Messages in this thread | | | Subject | Re: [PATCH] btrfs: fix size_t format string | From | Qu Wenruo <> | Date | Tue, 17 Jul 2018 22:33:07 +0800 |
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On 2018年07月17日 21:52, Arnd Bergmann wrote: > The newly added check_block_group_item() function causes a build warning > on 32-bit architectures: > > fs/btrfs/tree-checker.c: In function 'check_block_group_item': > fs/btrfs/tree-checker.c:404:41: error: format '%lu' expects argument of type 'long unsigned int', but argument 6 has type 'unsigned int' [-Werror=format=] > > The type of a sizeof() expression is size_t, which is correctly printed > using the %zu format string. > > Fixes: 9dc16aad5660 ("btrfs: tree-checker: Verify block_group_item")
My fault again. :(
Is there anyway to make gcc report such problem even under x86_64?
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Thanks, Qu
> --- > fs/btrfs/tree-checker.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/fs/btrfs/tree-checker.c b/fs/btrfs/tree-checker.c > index e9414c3f375e..4c82a628df85 100644 > --- a/fs/btrfs/tree-checker.c > +++ b/fs/btrfs/tree-checker.c > @@ -401,7 +401,7 @@ static int check_block_group_item(struct btrfs_fs_info *fs_info, > > if (item_size != sizeof(bgi)) { > block_group_err(fs_info, leaf, slot, > - "invalid item size, have %u expect %lu", > + "invalid item size, have %u expect %zu", > item_size, sizeof(bgi)); > return -EUCLEAN; > } >
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