text: // RUN: %clang_cc1 -fsyntax-only -fopenmp -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify %s -Wno-openmp-target -Wuninitialized
  
  // RUN: %clang_cc1 -fsyntax-only -fopenmp-simd -x c++ -std=c++11 -fexceptions -fcxx-exceptions -verify %s -Wno-openmp-target -Wuninitialized
  
  class S {
    int a;
    S() : a(0) {}
  
  public:
    S(int v) : a(v) {}
    S(const S &s) : a(s.a) {}
  };
  
  static int sii;
  // expected-note@+1 {{defined as threadprivate or thread local}}
  #pragma omp threadprivate(sii)
  static int globalii;
  
  int test_iteration_spaces() {
    const int N = 100;
    float a[N], b[N], c[N];
    int ii, jj, kk;
    float fii;
    double dii;
  #pragma omp target parallel for simd
    for (int i = 0; i < 10; i += 1) {
      c[i] = a[i] + b[i];
    }
  #pragma omp target parallel for simd
    for (char i = 0; i < 10; i++) {
      c[i] = a[i] + b[i];
    }
  #pragma omp target parallel for simd
    for (char i = 0; i < 10; i += '\1') {
      c[i] = a[i] + b[i];
    }
  #pragma omp target parallel for simd
    for (long long i = 0; i < 10; i++) {
      c[i] = a[i] + b[i];
    }
  // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'double'}}
  #pragma omp target parallel for simd
    for (long long i = 0; i < 10; i += 1.5) {
      c[i] = a[i] + b[i];
    }
  #pragma omp target parallel for simd
    for (long long i = 0; i < 'z'; i += 1u) {
      c[i] = a[i] + b[i];
    }
  // expected-error@+2 {{variable must be of integer or random access iterator type}}
  #pragma omp target parallel for simd
    for (float fi = 0; fi < 10.0; fi++) {
      c[(int)fi] = a[(int)fi] + b[(int)fi];
    }
  // expected-error@+2 {{variable must be of integer or random access iterator type}}
  #pragma omp target parallel for simd
    for (double fi = 0; fi < 10.0; fi++) {
      c[(int)fi] = a[(int)fi] + b[(int)fi];
    }
  // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  #pragma omp target parallel for simd
    for (int &ref = ii; ref < 10; ref++) {
    }
  // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  #pragma omp target parallel for simd
    for (int i; i < 10; i++)
      c[i] = a[i];
  
  // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  #pragma omp target parallel for simd
    for (int i = 0, j = 0; i < 10; ++i)
      c[i] = a[i];
  
  // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  #pragma omp target parallel for simd
    for (; ii < 10; ++ii)
      c[ii] = a[ii];
  
  // expected-warning@+3 {{expression result unused}}
  // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  #pragma omp target parallel for simd
    for (ii + 1; ii < 10; ++ii)
      c[ii] = a[ii];
  
  // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  #pragma omp target parallel for simd
    for (c[ii] = 0; ii < 10; ++ii)
      c[ii] = a[ii];
  
  // Ok to skip parenthesises.
  #pragma omp target parallel for simd
    for (((ii)) = 0; ii < 10; ++ii)
      c[ii] = a[ii];
  
  // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
  #pragma omp target parallel for simd
    for (int i = 0; i; i++)
      c[i] = a[i];
  
  // expected-error@+3 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
  // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'i'}}
  #pragma omp target parallel for simd
    for (int i = 0; jj < kk; ii++)
      c[i] = a[i];
  
  // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
  #pragma omp target parallel for simd
    for (int i = 0; !!i; i++)
      c[i] = a[i];
  
  // Ok
  #pragma omp target parallel for simd
    for (int i = 0; i != 1; i++)
      c[i] = a[i];
  
  // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'i'}}
  #pragma omp target parallel for simd
    for (int i = 0;; i++)
      c[i] = a[i];
  
  // Ok.
  #pragma omp target parallel for simd
    for (int i = 11; i > 10; i--)
      c[i] = a[i];
  
  // Ok.
  #pragma omp target parallel for simd
    for (int i = 0; i < 10; ++i)
      c[i] = a[i];
  
  // Ok.
  #pragma omp target parallel for simd
    for (ii = 0; ii < 10; ++ii)
      c[ii] = a[ii];
  
  // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
  #pragma omp target parallel for simd
    for (ii = 0; ii < 10; ++jj)
      c[ii] = a[jj];
  
  // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
  #pragma omp target parallel for simd
    for (ii = 0; ii < 10; ++++ii)
      c[ii] = a[ii];
  
