1 // RUN: %clang_cc1 -verify -fopenmp -ferror-limit 100 -std=c++11 -o - %s -Wuninitialized
2 
3 // RUN: %clang_cc1 -verify -fopenmp-simd -ferror-limit 100 -std=c++11 -o - %s -Wuninitialized
4 
5 void xxx(int argc) {
6   int x; // expected-note {{initialize the variable 'x' to silence this warning}}
7 #pragma omp parallel for
8   for(int i = 0; i < 10; ++i)
9   argc = x; // expected-warning {{variable 'x' is uninitialized when used here}}
10 }
11 
12 void foo() {
13 }
14 
15 #pragma omp parallel for // expected-error {{unexpected OpenMP directive '#pragma omp parallel for'}}
16 
17 int main(int argc, char **argv) {
18 #pragma omp parallel for { // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
19   for (int i = 0; i < argc; ++i)
20     foo();
21 #pragma omp parallel for ( // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
22   for (int i = 0; i < argc; ++i)
23     foo();
24 #pragma omp parallel for[ // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
25   for (int i = 0; i < argc; ++i)
26     foo();
27 #pragma omp parallel for] // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
28   for (int i = 0; i < argc; ++i)
29     foo();
30 #pragma omp parallel for) // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
31   for (int i = 0; i < argc; ++i)
32     foo();
33 #pragma omp parallel for } // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
34   for (int i = 0; i < argc; ++i)
35     foo();
36 #pragma omp parallel for
37   for (int i = 0; i < argc; ++i)
38     foo();
39 // expected-warning@+1 {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
40 #pragma omp parallel for unknown()
41   for (int i = 0; i < argc; ++i)
42     foo();
43 L1:
44   for (int i = 0; i < argc; ++i)
45     foo();
46 #pragma omp parallel for
47   for (int i = 0; i < argc; ++i)
48     foo();
49 #pragma omp parallel for
50   for (int i = 0; i < argc; ++i) {
51     goto L1; // expected-error {{use of undeclared label 'L1'}}
52     argc++;
53   }
54 
55   for (int i = 0; i < 10; ++i) {
56     switch (argc) {
57     case (0):
58 #pragma omp parallel for
59       for (int i = 0; i < argc; ++i) {
60         foo();
61         break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}
62         continue;
63       }
64     default:
65       break;
66     }
67   }
68 #pragma omp parallel for default(none) // expected-note {{explicit data sharing attribute requested here}}
69   for (int i = 0; i < 10; ++i)
70     ++argc; // expected-error {{variable 'argc' must have explicitly specified data sharing attributes}}
71 
72   goto L2; // expected-error {{use of undeclared label 'L2'}}
73 #pragma omp parallel for
74   for (int i = 0; i < argc; ++i)
75   L2:
76   foo();
77 #pragma omp parallel for
78   for (int i = 0; i < argc; ++i) {
79     return 1; // expected-error {{cannot return from OpenMP region}}
80   }
81 
82   [[]] // expected-error {{an attribute list cannot appear here}}
83 #pragma omp parallel for
84       for (int n = 0; n < 100; ++n) {
85   }
86 
87   return 0;
88 }
89 
90 void test_ordered() {
91 #pragma omp parallel for ordered ordered // expected-error {{directive '#pragma omp parallel for' cannot contain more than one 'ordered' clause}}
92   for (int i = 0; i < 16; ++i)
93     ;
94 }
95 
96