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From: kbuild test robot <lkp@intel.com>
To: Nathan Huckleberry <nhuck@google.com>
Cc: kbuild-all@01.org, yamada.masahiro@socionext.com,
	michal.lkml@markovi.net, linux-kbuild@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	clang-built-linux@googlegroups.com,
	Nathan Huckleberry <nhuck@google.com>
Subject: Re: [PATCH] kbuild: Change fallthrough comments to attributes
Date: Fri, 16 Aug 2019 05:07:53 +0800	[thread overview]
Message-ID: <201908160441.yqLFvkeg%lkp@intel.com> (raw)
In-Reply-To: <20190812214711.83710-1-nhuck@google.com>

[-- Attachment #1: Type: text/plain, Size: 21886 bytes --]

Hi Nathan,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[cannot apply to v5.3-rc4 next-20190814]
[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/Nathan-Huckleberry/kbuild-Change-fallthrough-comments-to-attributes/20190813-123202
config: x86_64-randconfig-a004-201932 (attached as .config)
compiler: gcc-6 (Debian 6.3.0-18+deb9u1) 6.3.0 20170516
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 warnings (new ones prefixed by >>):

   In file included from include/linux/sched/signal.h:6:0,
                    from fs//notify/fanotify/fanotify.c:11:
   include/linux/signal.h: In function 'sigorsets':
   include/linux/signal.h:147:1: warning: empty declaration
    _SIG_SET_BINOP(sigorsets, _sig_or)
    ^~~~~~~~~~~~~~
>> include/linux/signal.h:132:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:147:1: note: in expansion of macro '_SIG_SET_BINOP'
    _SIG_SET_BINOP(sigorsets, _sig_or)
    ^~~~~~~~~~~~~~
   include/linux/signal.h:147:1: warning: empty declaration
   include/linux/signal.h:136:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:147:1: note: in expansion of macro '_SIG_SET_BINOP'
    _SIG_SET_BINOP(sigorsets, _sig_or)
    ^~~~~~~~~~~~~~
   include/linux/signal.h: In function 'sigandsets':
   include/linux/signal.h:150:1: warning: empty declaration
    _SIG_SET_BINOP(sigandsets, _sig_and)
    ^~~~~~~~~~~~~~
>> include/linux/signal.h:132:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:150:1: note: in expansion of macro '_SIG_SET_BINOP'
    _SIG_SET_BINOP(sigandsets, _sig_and)
    ^~~~~~~~~~~~~~
   include/linux/signal.h:150:1: warning: empty declaration
   include/linux/signal.h:136:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:150:1: note: in expansion of macro '_SIG_SET_BINOP'
    _SIG_SET_BINOP(sigandsets, _sig_and)
    ^~~~~~~~~~~~~~
   include/linux/signal.h: In function 'sigandnsets':
   include/linux/signal.h:153:1: warning: empty declaration
    _SIG_SET_BINOP(sigandnsets, _sig_andn)
    ^~~~~~~~~~~~~~
>> include/linux/signal.h:132:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:153:1: note: in expansion of macro '_SIG_SET_BINOP'
    _SIG_SET_BINOP(sigandnsets, _sig_andn)
    ^~~~~~~~~~~~~~
   include/linux/signal.h:153:1: warning: empty declaration
   include/linux/signal.h:136:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:153:1: note: in expansion of macro '_SIG_SET_BINOP'
    _SIG_SET_BINOP(sigandnsets, _sig_andn)
    ^~~~~~~~~~~~~~
   include/linux/signal.h: In function 'signotset':
   include/linux/signal.h:177:1: warning: empty declaration
    _SIG_SET_OP(signotset, _sig_not)
    ^~~~~~~~~~~
   include/linux/signal.h:166:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:177:1: note: in expansion of macro '_SIG_SET_OP'
    _SIG_SET_OP(signotset, _sig_not)
    ^~~~~~~~~~~
   include/linux/signal.h:177:1: warning: empty declaration
   include/linux/signal.h:168:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:177:1: note: in expansion of macro '_SIG_SET_OP'
    _SIG_SET_OP(signotset, _sig_not)
    ^~~~~~~~~~~
   include/linux/signal.h: In function 'sigemptyset':
   include/linux/signal.h:189:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/signal.h:189:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/signal.h: In function 'sigfillset':
   include/linux/signal.h:202:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/signal.h:202:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/signal.h: In function 'siginitset':
   include/linux/signal.h:233:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/signal.h:233:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/signal.h: In function 'siginitsetinv':
