| // Warn if we try to give an instantiation visibility after it's already | |
| // been instantiated. | |
| // { dg-require-visibility "" } | |
| template <class T> struct A { void f (T); }; | |
| template <class T> void A<T>::f (T) { } | |
| A<double> ad; | |
| template struct __attribute ((visibility ("hidden"))) A<double>; // { dg-warning "already defined" } |