text: // RUN: %clang_cc1 -verify -fopenmp -ferror-limit 100 -std=c++11 -o - %s
  
  // RUN: %clang_cc1 -verify -fopenmp-simd -ferror-limit 100 -std=c++11 -o - %s
  
  void foo() {
  }
  
  #pragma omp task // expected-error {{unexpected OpenMP directive '#pragma omp task'}}
  
  class S {
    S(const S &s) { a = s.a + 12; } // expected-note 16 {{implicitly declared private here}}
    int a;
  
  public:
    S() : a(0) {}
    S(int a) : a(a) {}
    operator int() { return a; }
    S &operator++() { return *this; }
    S operator+(const S &) { return *this; }
  };
  
  class S1 {
    int a;
  
  public:
    S1() : a(0) {}
    S1 &operator++() { return *this; }
    S1(const S1 &) = delete; // expected-note 2 {{'S1' has been explicitly marked deleted here}}
  };
  
  template <class T>
  int foo() {
    T a;
    T &b = a;
    int r;
    S1 s1;
  // expected-error@+1 2 {{call to deleted constructor of 'S1'}}
  #pragma omp task
  // expected-note@+1 2 {{predetermined as a firstprivate in a task construct here}}
    ++s1;
  #pragma omp task default(none)
  #pragma omp task default(shared)
    ++a; // expected-error 2 {{variable 'a' must have explicitly specified data sharing attributes}}
  #pragma omp task default(none)
  #pragma omp task
    // expected-error@+1 {{calling a private constructor of class 'S'}}
    ++a; // expected-error 2 {{variable 'a' must have explicitly specified data sharing attributes}}
  #pragma omp task
  #pragma omp task
    // expected-error@+1 {{calling a private constructor of class 'S'}}
    ++a; // expected-error {{calling a private constructor of class 'S'}}
  #pragma omp task default(shared)
  #pragma omp task
    // expected-error@+1 {{calling a private constructor of class 'S'}}
    ++a;
  #pragma omp parallel shared(a)
  #pragma omp task
  #pragma omp task
    ++a;
  #pragma omp parallel shared(a)
  #pragma omp task default(shared)
  #pragma omp task
    ++a;
  #pragma omp task
  #pragma omp parallel
    ++a; // expected-error {{calling a private constructor of class 'S'}}
  // expected-error@+2 {{calling a private constructor of class 'S'}}
  #pragma omp task
    ++b;
  #pragma omp task
  // expected-error@+1 2 {{calling a private constructor of class 'S'}}
  #pragma omp parallel shared(a, b)
    ++a, ++b;
  // expected-note@+1 2 {{defined as reduction}}
  #pragma omp parallel reduction(+ : r)
  // expected-error@+1 2 {{argument of a reduction clause of a parallel construct must not appear in a firstprivate clause on a task construct}}
  #pragma omp task firstprivate(r)
    ++r;
  // expected-note@+1 2 {{defined as reduction}}
  #pragma omp parallel reduction(+ : r)
  #pragma omp task default(shared)
    // expected-error@+1 2 {{reduction variables may not be accessed in an explicit task}}
    ++r;
  // expected-note@+1 2 {{defined as reduction}}
  #pragma omp parallel reduction(+ : r)
  #pragma omp task
    // expected-error@+1 2 {{reduction variables may not be accessed in an explicit task}}
    ++r;
  #pragma omp parallel
  // expected-note@+1 2 {{defined as reduction}}
  #pragma omp for reduction(+ : r)
    for (int i = 0; i < 10; ++i)
  // expected-error@+1 2 {{argument of a reduction clause of a for construct must not appear in a firstprivate clause on a task construct}}
  #pragma omp task firstprivate(r)
      ++r;
  #pragma omp parallel
  // expected-note@+1 2 {{defined as reduction}}
  #pragma omp for reduction(+ : r)
    for (int i = 0; i < 10; ++i)
  #pragma omp task default(shared)
      // expected-error@+1 2 {{reduction variables may not be accessed in an explicit task}}
      ++r;
  #pragma omp parallel
  // expected-note@+1 2 {{defined as reduction}}
  #pragma omp for reduction(+ : r)
    for (int i = 0; i < 10; ++i)
  #pragma omp task
      // expected-error@+1 2 {{reduction variables may not be accessed in an explicit task}}
      ++r;
  // expected-note@+1 {{non-shared variable in a task construct is predetermined as firstprivate}}
  #pragma omp task
  // expected-error@+2 {{reduction variable must be shared}}
  // expected-error@+1 {{region cannot be closely nested inside 'task' region; perhaps you forget to enclose 'omp for' directive into a parallel region?}}
  #pragma omp for reduction(+ : r)
    ++r;
  // expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'untied' clause}}
  #pragma omp task untied untied
    ++r;
  // expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'mergeable' clause}}
  #pragma omp task mergeable mergeable
    ++r;
    return a + b;
  }
  
  int main(int argc, char **argv) {
    int a;
    int &b = a;
    S sa;
    S &sb = sa;
    int r;
  #pragma omp task { // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
    foo();
  #pragma omp task( // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
    foo();
  #pragma omp task[ // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
    foo();
  #pragma omp task] // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
    foo();
  #pragma omp task) // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
    foo();
  #pragma omp task } // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
    foo();
  #pragma omp task
  // expected-warning@+1 {{extra tokens at the end of '#pragma omp task' are ignored}}
  #pragma omp task unknown()
    foo();
  L1:
    foo();
  #pragma omp task
    ;
  #pragma omp task
    {
      goto L1; // expected-error {{use of undeclared label 'L1'}}
      argc++;
    }
  