   include/linux/signal.h:246:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/signal.h:246:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   In file included from include/linux/pid_namespace.h:7:0,
                    from include/linux/ptrace.h:10,
                    from include/linux/audit.h:13,
                    from fs//notify/fanotify/fanotify.c:14:
   include/linux/mm.h: In function '__mm_zero_struct_page':
   include/linux/mm.h:162:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
>> include/linux/mm.h:162:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/mm.h:165:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/mm.h:165:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/mm.h:168:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/mm.h:168:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
--
   In file included from include/linux/security.h:32:0,
                    from fs//notify/fanotify/fanotify_user.c:12:
   include/linux/mm.h: In function '__mm_zero_struct_page':
   include/linux/mm.h:162:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
>> include/linux/mm.h:162:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/mm.h:165:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/mm.h:165:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/mm.h:168:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/mm.h:168:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   In file included from include/linux/syscalls.h:76:0,
                    from fs//notify/fanotify/fanotify_user.c:13:
   include/linux/signal.h: In function 'sigorsets':
   include/linux/signal.h:147:1: warning: empty declaration
    _SIG_SET_BINOP(sigorsets, _sig_or)
    ^~~~~~~~~~~~~~
>> include/linux/signal.h:132:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:147:1: note: in expansion of macro '_SIG_SET_BINOP'
    _SIG_SET_BINOP(sigorsets, _sig_or)
    ^~~~~~~~~~~~~~
   include/linux/signal.h:147:1: warning: empty declaration
   include/linux/signal.h:136:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:147:1: note: in expansion of macro '_SIG_SET_BINOP'
    _SIG_SET_BINOP(sigorsets, _sig_or)
    ^~~~~~~~~~~~~~
   include/linux/signal.h: In function 'sigandsets':
   include/linux/signal.h:150:1: warning: empty declaration
    _SIG_SET_BINOP(sigandsets, _sig_and)
    ^~~~~~~~~~~~~~
>> include/linux/signal.h:132:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:150:1: note: in expansion of macro '_SIG_SET_BINOP'
    _SIG_SET_BINOP(sigandsets, _sig_and)
    ^~~~~~~~~~~~~~
   include/linux/signal.h:150:1: warning: empty declaration
   include/linux/signal.h:136:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:150:1: note: in expansion of macro '_SIG_SET_BINOP'
    _SIG_SET_BINOP(sigandsets, _sig_and)
    ^~~~~~~~~~~~~~
   include/linux/signal.h: In function 'sigandnsets':
   include/linux/signal.h:153:1: warning: empty declaration
    _SIG_SET_BINOP(sigandnsets, _sig_andn)
    ^~~~~~~~~~~~~~
>> include/linux/signal.h:132:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:153:1: note: in expansion of macro '_SIG_SET_BINOP'
    _SIG_SET_BINOP(sigandnsets, _sig_andn)
    ^~~~~~~~~~~~~~
   include/linux/signal.h:153:1: warning: empty declaration
   include/linux/signal.h:136:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:153:1: note: in expansion of macro '_SIG_SET_BINOP'
    _SIG_SET_BINOP(sigandnsets, _sig_andn)
    ^~~~~~~~~~~~~~
   include/linux/signal.h: In function 'signotset':
   include/linux/signal.h:177:1: warning: empty declaration
    _SIG_SET_OP(signotset, _sig_not)
    ^~~~~~~~~~~
   include/linux/signal.h:166:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:177:1: note: in expansion of macro '_SIG_SET_OP'
    _SIG_SET_OP(signotset, _sig_not)
    ^~~~~~~~~~~
   include/linux/signal.h:177:1: warning: empty declaration
   include/linux/signal.h:168:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:177:1: note: in expansion of macro '_SIG_SET_OP'
    _SIG_SET_OP(signotset, _sig_not)
    ^~~~~~~~~~~
   include/linux/signal.h: In function 'sigemptyset':
   include/linux/signal.h:189:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/signal.h:189:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/signal.h: In function 'sigfillset':
