1 // RUN: %clang_cc1 -verify -fopenmp %s
2 
foo()3 void foo() {
4 }
5 
foobool(int argc)6 bool foobool(int argc) {
7   return argc;
8 }
9 
10 struct S1; // expected-note {{declared here}}
11 
12 template <class T, typename S, int N, int ST> // expected-note {{declared here}}
tmain(T argc,S ** argv)13 T tmain(T argc, S **argv) { //expected-note 2 {{declared here}}
14   #pragma omp parallel for collapse // expected-error {{expected '(' after 'collapse'}}
15   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
16   #pragma omp parallel for collapse ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
17   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
18   #pragma omp parallel for collapse () // expected-error {{expected expression}}
19   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
20   // expected-error@+3 {{expected ')'}} expected-note@+3 {{to match this '('}}
21   // expected-error@+2 2 {{expression is not an integral constant expression}}
22   // expected-note@+1 2 {{read of non-const variable 'argc' is not allowed in a constant expression}}
23   #pragma omp parallel for collapse (argc
24   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
25   // expected-error@+1 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
26   #pragma omp parallel for collapse (ST // expected-error {{expected ')'}} expected-note {{to match this '('}}
27   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
28   #pragma omp parallel for collapse (1)) // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
29   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
30   #pragma omp parallel for collapse ((ST > 0) ? 1 + ST : 2) // expected-note 2 {{as specified in 'collapse' clause}}
31   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', but found only 1}}
32   // expected-error@+3 2 {{directive '#pragma omp parallel for' cannot contain more than one 'collapse' clause}}
33   // expected-error@+2 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
34   // expected-error@+1 2 {{expression is not an integral constant expression}}
35   #pragma omp parallel for collapse (foobool(argc)), collapse (true), collapse (-5)
36   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
37   #pragma omp parallel for collapse (S) // expected-error {{'S' does not refer to a value}}
38   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
39   // expected-error@+1 2 {{expression is not an integral constant expression}}
40   #pragma omp parallel for collapse (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
41   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
42   #pragma omp parallel for collapse (1)
43   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
44   #pragma omp parallel for collapse (N) // expected-error {{argument to 'collapse' clause must be a strictly positive integer value}}
45   for (T i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
46   #pragma omp parallel for collapse (2) // expected-note {{as specified in 'collapse' clause}}
47   foo(); // expected-error {{expected 2 for loops after '#pragma omp parallel for'}}
48   return argc;
49 }
50 
main(int argc,char ** argv)51 int main(int argc, char **argv) {
52   #pragma omp parallel for collapse // expected-error {{expected '(' after 'collapse'}}
53   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
54   #pragma omp parallel for collapse ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
55   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
56   #pragma omp parallel for collapse () // expected-error {{expected expression}}
57   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
58   #pragma omp parallel for collapse (4 // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-note {{as specified in 'collapse' clause}}
59   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', but found only 1}}
60   #pragma omp parallel for collapse (2+2)) // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}  expected-note {{as specified in 'collapse' clause}}
61   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', but found only 1}}
62   #pragma omp parallel for collapse (foobool(1) > 0 ? 1 : 2) // expected-error {{expression is not an integral constant expression}}
63   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
64   // expected-error@+3 {{expression is not an integral constant expression}}
65   // expected-error@+2 2 {{directive '#pragma omp parallel for' cannot contain more than one 'collapse' clause}}
66   // expected-error@+1 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
67   #pragma omp parallel for collapse (foobool(argc)), collapse (true), collapse (-5)
68   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
69   #pragma omp parallel for collapse (S1) // expected-error {{'S1' does not refer to a value}}
70   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
71   // expected-error@+1 {{expression is not an integral constant expression}}
72   #pragma omp parallel for collapse (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
73   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
74   // expected-error@+3 {{statement after '#pragma omp parallel for' must be a for loop}}
75   // expected-note@+1 {{in instantiation of function template specialization 'tmain<int, char, -1, -2>' requested here}}
76   #pragma omp parallel for collapse(collapse(tmain<int, char, -1, -2>(argc, argv) // expected-error 2 {{expected ')'}} expected-note 2 {{to match this '('}}
77   foo();
78   #pragma omp parallel for collapse (2) // expected-note {{as specified in 'collapse' clause}}
79   foo(); // expected-error {{expected 2 for loops after '#pragma omp parallel for'}}
80   // expected-note@+1 {{in instantiation of function template specialization 'tmain<int, char, 1, 0>' requested here}}
81   return tmain<int, char, 1, 0>(argc, argv);
82 }
83 
84