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From: Johannes Schindelin <Johannes.Schindelin@gmx.de>
To: Junio C Hamano <gitster@pobox.com>
Cc: git@vger.kernel.org
Subject: Re: [PATCH 2/2] Actually use retval
Date: Tue, 22 Mar 2011 19:20:14 +0100 (CET)	[thread overview]
Message-ID: <alpine.DEB.1.00.1103221918540.1561@bonsai2> (raw)
In-Reply-To: <7v7hbrkovz.fsf@alter.siamese.dyndns.org>

Hi,

On Tue, 22 Mar 2011, Junio C Hamano wrote:

> Johannes Schindelin <johannes.schindelin@gmx.de> writes:
> 
> > This is most likely a bug. Nocited by gcc 4.6.0.
> 
> While I don't doubt gcc 4.6.0 found the retval assigned is not used, I 
> think you misunderstood the value returned from this function.

Nope. I did not misunderstand. I did not understand in the first place. 
That is what I described pretty explicitly in the cover letter.

> The caller uses the return value to decide if an entry from t1 (and not 
> from t2) was consumed, if an entry each from both t1 and t2 were 
> consumed, or an entry from t2 (and not from t1) was consumed.  It 
> doesn't change the fact that the entry at the beginning of each tree we 
> looked at in this function at that point shared the same name and we 
> consumed them, whatever the call to diff_tree_sha1() to run a recursive 
> comparison between the trees found.
> 
> The likely fix would be to remove assignment to retval instead.

Thanks, that is the alternative I suggested after the dashdashdash.

Ciao,
Johannes

  reply	other threads:[~2011-03-22 18:20 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-22 12:49 [PATCH 0/2] Fix issues found by gcc 4.6.0 Johannes Schindelin
2011-03-22 12:50 ` [PATCH 1/2] Remove unused variables Johannes Schindelin
2011-03-22 18:15   ` Junio C Hamano
2011-03-22 18:42     ` Johannes Schindelin
2011-03-22 19:43   ` Jonathan Nieder
2011-03-22 12:50 ` [PATCH 2/2] Actually use retval Johannes Schindelin
2011-03-22 18:10   ` Junio C Hamano
2011-03-22 18:20     ` Johannes Schindelin [this message]
2011-03-23  1:26     ` [PATCH 0/2] " Jonathan Nieder
2011-03-23  1:28       ` [PATCH 1/2] tree-diff: make diff_tree return void Jonathan Nieder
2011-03-23  1:30       ` [PATCH 2/2] tree-diff: make diff_tree_sha1 " Jonathan Nieder

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