Re: [PATCH V2] sparse: Allow override of sizeof(bool) warning

Theodore Ts'o
2014-02-27T15:24:58Z

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