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Date: Thu, 27 Feb 2014 10:24:35 -0500
From: "Theodore Ts'o" <tytso@mit.edu>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Borislav Petkov <bp@alien8.de>, Joe Perches <joe@perches.com>,
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        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH V2] sparse: Allow override of sizeof(bool) warning
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On Thu, Feb 27, 2014 at 07:10:25AM -0800, H. Peter Anvin wrote:
> Keep in mind, too, that for the kernel we don't care about the full
> C standard but a subset.  We rely on extrastandard behavior all over
> the place.  For all ABIs supported by the kernel, sizeof(_Book) == 1
> and so everything is sane.

Do we have a fairly comprehensive list of what these extrastandard
requirements / assumptions are?  It might be a good idea to have one
that we can point to, so that (a) people who are trying to define a
new architecture knows what they need to handle, (b) and so we can
give a list of things that static code analyzers like smatch and
coverity and sparse should be able to suppress (perhaps in a Linux
kernel-only mode).

					- Ted