// may have a trailing comma.
type T7 struct {}

func (T7) m1() {}
func ((T7)) m2() {}
func ((*T7)) m3() {}
func (x *(T7),) m4() {}
func (x (*(T7)),) m5() {}
func (x ((*((T7)))),) m6() {}

// Check that methods with parenthesized receiver are actually present (issue #23130).
var (
	_ = T7.m1
	_ = T7.m2
	_ = (*T7).m3
	_ = (*T7).m4
	_ = (*T7).m5
	_ = (*T7).m6

    typename T6, typename T7>
struct Types7 {
  typedef T1 Head;
  typedef Types6<T2, T3, T4, T5, T6, T7> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8>
struct Types8 {
  typedef T1 Head;
  typedef Types7<T2, T3, T4, T5, T6, T7, T8> Tail;
};

    typename T6, typename T7>
struct Types7 {
  typedef T1 Head;
  typedef Types6<T2, T3, T4, T5, T6, T7> Tail;
};

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8>
struct Types8 {
  typedef T1 Head;
  typedef Types7<T2, T3, T4, T5, T6, T7, T8> Tail;
};

    typename T6, typename T7>
internal::ValueArray7<T1, T2, T3, T4, T5, T6, T7> Values(T1 v1, T2 v2, T3 v3,
    T4 v4, T5 v5, T6 v6, T7 v7) {
  return internal::ValueArray7<T1, T2, T3, T4, T5, T6, T7>(v1, v2, v3, v4, v5,
      v6, v7);
}

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8>

    typename T6, typename T7>
internal::ValueArray7<T1, T2, T3, T4, T5, T6, T7> Values(T1 v1, T2 v2, T3 v3,
    T4 v4, T5 v5, T6 v6, T7 v7) {
  return internal::ValueArray7<T1, T2, T3, T4, T5, T6, T7>(v1, v2, v3, v4, v5,
      v6, v7);
}

template <typename T1, typename T2, typename T3, typename T4, typename T5,
    typename T6, typename T7, typename T8>

}

func _(x T1, y T3) {
	x = y
}

// Check that interfaces are type-checked in order of
// (embedded interface) dependencies (was issue 7158).

var x1 T5 = T7(nil)

type T5 interface {
	T6
}

type T6 interface {
	m() T7
}
type T7 interface {
	T5
}

// Actual test case from issue 7158.

func wrapNode() Node {
	return wrapElement()
}

func wrapElement() Element {
	return nil

  template <typename T1, typename T2, typename T3, typename T4, typename T5,
      typename T6, typename T7>
  operator ParamGenerator< ::std::tr1::tuple<T1, T2, T3, T4, T5, T6,
      T7> >() const {
    return ParamGenerator< ::std::tr1::tuple<T1, T2, T3, T4, T5, T6, T7> >(
        new CartesianProductGenerator7<T1, T2, T3, T4, T5, T6, T7>(
        static_cast<ParamGenerator<T1> >(g1_),
        static_cast<ParamGenerator<T2> >(g2_),

  template <typename T1, typename T2, typename T3, typename T4, typename T5,
      typename T6, typename T7>
  operator ParamGenerator< ::std::tr1::tuple<T1, T2, T3, T4, T5, T6,
      T7> >() const {
    return ParamGenerator< ::std::tr1::tuple<T1, T2, T3, T4, T5, T6, T7> >(
        new CartesianProductGenerator7<T1, T2, T3, T4, T5, T6, T7>(
        static_cast<ParamGenerator<T1> >(g1_),
        static_cast<ParamGenerator<T2> >(g2_),

        T2 interface { T1; T1 }
        T3 interface { T2; T2 }
        T4 interface { T3; T3 }
        T5 interface { T4; T4 }
        T6 interface { T5; T5 }
        T7 interface { T6; T6 }
        T8 interface { T7; T7 }
        T9 interface { T8; T8 }

        // TODO(gri) Enable this longer test once we have found a solution
        //           for the incorrect optimization in the validType check

type (
        T4 = ((*(T5)))
        T5 = T
)

func (T4) m4() {}
func _() { (T{}).m4 /* ERROR "cannot call pointer method m4 on T" */ () }
func _() { (&T{}).m4() }

type (
        T6 = (((T7)))
        T7 = (*(T8))
        T8 = T
)

func (T6) m6() {}
func _() { (T{}).m6 /* ERROR "cannot call pointer method m6 on T" */ () }
func _() { (&T{}).m6() }

type (
        T9 = *T10
        T10 = *T11