Build error for linux-headers-5.15.0 with gcc-11.4 for FORTIFY_INLINE strlcpy

[leeee-me]

With include/drv_conf.h

#if !defined(strlcpy) #define strlcpy(a, b, c) strscpy(a, b, c) #endif

This will bring building error like this (by Linux Kernel 5.15.0, GCC-11.4 at Ubuntu 22.04)

Currently, I manually removed the macro definition and it passed to build. Please help to verify and rewrite for these FORTIFY_INLINE functions' macro expansion by Linux Kernel.

make ARCH=x86_64 CROSS_COMPILE= -C /lib/modules/5.15.0-97-generic/build M=/home/me/rtl8852au modules make[1]: Entering directory '/usr/src/linux-headers-5.15.0-97-generic' CC [M] /home/me/rtl8852au/os_dep/osdep_service.o In file included from ./include/linux/bitmap.h:10, from ./include/linux/cpumask.h:12, from ./arch/x86/include/asm/cpumask.h:5, from ./arch/x86/include/asm/msr.h:11, from ./arch/x86/include/asm/processor.h:22, from ./arch/x86/include/asm/timex.h:5, from ./include/linux/timex.h:67, from ./include/linux/time32.h:13, from ./include/linux/time.h:60, from ./include/linux/stat.h:19, from ./include/linux/module.h:13, from /home/me/rtl8852au/include/basic_types.h:38, from /home/me/rtl8852au/include/drv_types.h:24, from /home/me/rtl8852au/os_dep/osdep_service.c:17: ./include/linux/string.h:32:9: error: conflicting types for ‘strscpy’; have ‘ssize_t(char *, const char *, size_t)’ {aka ‘long int(char *, const char *, long unsigned int)’} 32 | ssize_t strscpy(char *, const char *, size_t); | ^~~~~~~ In file included from /home/me/rtl8852au/include/drv_types.h:23, from /home/me/rtl8852au/os_dep/osdep_service.c:17: /home/me/rtl8852au/include/drv_conf.h:642:26: note: previous declaration of ‘strscpy’ with type ‘size_t(char *, const char *, size_t)’ {aka ‘long unsigned int(char *, const char *, long unsigned int)’} 642 | #define strlcpy(a, b, c) strscpy(a, b, c) | ^~~~~~~ ./include/linux/string.h:29:8: note: in expansion of macro ‘strlcpy’ 29 | size_t strlcpy(char *, const char *, size_t); | ^~~~~~~ In file included from ./include/linux/string.h:262, from ./include/linux/bitmap.h:10, from ./include/linux/cpumask.h:12, from ./arch/x86/include/asm/cpumask.h:5, from ./arch/x86/include/asm/msr.h:11, from ./arch/x86/include/asm/processor.h:22, from ./arch/x86/include/asm/timex.h:5, from ./include/linux/timex.h:67, from ./include/linux/time32.h:13, from ./include/linux/time.h:60, from ./include/linux/stat.h:19, from ./include/linux/module.h:13, from /home/me/rtl8852au/include/basic_types.h:38, from /home/me/rtl8852au/include/drv_types.h:24, from /home/me/rtl8852au/os_dep/osdep_service.c:17: ./include/linux/fortify-string.h:104:26: error: conflicting types for ‘strscpy’; have ‘ssize_t(char *, const char *, size_t)’ {aka ‘long int(char *, const char *, long unsigned int)’} 104 | __FORTIFY_INLINE ssize_t strscpy(char *p, const char *q, size_t size) | ^~~~~~~ In file included from /home/me/rtl8852au/include/drv_types.h:23, from /home/me/rtl8852au/os_dep/osdep_service.c:17: /home/me/rtl8852au/include/drv_conf.h:642:26: note: previous definition of ‘strscpy’ with type ‘size_t(char *, const char *, size_t)’ {aka ‘long unsigned int(char *, const char *, long unsigned int)’} 642 | #define strlcpy(a, b, c) strscpy(a, b, c) | ^~~~~~~ ./include/linux/fortify-string.h:80:25: note: in expansion of macro ‘strlcpy’ 80 | __FORTIFY_INLINE size_t strlcpy(char *p, const char *q, size_t size) | ^~~~~~~ make[2]: *** [scripts/Makefile.build:297: /home/me/rtl8852au/os_dep/osdep_service.o] Error 1 make[1]: *** [Makefile:1911: /home/me/rtl8852au] Error 2 make[1]: Leaving directory '/usr/src/linux-headers-5.15.0-97-generic' make: *** [Makefile:639: modules] Error 2