From: Mingli Yu <mingli...@windriver.com> There comes below build failure when use gcc 10.1.0 and "-Og" passed to compiler. | /usr/lib/gcc/x86_64-wrs-linux/10.1.0/../../../../x86_64-wrs-linux/bin/ld.bfd: /mnt/build/tmp/work/x86_64-linux/qemu-system-native/5.1.0-r0/qemu-5.1.0/fsdev/qemu-fsdev-throttle.c:25: undefined reference to `unknown_lock_type' | /usr/lib/gcc/x86_64-wrs-linux/10.1.0/../../../../x86_64-wrs-linux/bin/ld.bfd: ../fsdev/qemu-fsdev-throttle.o: in function `fsdev_co_throttle_request': | /mnt/build/tmp/work/x86_64-linux/qemu-system-native/5.1.0-r0/qemu-5.1.0/fsdev/qemu-fsdev-throttle.c:103: undefined reference to `unknown_lock_type' | /usr/lib/gcc/x86_64-wrs-linux/10.1.0/../../../../x86_64-wrs-linux/bin/ld.bfd: ../fsdev/qemu-fsdev-throttle.o:/mnt/build/tmp/work/x86_64-linux/qemu-system-native/5.1.0-r0/qemu-5.1.0/fsdev/qemu-fsdev-throttle.c:103: more undefined references to `unknown_lock_type' follow | collect2: error: ld returned 1 exit status
So always define unknown_lock_type to fix the above error. Signed-off-by: Mingli Yu <mingli...@windriver.com> --- include/qemu/lockable.h | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/include/qemu/lockable.h b/include/qemu/lockable.h index b620023141..e792ed9a69 100644 --- a/include/qemu/lockable.h +++ b/include/qemu/lockable.h @@ -25,17 +25,12 @@ struct QemuLockable { }; /* This function gives an error if an invalid, non-NULL pointer type is passed - * to QEMU_MAKE_LOCKABLE. For optimized builds, we can rely on dead-code elimination - * from the compiler, and give the errors already at link time. + * to QEMU_MAKE_LOCKABLE. */ -#if defined(__OPTIMIZE__) && !defined(__SANITIZE_ADDRESS__) -void unknown_lock_type(void *); -#else static inline void unknown_lock_type(void *unused) { abort(); } -#endif static inline __attribute__((__always_inline__)) QemuLockable * qemu_make_lockable(void *x, QemuLockable *lockable) -- 2.26.2