Qu Wenruo <quwen...@cn.fujitsu.com> on Wed, 2014/06/04 14:48: > > -------- Original Message -------- > Subject: [PATCH 1/1] btrfs-progs: fix compiler warning > From: Christian Hesse <m...@eworm.de> > To: linux-btrfs@vger.kernel.org > Date: 2014年06月03日 19:29 > > gcc 4.9.0 gives a warning: array subscript is above array bounds > > > > Checking for "greater or equal" instead of just "equal" fixes this. > > > > Signed-off-by: Christian Hesse <m...@eworm.de> > > --- > > cmds-restore.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/cmds-restore.c b/cmds-restore.c > > index 96b97e1..534a49e 100644 > > --- a/cmds-restore.c > > +++ b/cmds-restore.c > > @@ -169,7 +169,7 @@ again: > > break; > > } > > > > - if (level == BTRFS_MAX_LEVEL) > > + if (level >= BTRFS_MAX_LEVEL) > > return 1; > > > > slot = path->slots[level] + 1; > > Also I faied to reproduce the bug. > Using gcc-4.9.0-3 from Archlinux core repo.
Exactly the same here. ;)
> It seems to be related to default gcc flags from distribution?
Probably. I did compile with optimization, so adding -O2 may do the trick:
make CFLAGS="${CFLAGS} -O2" all
--
Schoene Gruesse
Chris
O< ascii ribbon campaign
stop html mail - www.asciiribbon.org
signature.asc
Description: PGP signature
