Bug#949024: g++: internal compiler error on beignet

["Rebecca N. Palmer" <rebecca_palmer@zoho.com>]

creduce output (and yes, this isn't a valid program, but it still 
shouldn't ICE):

template <typename> struct a {
  enum { b };
};
class c;
template <int> class __attribute__((aligned((a<c>::b)))) d {};
class : d<0> {