linux-kernel - Re: typecheck code

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Message-ID: <AANLkTi==JWuwP23xCHgMXZefVAw_kPzQmh1nRqcot0eM@mail.gmail.com>
Date:	Mon, 31 Jan 2011 21:42:47 +0000
From:	julie Sullivan <kernelmail.jms@...il.com>
To:	Dave Hylands <dhylands@...il.com>
Cc:	Sri Ram Vemulpali <sri.ram.gmu06@...il.com>,
	Kernel-newbies <kernelnewbies@...linux.org>,
	linux-kernel-mail <linux-kernel@...r.kernel.org>
Subject: Re: typecheck code

>If dummy and dummy2 are of different types, then when you try and do a
>pointer comparison (&dummy == &dummy2) it will produce a compiler
>warning/error.

O--ooohhh...
I came across this ages ago when I was trying to unravel the jiffies
wraparound macros and I've been scratching my head ever since trying
to figure out what this line _really_  did. A bit arcane, isn't it?
Thanks a lot Dave and everyone for explaining.

Cheers
Julie
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