From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ian Campbell <ian.campbell@citrix.com>
Subject: Re: [PATCH v2 3/7] libxl: make some _dipose functions
 idempotent and tolerate NULL
Date: Mon, 2 Mar 2015 17:07:10 +0000
Message-ID: <1425316030.24959.22.camel@citrix.com>
References: <1424876166-9618-1-git-send-email-wei.liu2@citrix.com>
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To: Wei Liu <wei.liu2@citrix.com>
Cc: ian.jackson@eu.citrix.com, xen-devel@lists.xen.org
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On Wed, 2015-02-25 at 14:56 +0000, Wei Liu wrote:
>          free(sl[i]);
> +        sl[i] = NULL;

I wonder if a helper which takes a void**p and does "free(*p); *p =
NULL" would be at all useful?

(NB, I intend to apply this patch regardless and am in the process of
doing so)