The __builtin_clz is for unsigned int, while it is applied to unsigned long. This fixes it by using __builtin_clzl.
Signed-off-by: Hongzhen Luo <hongz...@linux.alibaba.com> --- include/erofs/defs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/erofs/defs.h b/include/erofs/defs.h index e0798c8..310a6ab 100644 --- a/include/erofs/defs.h +++ b/include/erofs/defs.h @@ -288,7 +288,7 @@ static inline u32 get_unaligned_le64(const void *p) static inline unsigned int fls_long(unsigned long x) { - return x ? sizeof(x) * 8 - __builtin_clz(x) : 0; + return x ? sizeof(x) * 8 - __builtin_clzl(x) : 0; } static inline unsigned long lowbit(unsigned long n) -- 2.43.5