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// { dg-options -std=c++0x }

template

constexpr T do_last(T* x, int n) {

 return x[n - 1]; //

}

template

constexpr T last(T (&x)[N]) {

 return do_last(x, N);

}

constexpr bool is_negative(int x) { return x < 0; }

template

struct IsNegative {

  constexpr bool operator()(const T& x) {

    return x < T(0);

  }

};

template

constexpr bool has_neg(T (&x)[N], Pred p) {

  return p(last(x)); // Line 22

}

constexpr int a[] = {1, -2};

constexpr auto answer1 = has_neg(a, IsNegative{}); // Line 27

constexpr auto answer2 = has_neg(a, is_negative);

static_assert(answer2 == answer1, "Error");