1 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp -fopenmp-version=45 %s -Wuninitialized
2 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp -fopenmp-version=45 -std=c++98 %s -Wuninitialized
3 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp -fopenmp-version=45 -std=c++11 %s -Wuninitialized
4 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp %s -Wuninitialized
5 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp -std=c++98 %s -Wuninitialized
6 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp -std=c++11 %s -Wuninitialized
7 
8 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp-simd -fopenmp-version=45 %s -Wuninitialized
9 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp-simd -fopenmp-version=45 -std=c++98 %s -Wuninitialized
10 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp-simd -fopenmp-version=45 -std=c++11 %s -Wuninitialized
11 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp-simd %s -Wuninitialized
12 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp-simd -std=c++98 %s -Wuninitialized
13 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp-simd -std=c++11 %s -Wuninitialized
14 
15 // expected-note@* 0+{{declared here}}
16 
17 void foo() {
18 }
19 
20 bool foobool(int argc) {
21   return argc;
22 }
23 
24 struct S1;
25 
26 template <class T, typename S, int N, int ST>
27 T tmain(T argc, S **argv) {
28   #pragma omp for collapse // expected-error {{expected '(' after 'collapse'}}
29   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
30   #pragma omp for collapse ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
31   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
32   #pragma omp for collapse () // expected-error {{expected expression}}
33   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
34   // expected-error@+2 {{expected ')'}} expected-note@+2 {{to match this '('}}
35   // expected-error@+1 2 {{integral constant expression}} expected-note@+1 0+{{constant expression}}
36   #pragma omp for collapse (argc
37   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
38   // expected-error@+1 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
39   #pragma omp for collapse (ST // expected-error {{expected ')'}} expected-note {{to match this '('}}
40   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
41   #pragma omp for collapse (1)) // expected-warning {{extra tokens at the end of '#pragma omp for' are ignored}}
42   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
43   #pragma omp for collapse ((ST > 0) ? 1 + ST : 2) // expected-note 2 {{as specified in 'collapse' clause}}
44   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 for', but found only 1}}
45   // expected-error@+3 2 {{directive '#pragma omp for' cannot contain more than one 'collapse' clause}}
46   // expected-error@+2 {{argument to 'collapse' clause must be a strictly positive integer value}}
47   // expected-error@+1 2 {{integral constant expression}} expected-note@+1 0+{{constant expression}}
48   #pragma omp for collapse (foobool(argc)), collapse (true), collapse (-5)
49   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
50   #pragma omp for collapse (S) // expected-error {{'S' does not refer to a value}}
51   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
52 #if __cplusplus <= 199711L
53   // expected-error@+4 2 {{integral constant expression}} expected-note@+4 0+{{constant expression}}
54 #else
55   // expected-error@+2 2 {{integral constant expression must have integral or unscoped enumeration type, not 'char *'}}
56 #endif
57   #pragma omp for collapse (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
58   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
59   #pragma omp for collapse (1)
60   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
61   #pragma omp for collapse (N) // expected-error {{argument to 'collapse' clause must be a strictly positive integer value}}
62   for (T i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
63   #pragma omp for collapse (2) // expected-note {{as specified in 'collapse' clause}}
64   foo(); // expected-error {{expected 2 for loops after '#pragma omp for'}}
65   return argc;
66 }
67 
68 int main(int argc, char **argv) {
69   #pragma omp for collapse // expected-error {{expected '(' after 'collapse'}}
70   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
71   #pragma omp for collapse ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
72   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
73   #pragma omp for collapse () // expected-error {{expected expression}}
74   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
75   #pragma omp for collapse (4 // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-note {{as specified in 'collapse' clause}}
76   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 for', but found only 1}}
77   #pragma omp for collapse (2+2)) // expected-warning {{extra tokens at the end of '#pragma omp for' are ignored}}  expected-note {{as specified in 'collapse' clause}}
78   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 for', but found only 1}}
79   // expected-error@+1 {{integral constant expression}} expected-note@+1 0+{{constant expression}}
80   #pragma omp for collapse (foobool(1) > 0 ? 1 : 2)
81   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
82   // expected-error@+3 {{integral constant expression}} expected-note@+3 0+{{constant expression}}
83   // expected-error@+2 2 {{directive '#pragma omp for' cannot contain more than one 'collapse' clause}}
84   // expected-error@+1 {{argument to 'collapse' clause must be a strictly positive integer value}}
85   #pragma omp for collapse (foobool(argc)), collapse (true), collapse (-5)
86   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
87   #pragma omp for collapse (S1) // expected-error {{'S1' does not refer to a value}}
88   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
89 #if __cplusplus <= 199711L
90   // expected-error@+4 {{integral constant expression}} expected-note@+4 0+{{constant expression}}
91 #else
92   // expected-error@+2 {{integral constant expression must have integral or unscoped enumeration type, not 'char *'}}
93 #endif
94   #pragma omp for collapse (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
95   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
96   // expected-error@+3 {{statement after '#pragma omp for' must be a for loop}}
97   // expected-note@+1 {{in instantiation of function template specialization 'tmain<int, char, -1, -2>' requested here}}
98   #pragma omp for collapse(collapse(tmain<int, char, -1, -2>(argc, argv) // expected-error 2 {{expected ')'}} expected-note 2 {{to match this '('}}
99   foo();
100   #pragma omp for collapse (2) // expected-note {{as specified in 'collapse' clause}}
101   foo(); // expected-error {{expected 2 for loops after '#pragma omp for'}}
102   // expected-note@+1 {{in instantiation of function template specialization 'tmain<int, char, 1, 0>' requested here}}
103   return tmain<int, char, 1, 0>(argc, argv);
104 }
105 
106 void imperfectlyNestedLoops() {
107 #pragma omp for collapse(2)      // expected-note {{as specified in 'collapse' clause}}
108   for (int i = 0; i < 10; ++i) { // expected-error {{expected 2 for loops after '#pragma omp for', but found only 1}}
109     for (int j = 0; j < 10; ++j)
110       ;
111     for (int j = 0; j < 10; ++j)
112       ;
113   }
114 #pragma omp for collapse(2)      // expected-note {{as specified in 'collapse' clause}}
115   for (int i = 0; i < 10; ++i) { // expected-error {{expected 2 for loops after '#pragma omp for', but found only 1}}
116     {
117       for (int j = 0; j < 10; ++j)
118         ;
119       for (int j = 0; j < 10; ++j)
120         ;
121     }
122     {
123       for (int j = 0; j < 10; ++j)
124         ;
125       for (int j = 0; j < 10; ++j)
126         ;
127     }
128   }
129 #pragma omp for collapse(2)      // omp45-note {{as specified in 'collapse' clause}}
130   for (int i = 0; i < 10; ++i) { // omp45-error {{expected 2 for loops after '#pragma omp for', but found only 1}}
131     int a, b, c;
132     for (int j = 0; j < 10; ++j)
133       ;
134     {
135       for (int j = 0; j < 10; ++j)
136         ;
137       for (int j = 0; j < 10; ++j)
138         ;
139     }
140   }
141 }
142