1 namespace N {
2   template <typename> struct A {
3     int n;
AA4     A() : n() {}
5   };
6 
7   // Trigger instantiation of definition of A<int>.
8   struct C {
9     A<int> a;
10   };
11 }
12 
13 // Merge in another declaration and update records.
14 #include "b1.h"
15