  // Ok but undefined behavior (in general, cannot check that incr
  // is really loop-invariant).
  #pragma omp target parallel for simd
    for (ii = 0; ii < 10; ii = ii + ii)
      c[ii] = a[ii];
  
  // expected-error@+2 {{expression must have integral or unscoped enumeration type, not 'float'}}
  #pragma omp target parallel for simd
    for (ii = 0; ii < 10; ii = ii + 1.0f)
      c[ii] = a[ii];
  
  // Ok - step was converted to integer type.
  #pragma omp target parallel for simd
    for (ii = 0; ii < 10; ii = ii + (int)1.1f)
      c[ii] = a[ii];
  
  // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
  #pragma omp target parallel for simd
    for (ii = 0; ii < 10; jj = ii + 2)
      c[ii] = a[ii];
  
  // expected-warning@+3 {{relational comparison result unused}}
  // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
  #pragma omp target parallel for simd
    for (ii = 0; ii<10; jj> kk + 2)
      c[ii] = a[ii];
  
  // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
  #pragma omp target parallel for simd
    for (ii = 0; ii < 10;)
      c[ii] = a[ii];
  
  // expected-warning@+3 {{expression result unused}}
  // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
  #pragma omp target parallel for simd
    for (ii = 0; ii < 10; !ii)
      c[ii] = a[ii];
  
  // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
  #pragma omp target parallel for simd
    for (ii = 0; ii < 10; ii ? ++ii : ++jj)
      c[ii] = a[ii];
  
  // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'ii'}}
  #pragma omp target parallel for simd
    for (ii = 0; ii < 10; ii = ii < 10)
      c[ii] = a[ii];
  
  // expected-note@+3 {{loop step is expected to be positive due to this condition}}
  // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
  #pragma omp target parallel for simd
    for (ii = 0; ii < 10; ii = ii + 0)
      c[ii] = a[ii];
  
  // expected-note@+3 {{loop step is expected to be positive due to this condition}}
  // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
  #pragma omp target parallel for simd
    for (ii = 0; ii < 10; ii = ii + (int)(0.8 - 0.45))
      c[ii] = a[ii];
  
  // expected-note@+3 {{loop step is expected to be positive due to this condition}}
  // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
  #pragma omp target parallel for simd
    for (ii = 0; (ii) < 10; ii -= 25)
      c[ii] = a[ii];
  
  // expected-note@+3 {{loop step is expected to be positive due to this condition}}
  // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
  #pragma omp target parallel for simd
    for (ii = 0; (ii < 10); ii -= 0)
      c[ii] = a[ii];
  
  // expected-note@+3 {{loop step is expected to be negative due to this condition}}
  // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}}
  #pragma omp target parallel for simd
    for (ii = 0; ii > 10; (ii += 0))
      c[ii] = a[ii];
  
  // expected-note@+3 {{loop step is expected to be positive due to this condition}}
  // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
  #pragma omp target parallel for simd
    for (ii = 0; ii < 10; (ii) = (1 - 1) + (ii))
      c[ii] = a[ii];
  
  // expected-note@+3 {{loop step is expected to be negative due to this condition}}
  // expected-error@+2 {{increment expression must cause 'ii' to decrease on each iteration of OpenMP for loop}}
  #pragma omp target parallel for simd
    for ((ii = 0); ii > 10; (ii -= 0))
      c[ii] = a[ii];
  
  // expected-note@+3 {{loop step is expected to be positive due to this condition}}
  // expected-error@+2 {{increment expression must cause 'ii' to increase on each iteration of OpenMP for loop}}
  #pragma omp target parallel for simd
    for (ii = 0; (ii < 10); (ii -= 0))
      c[ii] = a[ii];
  
  // expected-note@+2  {{defined as firstprivate}}
  // expected-error@+2 {{loop iteration variable in the associated loop of 'omp target parallel for simd' directive may not be firstprivate, predetermined as linear}}
  #pragma omp target parallel for simd firstprivate(ii)
    for (ii = 0; ii < 10; ii++)
      c[ii] = a[ii];
  
  #pragma omp target parallel for simd linear(ii)
    for (ii = 0; ii < 10; ii++)
      c[ii] = a[ii];
  
  // expected-note@+2  {{defined as private}}
  // expected-error@+2 {{loop iteration variable in the associated loop of 'omp target parallel for simd' directive may not be private, predetermined as linear}}
  #pragma omp target parallel for simd private(ii)
    for (ii = 0; ii < 10; ii++)
      c[ii] = a[ii];
  
