linux-kernel - Re: [PATCH] ixen-netback: fix trivial printf format build warning

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Message-Id: <20140326.144613.1346051389108269225.davem@davemloft.net>
Date:	Wed, 26 Mar 2014 14:46:13 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	sj38.park@...il.com
Cc:	Ian.Campbell@...rix.com, trivial@...nel.org, wei.liu2@...rix.com,
	xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH] ixen-netback: fix trivial printf format build warning

From: SeongJae Park <sj38.park@...il.com>
Date: Wed, 26 Mar 2014 19:34:21 +0900

> Thank you for let me know kindly :)

Also your fix wasn't correct.

You changed the code to use %lx but the type isn't a long.

It's the difference between two pointers, which is ptrdiff_t.  The
proper printf format string for a hexadecimal ptrdiff_t is %tx
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