From 8ee834680d39677a60e26a0de4ece2f0c1ebbde2 Mon Sep 17 00:00:00 2001 From: Ron Date: Sat, 27 Jun 2009 04:44:27 +0930 Subject: Avoid warnings about shifting more bits than we have The test here is a constant expression and will compile out. For platforms that don't need the shift the code gets slightly smaller and simpler, for those that do the result is unchanged. Signed-off-by: Ron Lee Signed-off-by: Mike Frysinger --- libc/sysdeps/linux/arm/posix_fadvise.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'libc/sysdeps/linux/arm/posix_fadvise.c') diff --git a/libc/sysdeps/linux/arm/posix_fadvise.c b/libc/sysdeps/linux/arm/posix_fadvise.c index b23eb3d6b..278bff981 100644 --- a/libc/sysdeps/linux/arm/posix_fadvise.c +++ b/libc/sysdeps/linux/arm/posix_fadvise.c @@ -12,6 +12,8 @@ #if defined __NR_arm_fadvise64_64 +#define HIGH_BITS(x) (sizeof(x) > 4 ? (x) >> 32 : 0) + /* Was named __libc_posix_fadvise for some inexplicable reason. ** google says only uclibc has *__libc*_posix_fadviseXXX, ** so it cannot be compat with anything. @@ -27,8 +29,8 @@ int posix_fadvise(int fd, off_t offset, off_t len, int advise) { INTERNAL_SYSCALL_DECL (err); int ret = INTERNAL_SYSCALL (arm_fadvise64_64, err, 6, fd, advise, - __LONG_LONG_PAIR ((long)(offset >> 32), (long)offset), - __LONG_LONG_PAIR ((long)(len >> 32), (long)len)); + __LONG_LONG_PAIR (HIGH_BITS(offset), (long)offset), + __LONG_LONG_PAIR (HIGH_BITS(len), (long)len)); if (INTERNAL_SYSCALL_ERROR_P (ret, err)) return INTERNAL_SYSCALL_ERRNO (ret, err); -- cgit v1.2.3