Re: [PATCH v2 2/4] string: Allow 2-argument strscpy()

[Kees Cook <keescook@chromium.org>]

On Mon, Feb 05, 2024 at 01:47:08PM +0100, Geert Uytterhoeven wrote:
> > +/*
> > + * The 2 argument style can only be used when dst is an array with a
> > + * known size.
> > + */
> > +#define __strscpy0(dst, src, ...)      \
> > +       sized_strscpy(dst, src, sizeof(dst) + __must_be_array(dst))
> > +#define __strscpy1(dst, src, size)     sized_strscpy(dst, src, size)
> 
> (dst), (src), (size) etc.

I normally don't do this when macro args are being expanded into
function arguments. I've only done it for when macro args are used in
expressions. Am I missing a side-effect here, or is this more about
stylistic consistency?

-- 
Kees Cook