http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52949
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-04-12 16:12:15 UTC ---
this is no different to;
struct Vector
{
static const int i = sizeof(member_); // error
int member_;
static const int j = sizeof(member_); // ok
};