   include/linux/signal.h:202:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/signal.h:202:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/signal.h: In function 'siginitset':
   include/linux/signal.h:233:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/signal.h:233:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/signal.h: In function 'siginitsetinv':
   include/linux/signal.h:246:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/signal.h:246:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
--
   In file included from fs//xfs/kmem.h:11:0,
                    from fs//xfs/xfs_linux.h:24,
                    from fs//xfs/xfs.h:22,
                    from fs//xfs/xfs_trace.c:6:
   include/linux/mm.h: In function '__mm_zero_struct_page':
   include/linux/mm.h:162:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
>> include/linux/mm.h:162:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/mm.h:165:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/mm.h:165:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/mm.h:168:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/mm.h:168:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   In file included from include/linux/sched/signal.h:6:0,
                    from fs//xfs/xfs_linux.h:39,
                    from fs//xfs/xfs.h:22,
                    from fs//xfs/xfs_trace.c:6:
   include/linux/signal.h: In function 'sigorsets':
   include/linux/signal.h:147:1: warning: empty declaration
    _SIG_SET_BINOP(sigorsets, _sig_or)
    ^~~~~~~~~~~~~~
>> include/linux/signal.h:132:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:147:1: note: in expansion of macro '_SIG_SET_BINOP'
    _SIG_SET_BINOP(sigorsets, _sig_or)
    ^~~~~~~~~~~~~~
   include/linux/signal.h:147:1: warning: empty declaration
   include/linux/signal.h:136:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:147:1: note: in expansion of macro '_SIG_SET_BINOP'
    _SIG_SET_BINOP(sigorsets, _sig_or)
    ^~~~~~~~~~~~~~
   include/linux/signal.h: In function 'sigandsets':
   include/linux/signal.h:150:1: warning: empty declaration
    _SIG_SET_BINOP(sigandsets, _sig_and)
    ^~~~~~~~~~~~~~
>> include/linux/signal.h:132:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:150:1: note: in expansion of macro '_SIG_SET_BINOP'
    _SIG_SET_BINOP(sigandsets, _sig_and)
    ^~~~~~~~~~~~~~
   include/linux/signal.h:150:1: warning: empty declaration
   include/linux/signal.h:136:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:150:1: note: in expansion of macro '_SIG_SET_BINOP'
    _SIG_SET_BINOP(sigandsets, _sig_and)
    ^~~~~~~~~~~~~~
   include/linux/signal.h: In function 'sigandnsets':
   include/linux/signal.h:153:1: warning: empty declaration
    _SIG_SET_BINOP(sigandnsets, _sig_andn)
    ^~~~~~~~~~~~~~
>> include/linux/signal.h:132:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:153:1: note: in expansion of macro '_SIG_SET_BINOP'
    _SIG_SET_BINOP(sigandnsets, _sig_andn)
    ^~~~~~~~~~~~~~
   include/linux/signal.h:153:1: warning: empty declaration
   include/linux/signal.h:136:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:153:1: note: in expansion of macro '_SIG_SET_BINOP'
    _SIG_SET_BINOP(sigandnsets, _sig_andn)
    ^~~~~~~~~~~~~~
   include/linux/signal.h: In function 'signotset':
   include/linux/signal.h:177:1: warning: empty declaration
    _SIG_SET_OP(signotset, _sig_not)
    ^~~~~~~~~~~
   include/linux/signal.h:166:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:177:1: note: in expansion of macro '_SIG_SET_OP'
    _SIG_SET_OP(signotset, _sig_not)
    ^~~~~~~~~~~
   include/linux/signal.h:177:1: warning: empty declaration
   include/linux/signal.h:168:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      __attribute__((fallthrough));    \
      ^
   include/linux/signal.h:177:1: note: in expansion of macro '_SIG_SET_OP'
    _SIG_SET_OP(signotset, _sig_not)
    ^~~~~~~~~~~
   include/linux/signal.h: In function 'sigemptyset':
   include/linux/signal.h:189:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/signal.h:189:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/signal.h: In function 'sigfillset':
   include/linux/signal.h:202:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/signal.h:202:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/signal.h: In function 'siginitset':
