// Test using std::function wrapper.
// { dg-do run { target c++11 } }
#include <functional>
typedef std::function<int()> FN;
template<typename T>
FN f(T fn)
{
  return [fn]{return fn(2);};
}
int main()
{
  auto fn = f([](int i){return i*21;});
  if (fn() != 42)
    return 1;
  return 0;
}