tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 56585460cc2ec44fc5d66924f0a116f57080f0dc commit: 26030cb984dd65e0cb2d0c2489d94941cf8897b4 [10401/13390] extrawarn: move -Wrestrict into W=1 warnings config: um-randconfig-r034-20230830 (https://download.01.org/0day-ci/archive/20230830/202308301542.li3KHkJl-lkp@xxxxxxxxx/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230830/202308301542.li3KHkJl-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202308301542.li3KHkJl-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from include/linux/string.h:254, from include/linux/bitmap.h:11, from include/linux/cpumask.h:12, from include/linux/mm_types_task.h:14, from include/linux/mm_types.h:5, from include/linux/buildid.h:5, from include/linux/kallsyms.h:10, from kernel/kallsyms.c:15: kernel/kallsyms.c: In function '__sprint_symbol.isra.0': >> include/linux/fortify-string.h:65:29: warning: '__builtin_strcpy' source argument is the same as destination [-Wrestrict] 65 | #define __underlying_strcpy __builtin_strcpy | ^ include/linux/fortify-string.h:794:10: note: in expansion of macro '__underlying_strcpy' 794 | return __underlying_strcpy(p, q); | ^~~~~~~~~~~~~~~~~~~ vim +/__builtin_strcpy +65 include/linux/fortify-string.h 78a498c3a227f2 Alexander Potapenko 2022-10-24 61 78a498c3a227f2 Alexander Potapenko 2022-10-24 62 #define __underlying_memchr __builtin_memchr 78a498c3a227f2 Alexander Potapenko 2022-10-24 63 #define __underlying_memcmp __builtin_memcmp a28a6e860c6cf2 Francis Laniel 2021-02-25 64 #define __underlying_strcat __builtin_strcat a28a6e860c6cf2 Francis Laniel 2021-02-25 @65 #define __underlying_strcpy __builtin_strcpy a28a6e860c6cf2 Francis Laniel 2021-02-25 66 #define __underlying_strlen __builtin_strlen a28a6e860c6cf2 Francis Laniel 2021-02-25 67 #define __underlying_strncat __builtin_strncat a28a6e860c6cf2 Francis Laniel 2021-02-25 68 #define __underlying_strncpy __builtin_strncpy a28a6e860c6cf2 Francis Laniel 2021-02-25 69 #endif a28a6e860c6cf2 Francis Laniel 2021-02-25 70 :::::: The code at line 65 was first introduced by commit :::::: a28a6e860c6cf231cf3c5171c75c342adcd00406 string.h: move fortified functions definitions in a dedicated header. :::::: TO: Francis Laniel <laniel_francis@xxxxxxxxxxxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
