linux-ext4 - Re: e2fsprogs coverity patch <cid-03.diff>

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Date:	Sun, 18 Mar 2007 10:09:24 -0400
From:	Theodore Tso <tytso@....edu>
To:	"Brian D. Behlendorf" <behlendorf1@...l.gov>
Cc:	linux-ext4@...r.kernel.org, adilger@...sterfs.com,
	wartens2@...l.gov
Subject: Re: e2fsprogs coverity patch <cid-03.diff>

On Fri, Feb 09, 2007 at 06:11:26PM -0800, Brian D. Behlendorf wrote:
> blkid_dev_has_tag() will immediately return -1 (an error if value is NULL. Thus
> at the test later on value cannot be NULL. There are two possible ways to go
> about fixing this. The first would be to remove the first NULL check for value.
> The second one would be to remove the second check (and the deadcode). I could
> be persuaded either way, but to preserve existing functionality I will opt to
> remove the second check.

Better to do this the other way, I think.  It exposes more
functionality, and there shouldn't be any code that depends on
blkid_dev_has_tag returning an error is value is NULL.

					- Ted
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