On Mon, 6 Jan 2014, Johannes Berg wrote:

On Mon, 2014-01-06 at 10:04 +0100, Julia Lawall wrote:

quoted

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