linux-kernel - Re: [PATCH 4/4] fs/qnx4: decrement sizeof size in strncmp

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Message-ID: <hdi6ut$cs9$1@taverner.cs.berkeley.edu>
Date:	Thu, 12 Nov 2009 23:49:49 +0000 (UTC)
From:	daw@...berkeley.edu (David Wagner)
To:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] fs/qnx4: decrement sizeof size in strncmp

Julia Lawall  wrote:
> As observed by Joe Perches, sizeof of a constant string includes the
> trailing 0.  If what is wanted is to check the initial characters of
> another string, this trailing 0 should not be taken into account.  If an
> exact match is wanted, strcmp should be used instead.
>
> The semantic patch that makes this change is as follows:

A caution: Your patch changes behavior.  Is there a specific reason
to believe that the change in behavior is what is desired/intended in
this context?  Lacking any analysis that indicates that the change in
behavior is desired, I'm skeptical that a behavior-changing patch should
be applied.
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