clang-tests/gcc-4_2-testsuite/src/g++.old-deja/g++.pt/enum6.C

// { dg-do assemble  }

template <class T>
struct vector {};

template<class T>
void fn(T)
{
  enum tern { H, L, X, U };

  vector<tern> ternvec; // { dg-warning "template argument uses" } composed from a local type
}

template void fn(int); // { dg-error "note" }