Hi Jason,

[auto build test ERROR on linus/master]
[also build test ERROR on v4.9 next-20161215]
[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/Jason-A-Donenfeld/siphash-add-cryptographically-secure-PRF/20161216-092837
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 6.2.0
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
        # save the attached .config to linux build tree
        make.cross ARCH=ia64 

All errors (new ones prefixed by >>):

   lib/siphash.c: In function 'siphash_unaligned':
>> lib/siphash.c:123:15: error: 'bytes' undeclared (first use in this function)
     case 1: b |= bytes[0];
                  ^~~~~
   lib/siphash.c:123:15: note: each undeclared identifier is reported only once for each function it appears in

vim +/bytes +123 lib/siphash.c

   117		case 7: b |= ((u64)end[6]) << 48;
   118		case 6: b |= ((u64)end[5]) << 40;
   119		case 5: b |= ((u64)end[4]) << 32;
   120		case 4: b |= get_unaligned_le32(end); break;
   121		case 3: b |= ((u64)end[2]) << 16;
   122		case 2: b |= get_unaligned_le16(end); break;
 > 123		case 1: b |= bytes[0];
   124		}
   125	#endif
   126		v3 ^= b;

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