  // expected-note@+2  {{defined as lastprivate}}
  // expected-error@+2 {{loop iteration variable in the associated loop of 'omp target parallel for simd' directive may not be lastprivate, predetermined as linear}}
  #pragma omp target parallel for simd lastprivate(ii)
    for (ii = 0; ii < 10; ii++)
      c[ii] = a[ii];
  
    {
  // expected-error@+2 {{loop iteration variable in the associated loop of 'omp target parallel for simd' directive may not be threadprivate or thread local, predetermined as linear}}
  #pragma omp target parallel for simd
      for (sii = 0; sii < 10; sii += 1)
        c[sii] = a[sii];
    }
  
    {
  #pragma omp target parallel for simd
      for (globalii = 0; globalii < 10; globalii += 1)
        c[globalii] = a[globalii];
    }
  
    {
  #pragma omp target parallel for simd collapse(2)
      for (ii = 0; ii < 10; ii += 1)
      for (globalii = 0; globalii < 10; globalii += 1)
        c[globalii] += a[globalii] + ii;
    }
  
  // expected-error@+2 {{statement after '#pragma omp target parallel for simd' must be a for loop}}
  #pragma omp target parallel for simd
    for (auto &item : a) {
      item = item + 1;
    }
  
  // expected-note@+3 {{loop step is expected to be positive due to this condition}}
  // expected-error@+2 {{increment expression must cause 'i' to increase on each iteration of OpenMP for loop}}
  #pragma omp target parallel for simd
    for (unsigned i = 9; i < 10; i--) {
      c[i] = a[i] + b[i];
    }
  
    int(*lb)[4] = nullptr;
  #pragma omp target parallel for simd
    for (int(*p)[4] = lb; p < lb + 8; ++p) {
    }
  
  // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  #pragma omp target parallel for simd
    for (int a{0}; a < 10; ++a) {
    }
  
    return 0;
  }
  
  // Iterators allowed in openmp for-loops.
  namespace std {
  struct random_access_iterator_tag {};
  template <class Iter>
  struct iterator_traits {
    typedef typename Iter::difference_type difference_type;
    typedef typename Iter::iterator_category iterator_category;
  };
  template <class Iter>
  typename iterator_traits<Iter>::difference_type
  distance(Iter first, Iter last) { return first - last; }
  }
  class Iter0 {
  public:
    Iter0() {}
    Iter0(const Iter0 &) {}
    Iter0 operator++() { return *this; }
    Iter0 operator--() { return *this; }
    bool operator<(Iter0 a) { return true; }
  };
  // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'Iter0' for 1st argument}}
  // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'Iter0' for 1st argument}}
  int operator-(Iter0 a, Iter0 b) { return 0; }
  class Iter1 {
  public:
    Iter1(float f = 0.0f, double d = 0.0) {}
    Iter1(const Iter1 &) {}
    Iter1 operator++() { return *this; }
    Iter1 operator--() { return *this; }
    bool operator<(Iter1 a) { return true; }
    bool operator>=(Iter1 a) { return false; }
  };
  class GoodIter {
  public:
    GoodIter() {}
    GoodIter(const GoodIter &) {}
    GoodIter(int fst, int snd) {}
    GoodIter &operator=(const GoodIter &that) { return *this; }
    GoodIter &operator=(const Iter0 &that) { return *this; }
    GoodIter &operator+=(int x) { return *this; }
    GoodIter &operator-=(int x) { return *this; }
    explicit GoodIter(void *) {}
    GoodIter operator++() { return *this; }
    GoodIter operator--() { return *this; }
    bool operator!() { return true; }
    bool operator<(GoodIter a) { return true; }
    bool operator<=(GoodIter a) { return true; }
    bool operator>=(GoodIter a) { return false; }
    typedef int difference_type;
    typedef std::random_access_iterator_tag iterator_category;
  };
  // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'GoodIter' for 2nd argument}}
  // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}}
  int operator-(GoodIter a, GoodIter b) { return 0; }
  // expected-note@+1 3 {{candidate function not viable: requires single argument 'a', but 2 arguments were provided}}
  GoodIter operator-(GoodIter a) { return a; }
  // expected-note@+2 {{candidate function not viable: no known conversion from 'const Iter0' to 'int' for 2nd argument}}
  // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'GoodIter' for 1st argument}}
  GoodIter operator-(GoodIter a, int v) { return GoodIter(); }
  // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'GoodIter' for 1st argument}}
  GoodIter operator+(GoodIter a, int v) { return GoodIter(); }
  // expected-note@+2 {{candidate function not viable: no known conversion from 'GoodIter' to 'int' for 1st argument}}
  // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter1' to 'int' for 1st argument}}
  GoodIter operator-(int v, GoodIter a) { return GoodIter(); }
  // expected-note@+1 2 {{candidate function not viable: no known conversion from 'Iter0' to 'int' for 1st argument}}
  GoodIter operator+(int v, GoodIter a) { return GoodIter(); }
  
