Re: [PATCH 4/11] use ether_addr_equal_64bits

Julia Lawall
2014-01-06T09:20:45Z

On Mon, 6 Jan 2014, Johannes Berg wrote:

> On Mon, 2014-01-06 at 10:04 +0100, Julia Lawall wrote:
>
> > OK, the question was expressed badly. Is there any way to use the value
> > to trigger an action at build time? The only way I kow to trigger an
> > action is with #error, but #error is processed by cpp, which doesn't know
> > about the size of types.
>
> That's exactly BUILD_BUG_ON(), I believe.

Maybe BUILD_BUG_ON_ZERO? It's goal seems to be to return an integer,
which could then be used as an array size in a dummy structure. The
structure declaration would not generate any code. The structure would
have to have a name, thoough.

julia