linux-kernel - [tip:WIP.sched/core 74/154] arch/arm/nwfpe/fpmodule.c:54:21: error: implicit declaration of function 'send

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Message-ID: <201702120958.0896us0u%fengguang.wu@intel.com>
Date:   Sun, 12 Feb 2017 09:54:12 +0800
From:   kbuild test robot <fengguang.wu@...el.com>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org, tipbuild@...or.com
Subject: [tip:WIP.sched/core 74/154] arch/arm/nwfpe/fpmodule.c:54:21: error:
 implicit declaration of function 'send_sig'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.sched/core
head:   12372f63e2728a509817b56878cd6633d92053b3
commit: 3cff44a935eba893a68a1bcb3ee7e90cbbbabbb7 [74/154] sched/headers: Move task_struct::signal and task_struct::sighand types and accessors into <linux/sched/signal.h>
config: arm-h3600_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 3cff44a935eba893a68a1bcb3ee7e90cbbbabbb7
        # save the attached .config to linux build tree
        make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/nwfpe/fpmodule.c: In function 'float_raise':
>> arch/arm/nwfpe/fpmodule.c:54:21: error: implicit declaration of function 'send_sig' [-Werror=implicit-function-declaration]
    #define fp_send_sig send_sig
                        ^
   arch/arm/nwfpe/fpmodule.c:178:3: note: in expansion of macro 'fp_send_sig'
      fp_send_sig(SIGFPE, current, 1);
      ^~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/send_sig +54 arch/arm/nwfpe/fpmodule.c

^1da177e Linus Torvalds 2005-04-16  48  #define NWFPE_BITS "double"
^1da177e Linus Torvalds 2005-04-16  49  #endif
^1da177e Linus Torvalds 2005-04-16  50  
^1da177e Linus Torvalds 2005-04-16  51  #ifdef MODULE
^1da177e Linus Torvalds 2005-04-16  52  void fp_send_sig(unsigned long sig, struct task_struct *p, int priv);
^1da177e Linus Torvalds 2005-04-16  53  #else
^1da177e Linus Torvalds 2005-04-16 @54  #define fp_send_sig	send_sig
^1da177e Linus Torvalds 2005-04-16  55  #define kern_fp_enter	fp_enter
^1da177e Linus Torvalds 2005-04-16  56  
^1da177e Linus Torvalds 2005-04-16  57  extern char fpe_type[];

:::::: The code at line 54 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>

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