From: kernel test robot <lkp@intel.com>
To: Bart Van Assche <bvanassche@acm.org>
Cc: oe-kbuild-all@lists.linux.dev
Subject: [bvanassche:thread-safety 211/445] arch/mips/include/uapi/asm/signal.h:16:32: error: missing binary operator before token '('
Date: Thu, 05 Nov 2026 11:00:30 +0800 [thread overview]
Message-ID: <202611051018.yn2aowTe-lkp@intel.com> (raw)
tree: https://github.com/bvanassche/linux thread-safety
head: d7fccb0c43af0d515fd23b885eb43ee9c38a6247
commit: 4edb32e9edb0de9a9e2b9c5fbe1aafd898744fa4 [211/445] signal: Use preprocessor conditionals in sigisemptyset() and sigequalsets()
config: mips-allmodconfig (https://download.01.org/0day-ci/archive/20261105/202611051018.yn2aowTe-lkp@intel.com/config)
compiler: mips-linux-gcc (GCC) 16.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261105/202611051018.yn2aowTe-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202611051018.yn2aowTe-lkp@intel.com/
All error/warnings (new ones prefixed by >>):
In file included from arch/mips/include/asm/signal.h:12,
from include/uapi/linux/signal.h:5,
from include/linux/signal_types.h:10,
from include/linux/sched.h:37,
from include/linux/rcupdate.h:27,
from include/linux/rbtree.h:24,
from include/linux/mm_types.h:11,
from include/linux/uio.h:9,
from include/linux/socket.h:8,
from include/linux/compat.h:15,
from arch/mips/kernel/asm-offsets.c:14:
include/linux/signal.h: In function 'sigisemptyset':
>> arch/mips/include/uapi/asm/signal.h:16:26: warning: 'sizeof' is not defined, evaluates to '0' [-Wundef]
16 | #define _NSIG_BPW (sizeof(unsigned long) * 8)
| ^~~~~~
arch/mips/include/uapi/asm/signal.h:17:34: note: in expansion of macro '_NSIG_BPW'
17 | #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
| ^~~~~~~~~
include/linux/signal.h:96:5: note: in expansion of macro '_NSIG_WORDS'
96 | #if _NSIG_WORDS == 4
| ^~~~~~~~~~~
>> arch/mips/include/uapi/asm/signal.h:16:32: error: missing binary operator before token '('
16 | #define _NSIG_BPW (sizeof(unsigned long) * 8)
| ^
arch/mips/include/uapi/asm/signal.h:17:34: note: in expansion of macro '_NSIG_BPW'
17 | #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
| ^~~~~~~~~
include/linux/signal.h:96:5: note: in expansion of macro '_NSIG_WORDS'
96 | #if _NSIG_WORDS == 4
| ^~~~~~~~~~~
>> arch/mips/include/uapi/asm/signal.h:16:26: warning: 'sizeof' is not defined, evaluates to '0' [-Wundef]
16 | #define _NSIG_BPW (sizeof(unsigned long) * 8)
| ^~~~~~
arch/mips/include/uapi/asm/signal.h:17:34: note: in expansion of macro '_NSIG_BPW'
17 | #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
| ^~~~~~~~~
include/linux/signal.h:98:7: note: in expansion of macro '_NSIG_WORDS'
98 | #elif _NSIG_WORDS == 2
| ^~~~~~~~~~~
>> arch/mips/include/uapi/asm/signal.h:16:32: error: missing binary operator before token '('
16 | #define _NSIG_BPW (sizeof(unsigned long) * 8)
| ^
arch/mips/include/uapi/asm/signal.h:17:34: note: in expansion of macro '_NSIG_BPW'
17 | #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
| ^~~~~~~~~
include/linux/signal.h:98:7: note: in expansion of macro '_NSIG_WORDS'
98 | #elif _NSIG_WORDS == 2
| ^~~~~~~~~~~
>> arch/mips/include/uapi/asm/signal.h:16:26: warning: 'sizeof' is not defined, evaluates to '0' [-Wundef]
16 | #define _NSIG_BPW (sizeof(unsigned long) * 8)
| ^~~~~~
arch/mips/include/uapi/asm/signal.h:17:34: note: in expansion of macro '_NSIG_BPW'
17 | #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
| ^~~~~~~~~
include/linux/signal.h:100:7: note: in expansion of macro '_NSIG_WORDS'
100 | #elif _NSIG_WORDS == 1
| ^~~~~~~~~~~
>> arch/mips/include/uapi/asm/signal.h:16:32: error: missing binary operator before token '('
16 | #define _NSIG_BPW (sizeof(unsigned long) * 8)
| ^
arch/mips/include/uapi/asm/signal.h:17:34: note: in expansion of macro '_NSIG_BPW'
17 | #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
| ^~~~~~~~~
