RE: [PATCH v3] kernel.h: Skip single-eval logic on literals in min()/max()

[David Laight]

From: Kees Cook
> Sent: 13 March 2018 22:15
...
> I'll send a "const_max()" which will refuse to work on
> non-constant-values (so it doesn't get accidentally used on variables
> that could be exposed to double-evaluation), and will work for stack
> array declarations (to avoid the overly-sensitive -Wvla checks).

ISTR the definitions were of the form:
        char foo[max(sizeof (struct bah), sizeof (struct baz))];
This doesn't generate a 'foo' with the required alignment.
It would be much better to use a union.

        David