On Thu, May 11, 2017 at 02:49:21PM +0200, Arnd Bergmann wrote:
> gcc-7 flags the use of integer math inside of a condition
> as a potential bug:
>
> fs/xfs/xfs_bmap_util.c: In function 'xfs_swap_extents_check_format':
> fs/xfs/xfs_bmap_util.c:1619:8: error: '<<' in boolean context, did you mean '<' ? [-Werror=int-in-bool-context]
> fs/xfs/xfs_bmap_util.c:1629:8: error: '<<' in boolean context, did you mean '<' ? [-Werror=int-in-bool-context]
>
> This one is clearly fine, and we can add a comparison to zero
> to shut up the warning.
>
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
> fs/xfs/xfs_bmap_util.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
> index 2b954308a1d6..cbd3ffe42f39 100644
> --- a/fs/xfs/xfs_bmap_util.c
> +++ b/fs/xfs/xfs_bmap_util.c
> @@ -1613,7 +1613,7 @@ xfs_swap_extents_check_format(
> * extent format...
> */
> if (tip->i_d.di_format == XFS_DINODE_FMT_BTREE) {
> - if (XFS_IFORK_BOFF(ip) &&
> + if ((XFS_IFORK_BOFF(ip) != 0) &&
Even if we were fine with fixing this odd warning the additional braces
are simply bogus.
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