C++ PATCH: Fix PR 13275

[Joseph S. Myers]

On Tue, 16 Dec 2003, Jan Vroonhof wrote:

> This built-in really is __force_constant_expression__

Which is something Zack has specifically objected to in the past (in
favour of a more specific __builtin_offsetof that does what it says, and
any other extensions to constant expressions for particular cases being
minimal, individually justified and documented); see the thread following
from <http://gcc.gnu.org/ml/gcc-patches/2003-02/msg01008.html>.

-- 
Joseph S. Myers
jsm@polyomino.org.uk