lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:	Wed, 8 Oct 2014 11:46:20 +0200
From:	Michal Kubecek <mkubecek@...e.cz>
To:	David Laight <David.Laight@...LAB.COM>
Cc:	'Hannes Frederic Sowa' <hannes@...essinduktion.org>,
	Fabian Frederick <fabf@...net.be>,
	Guenter Roeck <linux@...ck-us.net>,
	David Miller <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1 net-next] af_unix: remove NULL assignment on static

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

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists