From: David Laight <David.Laight@ACULAB.COM>
To: "'Hannes Frederic Sowa'" <hannes@stressinduktion.org>,
        Fabian Frederick <fabf@skynet.be>
CC: Guenter Roeck <linux@roeck-us.net>, David Miller <davem@davemloft.net>,
        "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: RE: [PATCH 1/1 net-next] af_unix: remove NULL assignment on static
Thread-Topic: [PATCH 1/1 net-next] af_unix: remove NULL assignment on static
Thread-Index: AQHP4nDaY/3w3KaSUkWpLu0HQtjtIJwl6V3A
Date: Wed, 8 Oct 2014 09:10:23 +0000
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From: Hannes Frederic Sowa
> I think David's concern was whether if 0 == false in all situations. It
> is pretty clear that static memory is initialized to 0.

I'm not 100% sure about that.
static pointers may be required to be initialised to NULL.
If NULL isn't the 'all 0 bit pattern' then the memory would need
to be initialised to a different pattern.
Not that anyone is likely to implement such a system because far too
much code will break.

The only system I knew where 'native' NULL pointers were 'all 1s'
used 0 in its C compiler.

	David

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