On Wed, Aug 9, 2017 at 5:07 PM, kbuild test robot <fengguang.wu@xxxxxxxxx> wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: bfa738cf3dfae2111626650f86135f93c5ff0a22 > commit: 6974f0c4555e285ab217cee58b6e874f776ff409 include/linux/string.h: add the option of fortified string.h functions > date: 4 weeks ago > config: x86_64-randconfig-v0-08092220 (attached as .config) > compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7 > reproduce: > git checkout 6974f0c4555e285ab217cee58b6e874f776ff409 > # save the attached .config to linux build tree > make ARCH=x86_64 > > All warnings (new ones prefixed by >>): > > In file included from include/linux/bitmap.h:8, > from include/linux/cpumask.h:11, > from arch/x86/include/asm/cpumask.h:4, > from arch/x86/include/asm/msr.h:10, > from arch/x86/include/asm/processor.h:20, > from arch/x86/include/asm/cpufeature.h:4, > from arch/x86/include/asm/thread_info.h:52, > 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/seqlock.h:35, > from include/linux/time.h:5, > from include/linux/stat.h:18, > from include/linux/module.h:10, > from drivers/tty/serial/8250/8250_fintek.c:11: > include/linux/string.h: In function 'strcpy': > include/linux/string.h:209: warning: '______f' is static but declared in inline function 'strcpy' which is not static > include/linux/string.h:211: warning: '______f' is static but declared in inline function 'strcpy' which is not static This clearly comes from __trace_if() when CONFIG_PROFILE_ALL_BRANCHES is enabled. I did not see the warning with gcc-7.1.1, and I guess this only happens on older compilers like the gcc-4.4 that was used here. What is the reason for __FORTIFY_INLINE to be "extern __always_inline" rather than "static __always_inline"? If they cannot just be 'static', maybe this can be changed to depend on the compiler version. Arnd -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