  int test_with_random_access_iterator() {
    GoodIter begin, end;
    Iter0 begin0, end0;
  #pragma omp target parallel for simd
    for (GoodIter I = begin; I < end; ++I)
      ++I;
  // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  #pragma omp target parallel for simd
    for (GoodIter &I = begin; I < end; ++I)
      ++I;
  #pragma omp target parallel for simd
    for (GoodIter I = begin; I >= end; --I)
      ++I;
  // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  #pragma omp target parallel for simd
    for (GoodIter I(begin); I < end; ++I)
      ++I;
  // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  #pragma omp target parallel for simd
    for (GoodIter I(nullptr); I < end; ++I)
      ++I;
  // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  #pragma omp target parallel for simd
    for (GoodIter I(0); I < end; ++I)
      ++I;
  // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  #pragma omp target parallel for simd
    for (GoodIter I(1, 2); I < end; ++I)
      ++I;
  #pragma omp target parallel for simd
    for (begin = GoodIter(0); begin < end; ++begin)
      ++begin;
  // expected-error@+3 {{invalid operands to binary expression ('GoodIter' and 'const Iter0')}}
  // expected-error@+2 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
  #pragma omp target parallel for simd
    for (begin = begin0; begin < end; ++begin)
      ++begin;
  // expected-error@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  #pragma omp target parallel for simd
    for (++begin; begin < end; ++begin)
      ++begin;
  #pragma omp target parallel for simd
    for (begin = end; begin < end; ++begin)
      ++begin;
  // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}}
  #pragma omp target parallel for simd
    for (GoodIter I = begin; I - I; ++I)
      ++I;
  // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}}
  #pragma omp target parallel for simd
    for (GoodIter I = begin; begin < end; ++I)
      ++I;
  // expected-error@+2 {{condition of OpenMP for loop must be a relational comparison ('<', '<=', '>', or '>=') of loop variable 'I'}}
  #pragma omp target parallel for simd
    for (GoodIter I = begin; !I; ++I)
      ++I;
  // expected-note@+3 {{loop step is expected to be negative due to this condition}}
  // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
  #pragma omp target parallel for simd
    for (GoodIter I = begin; I >= end; I = I + 1)
      ++I;
  #pragma omp target parallel for simd
    for (GoodIter I = begin; I >= end; I = I - 1)
      ++I;
  // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}
  #pragma omp target parallel for simd
    for (GoodIter I = begin; I >= end; I = -I)
      ++I;
  // expected-note@+3 {{loop step is expected to be negative due to this condition}}
  // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
  #pragma omp target parallel for simd
    for (GoodIter I = begin; I >= end; I = 2 + I)
      ++I;
  // expected-error@+2 {{increment clause of OpenMP for loop must perform simple addition or subtraction on loop variable 'I'}}
  #pragma omp target parallel for simd
    for (GoodIter I = begin; I >= end; I = 2 - I)
      ++I;
  // expected-error@+2 {{invalid operands to binary expression ('Iter0' and 'int')}}
  #pragma omp target parallel for simd
    for (Iter0 I = begin0; I < end0; ++I)
      ++I;
  // Initializer is constructor without params.
  // expected-error@+3 {{invalid operands to binary expression ('Iter0' and 'int')}}
  // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  #pragma omp target parallel for simd
    for (Iter0 I; I < end0; ++I)
      ++I;
    Iter1 begin1, end1;
  // expected-error@+3 {{invalid operands to binary expression ('Iter1' and 'Iter1')}}
  // expected-error@+2 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
  #pragma omp target parallel for simd
    for (Iter1 I = begin1; I < end1; ++I)
      ++I;
  // expected-note@+3 {{loop step is expected to be negative due to this condition}}
  // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
  #pragma omp target parallel for simd
    for (Iter1 I = begin1; I >= end1; ++I)
      ++I;
  // expected-error@+5 {{invalid operands to binary expression ('Iter1' and 'float')}}
  // expected-error@+4 {{could not calculate number of iterations calling 'operator-' with upper and lower loop bounds}}
  // Initializer is constructor with all default params.
  // expected-warning@+2 {{initialization clause of OpenMP for loop is not in canonical form ('var = init' or 'T var = init')}}
  #pragma omp target parallel for simd
    for (Iter1 I; I < end1; ++I) {
    }
    return 0;
  }
  
