This example causes "Error reporting routines re-entered", and seems to be different from those reported so far:

struct a {};
template<typename> struct b;
template<> struct b<a> {static const int v = 3;};

template <typename L>
struct c {
  static_assert(b<L>::v == 3, "");
  using t = int;
};
template <typename E, typename T>
auto d(T x) -> decltype(((x.template e<E>()))) {return ((x.template e<E>()));}
template <typename B>
struct f {
  template <typename E>
  struct h {
    using w = int;
    typename c<E>::t x;
  };
  template <typename E>
  decltype(d<typename h<E>::w>(*(B*)nullptr)) e();
};
struct g {
  template <typename> int e();
};
int main(int argc, char** argv) {
  d<a>(f<g>{});
  return 0;
}

It is probably invalid code.  Some small variations on it cause infinite loops (recursion depth exceeded), which also seem to be incorrect.  The full error message for the code above with 4.7.1 is:

‘
Internal compiler error: Error reporting routines re-entered.
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.