gcc/testsuite/g++.dg/cpp0x/alias-decl-40.C

   1 // PR c++/58170
   2 // { dg-require-effective-target c++11 }
   3 // { dg-prune-output "not declared" }
   4 // { dg-prune-output "expected" }
   5
   6 template <typename T, typename U>
   7 struct base {
   8   template <typename V>
   9   struct derived;
  10 };
  11
  12 template <typename T, typename U>
  13 template <typename V>
  14 struct base<T, U>::derived : public base<T, V> {
  15 };
  16
  17 // This (wrong?) alias declaration provokes the crash.
  18 template <typename T, typename U, typename V>
  19 using alias = base<T, U>::derived<V>; // { dg-error "template|typename" }
  20
  21 // This one works:
  22 // template <typename T, typename U, typename V>
  23 // using alias = typename base<T, U>::template derived<V>;
  24
  25 template <typename T>
  26 void f() {
  27   alias<T, bool, char> m{};
  28   (void) m;
  29 }
  30
  31 int main() {
  32   f<int>();
  33 }