Hi Arnd, [auto build test ERROR on next-20170808] [also build test ERROR on v4.13-rc4] [cannot apply to linus/master kees/for-next/pstore arm-soc/for-next v4.13-rc4 v4.13-rc3 v4.13-rc2] [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/Arnd-Bergmann/string-h-work-around-__builtin_constant_p-quirk/20170809-073927 config: i386-randconfig-i1-08071909 (attached as .config) compiler: gcc-4.8 (Debian 4.8.4-1) 4.8.4 reproduce: # save the attached .config to linux build tree make ARCH=i386 All error/warnings (new ones prefixed by >>): In file included from arch/x86/include/asm/page_32.h:34:0, from arch/x86/include/asm/page.h:13, from arch/x86/include/asm/thread_info.h:11, from include/linux/thread_info.h:37, from arch/x86/include/asm/preempt.h:6, from include/linux/preempt.h:80, from include/linux/spinlock.h:50, from include/linux/mmzone.h:7, from include/linux/gfp.h:5, from include/linux/slab.h:14, from include/linux/crypto.h:24, from arch/x86/kernel/asm-offsets.c:8: include/linux/string.h: In function 'strncpy': >> include/linux/string.h:212:2: error: first argument to >> '__builtin_choose_expr' not a constant __builtin_choose_expr(__builtin_constant_p(arg), (arg), 0) ^ >> include/linux/string.h:217:21: note: in expansion of macro >> '__constant_argument' size_t constsize = __constant_argument(size); ^ include/linux/string.h: In function 'strlcpy': >> include/linux/string.h:212:2: error: first argument to >> '__builtin_choose_expr' not a constant __builtin_choose_expr(__builtin_constant_p(arg), (arg), 0) ^ include/linux/string.h:269:21: note: in expansion of macro '__constant_argument' size_t constlen = __constant_argument(len); ^ include/linux/string.h: In function 'memset': >> include/linux/string.h:212:2: error: first argument to >> '__builtin_choose_expr' not a constant __builtin_choose_expr(__builtin_constant_p(arg), (arg), 0) ^ include/linux/string.h:300:21: note: in expansion of macro '__constant_argument' size_t constsize = __constant_argument(size); ^ include/linux/string.h: In function 'memcpy': >> include/linux/string.h:212:2: error: first argument to >> '__builtin_choose_expr' not a constant __builtin_choose_expr(__builtin_constant_p(arg), (arg), 0) ^ include/linux/string.h:312:21: note: in expansion of macro '__constant_argument' size_t constsize = __constant_argument(size); ^ include/linux/string.h: In function 'memmove': >> include/linux/string.h:212:2: error: first argument to >> '__builtin_choose_expr' not a constant __builtin_choose_expr(__builtin_constant_p(arg), (arg), 0) ^ include/linux/string.h:326:21: note: in expansion of macro '__constant_argument' size_t constsize = __constant_argument(size); ^ include/linux/string.h: In function 'memscan': >> include/linux/string.h:212:2: error: first argument to >> '__builtin_choose_expr' not a constant __builtin_choose_expr(__builtin_constant_p(arg), (arg), 0) ^ include/linux/string.h:340:21: note: in expansion of macro '__constant_argument' size_t constsize = __constant_argument(size); ^ include/linux/string.h: In function 'memcmp': >> include/linux/string.h:212:2: error: first argument to >> '__builtin_choose_expr' not a constant __builtin_choose_expr(__builtin_constant_p(arg), (arg), 0) ^ include/linux/string.h:352:21: note: in expansion of macro '__constant_argument' size_t constsize = __constant_argument(size); ^ include/linux/string.h: In function 'memchr': >> include/linux/string.h:212:2: error: first argument to >> '__builtin_choose_expr' not a constant __builtin_choose_expr(__builtin_constant_p(arg), (arg), 0) ^ include/linux/string.h:365:21: note: in expansion of macro '__constant_argument' size_t constsize = __constant_argument(size); ^ include/linux/string.h: In function 'memchr_inv': >> include/linux/string.h:212:2: error: first argument to >> '__builtin_choose_expr' not a constant __builtin_choose_expr(__builtin_constant_p(arg), (arg), 0) ^ include/linux/string.h:377:21: note: in expansion of macro '__constant_argument' size_t constsize = __constant_argument(size); ^ include/linux/string.h: In function 'kmemdup': >> include/linux/string.h:212:2: error: first argument to >> '__builtin_choose_expr' not a constant __builtin_choose_expr(__builtin_constant_p(arg), (arg), 0) ^ include/linux/string.h:389:21: note: in expansion of macro '__constant_argument' size_t constsize = __constant_argument(size); ^ make[2]: *** [arch/x86/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [sub-make] Error 2 vim +/__builtin_choose_expr +212 include/linux/string.h 206 207 /* 208 * a more reliable check for constant arguments, see 209 * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72785 210 */ 211 #define __constant_argument(arg) \ > 212 __builtin_choose_expr(__builtin_constant_p(arg), (arg), 0) 213 214 __FORTIFY_INLINE char *strncpy(char *p, const char *q, __kernel_size_t size) 215 { 216 size_t p_size = __builtin_object_size(p, 0); > 217 size_t constsize = __constant_argument(size); 218 if (p_size < constsize) 219 __write_overflow(); 220 if (p_size < size) 221 fortify_overflow(__func__); 222 return __builtin_strncpy(p, q, size); 223 } 224 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
.config.gz
Description: application/gzip
