:
    # save the attached .config to linux build tree
    make ARCH=x86_64

    If you fix the issue, kindly add following tag
    Reported-by: kbuild test robot <lkp@intel.com>

    All errors (new ones prefixed by >>):

    In file included from <command-line>:0:0:
    include/linux/errcode.h: In function 'errcode':
    >> include/linux/errcode.h:10:9: error: 'NULL' undeclared (first use in this function)
    return NULL;
    ^~~~
    include/linux/errcode.h:10:9: note: each undeclared identifier is reported only once for each function it appears in

    vim +/NULL +10 include/linux/errcode.h

    4
    5 #ifdef CONFIG_SYMBOLIC_ERRCODE
    6 const char *errcode(int code);
    7 #else
    8 static inline const char *errcode(int code)
    9 {
    > 10 return NULL;
    11 }
    12 #endif
    13

    ---
    0-DAY kernel test infrastructure Open Source Technology Center
    https://lists.01.org/pipermail/kbuild-all Intel Corporation
    [unhandled content-type:application/gzip]
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