gcc/testsuite/g++.dg/template/pr71710.C

// { dg-do compile { target c++11 } }
// PR C++/71710 ICE with decltype & using

template < typename > struct A
{
  A a;			       // { dg-error "incomplete" }
  template < int > using B = decltype (a);
  B < 0 > b;		       // { dg-prune-output "B. does not name a type" }
  template < int C > B < C > foo ();
};