Re: [PATCH] XFS: Fix gcc 4.6 set but not read and unused statement warni

xfs

Re: [PATCH] XFS: Fix gcc 4.6 set but not read and unused statement warni

To:	Andi Kleen <ak@xxxxxxxxxxxxxxx>
Subject:	Re: [PATCH] XFS: Fix gcc 4.6 set but not read and unused statement warnings v2
From:	Christoph Hellwig <hch@xxxxxx>
Date:	Mon, 14 Jun 2010 14:48:04 +0200
Cc:	Christoph Hellwig <hch@xxxxxx>, Andi Kleen <andi@xxxxxxxxxxxxxx>, xfs@xxxxxxxxxxx, dgc@xxxxxxxxxxxxx
In-reply-to:	<4C15EF75.5080909@xxxxxxxxxxxxxxx>
References:	<20100614081356.GA27499@xxxxxxxxxxxxxxx> <20100614083021.GA29354@xxxxxx> <4C15EF75.5080909@xxxxxxxxxxxxxxx>
User-agent:	Mutt/1.3.28i

On Mon, Jun 14, 2010 at 10:59:33AM +0200, Andi Kleen wrote:
> >How can this work?  bp->data is a void pointer.
> 
> It compiled with CONFIG_XFS_DEBUG enabled. Do I need to set some other
> option to test this?

It fails for me in a normal CONFIG_XFS_DEBUG build:

fs/xfs/xfs_da_btree.c: In function 'xfs_da_root_join':
fs/xfs/xfs_da_btree.c:737: warning: dereferencing 'void *' pointer
fs/xfs/xfs_da_btree.c:737: error: request for member 'magic' in
something not a structure or union
fs/xfs/xfs_da_btree.c:737: warning: dereferencing 'void *' pointer

...

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[PATCH] XFS: Fix gcc 4.6 set but not read and unused statement warnings v2, Andi Kleen Re: [PATCH] XFS: Fix gcc 4.6 set but not read and unused statement warnings v2, Christoph Hellwig Re: [PATCH] XFS: Fix gcc 4.6 set but not read and unused statement warnings v2, Andi Kleen Re: [PATCH] XFS: Fix gcc 4.6 set but not read and unused statement warnings v2, Christoph Hellwig <= Re: [PATCH] XFS: Fix gcc 4.6 set but not read and unused statement warnings v2, Andi Kleen Re: [PATCH] XFS: Fix gcc 4.6 set but not read and unused statement warnings v2, Andi Kleen Re: [PATCH] XFS: Fix gcc 4.6 set but not read and unused statement warnings v2, Dave Chinner Re: [PATCH] XFS: Fix gcc 4.6 set but not read and unused statement warnings v2, Andi Kleen Re: [PATCH] XFS: Fix gcc 4.6 set but not read and unused statement warnings v2, Eric Sandeen Re: [PATCH] XFS: Fix gcc 4.6 set but not read and unused statement warnings v2, Andi Kleen

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