include/linux/signal.h:100:7: note: in expansion of macro '_NSIG_WORDS'
100 | #elif _NSIG_WORDS == 1
| ^~~~~~~~~~~
include/linux/signal.h: In function 'sigequalsets':
>> arch/mips/include/uapi/asm/signal.h:16:26: warning: 'sizeof' is not defined, evaluates to '0' [-Wundef]
16 | #define _NSIG_BPW (sizeof(unsigned long) * 8)
| ^~~~~~
arch/mips/include/uapi/asm/signal.h:17:34: note: in expansion of macro '_NSIG_BPW'
17 | #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
| ^~~~~~~~~
include/linux/signal.h:110:5: note: in expansion of macro '_NSIG_WORDS'
110 | #if _NSIG_WORDS == 4
| ^~~~~~~~~~~
>> arch/mips/include/uapi/asm/signal.h:16:32: error: missing binary operator before token '('
16 | #define _NSIG_BPW (sizeof(unsigned long) * 8)
| ^
arch/mips/include/uapi/asm/signal.h:17:34: note: in expansion of macro '_NSIG_BPW'
17 | #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
| ^~~~~~~~~
include/linux/signal.h:110:5: note: in expansion of macro '_NSIG_WORDS'
110 | #if _NSIG_WORDS == 4
| ^~~~~~~~~~~
>> arch/mips/include/uapi/asm/signal.h:16:26: warning: 'sizeof' is not defined, evaluates to '0' [-Wundef]
16 | #define _NSIG_BPW (sizeof(unsigned long) * 8)
| ^~~~~~
arch/mips/include/uapi/asm/signal.h:17:34: note: in expansion of macro '_NSIG_BPW'
17 | #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
| ^~~~~~~~~
include/linux/signal.h:115:7: note: in expansion of macro '_NSIG_WORDS'
115 | #elif _NSIG_WORDS == 2
| ^~~~~~~~~~~
>> arch/mips/include/uapi/asm/signal.h:16:32: error: missing binary operator before token '('
16 | #define _NSIG_BPW (sizeof(unsigned long) * 8)
| ^
arch/mips/include/uapi/asm/signal.h:17:34: note: in expansion of macro '_NSIG_BPW'
17 | #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
| ^~~~~~~~~
include/linux/signal.h:115:7: note: in expansion of macro '_NSIG_WORDS'
115 | #elif _NSIG_WORDS == 2
| ^~~~~~~~~~~
>> arch/mips/include/uapi/asm/signal.h:16:26: warning: 'sizeof' is not defined, evaluates to '0' [-Wundef]
16 | #define _NSIG_BPW (sizeof(unsigned long) * 8)
| ^~~~~~
arch/mips/include/uapi/asm/signal.h:17:34: note: in expansion of macro '_NSIG_BPW'
17 | #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
| ^~~~~~~~~
include/linux/signal.h:118:7: note: in expansion of macro '_NSIG_WORDS'
118 | #elif _NSIG_WORDS == 1
| ^~~~~~~~~~~
>> arch/mips/include/uapi/asm/signal.h:16:32: error: missing binary operator before token '('
16 | #define _NSIG_BPW (sizeof(unsigned long) * 8)
| ^
arch/mips/include/uapi/asm/signal.h:17:34: note: in expansion of macro '_NSIG_BPW'
17 | #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
| ^~~~~~~~~
include/linux/signal.h:118:7: note: in expansion of macro '_NSIG_WORDS'
118 | #elif _NSIG_WORDS == 1
| ^~~~~~~~~~~
make[3]: *** [scripts/Makefile.build:185: arch/mips/kernel/asm-offsets.s] Error 1
make[3]: Target 'prepare' not remade because of errors.
make[2]: *** [Makefile:1417: prepare0] Error 2
make[2]: Target 'prepare' not remade because of errors.
make[1]: *** [Makefile:248: __sub-make] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:248: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.
vim +16 arch/mips/include/uapi/asm/signal.h
61730c538f8281e David Howells 2012-10-09 14
61730c538f8281e David Howells 2012-10-09 15 #define _NSIG 128
61730c538f8281e David Howells 2012-10-09 @16 #define _NSIG_BPW (sizeof(unsigned long) * 8)
61730c538f8281e David Howells 2012-10-09 17 #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
61730c538f8281e David Howells 2012-10-09 18
:::::: The code at line 16 was first introduced by commit
:::::: 61730c538f8281efa7ac12596da9f3f9a31b9272 UAPI: (Scripted) Disintegrate arch/mips/include/asm
:::::: TO: David Howells <dhowells@redhat.com>
:::::: CC: David Howells <dhowells@redhat.com>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-11-05 3:00 UTC|newest]
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