clang/test/Modules/Inputs/merge-template-members/c.h

namespace N {
  template <typename> struct A {
    int n;
    A() : n() {}
  };

  // Trigger instantiation of definition of A<int>.
  struct C {
    A<int> a;
  };
}

// Merge in another declaration and update records.
#include "b1.h"