  template <typename IT, int ST>
  class TC {
  public:
    int dotest_lt(IT begin, IT end) {
  // expected-note@+3 {{loop step is expected to be positive due to this condition}}
  // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}}
  #pragma omp target parallel for simd
      for (IT I = begin; I < end; I = I + ST) {
        ++I;
      }
  // expected-note@+3 {{loop step is expected to be positive due to this condition}}
  // expected-error@+2 {{increment expression must cause 'I' to increase on each iteration of OpenMP for loop}}
  #pragma omp target parallel for simd
      for (IT I = begin; I <= end; I += ST) {
        ++I;
      }
  #pragma omp target parallel for simd
      for (IT I = begin; I < end; ++I) {
        ++I;
      }
    }
  
    static IT step() {
      return IT(ST);
    }
  };
  template <typename IT, int ST = 0>
  int dotest_gt(IT begin, IT end) {
  // expected-note@+3 2 {{loop step is expected to be negative due to this condition}}
  // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
  #pragma omp target parallel for simd
    for (IT I = begin; I >= end; I = I + ST) {
      ++I;
    }
  // expected-note@+3 2 {{loop step is expected to be negative due to this condition}}
  // expected-error@+2 2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
  #pragma omp target parallel for simd
    for (IT I = begin; I >= end; I += ST) {
      ++I;
    }
  
  // expected-note@+3 {{loop step is expected to be negative due to this condition}}
  // expected-error@+2 {{increment expression must cause 'I' to decrease on each iteration of OpenMP for loop}}
  #pragma omp target parallel for simd
    for (IT I = begin; I >= end; ++I) {
      ++I;
    }
  
  #pragma omp target parallel for simd
    for (IT I = begin; I < end; I += TC<int, ST>::step()) {
      ++I;
    }
  }
  
  void test_with_template() {
    GoodIter begin, end;
    TC<GoodIter, 100> t1;
    TC<GoodIter, -100> t2;
    t1.dotest_lt(begin, end);
    t2.dotest_lt(begin, end);         // expected-note {{in instantiation of member function 'TC<GoodIter, -100>::dotest_lt' requested here}}
    dotest_gt(begin, end);            // expected-note {{in instantiation of function template specialization 'dotest_gt<GoodIter, 0>' requested here}}
    dotest_gt<unsigned, 10>(0, 100);  // expected-note {{in instantiation of function template specialization 'dotest_gt<unsigned int, 10>' requested here}}
  }
  
  void test_loop_break() {
    const int N = 100;
    float a[N], b[N], c[N];
  #pragma omp target parallel for simd
    for (int i = 0; i < 10; i++) {
      c[i] = a[i] + b[i];
      for (int j = 0; j < 10; ++j) {
        if (a[i] > b[j])
          break; // OK in nested loop
      }
      switch (i) {
      case 1:
        b[i]++;
        break;
      default:
        break;
      }
      if (c[i] > 10)
        break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}
  
      if (c[i] > 11)
        break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}
    }
  
  #pragma omp target parallel for simd
    for (int i = 0; i < 10; i++) {
      for (int j = 0; j < 10; j++) {
        c[i] = a[i] + b[i];
        if (c[i] > 10) {
          if (c[i] < 20) {
            break; // OK
          }
        }
      }
    }
  }
  
  void test_loop_eh() {
    const int N = 100;
    float a[N], b[N], c[N];
  #pragma omp target parallel for simd
    for (int i = 0; i < 10; i++) {
      c[i] = a[i] + b[i];
      try { // expected-error {{'try' statement cannot be used in OpenMP simd region}}
        for (int j = 0; j < 10; ++j) {
          if (a[i] > b[j])
            throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
        }
        throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
      } catch (float f) {
        if (f > 0.1)
          throw a[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
        return; // expected-error {{cannot return from OpenMP region}}
      }
      switch (i) {
      case 1:
        b[i]++;
        break;
      default:
        break;
      }
      for (int j = 0; j < 10; j++) {
        if (c[i] > 10)
          throw c[i]; // expected-error {{'throw' statement cannot be used in OpenMP simd region}}
      }
    }
    if (c[9] > 10)
      throw c[9]; // OK
  
  #pragma omp target parallel for simd
    for (int i = 0; i < 10; ++i) {
      struct S {
        void g() { throw 0; }
      };
    }
  }
  
  void test_loop_firstprivate_lastprivate() {
    S s(4);
  #pragma omp target parallel for simd lastprivate(s) firstprivate(s)
    for (int i = 0; i < 16; ++i)
      ;
  }
  