Re: [PATCH 1/1 net-next] af_unix: remove NULL assignment on static

From: Michal Kubecek
Date: Wed Oct 08 2014 - 05:46:30 EST

On Wed, Oct 08, 2014 at 09:10:23AM +0000, David Laight wrote:
> 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.

ISO C 99 says:

If an object that has static storage duration is not initialized
explicitly, then:
- if it has pointer type, it is initialized to a null pointer;
- if it has arithmetic type, it is initialized to (positive or
unsigned) zero;
- if it is an aggregate, every member is initialized (recursively)
according to these rules;
- if it is a union, the first named member is initialized
(recursively) according to these rules.

Michal Kubeček

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