    for (int i = 0; i < 10; ++i) {
      switch (argc) {
      case (0):
  #pragma omp task
      {
        foo();
        break;    // expected-error {{'break' statement not in loop or switch statement}}
        continue; // expected-error {{'continue' statement not in loop statement}}
      }
      default:
        break;
      }
    }
  #pragma omp task default(none)
    ++argc; // expected-error {{variable 'argc' must have explicitly specified data sharing attributes}}
  
    goto L2; // expected-error {{use of undeclared label 'L2'}}
  #pragma omp task
  L2:
    foo();
  #pragma omp task
    {
      return 1; // expected-error {{cannot return from OpenMP region}}
    }
  
    [[]] // expected-error {{an attribute list cannot appear here}}
  #pragma omp task
        for (int n = 0; n < 100; ++n) {
    }
  
  #pragma omp task default(none)
  #pragma omp task default(shared)
    ++a; // expected-error {{variable 'a' must have explicitly specified data sharing attributes}}
  #pragma omp task default(none)
  #pragma omp task
    ++a; // expected-error {{variable 'a' must have explicitly specified data sharing attributes}}
  #pragma omp task default(shared)
  #pragma omp task
    ++a;
  #pragma omp task
  #pragma omp parallel
    ++a;
  #pragma omp task
    ++b;
  #pragma omp task
  #pragma omp parallel shared(a, b)
    ++a, ++b;
  #pragma omp task default(none)
  #pragma omp task default(shared)
    ++sa; // expected-error {{variable 'sa' must have explicitly specified data sharing attributes}}
  #pragma omp task default(none)
  #pragma omp task
    // expected-error@+1 {{calling a private constructor of class 'S'}}
    ++sa; // expected-error {{variable 'sa' must have explicitly specified data sharing attributes}}
  #pragma omp task
  #pragma omp task
    // expected-error@+1 {{calling a private constructor of class 'S'}}
    ++sa; // expected-error {{calling a private constructor of class 'S'}}
  #pragma omp task default(shared)
  #pragma omp task
    // expected-error@+1 {{calling a private constructor of class 'S'}}
    ++sa;
  #pragma omp parallel shared(sa)
  #pragma omp task
  #pragma omp task
    ++sa;
  #pragma omp parallel shared(sa)
  #pragma omp task default(shared)
  #pragma omp task
    ++sa;
  #pragma omp task
  #pragma omp parallel
    ++sa; // expected-error {{calling a private constructor of class 'S'}}
  // expected-error@+2 {{calling a private constructor of class 'S'}}
  #pragma omp task
    ++sb;
  // expected-error@+2 2 {{calling a private constructor of class 'S'}}
  #pragma omp task
  #pragma omp parallel shared(sa, sb)
    ++sa, ++sb;
  // expected-note@+1 2 {{defined as reduction}}
  #pragma omp parallel reduction(+ : r)
  // expected-error@+1 {{argument of a reduction clause of a parallel construct must not appear in a firstprivate clause on a task construct}}
  #pragma omp task firstprivate(r)
    // expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
    ++r;
  // expected-note@+1 {{defined as reduction}}
  #pragma omp parallel reduction(+ : r)
  #pragma omp task default(shared)
    // expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
    ++r;
  // expected-note@+1 {{defined as reduction}}
  #pragma omp parallel reduction(+ : r)
  #pragma omp task
    // expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
    ++r;
  #pragma omp parallel
  // expected-note@+1 2 {{defined as reduction}}
  #pragma omp for reduction(+ : r)
    for (int i = 0; i < 10; ++i)
  // expected-error@+1 {{argument of a reduction clause of a for construct must not appear in a firstprivate clause on a task construct}}
  #pragma omp task firstprivate(r)
      // expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
      ++r;
  #pragma omp parallel
  // expected-note@+1 {{defined as reduction}}
  #pragma omp for reduction(+ : r)
    for (int i = 0; i < 10; ++i)
  #pragma omp task default(shared)
      // expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
      ++r;
  #pragma omp parallel
  // expected-note@+1 {{defined as reduction}}
  #pragma omp for reduction(+ : r)
    for (int i = 0; i < 10; ++i)
  #pragma omp task
      // expected-error@+1 {{reduction variables may not be accessed in an explicit task}}
      ++r;
  // expected-note@+1 {{non-shared variable in a task construct is predetermined as firstprivate}}
  #pragma omp task
  // expected-error@+2 {{reduction variable must be shared}}
  // expected-error@+1 {{region cannot be closely nested inside 'task' region; perhaps you forget to enclose 'omp for' directive into a parallel region?}}
  #pragma omp for reduction(+ : r)
    ++r;
  // expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'untied' clause}}
  #pragma omp task untied untied
    ++r;
  // expected-error@+1 {{directive '#pragma omp task' cannot contain more than one 'mergeable' clause}}
  #pragma omp task mergeable mergeable
    ++r;
    // expected-note@+2 {{in instantiation of function template specialization 'foo<int>' requested here}}
    // expected-note@+1 {{in instantiation of function template specialization 'foo<S>' requested here}}
    return foo<int>() + foo<S>();
  }
  
  