   include/linux/signal.h:233:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/signal.h:233:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/signal.h: In function 'siginitsetinv':
   include/linux/signal.h:246:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/signal.h:246:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   In file included from include/linux/rhashtable.h:23:0,
                    from fs//xfs/xfs_linux.h:62,
                    from fs//xfs/xfs.h:22,
                    from fs//xfs/xfs_trace.c:6:
   include/linux/jhash.h: In function 'jhash':
>> include/linux/jhash.h:91:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
>> include/linux/jhash.h:91:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/jhash.h:94:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/jhash.h:94:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/jhash.h:97:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/jhash.h:97:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/jhash.h:100:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/jhash.h:100:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/jhash.h:103:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/jhash.h:103:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/jhash.h:106:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/jhash.h:106:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/jhash.h:109:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/jhash.h:109:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/jhash.h:112:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/jhash.h:112:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/jhash.h:115:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/jhash.h:115:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/jhash.h:118:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/jhash.h:118:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/jhash.h:121:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/jhash.h:121:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/jhash.h: In function 'jhash2':
   include/linux/jhash.h:161:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/jhash.h:161:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   include/linux/jhash.h:164:3: warning: empty declaration
      __attribute__((fallthrough));
      ^~~~~~~~~~~~~
   include/linux/jhash.h:164:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
..

vim +132 include/linux/signal.h

   120	
   121	#define _SIG_SET_BINOP(name, op)					\
   122	static inline void name(sigset_t *r, const sigset_t *a, const sigset_t *b) \
   123	{									\
   124		unsigned long a0, a1, a2, a3, b0, b1, b2, b3;			\
   125										\
   126		switch (_NSIG_WORDS) {						\
   127		case 4:								\
   128			a3 = a->sig[3]; a2 = a->sig[2];				\
   129			b3 = b->sig[3]; b2 = b->sig[2];				\
   130			r->sig[3] = op(a3, b3);					\
   131			r->sig[2] = op(a2, b2);					\
 > 132			__attribute__((fallthrough));				\
   133		case 2:								\
   134			a1 = a->sig[1]; b1 = b->sig[1];				\
   135			r->sig[1] = op(a1, b1);					\
   136			__attribute__((fallthrough));				\
   137		case 1:								\
   138			a0 = a->sig[0]; b0 = b->sig[0];				\
   139			r->sig[0] = op(a0, b0);					\
   140			break;							\
   141		default:							\
   142			BUILD_BUG();						\
   143		}								\
   144	}
   145	
   146	#define _sig_or(x,y)	((x) | (y))
 > 147	_SIG_SET_BINOP(sigorsets, _sig_or)
   148	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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      parent reply	other threads:[~2019-08-15 21:08 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-12 21:47 [PATCH] kbuild: Change fallthrough comments to attributes Nathan Huckleberry
2019-08-12 22:14 ` [PATCH v2] " Nathan Huckleberry
2019-08-12 22:40   ` Joe Perches
2019-08-12 23:11     ` Nick Desaulniers
2019-08-12 23:23       ` Joe Perches
2019-08-13  6:33       ` Nathan Chancellor
2019-08-13  7:04         ` Joe Perches
2019-08-13  7:43           ` Joe Perches
2019-08-13  9:48           ` David Laight
2019-08-12 23:06 ` [PATCH] " Nick Desaulniers
2019-08-13  7:15 ` Christoph Hellwig
2019-08-15 21:07 ` kbuild test robot [this message]

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