text: // RUN: %clang_cc1 -verify -fopenmp %s
  // RUN: %clang_cc1 -verify -fopenmp -std=c++98 %s
  // RUN: %clang_cc1 -verify -fopenmp -std=c++11 %s
  
  // RUN: %clang_cc1 -verify -fopenmp-simd %s
  // RUN: %clang_cc1 -verify -fopenmp-simd -std=c++98 %s
  // RUN: %clang_cc1 -verify -fopenmp-simd -std=c++11 %s
  
  void foo() {
  }
  
  #if __cplusplus >= 201103L
  // expected-note@+2 4 {{declared here}}
  #endif
  bool foobool(int argc) {
    return argc;
  }
  
  struct S1; // expected-note {{declared here}}
  
  template <class T, typename S, int N, int ST> // expected-note {{declared here}}
  T tmain(T argc, S **argv) { //expected-note 2 {{declared here}}
    #pragma omp parallel for simd collapse // expected-error {{expected '(' after 'collapse'}}
    for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
    #pragma omp parallel for simd collapse ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
    for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
    #pragma omp parallel for simd collapse () // expected-error {{expected expression}}
    for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
    // expected-error@+3 {{expected ')'}} expected-note@+3 {{to match this '('}}
    // expected-error@+2 2 {{expression is not an integral constant expression}}
    // expected-note@+1 2 {{read of non-const variable 'argc' is not allowed in a constant expression}}
    #pragma omp parallel for simd collapse (argc 
    for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
    // expected-error@+1 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
    #pragma omp parallel for simd collapse (ST // expected-error {{expected ')'}} expected-note {{to match this '('}}
    for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
    #pragma omp parallel for simd collapse (1)) // expected-warning {{extra tokens at the end of '#pragma omp parallel for simd' are ignored}}
    for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
    #pragma omp parallel for simd collapse ((ST > 0) ? 1 + ST : 2) // expected-note 2 {{as specified in 'collapse' clause}}
    for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST]; // expected-error 2 {{expected 2 for loops after '#pragma omp parallel for simd', but found only 1}}
    // expected-error@+6 2 {{directive '#pragma omp parallel for simd' cannot contain more than one 'collapse' clause}}
    // expected-error@+5 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
    // expected-error@+4 2 {{expression is not an integral constant expression}}
  #if __cplusplus >= 201103L
    // expected-note@+2 2 {{non-constexpr function 'foobool' cannot be used in a constant expression}}
  #endif
    #pragma omp parallel for simd collapse (foobool(argc)), collapse (true), collapse (-5)
    for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
    #pragma omp parallel for simd collapse (S) // expected-error {{'S' does not refer to a value}}
    for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
  #if __cplusplus <= 199711L
    // expected-error@+4 2 {{expression is not an integral constant expression}}
  #else
    // expected-error@+2 2 {{integral constant expression must have integral or unscoped enumeration type, not 'char *'}}
  #endif
    #pragma omp parallel for simd collapse (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
    for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
    #pragma omp parallel for simd collapse (1)
    for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
    #pragma omp parallel for simd collapse (N) // expected-error {{argument to 'collapse' clause must be a strictly positive integer value}}
    for (T i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
    #pragma omp parallel for simd collapse (2) // expected-note {{as specified in 'collapse' clause}}
    foo(); // expected-error {{expected 2 for loops after '#pragma omp parallel for simd'}}
    return argc;
  }
  
  int main(int argc, char **argv) {
    #pragma omp parallel for simd collapse // expected-error {{expected '(' after 'collapse'}}
    for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
    #pragma omp parallel for simd collapse ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
    for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
    #pragma omp parallel for simd collapse () // expected-error {{expected expression}}
    for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
    #pragma omp parallel for simd collapse (4 // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-note {{as specified in 'collapse' clause}}
    for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4]; // expected-error {{expected 4 for loops after '#pragma omp parallel for simd', but found only 1}}
    #pragma omp parallel for simd collapse (2+2)) // expected-warning {{extra tokens at the end of '#pragma omp parallel for simd' are ignored}}  expected-note {{as specified in 'collapse' clause}}
    for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4]; // expected-error {{expected 4 for loops after '#pragma omp parallel for simd', but found only 1}}
    // expected-error@+4 {{expression is not an integral constant expression}}
  #if __cplusplus >= 201103L
    // expected-note@+2 {{non-constexpr function 'foobool' cannot be used in a constant expression}}
  #endif
    #pragma omp parallel for simd collapse (foobool(1) > 0 ? 1 : 2)
    for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
    // expected-error@+6 {{expression is not an integral constant expression}}
  #if __cplusplus >= 201103L
    // expected-note@+4 {{non-constexpr function 'foobool' cannot be used in a constant expression}}
  #endif
    // expected-error@+2 2 {{directive '#pragma omp parallel for simd' cannot contain more than one 'collapse' clause}}
    // expected-error@+1 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
    #pragma omp parallel for simd collapse (foobool(argc)), collapse (true), collapse (-5) 
    for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
    #pragma omp parallel for simd collapse (S1) // expected-error {{'S1' does not refer to a value}}
    for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
  #if __cplusplus <= 199711L
    // expected-error@+4 {{expression is not an integral constant expression}}
  #else
    // expected-error@+2 {{integral constant expression must have integral or unscoped enumeration type, not 'char *'}}
  #endif
    #pragma omp parallel for simd collapse (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
    for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
    // expected-error@+3 {{statement after '#pragma omp parallel for simd' must be a for loop}}
    // expected-note@+1 {{in instantiation of function template specialization 'tmain<int, char, -1, -2>' requested here}}
    #pragma omp parallel for simd collapse(collapse(tmain<int, char, -1, -2>(argc, argv) // expected-error 2 {{expected ')'}} expected-note 2 {{to match this '('}}
    foo();
    #pragma omp parallel for simd collapse (2) // expected-note {{as specified in 'collapse' clause}}
    foo(); // expected-error {{expected 2 for loops after '#pragma omp parallel for simd'}}
    // expected-note@+1 {{in instantiation of function template specialization 'tmain<int, char, 1, 0>' requested here}}
    return tmain<int, char, 1, 0>(argc, argv);
  }
  
  